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Izawa S, Nakamura-Taira N, Moriishi C, Yoshikawa T, Akamatsu R, Ikeda H, Kubo T. Protocol for a web-based study on the work environment and daily lifestyle of Japanese employees. Ind Health 2024; 62:102-109. [PMID: 37722887 DOI: 10.2486/indhealth.2023-0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Mental health problems are prevalent among the working population and must be resolved. We conducted a web-based large-scale study of workers, including a baseline survey and two follow-up surveys, to investigate the associations between self-care behaviors in daily life (e.g., stress coping, sleep, diet, and exercise), work environment improvements, and mental health among Japanese employees from various industries. In this protocol, we demonstrate the study design and demographic data of the participants in the baseline survey. Invitations to participate in this study were sent to 421,825 internet monitor registrants in February 2022. Overall, 20,000 registrants who met the inclusion criteria participated in the survey. There were large variations in occupations and working styles (e.g., physical work, night work, and teleworking) among the participants, and we also found significant differences between male and female participants in the demographic data. An overview of the survey data suggests that the demographic characteristics of the participants in this study are comparable to those reported in previous studies on Japanese employees. We plan to use these survey data in the future to examine the associations of daily lifestyles and work environments with the mental health of Japanese employees.
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Affiliation(s)
- Shuhei Izawa
- National Institute of Occupational Safety and Health, Japan
| | | | | | - Toru Yoshikawa
- National Institute of Occupational Safety and Health, Japan
| | - Rie Akamatsu
- Natural Science Division, Faculty of Core Research, Ochanomizu University, Japan
| | - Hiroki Ikeda
- National Institute of Occupational Safety and Health, Japan
| | - Tomohide Kubo
- National Institute of Occupational Safety and Health, Japan
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Eto T, Nishimura Y, Ikeda H, Kubo T, Adan A, Kitamura S. The Japanese version of the reduced morningness-eveningness questionnaire. Chronobiol Int 2024:1-6. [PMID: 38557262 DOI: 10.1080/07420528.2024.2334048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/18/2024] [Indexed: 04/04/2024]
Abstract
Circadian typology, or "morningness" and "eveningness," is generally assessed using the Morningness-Eveningness Questionnaire (MEQ), a 19-item scale that could be burdensome in large-scale surveys. To overcome this, a 5-item version known as the reduced morningness-eveningness questionnaire (rMEQ), which is sensitive to the assessment of circadian typology, was developed; however, a validated Japanese version of the rMEQ is yet to be established. This study aimed to develop and validate the Japanese version of the rMEQ. Five essential items for the rMEQ were selected from existing Japanese MEQ data (N = 2,213), and the rMEQ was compiled. We conducted a confirmatory factor analysis for the psychometric properties of the rMEQ and confirmed its robust one-factor structure for evaluating morningness-eveningness (GFI = 0.984, AGFI = 0.951, CFI = 0.935, and RMSEA = 0.091). Reliability was evaluated via internal consistency of rMEQ items using Cronbach's α and McDonald's ω, and the values were 0.618 and 0.654, respectively. The rMEQ scores strongly correlated with MEQ (ρ = 0.883, p < 0.001), and classification agreement (Morning, Neither, and Evening types) between rMEQ and MEQ was 77.6% (Cramer's V = 0.643, Weighted Cohen's κ = 0.72), confirming the validity. The Japanese rMEQ may be a valuable tool for the efficient assessment of circadian typologies.
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Affiliation(s)
- Taisuke Eto
- Japan Society for the Promotion of Science, Kodaira, Japan
- Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Yuki Nishimura
- Occupational Stress and Health Management Research Group, National Institute of Occupational Safety and Health, Kawasaki, Japan
| | - Hiroki Ikeda
- Ergonomics Research Group, National Institute of Occupational Safety and Health, Kawasaki, Japan
| | - Tomohide Kubo
- Occupational Stress and Health Management Research Group, National Institute of Occupational Safety and Health, Kawasaki, Japan
| | - Ana Adan
- Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain
- Institute of Neurosciences, University of Barcelona, Barcelona, Spain
| | - Shingo Kitamura
- Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
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Tamano H, Takiguchi M, Murakami D, Kawano Y, Fukuda T, Ikeda H, Akagi Y, Ikeura S, Takeda A. Blockage of metallothionein synthesis via adrenaline β receptor activation invalidates dehydroeffusol-mediated prevention of amyloid β 1-42 toxicity. Neurosci Lett 2024; 825:137708. [PMID: 38438068 DOI: 10.1016/j.neulet.2024.137708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/29/2024] [Accepted: 02/27/2024] [Indexed: 03/06/2024]
Abstract
Dehydroeffusol, a major phenanthrene in Juncus effusus, protects neurodegeneration induced by intracellular Zn2+ ferried by extracellular amyloid β1-42 (Aβ1-42). Here we focused on adrenaline β receptor activation and the induction of metallothioneins (MTs), intracellular Zn2+-binding proteins to test the protective mechanism of dehydroeffusol. Isoproterenol, an agonist of adrenergic β receptors elevated the level of MTs in the dentate granule cell layer 1 day after intracerebroventricular (ICV) injection. When Aβ1-42 was injected 1 day after isoproterenol injection, pre-injection of isoproterenol protected Aβ1-42 toxicity via reducing the increase in intracellular Zn2+ after ICV injection of Aβ1-42. On the basis of the effect of increased MTs by isoproterenol, dehydroeffusol (15 mg/kg body weight) was orally administered to mice once a day for 2 days. On day later, dehydroeffusol elevated the level of MTs and prevented Aβ1-42 toxicity via reducing Aβ1-42-mediated increase in intracellular Zn2+. In contrast, propranolol, an antagonist of adrenergic β receptors reduced the level of MTs increased by dehydroeffusol, resulting in invalidating the preventive effect of dehydroeffusol on Aβ1-42 toxicity. The present study indicates that blockage of MT synthesis via adrenaline β receptor activation invalidates dehydroeffusol-mediated prevention of Aβ1-42 toxicity. It is likely that MT synthesis via adrenaline β receptor activation is beneficial to neuroprotection and that oral intake of dehydroeffusol preventively serves against the Aβ1-42 toxicity.
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Affiliation(s)
- Haruna Tamano
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan; Shizuoka Tohto Medical College, 1949 Minamiema, Izunokuni, Shizuoka 410-2221, Japan
| | - Mako Takiguchi
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Daichi Murakami
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yuya Kawano
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | | | - Hiroki Ikeda
- Satoen CO., LTD., 1057 Ohhara, Aoi-ku Shizuoka 421-1392, Japan
| | - Yasuhito Akagi
- Hagihara & CO., LTD., 884 Nishibara, Nishiachicho, Kurashiki 710-8501, Japan
| | - Shinji Ikeura
- Hagihara & CO., LTD., 884 Nishibara, Nishiachicho, Kurashiki 710-8501, Japan
| | - Atsushi Takeda
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
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Ikeda H, Kubo T. The association between work interval regularity and sleep regularity: a 2-week observational study in daytime employees. J Occup Health 2024; 66:uiae009. [PMID: 38365438 PMCID: PMC11019564 DOI: 10.1093/joccuh/uiae009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/05/2024] [Indexed: 02/18/2024] Open
Abstract
OBJECTIVES Several health issues are associated with irregular sleep patterns. However, it is unclear what causes workers to sleep irregularly. The work interval (WI) between the end of one day's working hours and the start of the next day's working hours contains sleep opportunities, and an irregular WI may result in irregular sleep. This study investigated this association among Japanese daytime workers. METHODS This study recruited 141 daytime workers without shiftwork for a 14-day observational study. Participants reported the WI duration, WI timing, time in bed (TIB: difference between bedtime and wake-up time), and bedtime timing every day before bedtime. The SD over 14 days was used to calculate the regularity scores. Logistic regression analysis was performed. The dependent variables were ≥60 minutes of TIB SD and bedtime timing SD, whereas the independent variables were WI duration and timing SD. RESULTS The odds ratios (ORs) (95% CIs) for ≥60 minutes of TIB SD across categories of WI duration SD were 1.000 (reference) for <30 minutes, 1.344 (0.337-5.360) for 30-60 minutes, and 4.743 (1.441-15.607) for ≥60 minutes. The ORs (95% CIs) for ≥60 min of bedtime timing SD across categories of WI timing SD were 1.000 for <30 minutes, 4.154 (1.574-10.965) for 30-60 minutes, and 7.714 (2.124-28.015) for ≥60 minutes. CONCLUSIONS Regularity of WI was associated with regularity of sleep. To ensure worker health, workers should have regular WI, and if they are exposed to irregular WI, they should make every effort to maintain regular sleep.
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Affiliation(s)
- Hiroki Ikeda
- Japan Organization of Occupational Health and Safety, National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, 214-8585, Kawasaki, Japan
| | - Tomohide Kubo
- Japan Organization of Occupational Health and Safety, National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, 214-8585, Kawasaki, Japan
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Kakimoto Y, Ohno S, Saito T, Isozaki S, Ikeda H, Matsushima Y, Ueda A, Tsuboi A, Osawa M. Assessment of maxillary sinus fluid volume for postmortem diagnosis of drowning. Radiography (Lond) 2024; 30:308-312. [PMID: 38091921 DOI: 10.1016/j.radi.2023.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/28/2023] [Accepted: 12/01/2023] [Indexed: 01/15/2024]
Abstract
INTRODUCTION Drowning is a comprehensive and exclusive diagnosis at autopsy. Autopsy findings such as pleural effusion and waterlogged lungs contribute to the diagnosis. Herein, we aim to reveal the practical usefulness and postmortem changes of the maxillary sinus fluid volume to diagnose drowning. METHODS We evaluated 52 drowning and 59 nondrowning cases. The maxillary sinus fluid volume was measured using a computed tomography (CT) scan, and pleural effusion volume and lung weight were manually measured at autopsy. The utility of these three indices for diagnosing drowning and its postmortem changes was evaluated. RESULTS The maxillary sinus fluid volume was significantly higher in drowning cases than in other external causes and cardiovascular death cases. Receiver operating characteristic curve analysis revealed that a total maxillary sinus fluid volume >1.04 mL more usefully indicated drowning (odds ratio, 8.19) than a total pleural effusion volume >175 mL (odds ratio, 7.23) and a total lung weight >829 g (odds ratio, 2.29). The combination of maxillary sinus fluid volume and pleural effusion volume more effectively predicted drowning than one index alone. Moreover, the maxillary sinus fluid volume was less influenced by the postmortem interval than the other two indices up to a week after death. CONCLUSION Maxillary sinus fluid volume can be more useful than pleural effusion volume and lung weight with higher sensitivity and odds ratio for diagnosing drowning. IMPLICATIONS FOR PRACTICE Fluid accumulation in both the maxillary sinuses strongly predicts drowning in the postmortem imaging.
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Affiliation(s)
- Y Kakimoto
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan.
| | - S Ohno
- Japan Coast Guard, Tokyo, Japan
| | - T Saito
- Japan Coast Guard, Tokyo, Japan
| | - S Isozaki
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - H Ikeda
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - Y Matsushima
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - A Ueda
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - A Tsuboi
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - M Osawa
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
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Harada K, Izawa S, Nakamura-Taira N, Yoshikawa T, Akamatsu R, Ikeda H, Kubo T. Cross-sectional associations of weekly time, social context, and motivation of exercise with mental health among workers. Int Arch Occup Environ Health 2024; 97:23-33. [PMID: 37947814 DOI: 10.1007/s00420-023-02021-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023]
Abstract
PURPOSE Exercise is considered a strategy to promote mental health among workers. However, the optimal exercise conditions that promote mental health benefits for workers are still unclear. This study examined the cross-sectional associations of weekly exercise time duration, social context of exercise, and exercise motivation levels with the mental health among Japanese workers. METHODS A web-based cross-sectional questionnaire survey was conducted among 18,902 workers, aged 20-59 years. The mental health variables (psychological distress, psychological stress reaction, physical stress reaction, job satisfaction, and work engagement), exercise participation (non-exercisers, exercisers), and demographic factors of all responders were measured. Weekly exercise time, social context of exercise (alone only, with others only, both alone and with others), and exercise motivation (non-regulation, external/introjected regulation, identified regulation, integrated regulation, and internal regulation) were also measured amongst exercisers. After adjusting for demographic factors, multiple regression analyses were conducted. RESULTS Exercisers had significantly lower psychological distress, lower psychological and physical stress reactions, higher job satisfaction, and higher work engagement than non-exercisers. Among exercisers, while weekly exercise time duration and social context of exercise were not clearly and robustly associated with mental health variables, respondents with intrinsic regulation had significantly lower psychological distress, lower psychological and physical stress reaction, higher job satisfaction, and higher work engagement than those with lower self-determined motivations. CONCLUSIONS This study found that more self-determined exercise motivation is closely associated with advantageous mental health variables, than the duration or the social context of exercise among Japanese workers.
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Affiliation(s)
- Kazuhiro Harada
- Graduate School of Human Development and Environment, Kobe University, 3-11 Tsurukabuto, Nada, Kobe, Hyogo, 657-8501, Japan.
- Advanced Research Center for Well-Being, Kobe University, Kobe, Hyogo, Japan.
| | - Shuhei Izawa
- National Institute of Occupational Safety and Health, Kawasaki, Kanagawa, Japan
| | - Nanako Nakamura-Taira
- Department of Psychology, Faculty of Letters, Chuo University, Hachioji, Tokyo, Japan
| | - Toru Yoshikawa
- National Institute of Occupational Safety and Health, Kawasaki, Kanagawa, Japan
| | - Rie Akamatsu
- Natural Science Division, Faculty of Core Research, Ochanomizu University, Bunkyo, Tokyo, Japan
| | - Hiroki Ikeda
- National Institute of Occupational Safety and Health, Kawasaki, Kanagawa, Japan
| | - Tomohide Kubo
- National Institute of Occupational Safety and Health, Kawasaki, Kanagawa, Japan
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Vinodhini J, Shalini V, Harish S, Ikeda H, Archana J, Navaneethan M. Solvent-assisted synthesis of Ag 2Se and Ag 2S nanoparticles on carbon fabric for enhanced thermoelectric performance. J Colloid Interface Sci 2023; 651:436-447. [PMID: 37556902 DOI: 10.1016/j.jcis.2023.07.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 07/03/2023] [Accepted: 07/14/2023] [Indexed: 08/11/2023]
Abstract
The challenge of developing low-cost, highly flexible, and high-performance thermoelectric (TE) materials persists due to the low thermoelectric efficiency of conducting polymers and the inflexibility of inorganic materials. In this study, we successfully integrated Ag2Se and Ag2S with highly conductive carbon fabric (CF) to produce a flexible thermoelectric material. A facile one-step solvothermal method was employed to synthesize the Ag2Se-CF and Ag2S-CF, which were then subjected to X-ray analysis to confine the phase formation of Ag2Se and Ag2S on the carbon fabric. The analysis revealed that Ag2Se and Ag2S nanoparticles were tightly packed on the surface of carbon fabric, and compositional analysis confirmed the interaction between the material and carbon fabric. The thermoelectric properties of Ag2Se-CF and Ag2S-CF were significantly altered due to carrier concentration and mobility variations, resulting in a low power factor of 6.7 μW/mK2 for Ag2Se-CF and a high-power factor of 24 μW/mK2 at 373 K for Ag2S-CF. The growth of Ag2Se-CF and Ag2S-CF on carbon fabric led to an enhancement in their thermoelectric properties. Further, TE legs were fabricated using the Ag2Se-CF (p-type) and Ag2S-CF (n-type), and the fabricated legs exhibited an output voltage of ∼20 mV to ∼86.65 mV at a temperature gradient (ΔT) of 3-8 K. This work represents a cutting-edge approach to the fabrication of high-performance, wearable thermoelectric devices.
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Affiliation(s)
- J Vinodhini
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - V Shalini
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - S Harish
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India; Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan
| | - H Ikeda
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan; Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan
| | - J Archana
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - M Navaneethan
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India; Nanotechnology Research Center, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India.
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Ikeda H, Miyao S, Nagaoka S, Takashima T, Law SM, Yamamoto T, Kurimoto K. High-quality single-cell transcriptomics from ovarian histological sections during folliculogenesis. Life Sci Alliance 2023; 6:e202301929. [PMID: 37722727 PMCID: PMC10507249 DOI: 10.26508/lsa.202301929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 08/23/2023] [Accepted: 08/23/2023] [Indexed: 09/20/2023] Open
Abstract
High-quality, straightforward single-cell RNA sequencing (RNA-seq) with spatial resolution remains challenging. Here, we developed DRaqL (direct RNA recovery and quenching for laser capture microdissection), an experimental approach for efficient cell lysis of tissue sections, directly applicable to cDNA amplification. Single-cell RNA-seq combined with DRaqL allowed transcriptomic profiling from alcohol-fixed sections with efficiency comparable with that of profiling from freshly dissociated cells, together with effective exon-exon junction profiling. The combination of DRaqL with protease treatment enabled robust and efficient single-cell transcriptome analysis from formalin-fixed tissue sections. Applying this method to mouse ovarian sections, we were able to predict the transcriptome of oocytes by their size and identified an anomaly in the size-transcriptome relationship relevant to growth retardation of oocytes, in addition to detecting oocyte-specific splice isoforms. Furthermore, we identified differentially expressed genes in granulosa cells in association with their proximity to the oocytes, suggesting distinct epigenetic regulations and cell-cycle activities governing the germ-soma relationship. Thus, DRaqL is a versatile, efficient approach for high-quality single-cell RNA-seq from tissue sections, thereby revealing histological heterogeneity in folliculogenic transcriptome.
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Affiliation(s)
- Hiroki Ikeda
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - Shintaro Miyao
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - So Nagaoka
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - Tomoya Takashima
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - Sze-Ming Law
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - Takuya Yamamoto
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan
- Medical-risk Avoidance based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP), Kyoto, Japan
| | - Kazuki Kurimoto
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
- https://ror.org/045ysha14 Advanced Medical Research Center, Nara Medical University, Kashihara, Japan
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Ikeda H, Kubo T, Nishimura Y, Izawa S. Effects of work-related electronic communication during non-working hours after work from home and office on fatigue, psychomotor vigilance performance and actigraphic sleep: observational study on information technology workers. Occup Environ Med 2023; 80:627-634. [PMID: 37813483 PMCID: PMC10646915 DOI: 10.1136/oemed-2023-108962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 09/19/2023] [Indexed: 10/17/2023]
Abstract
OBJECTIVES This study examined the effects of work-related electronic communication (WREC) during non-working hours in the work from home or office setting on health. METHODS The study recruited 98 information technology workers in a 9-day observational study. They recorded work-life events (eg, work style (working mostly from home or the office) and duration of WREC during non-working hours) and subjective ratings (eg, current fatigue, sleepiness and depression) and wore a sleep actigraph to measure objective sleep variables before bedtime every day. They completed the Brief Psychomotor Vigilance Test (PVT-B) before bedtime for 4 days. RESULTS The frequency of WREC was significantly higher when working mostly from home than in the office (p<0.01). In addition, the duration of WREC was longer when working mostly from home than in the office (p<0.001). Linear or generalised linear mixed model analysis for fatigue, depression and PVT lapse revealed significant interaction effects between work style and WREC (all p<0.05). Post hoc analysis showed that the longer the WREC, the worse the fatigue and depression and the lower the lapse on working mostly from the office (all p<0.05). CONCLUSIONS Longer WREC is associated with worse fatigue and depression and lower lapse of PVT (higher alertness) before bedtime for working mostly from the office. Workers, especially those working from the office, should minimise WREC during non-working hours to maintain good health. Therefore, companies, managers and other relevant stakeholders should refrain from contacting workers during non-working hours.
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Affiliation(s)
- Hiroki Ikeda
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Tomohide Kubo
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Yuki Nishimura
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Shuhei Izawa
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
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Usuda H, Watanabe S, T H, Saito M, Sato S, Ikeda H, Kumagai Y, Choolani MC, Kemp MW. Artificial placenta technology: History, potential and perception. Placenta 2023; 141:10-17. [PMID: 37743742 DOI: 10.1016/j.placenta.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 09/20/2022] [Accepted: 10/02/2022] [Indexed: 11/06/2022]
Abstract
As presently conceptualised, the artificial placenta (AP) is an experimental life support platform for extremely preterm infants (i.e. 400-600 g; 21-23+6 weeks of gestation) born at the border of viability. It is based around the oxygenation of the periviable fetus using gas-exchangers connected to the fetal vasculature. In this system, the lung remains fluid-filled and the fetus remains in a quiescent state. The AP has been in development for some sixty years. Over this time, animal experimental models have evolved iteratively from employing external pump-driven systems used to support comparatively mature fetuses (generally goats or sheep) to platforms driven by the fetal heart and used successfully to maintain extremely premature fetuses weighing around 600 g. Simultaneously, sizable advances in neonatal and obstetric care mean that the nature of a potential candidate patient for this therapy, and thus the threshold success level for justifying its adoption, have both changed markedly since this approach was first conceived. Five landmark breakthroughs have occurred over the developmental history of the AP: i) the first human studies reported in the 1950's; ii) foundation animal studies reported in the 1960's; iii) the first extended use of AP technology combined with fetal pulmonary resuscitation reported in the 1990s; iv) the development of AP systems powered by the fetal heart reported in the 2000's; and v) the adaption of this technology to maintain extremely preterm fetuses (i.e. 500-600 g body weight) reported in the 2010's. Using this framework, the present paper will provide a review of the developmental history of this long-running experimental system and up-to-date assessment of the published field today. With the apparent acceleration of AP technology towards clinical application, there has been an increase in the attention paid to the field, along with some inaccurate commentary regarding its potential application and merits. Additionally, this paper will address several misrepresentations regarding the potential application of AP technology that serve to distract from the significant potential of this approach to greatly improve outcomes for extremely preterm infants born at or close to the present border of viability.
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Affiliation(s)
- H Usuda
- Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Western Australia, Australia; Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan
| | - S Watanabe
- Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan
| | - Hanita T
- Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan
| | - M Saito
- Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Western Australia, Australia; Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan
| | - S Sato
- Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan
| | - H Ikeda
- Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Western Australia, Australia; Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan
| | - Y Kumagai
- Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan
| | - M C Choolani
- Women and Infants Research Foundation, King Edward Memorial Hospital, Perth, Western Australia, Australia
| | - M W Kemp
- Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Western Australia, Australia; Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan; School of Veterinary and Life Sciences, Murdoch University, Perth, Western Australia, Australia; Women and Infants Research Foundation, King Edward Memorial Hospital, Perth, Western Australia, Australia; Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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11
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Bouchi R, Sugiyama T, Goto A, Ohsugi M, Yoshioka N, Katagiri H, Mita T, Hirota Y, Ikegami H, Matsuhisa M, Araki E, Yokoyama H, Minami M, Yamazaki K, Jinnouchi H, Ikeda H, Fujii H, Nogawa M, Kaneshige M, Miyo K, Ueki K. Impact of COVID-19 pandemic on behavioral changes and glycemic control and a survey of telemedicine in patients with diabetes: A multicenter retrospective observational study. J Diabetes Investig 2023; 14:994-1004. [PMID: 37183588 PMCID: PMC10360386 DOI: 10.1111/jdi.14027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 04/05/2023] [Accepted: 04/25/2023] [Indexed: 05/16/2023] Open
Abstract
AIMS/INTRODUCTION To investigate whether the COVID-19 pandemic affected behavioral changes and glycemic control in patients with diabetes and to conduct a survey of telemedicine during the pandemic. MATERIALS AND METHODS In this retrospective study, a total of 2,348 patients were included from 15 medical facilities. Patients were surveyed about their lifestyle changes and attitudes toward telemedicine. Hemoglobin A1c (HbA1c) levels were compared among before (from June 1 to August 31, 2019) and in the first (from June 1 to August 31, 2020) and in the second (from June 1 to August 31, 2021) year of the pandemic. A survey of physician attitudes toward telemedicine was also conducted. RESULTS The HbA1c levels were comparable between 2019 (7.27 ± 0.97%), 2020 (7.28 ± 0.92%), and 2021 (7.25 ± 0.94%) without statistical difference between each of those 3 years. Prescriptions for diabetes medications increased during the period. The frequency of eating out was drastically reduced (51.7% in 2019; 30.1% in 2020), and physical activity decreased during the pandemic (48.1% in 2019; 41.4% in 2020; 43.3% in 2021). Both patients and physicians cited increased convenience and reduced risk of infection as their expectations for telemedicine, while the lack of physician-patient interaction and the impossibility of consultation and examination were cited as sources of concern. CONCLUSIONS Our data suggest that glycemic control did not deteriorate during the COVID-19 pandemic with appropriate intensification of diabetes treatment in patients with diabetes who continued to attend specialized diabetes care facilities, and that patients and physicians shared the same expectations and concerns about telemedicine.
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Affiliation(s)
- Ryotaro Bouchi
- Department of Diabetes, Endocrinology and Metabolism, Center HospitalNational Center for Global Health and MedicineTokyoJapan
- Diabetes and Metabolism Information Center, Research InstituteNational Center for Global Health and MedicineTokyoJapan
| | - Takehiro Sugiyama
- Diabetes and Metabolism Information Center, Research InstituteNational Center for Global Health and MedicineTokyoJapan
- Department of Public Health/Health Policy, Graduate School of MedicineThe University of TokyoTokyoJapan
| | - Atsushi Goto
- Department of Health Data Science, Graduate School of Data ScienceYokohama City UniversityYokohamaJapan
| | - Mitsuru Ohsugi
- Department of Diabetes, Endocrinology and Metabolism, Center HospitalNational Center for Global Health and MedicineTokyoJapan
- Diabetes and Metabolism Information Center, Research InstituteNational Center for Global Health and MedicineTokyoJapan
| | | | - Hideki Katagiri
- Department of Metabolism and DiabetesTohoku University Graduate School of MedicineSendaiJapan
| | - Tomoya Mita
- Department of Metabolism & Endocrinology, Graduate School of MedicineJuntendo UniversityTokyoJapan
| | - Yushi Hirota
- Division of Diabetes and Endocrinology, Department of Internal MedicineKobe University Graduate School of MedicineKobeJapan
| | - Hiroshi Ikegami
- Department of Endocrinology, Metabolism and DiabetesKindai University Faculty of MedicineOsakaJapan
| | - Munehide Matsuhisa
- Diabetes Therapeutics and Research Center, Institute of Advanced Medical SciencesTokushima UniversityTokushimaJapan
| | - Eiichi Araki
- Department of Metabolic Medicine, Faculty of Life SciencesKumamoto UniversityKumamotoJapan
| | | | - Masae Minami
- Minami Diabetes Clinical Research CenterFukuokaJapan
| | | | | | | | | | | | | | - Kengo Miyo
- Center for Medical Informatics IntelligenceNational Center for Global Health and MedicineTokyoJapan
| | - Kohjiro Ueki
- Department of Diabetes, Endocrinology and Metabolism, Center HospitalNational Center for Global Health and MedicineTokyoJapan
- Diabetes Research CenterNational Center for Global Health and MedicineTokyoJapan
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12
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Yoshiike T, Benedetti F, Moriguchi Y, Vai B, Aggio V, Asano K, Ito M, Ikeda H, Ohmura H, Honma M, Yamada N, Kim Y, Nakajima S, Kuriyama K. Exploring the role of empathy in prolonged grief reactions to bereavement. Sci Rep 2023; 13:7596. [PMID: 37165097 PMCID: PMC10172345 DOI: 10.1038/s41598-023-34755-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 05/06/2023] [Indexed: 05/12/2023] Open
Abstract
Grief reactions to the bereavement of a close individual could involve empathy for pain, which is fundamental to social interaction. To explore whether grief symptoms interact with social relatedness to a person to whom one directs empathy to modulate the expression of empathy, we administered an empathy task to 28 bereaved adults during functional magnetic resonance imaging, in which participants were subliminally primed with facial stimuli (e.g., faces of their deceased or living relative, or a stranger), each immediately followed by a visual pain stimulus. Individuals' grief severity promoted empathy for the pain stimulus primed with the deceased's face, while it diminished the neural response to the pain stimulus primed with the face of either their living relative or a stranger in the medial frontal cortex (e.g., the right dorsal anterior cingulate cortex). Moreover, preliminary analyses showed that while the behavioral empathic response was promoted by the component of "longing" in the deceased priming condition, the neural empathic response was diminished by the component of "avoidance" in the stranger priming condition. Our results suggest an association between grief reactions to bereavement and empathy, in which grief symptoms interact with interpersonal factors to promote or diminish empathic responses to others' pain.
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Affiliation(s)
- Takuya Yoshiike
- Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, 187-8553, Japan.
| | - Francesco Benedetti
- Psychiatry and Clinical Psychobiology, Division of Neuroscience, Scientific Institute Ospedale San Raffaele, Milan, Italy
- University Vita-Salute San Raffaele, Milan, Italy
| | - Yoshiya Moriguchi
- Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Benedetta Vai
- Psychiatry and Clinical Psychobiology, Division of Neuroscience, Scientific Institute Ospedale San Raffaele, Milan, Italy
- University Vita-Salute San Raffaele, Milan, Italy
| | - Veronica Aggio
- Psychiatry and Clinical Psychobiology, Division of Neuroscience, Scientific Institute Ospedale San Raffaele, Milan, Italy
- University Vita-Salute San Raffaele, Milan, Italy
| | - Keiko Asano
- Department of Human Sciences, Faculty of Human Sciences, Musashino University, Tokyo, Japan
| | - Masaya Ito
- National Center for Cognitive Behavior Therapy and Research, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Hiroki Ikeda
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Hidefumi Ohmura
- Department of Information Sciences, Faculty of Science and Technology, Tokyo University of Science, Noda, Japan
| | - Motoyasu Honma
- Department of Physiology, Showa University School of Medicine, Tokyo, Japan
| | - Naoto Yamada
- Department of Psychiatry, Shiga University of Medical Science, Otsu, Japan
| | - Yoshiharu Kim
- Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Satomi Nakajima
- Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
- Department of Human Sciences, Faculty of Human Sciences, Musashino University, Tokyo, Japan
| | - Kenichi Kuriyama
- Department of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, 187-8553, Japan
- Department of Psychiatry, Shiga University of Medical Science, Otsu, Japan
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13
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Fukushima T, Morimoto M, Kobayashi S, Ueno M, Uojima H, Hidaka H, Kusano C, Chuma M, Numata K, Tsuruya K, Arase Y, Kagawa T, Hattori N, Ikeda H, Watanabe T, Tanaka K, Maeda S. Association Between Immune-Related Adverse Events and Survival in Patients with Hepatocellular Carcinoma Treated With Atezolizumab Plus Bevacizumab. Oncologist 2023:7110250. [PMID: 37023703 DOI: 10.1093/oncolo/oyad090] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 03/09/2023] [Indexed: 04/08/2023] Open
Abstract
BACKGROUND Immune checkpoint inhibitors (ICIs) are effective for advanced hepatocellular carcinoma (HCC). However, there are few reports on the correlation between the clinical efficacy of ICIs and the development of immune-related adverse events (irAEs) in patients with HCC. The aim of this study was to investigate the association between irAE development and survival in patients with HCC treated with atezolizumab plus bevacizumab. PATIENTS AND METHODS We enrolled 150 patients with advanced HCC treated with atezolizumab plus bevacizumab between October 2020 and October 2021 at 5 territorial institutions. We compared the efficacy of atezolizumab plus bevacizumab between patients who experienced irAEs (irAE group) and those who did not (non-irAE group). RESULTS Thirty-two patients (21.3%) developed irAEs of any grade. Grade 3/4 irAEs were observed in 9 patients (6.0%). The median progression-free survivals (PFS) in the irAE and non-irAE groups were 273 and 189 days, respectively (P = .055). The median overall survivals (OS) in the irAE and non-irAE groups were not reached and 458 days, respectively (P = .036). Grade 1/2 irAEs significantly prolonged PFS (P = .014) and OS (P = .003). Grade 1/2 irAEs were significantly associated with PFS (hazard ratio [HR], 0.339; 95% confidence interval [CI], 0.166-0.691; P = .003) and OS (HR, 0.086; 95% CI, 0.012-0.641; P = .017) on multivariate analysis. CONCLUSION The development of irAEs was associated with increased survival in a real-world population of patients with advanced HCC treated with atezolizumab plus bevacizumab. Grade 1/2 irAEs were strongly correlated with PFS and OS.
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Affiliation(s)
- Taito Fukushima
- Division of Hepatobiliary and Pancreatic Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - Manabu Morimoto
- Division of Hepatobiliary and Pancreatic Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - Satoshi Kobayashi
- Division of Hepatobiliary and Pancreatic Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - Makoto Ueno
- Division of Hepatobiliary and Pancreatic Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - Haruki Uojima
- Department of Gastroenterology, Internal Medicine, Kitasato University School of Medicine, Sagamihara, Japan
| | - Hisashi Hidaka
- Department of Gastroenterology, Internal Medicine, Kitasato University School of Medicine, Sagamihara, Japan
| | - Chika Kusano
- Department of Gastroenterology, Internal Medicine, Kitasato University School of Medicine, Sagamihara, Japan
| | - Makoto Chuma
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Kazushi Numata
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Kota Tsuruya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Yoshitaka Arase
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Tatehiro Kagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Nobuhiro Hattori
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Hiroki Ikeda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Tsunamasa Watanabe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Katsuaki Tanaka
- Gastroenterology Division, Hadano Red Cross Hospital, Hadano, Japan
| | - Shin Maeda
- Department of Gastroenterology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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14
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Nishimura Y, Ikeda H, Matsumoto S, Izawa S, Kawakami S, Tamaki M, Masuda S, Kubo T. Impaired self-monitoring ability on reaction times of psychomotor vigilance task of nurses after a night shift. Chronobiol Int 2023:1-9. [DOI: 10.1080/07420528.2023.2193270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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15
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Shalini V, Harish S, Ikeda H, Hayakawa Y, Archana J, Navaneethan M. Enhancement of thermoelectric power factor via electron energy filtering in Cu doped MoS 2 on carbon fabric for wearable thermoelectric generator applications. J Colloid Interface Sci 2023; 633:120-131. [PMID: 36436346 DOI: 10.1016/j.jcis.2022.10.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/21/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
Abstract
The design and construction of state-of-the-art wearable thermoelectric materials are important for the development of self-powered wearable thermoelectric generators (WTEGs). Molybdenum disulfide (MoS2) has been reported as a noteworthy thermoelectric (TE) material because of its large intrinsic bandgap and high carrier mobility. In this work, Cu-doped two-dimensional layered MoS2 nanosheets were grown on carbon fabric (CF) via a hydrothermal method. The electrical conductivity, Seebeck coefficient, and power factor for the Cu-doped MoS2 were found to increase with increasing temperature. The maximum Seebeck coefficient was obtained for a MoS2 sample doped with 4 at% of Cu (CM4) was ∼10 μV/K at 303 K and ∼13 μV/K at 373 K. The enhancement in the Seebeck coefficient was attributed to an energy-filtering effect caused by the interfacial barrier between MoS2 and Cu. In addition, a thermoelectric device was designed with four pairs of TE materials, where CM4 (4 at%) was used as a p-type material and Cu wire was used as an n-type material. These p- and n-type materials were connected electrically in series and thermally in parallel to generate a voltage of 190.7 μV at a temperature gradient of 8 K.
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Affiliation(s)
- V Shalini
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka 432-8011, Japan; Functional Materials and Energy Devices Laboratory, Department of Physics Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - S Harish
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka 432-8011, Japan; Functional Materials and Energy Devices Laboratory, Department of Physics Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - H Ikeda
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka 432-8011, Japan; Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka 432-8011, Japan.
| | - Y Hayakawa
- Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka 432-8011, Japan
| | - J Archana
- Functional Materials and Energy Devices Laboratory, Department of Physics Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - M Navaneethan
- Functional Materials and Energy Devices Laboratory, Department of Physics Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India; Nanotechnology Research Center, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India.
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16
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Nakamura T, Matsumoto M, Amano K, Enokido Y, Zolensky ME, Mikouchi T, Genda H, Tanaka S, Zolotov MY, Kurosawa K, Wakita S, Hyodo R, Nagano H, Nakashima D, Takahashi Y, Fujioka Y, Kikuiri M, Kagawa E, Matsuoka M, Brearley AJ, Tsuchiyama A, Uesugi M, Matsuno J, Kimura Y, Sato M, Milliken RE, Tatsumi E, Sugita S, Hiroi T, Kitazato K, Brownlee D, Joswiak DJ, Takahashi M, Ninomiya K, Takahashi T, Osawa T, Terada K, Brenker FE, Tkalcec BJ, Vincze L, Brunetto R, Aléon-Toppani A, Chan QHS, Roskosz M, Viennet JC, Beck P, Alp EE, Michikami T, Nagaashi Y, Tsuji T, Ino Y, Martinez J, Han J, Dolocan A, Bodnar RJ, Tanaka M, Yoshida H, Sugiyama K, King AJ, Fukushi K, Suga H, Yamashita S, Kawai T, Inoue K, Nakato A, Noguchi T, Vilas F, Hendrix AR, Jaramillo-Correa C, Domingue DL, Dominguez G, Gainsforth Z, Engrand C, Duprat J, Russell SS, Bonato E, Ma C, Kawamoto T, Wada T, Watanabe S, Endo R, Enju S, Riu L, Rubino S, Tack P, Takeshita S, Takeichi Y, Takeuchi A, Takigawa A, Takir D, Tanigaki T, Taniguchi A, Tsukamoto K, Yagi T, Yamada S, Yamamoto K, Yamashita Y, Yasutake M, Uesugi K, Umegaki I, Chiu I, Ishizaki T, Okumura S, Palomba E, Pilorget C, Potin SM, Alasli A, Anada S, Araki Y, Sakatani N, Schultz C, Sekizawa O, Sitzman SD, Sugiura K, Sun M, Dartois E, De Pauw E, Dionnet Z, Djouadi Z, Falkenberg G, Fujita R, Fukuma T, Gearba IR, Hagiya K, Hu MY, Kato T, Kawamura T, Kimura M, Kubo MK, Langenhorst F, Lantz C, Lavina B, Lindner M, Zhao J, Vekemans B, Baklouti D, Bazi B, Borondics F, Nagasawa S, Nishiyama G, Nitta K, Mathurin J, Matsumoto T, Mitsukawa I, Miura H, Miyake A, Miyake Y, Yurimoto H, Okazaki R, Yabuta H, Naraoka H, Sakamoto K, Tachibana S, Connolly HC, Lauretta DS, Yoshitake M, Yoshikawa M, Yoshikawa K, Yoshihara K, Yokota Y, Yogata K, Yano H, Yamamoto Y, Yamamoto D, Yamada M, Yamada T, Yada T, Wada K, Usui T, Tsukizaki R, Terui F, Takeuchi H, Takei Y, Iwamae A, Soejima H, Shirai K, Shimaki Y, Senshu H, Sawada H, Saiki T, Ozaki M, Ono G, Okada T, Ogawa N, Ogawa K, Noguchi R, Noda H, Nishimura M, Namiki N, Nakazawa S, Morota T, Miyazaki A, Miura A, Mimasu Y, Matsumoto K, Kumagai K, Kouyama T, Kikuchi S, Kawahara K, Kameda S, Iwata T, Ishihara Y, Ishiguro M, Ikeda H, Hosoda S, Honda R, Honda C, Hitomi Y, Hirata N, Hirata N, Hayashi T, Hayakawa M, Hatakeda K, Furuya S, Fukai R, Fujii A, Cho Y, Arakawa M, Abe M, Watanabe S, Tsuda Y. Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples. Science 2023; 379:eabn8671. [PMID: 36137011 DOI: 10.1126/science.abn8671] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Samples of the carbonaceous asteroid Ryugu were brought to Earth by the Hayabusa2 spacecraft. We analyzed 17 Ryugu samples measuring 1 to 8 millimeters. Carbon dioxide-bearing water inclusions are present within a pyrrhotite crystal, indicating that Ryugu's parent asteroid formed in the outer Solar System. The samples contain low abundances of materials that formed at high temperatures, such as chondrules and calcium- and aluminum-rich inclusions. The samples are rich in phyllosilicates and carbonates, which formed through aqueous alteration reactions at low temperature, high pH, and water/rock ratios of <1 (by mass). Less altered fragments contain olivine, pyroxene, amorphous silicates, calcite, and phosphide. Numerical simulations, based on the mineralogical and physical properties of the samples, indicate that Ryugu's parent body formed ~2 million years after the beginning of Solar System formation.
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Affiliation(s)
- T Nakamura
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - M Matsumoto
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - K Amano
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Y Enokido
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - M E Zolensky
- NASA Johnson Space Center; Houston, TX 77058, USA
| | - T Mikouchi
- The University Museum, The University of Tokyo, Tokyo 113-0033, Japan
| | - H Genda
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - M Y Zolotov
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
| | - K Kurosawa
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - S Wakita
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - R Hyodo
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Nagano
- Department of Mechanical Systems Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - D Nakashima
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Y Takahashi
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Isotope Science Center, The University of Tokyo, Tokyo 113-0032, Japan
| | - Y Fujioka
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - M Kikuiri
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - E Kagawa
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - M Matsuoka
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA), Observatoire de Paris, Meudon 92195 France.,Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8567, Japan
| | - A J Brearley
- Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, USA
| | - A Tsuchiyama
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu 525-8577, Japan.,Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China.,Center for Excellence in Deep Earth Science, CAS, Guangzhou 510640, China
| | - M Uesugi
- Scattering and Imaging Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - J Matsuno
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Y Kimura
- Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan
| | - M Sato
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - R E Milliken
- Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI 02912, USA
| | - E Tatsumi
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Instituto de Astrofísica de Canarias, University of La Laguna, Tenerife 38205, Spain
| | - S Sugita
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.,Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Hiroi
- Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI 02912, USA
| | - K Kitazato
- Aizu Research Center for Space Informatics, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - D Brownlee
- Department of Astronomy, University of Washington, Seattle, WA 98195 USA
| | - D J Joswiak
- Department of Astronomy, University of Washington, Seattle, WA 98195 USA
| | - M Takahashi
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - K Ninomiya
- Institute for Radiation Sciences, Osaka University, Toyonaka 560-0043, Japan
| | - T Takahashi
- Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Kashiwa 277-8583, Japan.,Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Osawa
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
| | - K Terada
- Department of Earth and Space Science, Osaka University, Toyonaka 560-0043, Japan
| | - F E Brenker
- Institute of Geoscience, Goethe University, Frankfurt, 60438 Frankfurt am Main, Germany
| | - B J Tkalcec
- Institute of Geoscience, Goethe University, Frankfurt, 60438 Frankfurt am Main, Germany
| | - L Vincze
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - R Brunetto
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - A Aléon-Toppani
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - Q H S Chan
- Department of Earth Sciences, Royal Holloway, University of London, Egham TW20 0EX, UK
| | - M Roskosz
- Institut de Minéralogie, Physique des Matériaux et Cosmochimie, Muséum National d'Histoire Naturelle, Centre national de la recherche scientifique (CNRS), Sorbonne Université, Paris, France
| | - J-C Viennet
- Institut de Minéralogie, Physique des Matériaux et Cosmochimie, Muséum National d'Histoire Naturelle, Centre national de la recherche scientifique (CNRS), Sorbonne Université, Paris, France
| | - P Beck
- Institut de Planétologie et d'Astrophysique de Grenoble, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
| | - E E Alp
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - T Michikami
- Faculty of Engineering, Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - Y Nagaashi
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan.,Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - T Tsuji
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan.,School of Engineering, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Ino
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Physics, Kwansei Gakuin University, Sanda 669-1330, Japan
| | - J Martinez
- NASA Johnson Space Center; Houston, TX 77058, USA
| | - J Han
- Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX 77204, USA
| | - A Dolocan
- Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - R J Bodnar
- Department of Geoscience, Virginia Tech, Blacksburg, VA 24061, USA
| | - M Tanaka
- Materials Analysis Station, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - H Yoshida
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Sugiyama
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - A J King
- Department of Earth Science, Natural History Museum, London SW7 5BD, UK
| | - K Fukushi
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
| | - H Suga
- Spectroscopy Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - S Yamashita
- Department of Materials Structure Science, The Graduate University for Advanced Studies (SOKENDAI), Tsukuba, Ibaraki 305-0801, Japan.,Institute of Materials Structure Science, High-Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
| | - T Kawai
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Inoue
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
| | - A Nakato
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Noguchi
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan.,Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
| | - F Vilas
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - A R Hendrix
- Planetary Science Institute, Tucson, AZ 85719, USA
| | | | - D L Domingue
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - G Dominguez
- Department of Physics, California State University, San Marcos, CA 92096, USA
| | - Z Gainsforth
- Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA
| | - C Engrand
- Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - J Duprat
- Institut de Minéralogie, Physique des Matériaux et Cosmochimie, Muséum National d'Histoire Naturelle, Centre national de la recherche scientifique (CNRS), Sorbonne Université, Paris, France
| | - S S Russell
- Department of Earth Science, Natural History Museum, London SW7 5BD, UK
| | - E Bonato
- Institute for Planetary Research, Deutsches Zentrum für Luftund Raumfahrt, Rutherfordstraße 2 12489 Berlin, Germany
| | - C Ma
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena CA 91125, USA
| | - T Kawamoto
- Department of Geosciences, Shizuoka University, Shizuoka 422-8529, Japan
| | - T Wada
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - S Watanabe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Kashiwa 277-8583, Japan
| | - R Endo
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - S Enju
- Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan
| | - L Riu
- European Space Astronomy Centre, 28692 Villanueva de la Cañada, Spain
| | - S Rubino
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - P Tack
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - S Takeshita
- High Energy Accelerator Research Organization, Tokai 319-1106, Japan
| | - Y Takeichi
- Department of Materials Structure Science, The Graduate University for Advanced Studies (SOKENDAI), Tsukuba, Ibaraki 305-0801, Japan.,Institute of Materials Structure Science, High-Energy Accelerator Research Organization, Tsukuba 305-0801, Japan.,Department of Applied Physics, Osaka University, Suita 565-0871, Japan
| | - A Takeuchi
- Scattering and Imaging Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - A Takigawa
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - D Takir
- NASA Johnson Space Center; Houston, TX 77058, USA
| | | | - A Taniguchi
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori 590-0494, Japan
| | - K Tsukamoto
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - T Yagi
- National Metrology Institute of Japan, AIST, Tsukuba 305-8565, Japan
| | - S Yamada
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - K Yamamoto
- Japan Fine Ceramics Center, Nagoya 456-8587, Japan
| | - Y Yamashita
- National Metrology Institute of Japan, AIST, Tsukuba 305-8565, Japan
| | - M Yasutake
- Scattering and Imaging Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - K Uesugi
- Scattering and Imaging Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - I Umegaki
- High Energy Accelerator Research Organization, Tokai 319-1106, Japan.,Toyota Central Research and Development Laboratories, Nagakute 480-1192, Japan
| | - I Chiu
- Institute for Radiation Sciences, Osaka University, Toyonaka 560-0043, Japan
| | - T Ishizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Okumura
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - E Palomba
- Istituto di Astrofisica e Planetologia Spaziali, Istituto Nazionale di Astrofisica, Rome 00133, Italy
| | - C Pilorget
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France.,Institut Universitaire de France, Paris, France
| | - S M Potin
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA), Observatoire de Paris, Meudon 92195 France.,Faculty of Aerospace Engineering, Delft University of Technology, Delft, Netherlands
| | - A Alasli
- Department of Mechanical Systems Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - S Anada
- Japan Fine Ceramics Center, Nagoya 456-8587, Japan
| | - Y Araki
- Department of Physical Sciences, Ritsumeikan University, Shiga 525-0058, Japan
| | - N Sakatani
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - C Schultz
- Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI 02912, USA
| | - O Sekizawa
- Spectroscopy Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - S D Sitzman
- Physical Sciences Laboratory, The Aerospace Corporation, CA 90245, USA
| | - K Sugiura
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - M Sun
- Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China.,Center for Excellence in Deep Earth Science, CAS, Guangzhou 510640, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - E Dartois
- Institut des Sciences Moléculaires d'Orsay, Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - E De Pauw
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - Z Dionnet
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - Z Djouadi
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - G Falkenberg
- Deutsches Elektronen-Synchrotron Photon Science, 22603 Hamburg, Germany
| | - R Fujita
- Department of Mechanical Systems Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - T Fukuma
- Nano Life Science Institute, Kanazawa University, Kanazawa 920-1192, Japan
| | - I R Gearba
- Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - K Hagiya
- Graduate School of Life Science, University of Hyogo, Hyogo 678-1297, Japan
| | - M Y Hu
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - T Kato
- Japan Fine Ceramics Center, Nagoya 456-8587, Japan
| | - T Kawamura
- Institut de Physique du Globe de Paris, Université de Paris, Paris 75205, France
| | - M Kimura
- Department of Materials Structure Science, The Graduate University for Advanced Studies (SOKENDAI), Tsukuba, Ibaraki 305-0801, Japan.,Institute of Materials Structure Science, High-Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
| | - M K Kubo
- Division of Natural Sciences, International Christian University, Mitaka 181-8585, Japan
| | - F Langenhorst
- Institute of Geosciences, Friedrich-Schiller-Universität Jena, 07745 Jena, Germany
| | - C Lantz
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - B Lavina
- Center for Advanced Radiation Sources, University of Chicago, Chicago, IL 60637, USA
| | - M Lindner
- Institute of Geoscience, Goethe University, Frankfurt, 60438 Frankfurt am Main, Germany
| | - J Zhao
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - B Vekemans
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - D Baklouti
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - B Bazi
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - F Borondics
- Optimized Light Source of Intermediate Energy to LURE (SOLEIL) L'Orme des Merisiers, Gif sur Yvette F-91192, France
| | - S Nagasawa
- Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Kashiwa 277-8583, Japan.,Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
| | - G Nishiyama
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Nitta
- Spectroscopy Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - J Mathurin
- Institut Chimie Physique, Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - T Matsumoto
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - I Mitsukawa
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - H Miura
- Graduate School of Science, Nagoya City University, Nagoya 467-8501, Japan
| | - A Miyake
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - Y Miyake
- High Energy Accelerator Research Organization, Tokai 319-1106, Japan
| | - H Yurimoto
- Department of Natural History Sciences, Hokkaido University, Sapporo 060-0810, Japan
| | - R Okazaki
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - H Yabuta
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - H Naraoka
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - K Sakamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Tachibana
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - H C Connolly
- Department of Geology, Rowan University, Glassboro, NJ 08028, USA
| | - D S Lauretta
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA
| | - M Yoshitake
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - K Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - K Yoshihara
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yogata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Yano
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - D Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Yamada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Yada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Wada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Usui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - R Tsukizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - F Terui
- Department of Mechanical Engineering, Kanagawa Institute of Technology, Atsugi 243-0292, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - Y Takei
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Iwamae
- Marine Works Japan, Yokosuka 237-0063, Japan
| | - H Soejima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Marine Works Japan, Yokosuka 237-0063, Japan
| | - K Shirai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - H Sawada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Saiki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - G Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - T Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - N Ogawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Ogawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R Noguchi
- Faculty of Science, Niigata University, Niigata 950-2181, Japan
| | - H Noda
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - M Nishimura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Namiki
- Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan.,National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Nakazawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Morota
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - A Miyazaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Miura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Matsumoto
- Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan.,National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Kumagai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Marine Works Japan, Yokosuka 237-0063, Japan
| | - T Kouyama
- Digital Architecture Research Center, National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan
| | - S Kikuchi
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.,National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Kawahara
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Kameda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - T Iwata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - Y Ishihara
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - M Ishiguro
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - H Ikeda
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R Honda
- Department of Information Science, Kochi University, Kochi 780-8520, Japan.,Center for Data Science, Ehime University, Matsuyama 790-8577, Japan
| | - C Honda
- Aizu Research Center for Space Informatics, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Hitomi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Marine Works Japan, Yokosuka 237-0063, Japan
| | - N Hirata
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - N Hirata
- Aizu Research Center for Space Informatics, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Hayashi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Hatakeda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Marine Works Japan, Yokosuka 237-0063, Japan
| | - S Furuya
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - R Fukai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Fujii
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Cho
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - M Arakawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - M Abe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - S Watanabe
- Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
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17
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Abe S, Asami S, Eizuka M, Futagi S, Gando A, Gando Y, Gima T, Goto A, Hachiya T, Hata K, Hayashida S, Hosokawa K, Ichimura K, Ieki S, Ikeda H, Inoue K, Ishidoshiro K, Kamei Y, Kawada N, Kishimoto Y, Koga M, Kurasawa M, Maemura N, Mitsui T, Miyake H, Nakahata T, Nakamura K, Nakamura K, Nakamura R, Ozaki H, Sakai T, Sambonsugi H, Shimizu I, Shirai J, Shiraishi K, Suzuki A, Suzuki Y, Takeuchi A, Tamae K, Ueshima K, Watanabe H, Yoshida Y, Obara S, Ichikawa AK, Chernyak D, Kozlov A, Nakamura KZ, Yoshida S, Takemoto Y, Umehara S, Fushimi K, Kotera K, Urano Y, Berger BE, Fujikawa BK, Learned JG, Maricic J, Axani SN, Smolsky J, Fu Z, Winslow LA, Efremenko Y, Karwowski HJ, Markoff DM, Tornow W, Dell'Oro S, O'Donnell T, Detwiler JA, Enomoto S, Decowski MP, Grant C, Li A, Song H. Search for the Majorana Nature of Neutrinos in the Inverted Mass Ordering Region with KamLAND-Zen. Phys Rev Lett 2023; 130:051801. [PMID: 36800472 DOI: 10.1103/physrevlett.130.051801] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/10/2022] [Accepted: 11/29/2022] [Indexed: 06/18/2023]
Abstract
The KamLAND-Zen experiment has provided stringent constraints on the neutrinoless double-beta (0νββ) decay half-life in ^{136}Xe using a xenon-loaded liquid scintillator. We report an improved search using an upgraded detector with almost double the amount of xenon and an ultralow radioactivity container, corresponding to an exposure of 970 kg yr of ^{136}Xe. These new data provide valuable insight into backgrounds, especially from cosmic muon spallation of xenon, and have required the use of novel background rejection techniques. We obtain a lower limit for the 0νββ decay half-life of T_{1/2}^{0ν}>2.3×10^{26} yr at 90% C.L., corresponding to upper limits on the effective Majorana neutrino mass of 36-156 meV using commonly adopted nuclear matrix element calculations.
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Affiliation(s)
- S Abe
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Asami
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - M Eizuka
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Futagi
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - A Gando
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Gando
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - T Gima
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - A Goto
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - T Hachiya
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Hata
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Hayashida
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Hosokawa
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Ichimura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Ieki
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Ikeda
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Inoue
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - K Ishidoshiro
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Kamei
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - N Kawada
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Kishimoto
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M Koga
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M Kurasawa
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - N Maemura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - T Mitsui
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Miyake
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - T Nakahata
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Nakamura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Nakamura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - R Nakamura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Ozaki
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
- Graduate Program on Physics for the Universe, Tohoku University, Sendai 980-8578, Japan
| | - T Sakai
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Sambonsugi
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - I Shimizu
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - J Shirai
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Shiraishi
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - A Suzuki
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Suzuki
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - A Takeuchi
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Tamae
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Ueshima
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Watanabe
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Yoshida
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Obara
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
| | - A K Ichikawa
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - D Chernyak
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - A Kozlov
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - K Z Nakamura
- Kyoto University, Department of Physics, Kyoto 606-8502, Japan
| | - S Yoshida
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y Takemoto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S Umehara
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - K Fushimi
- Department of Physics, Tokushima University, Tokushima 770-8506, Japan
| | - K Kotera
- Graduate School of Integrated Arts and Sciences, Tokushima University, Tokushima 770-8502, Japan
| | - Y Urano
- Graduate School of Integrated Arts and Sciences, Tokushima University, Tokushima 770-8502, Japan
| | - B E Berger
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - B K Fujikawa
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J G Learned
- Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
| | - J Maricic
- Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
| | - S N Axani
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Smolsky
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Z Fu
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - L A Winslow
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Y Efremenko
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - H J Karwowski
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA; Physics Departments at Duke University, Durham, North Carolina 27708, USA; North Carolina Central University, Durham, North Carolina 27707, USA; and The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - D M Markoff
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA; Physics Departments at Duke University, Durham, North Carolina 27708, USA; North Carolina Central University, Durham, North Carolina 27707, USA; and The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - W Tornow
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA; Physics Departments at Duke University, Durham, North Carolina 27708, USA; North Carolina Central University, Durham, North Carolina 27707, USA; and The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - S Dell'Oro
- Center for Neutrino Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - T O'Donnell
- Center for Neutrino Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - J A Detwiler
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Center for Experimental Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - S Enomoto
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Center for Experimental Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - M P Decowski
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Nikhef and the University of Amsterdam, Science Park, Amsterdam, Netherlands
| | - C Grant
- Boston University, Boston, Massachusetts 02215, USA
| | - A Li
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA; Physics Departments at Duke University, Durham, North Carolina 27708, USA; North Carolina Central University, Durham, North Carolina 27707, USA; and The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Boston University, Boston, Massachusetts 02215, USA
| | - H Song
- Boston University, Boston, Massachusetts 02215, USA
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18
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Oka A, Yuta A, Okawa Y, Masuno S, Tsunoda T, Takahara E, Terada A, Kanai K, Nagakura H, Mimura H, Arao H, Ueyama S, Ueyama A, Tokuda R, Bamba H, Nakazato H, Nakazato M, Amesara R, Nakai S, Araki S, Sakaida M, Tokuriki M, Hama T, Chiba M, Ikeda H, Togawa A, Tsuzuki H, Hyo Y, Niitsu S, Ohkawa C, Nakamoto S, Takeo T, Kumanomidou H, Kanai K, Kitamura H, Sugiura R, Okano M. [A MULTICENTER CLINICAL SURVEY ABOUT THE PREVALENCE OF JAPANESE CYPRESS POLLINOSIS AND THE EFFICACY OF SUBLINGUAL IMMUNOTHERAPY WITH JAPANESE CEDAR POLLEN EXTRACT DURING JAPANESE CYPRESS POLLEN DISPERSAL PERIOD]. Arerugi 2023; 72:1138-1146. [PMID: 37967960 DOI: 10.15036/arerugi.72.1138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
BACKGROUND Little is known whether sublingual immunotherapy using Japanese cedar pollen extract (cedar SLIT) is effective for not only Japanese cedar pollinosis but also Japanese cypress pollinosis. We investigated the prevalence rate of Japanese cypress pollinosis, efficacy of cedar SLIT on cypress pollinosis and patients' wish to receive cypress SLIT. METHODS We investigated a multi-center (31 institutions), cross-sectional survey using a self-administrated questionnaire with four questions for patients received cedar SLIT aged from 5 to 69 years old. RESULTS 2523 subjects were enrolled for analysis. 83.4% of them had pollinosis symptoms during cypress season before cedar SLIT. In such patients, 37.4% experienced lessened efficacy of cedar SLIT during cypress season. Both the prevalence of cypress pollinosis and the lessened efficacy of cedar SLIT on cypress pollinosis were significantly seen in western Japan as compared to eastern Japan. 76.1% of the subject having cypress pollinosis before SLIT wished to receive cypress SLIT if it is available. CONCLUSION A lessened efficacy of cedar SLIT during cypress season was broadly seen in Japan, and further showed a regional difference. Together with the finding of high wish by patients, these results suggest a development of cypress SLIT is desirable.
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Affiliation(s)
- Aiko Oka
- Department of Otorhinolaryngology, Head and Neck Surgery, International University of Health and Welfare Narita Hospital
| | | | | | | | | | | | | | | | | | | | - Harumi Arao
- Arao Internal Medicine and Otolaryngology Clinic
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Kengo Kanai
- Department of Otorhinolaryngology, Head and Neck Surgery, International University of Health and Welfare Narita Hospital
| | - Hiroshi Kitamura
- Department of Otorhinolaryngology, Head and Neck Surgery, International University of Health and Welfare Narita Hospital
| | - Ruka Sugiura
- International University of Health and Welfare, School of Medicine
| | - Mitsuhiro Okano
- Department of Otorhinolaryngology, Head and Neck Surgery, International University of Health and Welfare Narita Hospital
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19
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Sato T, Ikeda H, Murakami K, Murakami K, Shirane S, Ohta N. Periostin is an aggravating factor and predictive biomarker of eosinophilic chronic rhinosinusitis. Allergol Int 2023; 72:161-168. [PMID: 36109310 DOI: 10.1016/j.alit.2022.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/01/2022] [Accepted: 08/12/2022] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Patients with eosinophilic chronic rhinosinusitis (ECRS) respond poorly to many treatment modalities. Overproduction of periostin in the nasal mucosa is reported to contribute to polyp formation. This study examined periostin levels in patients with ECRS in comparison with levels in patients with non-ECRS. METHODS Fifty-nine patients with chronic rhinosinusitis were grouped into those with ECRS and those with non-ECRS. We compared the relationships between peripheral blood eosinophil level, serum periostin level, histopathological findings, clinical and laboratory findings, nose findings, diagnostic score of the Japanese Epidemiological Survey of Refractory Eosinophilic Chronic Rhinosinusitis Study, and postoperative recurrence of nasal polyps in each group. RESULTS In the ECRS group, a positive correlation was found between peripheral blood eosinophil level and serum periostin level (rs = 0.49, P < 0.01: Spearman's rank correlation coefficient). ROC curve analysis was used to evaluate the serum periostin level that could predict postoperative recurrence of nasal polyps in the ECRS group: the area under the curve (AUC) was 0.95, sensitivity was 92%, and specificity was 100%; the serum periostin cutoff value for postoperative recurrence of nasal polyps was 130 ng/ml. In ROC curve analysis to evaluate peripheral blood eosinophil level, the AUC was 0.73, sensitivity was 69.2%, and specificity was 85.0%; the cutoff value was 8.8%. CONCLUSIONS periostin was implicated in the pathophysiology of ECRS. Periostin shown to be a more useful biomarker than eosinophils in ECRS. Periostin was shown to likely be an important biomarker for pathological severity of ECRS and postoperative recurrence of nasal polyps.
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Affiliation(s)
- Teruyuki Sato
- Division of Otolaryngology, Tohoku Medical and Pharmaceutical University, Sendai, Japan.
| | - Hiroki Ikeda
- Department of Otolaryngology, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Keigo Murakami
- Division of Pathology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Kazuhiro Murakami
- Division of Pathology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Shion Shirane
- Division of Otolaryngology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Nobuo Ohta
- Division of Otolaryngology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
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20
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Ikeda H, Liu X, Oyama F, Akama T, Izawa S, Takahashi M. Effects of short sleep duration on hemodynamic and psychological responses under long working hours in healthy middle-aged men: an experimental study. Ind Health 2022; 60:535-547. [PMID: 35067488 PMCID: PMC9726610 DOI: 10.2486/indhealth.2021-0184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
This study examined the effects of short sleep duration (SSD) on hemodynamic and psychological responses under long working hours (LWH) in a laboratory experiment. Sixteen subjects participated in a crossover design experiment consisting of two conditions: normal (7-hours) sleep and short (5-hours) sleep. In each condition, participants engaged in simulated LWH (13 hours a day), comprising 12 task sessions. Hemodynamic and psychological responses were measured in each session. Results showed that there were significant main effects of condition and session but no interaction for hemodynamic and psychological responses. Systolic blood pressure and fatigue were higher in the later sessions than the first one. Stroke volume, sleepiness, fatigue, and stress were higher in the 5-hour than the 7-hour sleep condition (all p<0.05). These results suggest that although the combined effect of LWH and SSD was not significant, both LWH and SSD caused a hemodynamic and psychological burden.
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Affiliation(s)
- Hiroki Ikeda
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Japan
| | - Xinxin Liu
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Japan
| | - Fuyuki Oyama
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Japan
| | - Takahide Akama
- Department of Integrated Design Engineering, Maebashi Institute of Technology, Japan
| | - Shuhei Izawa
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Japan
| | - Masaya Takahashi
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Japan
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21
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Kubo T, Matsumoto S, Izawa S, Ikeda H, Nishimura Y, Kawakami S, Tamaki M, Masuda S. Shift-Work Schedule Intervention for Extending Restart Breaks after Consecutive Night Shifts: A Non-randomized Controlled Cross-Over Study. Int J Environ Res Public Health 2022; 19:15042. [PMID: 36429761 PMCID: PMC9691089 DOI: 10.3390/ijerph192215042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/12/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
More knowledge is required to determine the optimal shiftwork schedule to reduce the harmful effects of short restart breaks between shifts. This 5-month intervention study aimed to examine the effectiveness of extended restart breaks from 31 h to 55 h after consecutive night shifts by considering the characteristics of the circadian rhythm to mitigate fatigue and sleep among 30 shift-working nurses. Subjective and objective variables, such as vital exhaustion, distress, hair cortisol, salivary C-reactive protein, and sleep mattress sensor sensation, were repeatedly measured to examine the differences between the intervention and control conditions. Two-way (condition × time) multilevel analyses showed significantly lower levels of vital exhaustion and distress in the intervention condition (p = 0.005 and p = 0.004, respectively). However, the expected benefit of the intervention was not observed in objectively measured variables. These findings suggested that an extended restart break after consecutive night shifts can moderately decrease occupational fatigue and stress.
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Affiliation(s)
- Tomohide Kubo
- National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan
| | - Shun Matsumoto
- National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan
| | - Shuhei Izawa
- National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan
| | - Hiroki Ikeda
- National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan
| | - Yuki Nishimura
- National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan
| | - Sayaka Kawakami
- Research Center for Child Mental Development, Hamamatsu University School of Medicine, Handayama 1-20-1, Higashi-ku, Shizuoka 431-3192, Japan
| | - Masako Tamaki
- Cognitive Somnology RIKEN Hakubi Research Team, RIKEN Cluster for Pioneering Research, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Cognitive Somnology RIKEN Hakubi Research Team, RIKEN Center for Brain Science, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Sanae Masuda
- Nursing Department, Kanto Rosai Hospital, Kizukisumiyoshi 1-1, Nakahara-ku, Kawasaki 211-8510, Japan
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22
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Hattori N, Ikeda H, Watanabe T, Satta Y, Ehira T, Suzuki T, Kiyokawa H, Nakahara K, Takahashi H, Matsunaga K, Matsumoto N, Yasuda H, Suzuki M, Itoh F, Tateishi K. Risk factors for liver-related mortality of patients with hepatitis C virus after sustained virologic response to direct-acting antiviral agents. JGH Open 2022; 6:685-691. [PMID: 36262540 PMCID: PMC9575322 DOI: 10.1002/jgh3.12805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 07/01/2022] [Accepted: 07/27/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND AND AIM The aim of this study was to identify the factors associated with liver-related and non-liver-related mortality of patients with hepatitis C virus (HCV) after sustained virologic response (SVR) to direct-acting antiviral agents (DAAs). METHODS We conducted a retrospective, single-center cohort study of HCV patients cured by DAAs. RESULTS A total of 330 patients with SVR to DAAs were eligible. The median follow-up period was 3.38 years (inter-quartile range: 2.03-4.58). The cumulative liver-related or non-liver-related mortality rates at 1, 3, and 5 years were 0.00 or 1.29%, 2.87 or 3.60%, and 5.10 or 9.46, respectively. Among the liver-related deaths, 9 of the 10 were from liver cancer. Among the non-liver-related deaths, the most common cause was malignancy. Through multivariate analysis using the Cox proportional hazard model, diabetes mellitus (DM, hazard ratio 13.1, 95% confidence interval 2.81-61.3) and a history of hepatocellular carcinoma (HCC, 12.8, 2.76-59.2), independently predicted liver-related death. No variables were associated with non-liver-related death. CONCLUSION Our findings suggest that DM and a history of HCC are risk factors for liver-related mortality of HCV patients cured by DAAs. These results indicate that early management of HCV and HCC surveillance of diabetic patients after SVR are important to increase the chance of survival. Further studies are needed to confirm the association of DM and HCC history with survival.
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Affiliation(s)
- Nobuhiro Hattori
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Hiroki Ikeda
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Tsunamasa Watanabe
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Yosuke Satta
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Takuya Ehira
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Tatsuya Suzuki
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Hirofumi Kiyokawa
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Kazunari Nakahara
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Hideaki Takahashi
- Division of Gastroenterology and HepatologySt. Marianna University Yokohama Seibu HospitalYokohamaJapan
| | - Kotaro Matsunaga
- Division of Gastroenterology and HepatologyKawasaki Municipal Tama HospitalKawasakiJapan
| | - Nobuyuki Matsumoto
- Division of Gastroenterology and HepatologySt. Marianna University Yokohama Seibu HospitalYokohamaJapan
| | - Hiroshi Yasuda
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Michihiro Suzuki
- Division of Gastroenterology and HepatologyKawasaki Municipal Tama HospitalKawasakiJapan
| | - Fumio Itoh
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
| | - Keisuke Tateishi
- Department of Internal Medicine, Division of Gastroenterology and HepatologySt. Marianna University School of MedicineKawasakiJapan
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23
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Motegi N, Matsumoto S, Kubo T, Izawa S, Ikeda H, Takahashi M, Koda S. [Characteristics of compensated mental disorders caused by overwork among drivers and non-drivers in the Japanese trucking industry]. Sangyo Eiseigaku Zasshi 2022; 64:244-252. [PMID: 34866064 DOI: 10.1539/sangyoeisei.2021-026-e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
OBJECTIVES This study examined the characteristics of occupational mental disorders among those involved in the transport and postal activities in the trucking industry. METHOD We examined 237 out of 3,517 cases of occupational mental disorders, compensated between the fiscal years 2010 and 2017. An assessment was made for sex, "life-or-death" status at compensation, age at the onset and suicide, the diagnosis according to the International Classification of Diseases, Tenth Revision, and other factors regarding occupational compensation. The participants were divided into two groups: truck drivers and non-truck drivers. RESULTS Men accounted for approximately 90% of the cases. Depressive episode (F32) was the most common diagnosis in drivers and non-drivers, thus constituting 65 out of 149 and 48 out of 88 cases, respectively. The next most common type of mental disorder was adjustment disorders (F43.2), with 34 out of 149 drivers and 24 out of 88 non-drivers reporting them. Furthermore, the majority of drivers that had posttraumatic stress disorder (24 out of 27 cases) reported that they "suffered a serious illness or injury" and "experienced or witnessed a terrible accident or disaster." Occupational disasters due to long working hours were 52.4% for drivers and 73.9% for non-drivers. A total of 30.8% of the drivers reported working long hours since they joined the company. CONCLUSION Drivers' long working hours entail waiting at the origin and cargo destination site, handling cargo, and incidental tasks other than driving. Thus, the reduction in work hours regarding these tasks needs to be a fundamental goal, and measures that include mental health care for accidents and miserable experiences must be implemented. However, long working hours for non-drivers are likely linked to job expansion/increase and reassignment/relocation. These findings highlight that to prevent overwork-related mental disorders, appropriate actions should be taken considering different sources of exposure for drivers or non-drivers.
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Affiliation(s)
| | - Shun Matsumoto
- National Institute of Occupational Safety and Health, Japan
| | - Tomohide Kubo
- National Institute of Occupational Safety and Health, Japan
| | - Shuhei Izawa
- National Institute of Occupational Safety and Health, Japan
| | - Hiroki Ikeda
- National Institute of Occupational Safety and Health, Japan
| | | | - Shigeki Koda
- National Institute of Occupational Safety and Health, Japan
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24
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Ikeda H, Kubo T, Izawa S, Nakamura-Taira N, Yoshikawa T, Akamatsu R. The Joint Association of Daily Rest Periods and Sleep Duration with Worker Health and Productivity: A Cross-Sectional Web Survey of Japanese Daytime Workers. Int J Environ Res Public Health 2022; 19:11143. [PMID: 36078859 PMCID: PMC9518178 DOI: 10.3390/ijerph191711143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/02/2022] [Accepted: 09/03/2022] [Indexed: 06/15/2023]
Abstract
A daily rest period (DRP) is a daily inter-work interval that contains sleep opportunity. This study investigates the joint association of DRP and sleep duration with worker health and productivity. A total of 13,306 Japanese daytime workers participated in this web-based cross-sectional survey. Participants reported on their DRPs and sleep duration; moreover, sleep difficulties, mental health, and presenteeism were assessed by the standardized questionnaires. The participants were divided into 10 groups based on their DRPs and sleep duration. Logistic regression analyses showed that the combination of quick return (QR: DRP of <11 h) and short sleep duration (<6 h) was found to be significantly associated with sleep difficulties (odds ratio [OR] = 4.45, 95% confidence interval [CI] = 2.83-7.01), poor mental health (OR = 3.04, 95% CI = 1.79-5.15), and presenteeism (OR = 2.35, 95% CI = 1.47-3.77) compared with the reference group (the combination of adequate DRP [15 h] and a normal sleep duration [≥6 h]). The combination of QR and normal sleep duration or adequate DRP and short sleep duration was significantly associated with high ORs for the outcomes. QR, short sleep duration, or both negatively affect worker health and productivity.
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Affiliation(s)
- Hiroki Ikeda
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki 214-8585, Japan
| | - Tomohide Kubo
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki 214-8585, Japan
| | - Shuhei Izawa
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki 214-8585, Japan
| | - Nanako Nakamura-Taira
- Department of Psychology, Faculty of Letters, Chuo University, Tokyo 192-0393, Japan
| | - Toru Yoshikawa
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki 214-8585, Japan
| | - Rie Akamatsu
- Natural Science Division, Faculty of Core Research, Ochanomizu University, Tokyo 112-8610, Japan
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25
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Sato Y, Sumikawa H, Shibaki R, Morimoto T, Sakata Y, Oya Y, Tamiya M, Suzuki H, Matsumoto H, Kijima T, Hashimoto K, Kobe H, Hino A, Inaba M, Tsukita Y, Ikeda H, Arai D, Maruyama H, Sakata S, Fujimoto D. 1103P Drug-related pneumonitis induced by osimertinib as first-line treatment for EGFR-positive non-small cell lung cancer: A real-world setting. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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26
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Shigefuku R, Takahashi H, Watanabe T, Hattori N, Ikeda H, Matsunaga K, Ehira T, Suzuki T, Matsumoto N, Okuse C, Iwasa M, Nakagawa H, Itoh F, Suzuki M. Effects of endoscopic injection sclerotherapy for esophagogastric varices on portal hemodynamics and liver function. BMC Gastroenterol 2022; 22:350. [PMID: 35864442 PMCID: PMC9306194 DOI: 10.1186/s12876-022-02422-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 07/06/2022] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES To identify patients suitable for endoscopic injection sclerotherapy (EIS) by evaluating their portal hemodynamics and liver function. METHODS We selected 58 patients with esophagogastric varices (EGV) and liver cirrhosis (LC) related to either hepatitis C virus (C) (n = 19), hepatitis B virus (n = 2), alcohol (AL) (n = 20), C + AL (n = 6), non-alcoholic steatohepatitis (n = 6), others (n = 3), or non-LC (n = 2). All patients underwent EIS. We measured their portal venous tissue blood flow (PVTBF) and hepatic arterial tissue blood flow (HATBF) using xenon computed tomography before and after EIS. We classified them into increased group and decreased group according to the PVTBF to identify the predictors that contribute to PVTBF increase post-EIS. RESULTS Low value of indocyanine green retention at 15 min (ICG-R15), the absence of paraesophageal veins, and low baseline PVTBF/HATBF (P/A) ratio predicted increased PVTBF in the multivariate logistic analysis (odds ratio (OR) 10.46, p = 0.0391; OR 12.45, p = 0.0088; OR 13.57, p = 0.0073). The protein synthetic ability improved 1 year post-EIS in increased group. Cox proportional hazards regression identified alcohol drinking (hazard ratio; 3.67, p = 0.0261) as an independent predictor of EGV recurrence. CONCLUSIONS Patients with low ICG-R15, low P/A ratio, and the absence of paraesophageal veins were probable predictors of PVTBF improvement post-EIS. In addition, the improvement of hepatic hemodynamics likely enhanced liver function following EIS.
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Affiliation(s)
- Ryuta Shigefuku
- Department of Gastroenterology and Hepatology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, 514-8507, Japan. .,Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan.
| | - Hideaki Takahashi
- Department of Gastroenterology and Hepatology, Yokohama City Seibu Hospital, St. Marianna University, Yokohama, Japan.,Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan
| | - Tsunamasa Watanabe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan
| | - Nobuhiro Hattori
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan
| | - Hiroki Ikeda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan
| | - Kotaro Matsunaga
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan
| | - Takuya Ehira
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan
| | - Tatsuya Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan
| | - Nobuyuki Matsumoto
- Department of Gastroenterology and Hepatology, Yokohama City Seibu Hospital, St. Marianna University, Yokohama, Japan
| | - Chiaki Okuse
- Division of General Internal Medicine, Department of Internal Medicine, Kawasaki Municipal Tama Hospital, Kawasaki, Japan
| | - Motoh Iwasa
- Department of Gastroenterology and Hepatology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, 514-8507, Japan
| | - Hayato Nakagawa
- Department of Gastroenterology and Hepatology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, 514-8507, Japan
| | - Fumio Itoh
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan
| | - Michihiro Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, St. Marianna University, Kawasaki, 216-8511, Japan.,Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kawasaki Municipal Tama Hospital, Kawasaki, Japan
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27
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Nagano M, Hu B, Yokobayashi S, Yamamura A, Umemura F, Coradin M, Ohta H, Yabuta Y, Ishikura Y, Okamoto I, Ikeda H, Kawahira N, Nosaka Y, Shimizu S, Kojima Y, Mizuta K, Kasahara T, Imoto Y, Meehan K, Stocsits R, Wutz G, Hiraoka Y, Murakawa Y, Yamamoto T, Tachibana K, Peters JM, Mirny LA, Garcia BA, Majewski J, Saitou M. Nucleome programming is required for the foundation of totipotency in mammalian germline development. EMBO J 2022; 41:e110600. [PMID: 35703121 DOI: 10.15252/embj.2022110600] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/27/2022] [Accepted: 04/29/2022] [Indexed: 11/09/2022] Open
Abstract
Germ cells are unique in engendering totipotency, yet the mechanisms underlying this capacity remain elusive. Here, we perform comprehensive and in-depth nucleome analysis of mouse germ-cell development in vitro, encompassing pluripotent precursors, primordial germ cells (PGCs) before and after epigenetic reprogramming, and spermatogonia/spermatogonial stem cells (SSCs). Although epigenetic reprogramming, including genome-wide DNA de-methylation, creates broadly open chromatin with abundant enhancer-like signatures, the augmented chromatin insulation safeguards transcriptional fidelity. These insulatory constraints are then erased en masse for spermatogonial development. Notably, despite distinguishing epigenetic programming, including global DNA re-methylation, the PGCs-to-spermatogonia/SSCs development entails further euchromatization. This accompanies substantial erasure of lamina-associated domains, generating spermatogonia/SSCs with a minimal peripheral attachment of chromatin except for pericentromeres-an architecture conserved in primates. Accordingly, faulty nucleome maturation, including persistent insulation and improper euchromatization, leads to impaired spermatogenic potential. Given that PGCs after epigenetic reprogramming serve as oogenic progenitors as well, our findings elucidate a principle for the nucleome programming that creates gametogenic progenitors in both sexes, defining a basis for nuclear totipotency.
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Affiliation(s)
- Masahiro Nagano
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Bo Hu
- Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Shihori Yokobayashi
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Akitoshi Yamamura
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Fumiya Umemura
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mariel Coradin
- Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA, USA.,Penn Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Molecular, Cellular, and Developmental Biology, University of Colorado Boulder, Boulder, CO, USA
| | - Hiroshi Ohta
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yukihiro Yabuta
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yukiko Ishikura
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ikuhiro Okamoto
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroki Ikeda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.,Department of Embryology, Nara Medical University, Nara, Japan
| | - Naofumi Kawahira
- Department of Molecular Cell Developmental Biology, School of Life Science, University of California, Los Angeles, CA, USA.,Laboratory for Developmental Morphogeometry, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Yoshiaki Nosaka
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sakura Shimizu
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoji Kojima
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Ken Mizuta
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomoko Kasahara
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Yusuke Imoto
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan
| | - Killian Meehan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan
| | - Roman Stocsits
- Research Institute of Molecular Pathology, Vienna BioCenter, Vienna, Austria
| | - Gordana Wutz
- Research Institute of Molecular Pathology, Vienna BioCenter, Vienna, Austria
| | - Yasuaki Hiraoka
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan
| | - Yasuhiro Murakawa
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Takuya Yamamoto
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.,Medical-risk Avoidance based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project, Kyoto, Japan
| | - Kikue Tachibana
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna BioCenter, Vienna, Austria.,Department of Totipotency, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Jan-Michel Peters
- Research Institute of Molecular Pathology, Vienna BioCenter, Vienna, Austria
| | - Leonid A Mirny
- Institute for Medical Engineering and Science, and Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Benjamin A Garcia
- Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA, USA.,Penn Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO, USA
| | - Jacek Majewski
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Mitinori Saitou
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
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28
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Izawa S, Nakamura-Taira N, Yoshikawa T, Akamatsu R, Ikeda H, Kubo T. Conversation time and mental health during the COVID-19 pandemic: A web-based cross-sectional survey of Japanese employees. J Occup Health 2022; 64:e12334. [PMID: 35535665 PMCID: PMC9176736 DOI: 10.1002/1348-9585.12334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/18/2022] [Accepted: 04/21/2022] [Indexed: 11/07/2022] Open
Abstract
Objective During the Coronavirus disease 2019 (COVID‐19) pandemic, social isolation and impaired social interaction could be the factors that cause mental health problems. This study investigated the association between conversation time in daily life and mental health among Japanese employees. Methods In August 2021, a web‐based cross‐sectional survey was conducted with 1000 Japanese employees. Weekly conversation time was assessed in four domains (family members, friends, someone in the workplace, and others), and mental health was assessed using the Japanese version of the Kessler Psychological Distress Scale (K6 scale). Weekly total conversation time was calculated, and participants were assigned to one of the four conversation time categories based on quantile values to investigate the associations with poor mental health (K6 ≥ 13). Results The logistic regression analyses revealed that participants with short conversation times (<3.5 h per week) had poorer mental health compared to those with long conversation times (> 21.0 h per week), even after adjusting for confounders (OR = 2.48 [95% CI 1.31–4.71]). For the exploratory analyses of conversation time for each domain, the associations of short conversation time in the workplace with poor mental health was most robust (OR =2.02 [95% CI 1.13–3.63]). Conclusions Japanese employees with conversation time of <3.5 h per week (i.e., 30 min per day) had poor mental health. During the COVID‐19 pandemic, people have largely limited opportunities to have conversations with others, but a certain level of conversation time might be required to maintain mental health.
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Affiliation(s)
- Shuhei Izawa
- National Institute of Occupational Safety and Health, Kawasaki, Japan
| | | | - Toru Yoshikawa
- National Institute of Occupational Safety and Health, Kawasaki, Japan
| | - Rie Akamatsu
- Natural Science Division, Faculty of Core Research, Ochanomizu University, Tokyo, Japan
| | - Hiroki Ikeda
- National Institute of Occupational Safety and Health, Kawasaki, Japan
| | - Tomohide Kubo
- National Institute of Occupational Safety and Health, Kawasaki, Japan
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29
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Tachibana S, Sawada H, Okazaki R, Takano Y, Sakamoto K, Miura YN, Okamoto C, Yano H, Yamanouchi S, Michel P, Zhang Y, Schwartz S, Thuillet F, Yurimoto H, Nakamura T, Noguchi T, Yabuta H, Naraoka H, Tsuchiyama A, Imae N, Kurosawa K, Nakamura AM, Ogawa K, Sugita S, Morota T, Honda R, Kameda S, Tatsumi E, Cho Y, Yoshioka K, Yokota Y, Hayakawa M, Matsuoka M, Sakatani N, Yamada M, Kouyama T, Suzuki H, Honda C, Yoshimitsu T, Kubota T, Demura H, Yada T, Nishimura M, Yogata K, Nakato A, Yoshitake M, Suzuki AI, Furuya S, Hatakeda K, Miyazaki A, Kumagai K, Okada T, Abe M, Usui T, Ireland TR, Fujimoto M, Yamada T, Arakawa M, Connolly HC, Fujii A, Hasegawa S, Hirata N, Hirata N, Hirose C, Hosoda S, Iijima Y, Ikeda H, Ishiguro M, Ishihara Y, Iwata T, Kikuchi S, Kitazato K, Lauretta DS, Libourel G, Marty B, Matsumoto K, Michikami T, Mimasu Y, Miura A, Mori O, Nakamura-Messenger K, Namiki N, Nguyen AN, Nittler LR, Noda H, Noguchi R, Ogawa N, Ono G, Ozaki M, Senshu H, Shimada T, Shimaki Y, Shirai K, Soldini S, Takahashi T, Takei Y, Takeuchi H, Tsukizaki R, Wada K, Yamamoto Y, Yoshikawa K, Yumoto K, Zolensky ME, Nakazawa S, Terui F, Tanaka S, Saiki T, Yoshikawa M, Watanabe S, Tsuda Y. Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth. Science 2022; 375:1011-1016. [PMID: 35143255 DOI: 10.1126/science.abj8624] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Hayabusa2 spacecraft investigated the C-type (carbonaceous) asteroid (162173) Ryugu. The mission performed two landing operations to collect samples of surface and subsurface material, the latter exposed by an artificial impact. We present images of the second touchdown site, finding that ejecta from the impact crater was present at the sample location. Surface pebbles at both landing sites show morphological variations ranging from rugged to smooth, similar to Ryugu's boulders, and shapes from quasi-spherical to flattened. The samples were returned to Earth on 6 December 2020. We describe the morphology of >5 grams of returned pebbles and sand. Their diverse color, shape, and structure are consistent with the observed materials of Ryugu; we conclude that they are a representative sample of the asteroid.
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Affiliation(s)
- S Tachibana
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Sawada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R Okazaki
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - Y Takano
- Biogeochemistry Research Center, Japan Agency for Marine-Earth Science and Technology, Kanagawa 237-0061, Japan
| | - K Sakamoto
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y N Miura
- Earthquake Research Institute, The University of Tokyo, Tokyo 113-0032, Japan
| | - C Okamoto
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H Yano
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Yamanouchi
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - P Michel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - Y Zhang
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - S Schwartz
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA.,Planetary Science Institute, Tucson, AZ 85719, USA
| | - F Thuillet
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - H Yurimoto
- Department of Earth and Planetary Sciences, Hokkaido University, Sapporo 060-0810, Japan
| | - T Nakamura
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - T Noguchi
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan.,Division of Earth and Planetary Sciences, Kyoto University, Kyoto, Japan
| | - H Yabuta
- Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - H Naraoka
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - A Tsuchiyama
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu 525-8577, Japan.,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - N Imae
- Polar Science Resources Center, National Institute of Polar Research, Tokyo 190-8518, Japan
| | - K Kurosawa
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - A M Nakamura
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - K Ogawa
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - S Sugita
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Morota
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - R Honda
- Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - S Kameda
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - E Tatsumi
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Instituto de Astrofísica de Canarias, University of La Laguna, E-38205 Tenerife, Spain
| | - Y Cho
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Yoshioka
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Matsuoka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Sakatani
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - M Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Kouyama
- Information Technology and Human Factors, National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan
| | - H Suzuki
- Department of Physics, Meiji University, Kawasaki 214-8571, Japan
| | - C Honda
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Yoshimitsu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Kubota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Demura
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Yada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Nishimura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yogata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Nakato
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshitake
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A I Suzuki
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan.,Department of Economics, Toyo University, Tokyo 112-8606, Japan
| | - S Furuya
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Hatakeda
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan
| | - A Miyazaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Kumagai
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan
| | - T Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Abe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Usui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T R Ireland
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - M Fujimoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Yamada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Arakawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H C Connolly
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA.,Department of Geology, Rowan University, Glassboro, NJ 08028, USA
| | - A Fujii
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Hasegawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Hirata
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - N Hirata
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - C Hirose
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Iijima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Ikeda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ishiguro
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Y Ishihara
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - T Iwata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - S Kikuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - K Kitazato
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - D S Lauretta
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA
| | - G Libourel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - B Marty
- Université de Lorraine, Centre national de la recherche scientifique, Centre de Recherches Pétrographiques et Géochimiques, F-54000 Nancy, France
| | - K Matsumoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Michikami
- Department of Mechanical Engineering, Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Miura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - O Mori
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | | | - N Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - A N Nguyen
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - L R Nittler
- Carnegie Institution for Science, Washington, DC 20015, USA
| | - H Noda
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - R Noguchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Science, Niigata University, Niigata 950-2181, Japan
| | - N Ogawa
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - G Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - H Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Shimada
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Shirai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Soldini
- Department of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool L69 3BX, UK
| | | | - Y Takei
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - R Tsukizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Wada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - K Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - K Yumoto
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - M E Zolensky
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - S Nakazawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - F Terui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Saiki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - S Watanabe
- Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Aeronautics and Astronautics, The University of Tokyo, Tokyo 113-0033, Japan
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30
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Nagura Y, Matsuura K, Iio E, Fujita K, Inoue T, Matsumoto A, Tanaka E, Nishiguchi S, Kang JH, Matsui T, Enomoto M, Ikeda H, Watanabe T, Okuse C, Tsuge M, Atsukawa M, Tateyama M, Kataoka H, Tanaka Y. Serum miR-192-5p levels predict the efficacy of pegylated interferon therapy for chronic hepatitis B. PLoS One 2022; 17:e0263844. [PMID: 35157730 PMCID: PMC8843190 DOI: 10.1371/journal.pone.0263844] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 01/27/2022] [Indexed: 12/30/2022] Open
Abstract
We examined the association between serum miRNA (-192-5p, -122-3p, -320a and -6126-5p) levels and the efficacy of pegylated interferon (Peg-IFN) monotherapy for chronic hepatitis B (CHB) patients. We enrolled 61 CHB patients treated with Peg-IFNα-2a weekly for 48 weeks, of whom 12 had a virological response (VR) and 49 did not VR (non-VR). A VR was defined as HBV DNA < 2,000 IU/ml, hepatitis B e antigen (HBeAg)-negative, and nucleos(t)ide analogue free at 48 weeks after the end of treatment. The non-VR group showed a significantly higher HBeAg-positivity rate, ALT, HBV DNA, and serum miR-192-5p levels at baseline (P = 0.024, P = 0.020, P = 0.007, P = 0.021, respectively). Serum miR-192-5p levels at 24-weeks after the start of treatment were also significantly higher in the non-VR than the VR group (P = 0.011). Multivariate logistic regression analysis for predicting VR showed that miR-192-5p level at baseline was an independent factor (Odds 4.5, P = 0.041). Serum miR-192-5p levels were significantly correlated with the levels of HBV DNA, hepatitis B core-related antigen, and hepatitis B surface antigen (r = 0.484, 0.384 and 0.759, respectively). The serum miR-192-5p level was useful as a biomarker for the therapeutic efficacy of Peg-IFN in CHB treatment.
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Affiliation(s)
- Yoshihito Nagura
- Departments of Virology & Liver Unit, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Kentaro Matsuura
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Etsuko Iio
- Departments of Virology & Liver Unit, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
| | - Takako Inoue
- Department of Clinical Laboratory Medicine, Nagoya City University Hospital, Nagoya, Aichi, Japan
| | - Akihiro Matsumoto
- Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Eiji Tanaka
- Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Shuhei Nishiguchi
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Jong-Hon Kang
- Division of Center for Gastroenterology, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Takeshi Matsui
- Division of Center for Gastroenterology, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Masaru Enomoto
- Department of Hepatology, Graduate School of Medicine, Osaka City University, Osaka, Osaka, Japan
| | - Hiroki Ikeda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Tsunamasa Watanabe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Chiaki Okuse
- Division of General Internal Medicine, Department of Internal Medicine, Kawasaki Municipal Tama Hospital, Kawasaki, Kanagawa, Japan
| | - Masataka Tsuge
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Hiroshima, Japan
| | - Masanori Atsukawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - Masakuni Tateyama
- Department of Gastroenterology and Hepatology Faculty of Life Sciences, Kumamoto University, Kumamoto, Kumamoto, Japan
| | - Hiromi Kataoka
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Yasuhito Tanaka
- Departments of Virology & Liver Unit, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
- Department of Gastroenterology and Hepatology Faculty of Life Sciences, Kumamoto University, Kumamoto, Kumamoto, Japan
- * E-mail:
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31
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HATA Y, Kuwabara T, Fujimoto D, Date R, Umemoto S, Kanki T, Nishiguchi Y, Kakizoe Y, Izumi Y, Ikeda H, Kakizuka A, Mukoyama M. POS-018 A NOVEL ATP-RETAINING COMPOUND, KUS121, ENHANCES ER-ASSOCIATED DEGRADATION AND EXERTS RENOPROTECTIVE EFFECTS AGAINST ACUTE KIDNEY INJURY. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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32
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Miyakoshi D, Watanabe A, Ikeda H, Mizuguchi Y. Arthroscopic guided repair of a slab fracture of the fourth carpal bone in an 8-month-old thoroughbred horse. J Equine Sci 2022; 32:143-146. [PMID: 35023992 PMCID: PMC8731689 DOI: 10.1294/jes.32.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 07/27/2021] [Indexed: 11/01/2022] Open
Abstract
An 8-month-old thoroughbred colt presented with sudden onset right forelimb lameness. A radiographic series of the right carpus was performed, and it revealed a slab fracture of the fourth carpal bone and fracture of the proximal part of the third metacarpal bone. Arthroscopically guided repair of the slab fracture of the fourth carpal bone with a 3.5 mm cortex screw and lag screw fixation of the fracture of the proximal part of the third metacarpal bone were performed. The horse started to race at 32 months old and started in 65 races over three years without any trouble associated with the right carpus.
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Affiliation(s)
- Daisuke Miyakoshi
- Hidaka Horse Breeders Association, Hokkaido 056-0002, Japan.,Present address: Mitsuishi Animal Medical Center, NOSAI Minami, Hokkaido 059-3105, Japan
| | | | - Hiroki Ikeda
- Hidaka Horse Breeders Association, Hokkaido 056-0002, Japan
| | - Yuya Mizuguchi
- Hidaka Horse Breeders Association, Hokkaido 056-0002, Japan
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33
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Miyakoshi D, Higuchi T, Ikeda H, Sato M, Yoshimura S. Fixation of a scapular body fracture in a 5 month old foal using three 4.5/5.0 mm locking compression plates. Vet Surg 2021; 51:330-334. [PMID: 34866213 DOI: 10.1111/vsu.13749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 09/07/2021] [Accepted: 10/30/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To report a surgical technique and an outcome for the repair of a displaced, transverse scapular body fracture with locking compression plates (LCPs) in a colt. ANIMALS One 5 month old Thoroughbred colt. STUDY DESIGN Case report. METHODS A colt sustained an unstable, comminuted, transverse fracture of the scapular body. Three 4.5/5.0 mm LCPs were used with 6.5 mm cancellous screws, 4.5 mm cortex screws, and 5.0 mm locking head screws. Implants were removed 2 months after surgery. RESULTS Surgical site infection was identified by purulent discharge at the distal aspect of the suture line 3 days after surgery. The surgical site infection resolved with daily lavage within 15 days after surgery. Three months after internal fixation of the scapular body fracture, the colt was sound and was turned out to pasture. One year later, the colt was sound and in training to be a flat racehorse. CONCLUSION Repair of a scapular body fracture using LCP provided a good outcome with an early return to soundness. The LCP system can therefore be considered for the repair of scapular body fractures in small equids.
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Affiliation(s)
| | - Tohru Higuchi
- Mitsuishi Animal Medical Center, NOSAI Minami, Shinhidaka, Japan
| | - Hiroki Ikeda
- Hidaka Horse Breeders Association, Shinhidaka, Japan
| | - Masato Sato
- Mitsuishi Animal Medical Center, NOSAI Minami, Shinhidaka, Japan
| | - Seiji Yoshimura
- Mitsuishi Animal Medical Center, NOSAI Minami, Shinhidaka, Japan
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34
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Kubo T, Izawa S, Ikeda H, Tsuchiya M, Miki K, Takahashi M. Work e-mail after hours and off-job duration and their association with psychological detachment, actigraphic sleep, and saliva cortisol: A 1-month observational study for information technology employees. J Occup Health 2021; 63:e12300. [PMID: 34837278 PMCID: PMC8626826 DOI: 10.1002/1348-9585.12300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 10/27/2021] [Accepted: 11/14/2021] [Indexed: 11/25/2022] Open
Abstract
Objective A sufficient duration of time off after work is necessary to ensure workers’ health. Better quality of off‐job time can also facilitate recovery from fatigue, but its quantitative influence is largely unknown. We aimed to examine how off‐job time quality (as measured by the frequency of emailing after work), and off‐job duration is associated with psychological detachment, actigraphic sleep, and saliva cortisol using a 1‐month observational study. Methods The participants were 58 daytime employees working at an information technology company. Sleep actigraphy and saliva cortisol as well as self‐reported outcomes were repeatedly measured for 1 month. Two‐way (work e‐mail frequency × off‐job time) multilevel mixed‐effects linear regression analyses were performed in both continuous and categorical variables. Results The frequency of work e‐mailing after hours was significantly associated with self‐reported outcomes and actigraphic sleep quality, while a significant association was not found in cortisol awakening responses and actigraphic sleep duration. A significantly larger cortisol response after awakening was found in shorter, rather than longer, durations of off‐job time. Self‐reported detachment, rumination and carry‐over fatigue showed significant interactions between work e‐mail and off‐job time, suggesting that worse outcomes were found in a higher frequency of work e‐mail even when employees had longer amounts of off‐job time. Conclusion Our findings suggest that ensuring the quality and duration of off‐job time is beneficial for recovery from work with sufficient sleep. Specifically, the frequency of e‐mailing after work should be minimized to make recovery complete.
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Affiliation(s)
- Tomohide Kubo
- National Institute of Occupational Safety and Health, Kawasaki, Japan
| | - Shuhei Izawa
- National Institute of Occupational Safety and Health, Kawasaki, Japan
| | - Hiroki Ikeda
- National Institute of Occupational Safety and Health, Kawasaki, Japan
| | | | - Keiichi Miki
- National Institute of Occupational Safety and Health, Kawasaki, Japan
| | - Masaya Takahashi
- National Institute of Occupational Safety and Health, Kawasaki, Japan
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35
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Satta Y, Shigefuku R, Watanabe T, Mizukami T, Tsuda T, Suzuki T, Ehira T, Hattori N, Kiyokawa H, Nakahara K, Ikeda H, Matsunaga K, Takahashi H, Matsumoto N, Okuse C, Suzuki M, Sunakawa Y, Yasuda H, Itoh F. Prediction of esophagogastric varices associated with oxaliplatin administration. JGH Open 2021; 5:1289-1297. [PMID: 34816015 PMCID: PMC8593783 DOI: 10.1002/jgh3.12668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 12/13/2022]
Abstract
Background Oxaliplatin is a key drug for the chemotherapy of colorectal cancer; however, it is also known to cause non‐cirrhotic portal hypertension. We aimed to identify the characteristics of patients who developed esophagogastric varices (EGVs) after treatment with oxaliplatin. Methods This study retrospectively analyzed patients with colorectal cancer who were treated with chemotherapy including oxaliplatin between 2010 and 2016. All patients were evaluated by contrast‐enhanced computed tomography (CE‐CT) every 3 months both during and after treatment; and endoscopy was performed when appearance of portal hypertension was suspected. Results A total of 106 patients were divided into two groups: EGV formation (n = 6) and EGV non‐formation (n = 100). In the EGV group, platelet counts decreased and the size of the spleen calculated by CT (CT spleen index; CT‐SI) increased markedly. The highest area under the receiver operating characteristic curve (AUC) for the change in platelet counts was 0.81 (80% sensitivity and 83% specificity) at 3 months post treatment, and the maximum AUC for CT‐SI was 0.89 (79% sensitivity and 83% specificity) at 6 months post treatment. Conclusions EGV formation could be predicted by the assessment of platelet counts and spleen size. If progressive splenomegaly and thrombocytopenia are observed not only during but also after completion of the oxaliplatin‐containing chemotherapy, EGVs should be confirmed by endoscopy for avoiding subsequent rupture.
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Affiliation(s)
- Yosuke Satta
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Ryuta Shigefuku
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan.,Department of Gastroenterology and Hepatology Mie University Graduate School of Medicine Tsu Japan
| | - Tsunamasa Watanabe
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Takuro Mizukami
- Department of Clinical Oncology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Takashi Tsuda
- Department of Clinical Oncology St. Marianna University School of Medicine Kawasaki Kanagawa Japan.,Center for Hepato-Biliary-Pancreatic and Digestive Disease Shonan Fujisawa Tokushukai Hospital Kanagawa Japan
| | - Tatsuya Suzuki
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Takuya Ehira
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Nobuhiro Hattori
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Hirofumi Kiyokawa
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Kazunari Nakahara
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Hiroki Ikeda
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Kotaro Matsunaga
- Division of Gastroenterology and Hepatology Kawasaki Tama Municipal Hospital Kawasaki Japan
| | - Hideaki Takahashi
- Division of Gastroenterology Yokohama City Seibu Hospital Yokohama Japan
| | - Nobuyuki Matsumoto
- Division of Gastroenterology Yokohama City Seibu Hospital Yokohama Japan
| | - Chiaki Okuse
- Division of General Internal Medicine, Department of Internal Medicine Kawasaki Tama Municipal Hospital Kawasaki Japan
| | - Michihiro Suzuki
- Division of Gastroenterology and Hepatology Kawasaki Tama Municipal Hospital Kawasaki Japan
| | - Yu Sunakawa
- Department of Clinical Oncology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Hiroshi Yasuda
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Fumio Itoh
- Division of Gastroenterology and Hepatology St. Marianna University School of Medicine Kawasaki Kanagawa Japan
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36
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Kawasaki T, Ooka S, Mizushima M, Nakamura Y, Ikeda H, Sakurada T, Suzuki S, Yamazaki K, Goto Y, Sakurai K, Yukitaka Y, Kiyokawa T, Tonooka K, Kunishima H, Kawahata K. COVID-19 and Adult-onset Still's Disease as part of Hyperferritinemic Syndromes. Mod Rheumatol Case Rep 2021; 6:101-105. [PMID: 34592766 PMCID: PMC8500156 DOI: 10.1093/mrcr/rxab032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 06/29/2021] [Accepted: 09/02/2021] [Indexed: 01/08/2023]
Abstract
The coronavirus disease (COVID-19) is known to cause hyperferritinemia and hemophagocytic lymphohistiocytosis (HLH). Including this laboratory parameter, clinical symptoms similar to COVID-19 have been observed in adult-onset Still’s disease (AOSD), catastrophic antiphospholipid syndrome (CAPS), macrophage activation syndrome (MAS), and septic shock, which has led to the proposal of a concept called ‘hyperferritinemic syndromes.’ Additionally, high levels of some clinical markers in both COVID-19 and AOSD make them difficult to differentiate. While the efficacy of ciclesonide had been expected for mild pneumonia with COVID-19, the efficacy of tocilizumab, which is a known treatment for AOSD, was not established. Here, we report the first known occurrence of COVID-19, diagnosed in March 2020, preceded by the diagnosis of AOSD, in April 2019, in a 65-year-old, otherwise healthy man. Following the diagnosis of the latter, the patient was first given prednisolone and then tocilizumab, which led to remission. With the recurrence of joint pain and rash in March 2020, accompanied by low oxygen saturation levels (90%), and ground-glass appearance on chest CT, PCR test revealed COVID-19 infection. Ciclesonide was started on day 7 of the disease onset, which led to improved inflammatory markers by day 21. Thus, we infer that while tocilizumab is theoretically useful for COVID-19 due to its inhibition of interleukin 6 (IL-6), additional ciclesonide therapy might be required to prevent worsening of the condition. AOSD and COVID-19 must, therefore, be differentiated by levels of ferritin which differ between the two, and appropriate treatment must be allocated.
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Affiliation(s)
- Tatsuya Kawasaki
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Seido Ooka
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Machiko Mizushima
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Yuta Nakamura
- Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Hiroki Ikeda
- Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Tsutomu Sakurada
- Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Shotaro Suzuki
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Kazuko Yamazaki
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Yutaka Goto
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Keiichi Sakurai
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Yamasaki Yukitaka
- Department of Infectious Diseases, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Tomofumi Kiyokawa
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Kumiko Tonooka
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Hiroyuki Kunishima
- Department of Infectious Diseases, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Kimito Kawahata
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
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Nishimura T, Oyama T, Hu HT, Fujioka T, Hanawa-Suetsugu K, Ikeda K, Yamada S, Kawana H, Saigusa D, Ikeda H, Kurata R, Oono-Yakura K, Kitamata M, Kida K, Hikita T, Mizutani K, Yasuhara K, Mimori-Kiyosue Y, Oneyama C, Kurimoto K, Hosokawa Y, Aoki J, Takai Y, Arita M, Suetsugu S. Filopodium-derived vesicles produced by MIM enhance the migration of recipient cells. Dev Cell 2021; 56:842-859.e8. [PMID: 33756122 DOI: 10.1016/j.devcel.2021.02.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 12/31/2020] [Accepted: 02/23/2021] [Indexed: 12/19/2022]
Abstract
Extracellular vesicles (EVs) are classified as large EVs (l-EVs, or microvesicles) and small EVs (s-EVs, or exosomes). S-EVs are thought to be generated from endosomes through a process that mainly depends on the ESCRT protein complex, including ALG-2 interacting protein X (ALIX). However, the mechanisms of l-EV generation from the plasma membrane have not been identified. Membrane curvatures are generated by the bin-amphiphysin-rvs (BAR) family proteins, among which the inverse BAR (I-BAR) proteins are involved in filopodial protrusions. Here, we show that the I-BAR proteins, including missing in metastasis (MIM), generate l-EVs by scission of filopodia. Interestingly, MIM-containing l-EV production was promoted by in vivo equivalent external forces and by the suppression of ALIX, suggesting an alternative mechanism of vesicle formation to s-EVs. The MIM-dependent l-EVs contained lysophospholipids and proteins, including IRS4 and Rac1, which stimulated the migration of recipient cells through lamellipodia formation. Thus, these filopodia-dependent l-EVs, which we named as filopodia-derived vesicles (FDVs), modify cellular behavior.
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Affiliation(s)
- Tamako Nishimura
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Takuya Oyama
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Hooi Ting Hu
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Toshifumi Fujioka
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Kyoko Hanawa-Suetsugu
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Kazutaka Ikeda
- Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan; Cellular and Molecular Epigenetics Laboratory, Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan; Kazusa DNA Research Institute, 2-6-7 Kazusa, kamatari, Kisarazu, Chiba 292-0818, Japan
| | - Sohei Yamada
- Division of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Hiroki Kawana
- Laboratory of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Daisuke Saigusa
- Tohoku University Tohoku Medical Megabank Organization, 2-1, Seiryo-machi, Aoba-ku, Sendai 980-8573, Japan
| | - Hiroki Ikeda
- Department of Embryology, Nara Medical University, Kashihara 634-0813, Nara, Japan
| | - Rie Kurata
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Kayoko Oono-Yakura
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Manabu Kitamata
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Kazuki Kida
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Tomoya Hikita
- Division of Cancer Cell Regulation, Aichi Cancer Center Research Institute, 1-1 Kanokoden, Chikusa-ku, Nagoya 464-8681, Japan
| | - Kiyohito Mizutani
- Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Yuko Mimori-Kiyosue
- Laboratory for Molecular and Cellular Dynamics, RIKEN Center for Biosystems Dynamics Research, Minatojima-minaminachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Chitose Oneyama
- Division of Cancer Cell Regulation, Aichi Cancer Center Research Institute, 1-1 Kanokoden, Chikusa-ku, Nagoya 464-8681, Japan
| | - Kazuki Kurimoto
- Department of Embryology, Nara Medical University, Kashihara 634-0813, Nara, Japan
| | - Yoichiroh Hosokawa
- Division of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Junken Aoki
- Laboratory of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Yoshimi Takai
- Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan
| | - Makoto Arita
- Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan; Cellular and Molecular Epigenetics Laboratory, Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan; Division of Physiological Chemistry and Metabolism, Graduate School of Pharmaceutical Sciences, Keio University, Tokyo 105-0011, Japan
| | - Shiro Suetsugu
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan; Data Science Center, Nara Institute of Science and Technology, Ikoma 630-0192, Japan.
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Sato Y, Nakatsu-Inaba S, Matsuo Y, Yamashita M, Ikeda H, Yasuda H, Itoh F. Efficient Colonoscopic Identification of Colonic Bleeding Diverticulum Using Intradiverticular Water Injection with a Nontraumatic Tube. J Anus Rectum Colon 2021; 5:313-318. [PMID: 34395945 PMCID: PMC8321589 DOI: 10.23922/jarc.2021-012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/20/2021] [Indexed: 11/30/2022] Open
Abstract
Objectives: The colonoscopic identification of stigmata of recent hemorrhage (SRH) in patients with colonic diverticular bleeding (CDB) is difficult. Factors that influence the identification of SRH in the diagnosis of CDB were investigated. Methods: This was a retrospective study of 487 early colonoscopy patients with acute lower gastrointestinal bleeding who were diagnosed with CDB. Comorbidities, medications, bowel preparation, use of a transparent cap, use of a water-jet scope, colonoscopy by an expert colonoscopist, and use of a nontraumatic (NT) tube were assessed. A multivariate analysis was used to estimate the odds ratio and 95% confidence interval. Results: Of the 487 colonoscopy patients diagnosed with CDB, 191 (39%) were definitively identified with SRH. The use of a transparent cap, a water-jet scope, an expert colonoscopist, and an NT tube were independent predictive factors for SRH on univariate analysis. A multivariable logistic regression model showed that colonoscopy by an expert colonoscopist and the use of an NT tube were predictive factors for SRH. Conclusions: Intradiverticular water injection with an NT tube by an expert colonoscopist is useful in identifying CDB, and may help achieve effective endoscopic hemostasis.
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Affiliation(s)
- Yoshinori Sato
- Division of Gastroenterology and Hepatology, St. Marianna University School of Medicine
| | - Satoko Nakatsu-Inaba
- Division of Gastroenterology and Hepatology, St. Marianna University School of Medicine
| | - Yasumasa Matsuo
- Division of Gastroenterology and Hepatology, St. Marianna University School of Medicine
| | - Masaki Yamashita
- Division of Gastroenterology and Hepatology, St. Marianna University School of Medicine
| | - Hiroki Ikeda
- Division of Gastroenterology and Hepatology, St. Marianna University School of Medicine
| | - Hiroshi Yasuda
- Division of Gastroenterology and Hepatology, St. Marianna University School of Medicine
| | - Fumio Itoh
- Division of Gastroenterology and Hepatology, St. Marianna University School of Medicine
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Ikeda H, Kubo T, Sasaki T, Nishimura Y, Liu X, Matsuo T, So R, Matsumoto S, Takahashi M. Prospective changes in sleep problems in response to the daily rest period among Japanese daytime workers: A longitudinal web survey. J Sleep Res 2021; 31:e13449. [PMID: 34309947 PMCID: PMC9285359 DOI: 10.1111/jsr.13449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 07/05/2021] [Accepted: 07/13/2021] [Indexed: 11/29/2022]
Abstract
The daily rest period (DRP) is the daily inter‐work interval and can include a sleep opportunity, leisure time, and other non‐work time. A longer DRP may allow workers to increase time in bed (TIB) and adjust sleep timing, and that may reduce sleep problems such as short sleep duration, sleep debt, social jetlag, and poor sleep quality. The present study examined the longitudinal association between the DRP and these sleep problems among Japanese daytime workers. The DRP, TIB on workdays, sleep quality (Pittsburgh Sleep Quality Index [PSQI]), sleep debt and social jetlag were measured in November 2016 (n = 10,000) and February 2019 (n = 3,098). Of these, 955 permanent daytime workers were divided into five groups based on the change in the DRP duration: shortened ≥2 hr, shortened ≥1 hr, no change (<1 hr), extended ≥1 hr and extended ≥2 hr. Linear mixed‐model analysis revealed significant interaction (group × time) effects on the TIB, PSQI score and sleep debt (all p < 0.001), but not on social jetlag (p = 0.476). Post hoc comparisons revealed that the TIB was decreased, and the sleep debt was increased in the shortened ≥2 hr group, whereas the TIB was increased and PSQI score was improved in the extended ≥2 hr group (all p < 0.01). These findings suggest that an extension of the DRP improves sleep quantity and quality but not sleep debt and social jetlag. Aside from extending the DRP, ensuring a sufficient sleep duration and adjusting sleep timing during the DRP may also be needed to prevent sleep problems.
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Affiliation(s)
- Hiroki Ikeda
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Tomohide Kubo
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Takeshi Sasaki
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Yuki Nishimura
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Xinxin Liu
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Tomoaki Matsuo
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Rina So
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Shun Matsumoto
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
| | - Masaya Takahashi
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety, Kawasaki, Japan
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40
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Araki E, Mathieu C, Shiraiwa T, Maeda H, Ikeda H, Thoren F, Arya N, Asano M, Iqbal N. Long-term (52-week) efficacy and safety of dapagliflozin as an adjunct to insulin therapy in Japanese patients with type 1 diabetes: Subgroup analysis of the DEPICT-2 study. Diabetes Obes Metab 2021; 23:1496-1504. [PMID: 33620762 PMCID: PMC8251623 DOI: 10.1111/dom.14362] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 02/09/2021] [Accepted: 02/16/2021] [Indexed: 12/24/2022]
Abstract
AIM To examine the long-term efficacy and safety of dapagliflozin, a sodium-glucose co-transporter-2 (SGLT2) inhibitor used to treat type 1 diabetes, in the Japanese subpopulation of the DEPICT-2 study. MATERIALS AND METHODS Patients with type 1 diabetes were randomized to dapagliflozin 5 mg (n = 55), dapagliflozin 10 mg (n = 41) or placebo (n = 58) plus insulin for a 24-week, double-blind period followed by a 28-week, single-blind extension phase. RESULTS From baseline to 24 weeks, dapagliflozin reduced HbA1c compared with placebo (mean change of -0.58% and -0.80% for 5 and 10 mg, respectively), and an HbA1c reduction was observed up to 52 weeks. Compared with placebo, dapagliflozin 5 and 10 mg increased the proportion of patients achieving HbA1c reductions of 0.5% or more without severe hypoglycaemia events and reduced glycaemic variability assessed via continuous glucose monitoring. Both dapagliflozin doses decreased body weight and total daily insulin dose at 24 weeks compared with placebo; these reductions were maintained up to 52 weeks. Diabetic ketoacidosis occurred in both dapagliflozin groups (one and two cases, respectively) but not with placebo. CONCLUSIONS Efficacy and safety results from the Japanese subpopulation of the DEPICT-2 study were generally consistent with those from the overall population, indicating that long-term dapagliflozin adjunct to insulin therapy improves glycaemic control without an increased risk of hypoglycaemia but with a risk of diabetic ketoacidosis in Japanese patients with type 1 diabetes.
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Affiliation(s)
- Eiichi Araki
- Department of Metabolic Medicine, Faculty of Life SciencesKumamoto UniversityKumamotoJapan
| | - Chantal Mathieu
- Clinical and Experimental EndocrinologyUniversity of LeuvenLeuvenBelgium
| | | | | | | | | | - Niki Arya
- Biopharmaceuticals R&D, AstraZenecaGaithersburgMarylandUSA
| | | | - Nayyar Iqbal
- Biopharmaceuticals R&D, AstraZenecaGaithersburgMarylandUSA
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41
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Tsuchiya T, Noda R, Ikeda H, Maeda M, Sato F. Relationship between endogenous plasma adrenocorticotropic hormone concentration and reproductive performance in Thoroughbred broodmares. J Vet Intern Med 2021; 35:2002-2008. [PMID: 34028083 PMCID: PMC8295711 DOI: 10.1111/jvim.16145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 04/19/2021] [Accepted: 04/22/2021] [Indexed: 01/10/2023] Open
Abstract
Background Pituitary pars intermedia dysfunction (PPID) is an endocrine disorder the clinical signs of which include infertility, but few reports have examined the relationship between PPID and reproductive performance in broodmares. Hypothesis/Objective Broodmares with infertility of unknown etiology were screened for PPID using baseline endogenous plasma ACTH concentrations, and its relationship with subsequent reproductive performance was analyzed. Animals Sixty‐seven Thoroughbred broodmares. Methods Adrenocorticotropic hormone concentrations were measured in autumn. The broodmares were divided into 3 groups based on endogenous plasma ACTH concentration (low, <50 pg/mL; intermediate 50‐100 pg/mL; and high >100 pg/mL) as recommended by the Equine Endocrinology Group. We compared these results with those of other blood tests, clinical examinations, subsequent conception, and frequency of normal delivery. Results The numbers of horses per group (percentage) were 22 (32.8%), 20 (29.9%), and 25 (37.3%). The mean ± SD ages (years) were 11.1 ± 3.4, 12.1 ± 4.5, and 13.0 ± 4.3, with no significant difference among groups. Mean ± SD plasma cortisol concentrations (μg/dL) were 4.0 ± 1.6, 7.1 ± 1.4, and 7.6 ± 1.9, with the intermediate and high ACTH groups having significantly higher results than the low ACTH group (P < .001). Conception rates were 77.3%, 89.5%, and 56.5% and normal delivery rates were 77.2%, 84.2%, and 43.5% with the percentage of each significantly lower in the high ACTH group (P = .02, P = .008, respectively). Conclusions and Clinical Importance The study group of infertile broodmares may include horses with PPID. The reproductive performance of the high ACTH group was significantly lower than the other groups. Early diagnosis and treatment of infertile broodmares by screening plasma ACTH concentrations could help improve reproductive performance.
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Affiliation(s)
- Takeru Tsuchiya
- Northern Farm Tenei, Fukushima, Japan.,United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
| | - Ryusuke Noda
- Equine Medical Center, Hidaka Horse Breeders Association, Hokkaido, Japan
| | - Hiroki Ikeda
- Equine Medical Center, Hidaka Horse Breeders Association, Hokkaido, Japan
| | - Masaya Maeda
- Equine Medical Center, Hidaka Horse Breeders Association, Hokkaido, Japan
| | - Fumio Sato
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan.,Equine Research Institute, Japan Racing Association, Tochigi, Japan
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Abstract
Polymer-infiltrated ceramic network (PICN) composites are mechanically compatible with human enamel, and are therefore promising dental restorative materials. Fabrication technology for PICN composites used in tooth restorative material has been established through computer-aided design/computer-aided manufacturing (CAD/CAM) milling, however, to date, has not been successfully developed using 3-dimensional (3D) printing. This study aimed to develop a 3D-printable PICN composite as a restorative material. The PICN composite was fabricated using a specific method based on 3D printing. A 3D-printable precursor slurry containing a high concentration of silica nanoparticles was produced and 3D-printed using stereolithography (SLA). The 3D-printed object was sintered to obtain a nano-porous object, and subsequently infiltrated and polymerized with resin monomer. Three different fabrication condition combinations were used to produce the 3D-printed PICN composites, which were characterized based on microstructure, mechanical properties, inorganic content, physicochemical properties, and overall shrinkage. The 3D-printed PICN composites were also compared to 2 commercially available CAD/CAM composite blocks, namely a PICN composite and a dispersed-filler composite. The 3D-printed PICN composites exhibited a nano-sized dual-network structure comprising a silica skeleton with infiltrated resin. The 3D-printed PICN composite exhibited a similar Vickers hardness to enamel, and a similar elastic modulus to dentin. The 3D-printed PICN composite exhibited comparable flexural strength (>100 MPa) to the CAD/CAM block, and acceptable water sorption and solubility for practical use. Further, the 3D-printed model-crown underwent isotropic shrinkage during sintering without fatal deformation. Overall, the potential of this 3D-printable PICN composite as a restorative material with similar mechanical properties to human teeth was successfully demonstrated.
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Affiliation(s)
- M K Sodeyama
- Division of Oral Reconstruction and Rehabilitation, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan.,Division of Biomaterials, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - H Ikeda
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Y Nagamatsu
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - C Masaki
- Division of Oral Reconstruction and Rehabilitation, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - R Hosokawa
- Division of Oral Reconstruction and Rehabilitation, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - H Shimizu
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
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Matsumoto S, Kubo T, Izawa S, Ikeda H, Takahashi M, Koda S. [Examining the association between work-life factors and health disorders/excessive fatigue among Japanese truck drivers]. Sangyo Eiseigaku Zasshi 2021; 64:1-11. [PMID: 33642457 DOI: 10.1539/sangyoeisei.2020-041-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Karoshi problems (overwork-related deaths and disorders caused by cerebrovascular and cardiovascular diseases) still occur in Japan. Truck drivers, who are in one of the riskiest occupations, are reported to show an increased prevalence of hypertension, obesity, hyperlipidemia, and diabetes, which are characteristic of Karoshi. Their health problems also include excessive fatigue. This cross-sectional study aimed to examine the association between work-life factors and health disorders/excessive fatigue among Japanese truck drivers. METHODS We distributed a questionnaire regarding work hours, health status, lifestyle, burden of driving, and excessive fatigue to 5,410 truck drivers and collected a total of 1,947 responses, all from males. The association between work-life factors and health outcomes was evaluated by multivariable logistic regression analysis adjusted for age, drinking, and smoking status. RESULTS The prevalence rates of obesity, hypertension, hyperlipidemia, diabetes, cardiovascular disease, cerebrovascular disease, and excessive fatigue were 22.2%, 19.3%, 8.5%, 5.6%, 2.5%, 0.7%, and 6.0%, respectively. Significant associations were observed for long-haul trips (two days or more) with obesity (adjusted odds ratio 1.5 [95% Confidence Interval 1.1-2.1]), local and night trips with hypertension (1.5 [1.0-2.2]), early morning awakening on workdays with obesity (1.5 [1.1-2.1]), being indoor-oriented on weekends with hypertension (1.5 [1.1-2.0]); and heavy burden of driving at night with hyperlipidemia (2.0 [1.3-3.0]). The adjusted odds ratios were significant for waking after sleep onset (2.6 [1.2-5.3]) and lack of sleep satisfaction (2.7 [1.4-5.1]) on workdays, less than six hours of sleep (2.8 [1.0-7.8]) and lack of sleep satisfaction (2.8 [1.5-5.2]) on weekends, 0-3 days off per month (3.6 [1.3-10.2]), and heavy burden of driving at night (2.2 [1.0-4.8]) with excessive fatigue. CONCLUSIONS The present findings highlight that night and early morning work, heavy burden of night driving, and the resultant decreases in the quality and quantity of sleep may represent shared risk factors for health disorders and excessive fatigue among truck drivers. Adequate measures should be taken to limit the amount of night and early morning work, reduce the burden of night driving, and ensure days off for sleep opportunities and leisure activities, with the goal of preventing Karoshi.
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Affiliation(s)
- Shun Matsumoto
- National Institute of Occupational Safety and Health, Japan
| | - Tomohide Kubo
- National Institute of Occupational Safety and Health, Japan
| | - Shuhei Izawa
- National Institute of Occupational Safety and Health, Japan
| | - Hiroki Ikeda
- National Institute of Occupational Safety and Health, Japan
| | | | - Shigeki Koda
- National Institute of Occupational Safety and Health, Japan
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Miwa S, Nojima T, Alomesen AA, Ikeda H, Yamamoto N, Nishida H, Hayashi K, Takeuchi A, Igarashi K, Higuchi T, Yonezawa H, Araki Y, Morinaga S, Asano Y, Tsuchiya H. Associations of PD-L1, PD-L2, and HLA class I expression with responses to immunotherapy in patients with advanced sarcoma: post hoc analysis of a phase 1/2 trial. Clin Transl Oncol 2021; 23:1620-1629. [PMID: 33635466 DOI: 10.1007/s12094-021-02559-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 01/26/2021] [Indexed: 01/02/2023]
Abstract
BACKGROUND Although immunotherapy is thought to be a promising cancer treatment, most patients do not respond to immunotherapy. In this post hoc analysis of a phase 1/2 study, associations of programmed death ligand 1 (PD-L1), PD-L2, and HLA class I expressions with responses to dendritic cells (DCs)-based immunotherapy were investigated in patients with advanced sarcoma. METHODS This study enrolled 35 patients with metastatic and/or recurrent sarcomas who underwent DC-based immunotherapy. The associations of PD-L1, PD-L2, and HLA class I expressions in tumor specimens, which were resected before immunotherapy, with immune responses (increases of IFN-γ and IL-12) and oncological outcomes were evaluated. RESULTS Patients who were PD-L2 (+) showed lower increases of IFN-γ and IL-12 after DC-based immunotherapy than patients who were PD-L2 (-). The disease control (partial response or stable disease) rates of patients who were PD-L1 (+) and PD-L1 (-) were 0% and 22%, respectively. Disease control rates of patients who were PD-L2 (+) and PD-L2 (-) were 13% and 22%, respectively. Patients who were PD-L1 (+) tumors had significantly poorer overall survival compared with patients who were PD-L1 (-). No associations of HLA class I expression with the immune response or oncological outcomes were observed. CONCLUSIONS This study suggests that PD-L1 and PD-L2 are promising biomarkers of DC-based immunotherapy, and that addition of immune checkpoint inhibitors to DC-based immunotherapy may improve the outcomes of DC-based immunotherapy.
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Affiliation(s)
- S Miwa
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan.
| | - T Nojima
- Department of Pathology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - A A Alomesen
- Department of Pathology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - H Ikeda
- Department of Pathology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - N Yamamoto
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - H Nishida
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - K Hayashi
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - A Takeuchi
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - K Igarashi
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - T Higuchi
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - H Yonezawa
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - Y Araki
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - S Morinaga
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - Y Asano
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - H Tsuchiya
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
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Kubo T, Matsumoto S, Sasaki T, Ikeda H, Izawa S, Takahashi M, Koda S, Sasaki T, Sakai K. Shorter sleep duration is associated with potential risks for overwork-related death among Japanese truck drivers: use of the Karoshi prodromes from worker's compensation cases. Int Arch Occup Environ Health 2021; 94:991-1001. [PMID: 33527174 PMCID: PMC7849961 DOI: 10.1007/s00420-021-01655-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/15/2021] [Indexed: 11/26/2022]
Abstract
Purpose We aimed to cross-sectionally investigate how work and sleep conditions could be associated with excessive fatigue symptoms as an early sign of Karoshi (overwork-related cerebrovascular and cardiovascular diseases; CCVDs). Methods We distributed a questionnaire regarding work, sleep, and excessive fatigue symptoms to 5410 truck drivers, as the riskiest occupation for overwork-related CCVDs, and collected 1992 total samples (response rate: 36.8%). The research team collected 1564 investigation reports required for compensation for Karoshi. Of them, 190 reports listed the prodromes of Karoshi, which were used to develop the new excessive fatigue symptoms inventory. Results One-way analyses of variance showed that the excessive fatigue symptoms differed significantly by monthly overtime hours (p < 0.001), daily working time (p < 0.001), work schedule (p = 0.025), waiting time on-site (p = 0.049), number of night shifts (p = 0.011), and sleep duration on workdays (p < 0.001). Multivariate mixed-model regression analyses revealed shorter sleep duration as the most effective parameter for predicting excessive fatigue symptoms. Multiple logistic regression analysis confirmed that the occurrences of CCVDs were significantly higher in the middle [adjusted ORs = 3.56 (1.28–9.94)] and high-score groups [3.55 (1.24–10.21)] than in the low-score group. Conclusion The findings suggested that shorter sleep duration was associated more closely with a marked increase in fatigue, as compared with the other work and sleep factors. Hence, ensuring sleep opportunities could be targeted for reducing the potential risks of Karoshi among truck drivers. Supplementary Information The online version contains supplementary material available at 10.1007/s00420-021-01655-5.
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Affiliation(s)
- Tomohide Kubo
- National Institute of Occupational Safety and Health, 6-21-1, Nagao, Tama-ku, Kawasaki, 214-8585, Japan.
| | - Shun Matsumoto
- National Institute of Occupational Safety and Health, 6-21-1, Nagao, Tama-ku, Kawasaki, 214-8585, Japan
| | - Takeshi Sasaki
- National Institute of Occupational Safety and Health, 6-21-1, Nagao, Tama-ku, Kawasaki, 214-8585, Japan
| | - Hiroki Ikeda
- National Institute of Occupational Safety and Health, 6-21-1, Nagao, Tama-ku, Kawasaki, 214-8585, Japan
| | - Shuhei Izawa
- National Institute of Occupational Safety and Health, 6-21-1, Nagao, Tama-ku, Kawasaki, 214-8585, Japan
| | - Masaya Takahashi
- National Institute of Occupational Safety and Health, 6-21-1, Nagao, Tama-ku, Kawasaki, 214-8585, Japan
| | - Shigeki Koda
- National Institute of Occupational Safety and Health, 6-21-1, Nagao, Tama-ku, Kawasaki, 214-8585, Japan
| | - Tsukasa Sasaki
- Ohara Memorial Institute for Science of Labour, Tokyo, Japan
| | - Kazuhiro Sakai
- Ohara Memorial Institute for Science of Labour, Tokyo, Japan
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Kuroda N, Kusunoki Y, Osugi K, Ohigashi M, Azuma D, Ikeda H, Makino S, Otsuka A, Tamada D, Watanabe N, Washio K, Tsunoda T, Matsuo T, Konishi K, Katsuno T, Koyama H. Relationships between time in range, glycemic variability including hypoglycemia and types of diabetes therapy in Japanese patients with type 2 diabetes mellitus: Hyogo Diabetes Hypoglycemia Cognition Complications study. J Diabetes Investig 2021; 12:244-253. [PMID: 32594655 PMCID: PMC7858127 DOI: 10.1111/jdi.13336] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 06/10/2020] [Accepted: 06/19/2020] [Indexed: 12/20/2022] Open
Abstract
AIMS/INTRODUCTION Continuous glucose monitoring (CGM) metrics, such as times in range (TIR) and time below range, have been shown to be useful as clinical targets that complement glycated hemoglobin (HbA1c) for patients with type 2 diabetes mellitus. We investigated the relationships between TIR, glycemic variability and patient characteristics in patients with type 2 diabetes mellitus. MATERIALS AND METHODS We carried out continuous glucose monitoring in 281 outpatients with type 2 diabetes mellitus who participated in a multicenter cohort (Hyogo Diabetes Hypoglycemia Cognition Complications) study. RESULTS The results are shown as the median (interquartile range). The age, disease duration and HbA1c were 68 years (62-71 years), 13 years (7-23 years) and 6.9% (6.5-7.5%), respectively. TIR and standard deviation obtained by continuous glucose monitoring worsened significantly with increasing disease duration. Multiple regression analyses showed that disease duration (standard partial regression coefficient, β = -0.160, P = 0.003), diabetic peripheral neuropathy (β = -0.106, P = 0.033) and urinary albumin excretion (β = -0.100, P = 0.043) were useful explanatory factors for TIR. In contrast, HbA1c (β = -0.398, P < 0.001) and the use of antidiabetic drugs potentially associated with severe hypoglycemia (β = 0.180, P = 0.028), such as sulfonylureas, glinides and insulin, were useful explanatory factors for time below range in the elderly patients with type 2 diabetes mellitus. CONCLUSIONS The results of this study suggest that disease duration and diabetic complications are associated with TIR deterioration. In addition, low HbA1c levels and the use of antidiabetic drugs potentially associated with severe hypoglycemia might worsen the time below range in the elderly.
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Affiliation(s)
- Norihiro Kuroda
- Division of Diabetes, Endocrinology and Clinical ImmunologyDepartment of Internal MedicineHyogo College of MedicineNishinomiyaJapan
| | - Yoshiki Kusunoki
- Division of Diabetes, Endocrinology and Clinical ImmunologyDepartment of Internal MedicineHyogo College of MedicineNishinomiyaJapan
| | - Keiko Osugi
- Division of Diabetes, Endocrinology and Clinical ImmunologyDepartment of Internal MedicineHyogo College of MedicineNishinomiyaJapan
| | - Mana Ohigashi
- Division of Diabetes, Endocrinology and Clinical ImmunologyDepartment of Internal MedicineHyogo College of MedicineNishinomiyaJapan
| | | | | | | | | | | | | | - Kahori Washio
- Division of Diabetes, Endocrinology and Clinical ImmunologyDepartment of Internal MedicineHyogo College of MedicineNishinomiyaJapan
| | - Taku Tsunoda
- Division of Diabetes, Endocrinology and Clinical ImmunologyDepartment of Internal MedicineHyogo College of MedicineNishinomiyaJapan
| | - Toshihiro Matsuo
- Division of Diabetes, Endocrinology and Clinical ImmunologyDepartment of Internal MedicineHyogo College of MedicineNishinomiyaJapan
| | - Kosuke Konishi
- Division of Diabetes, Endocrinology and Clinical ImmunologyDepartment of Internal MedicineHyogo College of MedicineNishinomiyaJapan
| | - Tomoyuki Katsuno
- School of RehabilitationDepartment of Occupational TherapyHyogo University of Health SciencesKobeJapan
| | - Hidenori Koyama
- Division of Diabetes, Endocrinology and Clinical ImmunologyDepartment of Internal MedicineHyogo College of MedicineNishinomiyaJapan
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Ikeda H, Kubo T, Sasaki T, Liu X, Matsuo T, So R, Matsumoto S, Takahashi M. Daytime Workers with Longer Daily Rest Periods Have Smaller Sleep Debt and Social Jetlag: A Cross-Sectional Web Survey. Behav Sleep Med 2021; 19:99-109. [PMID: 31969021 DOI: 10.1080/15402002.2020.1714623] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Objectives: The work interval duration between the end of one workday and the start of the following workday is referred to as the daily rest period (DRP). The present study examined whether DRP - a proxy for sleep opportunity between work shifts - is associated with indicators of sleep debt and social jetlag among daytime workers. Methods: We used a web-based survey to gather data on demographics, average DRP in the previous month, time in bed (TIB), bedtime, wake-up time, and sleep timing on workdays and non-workdays. The Japanese daytime workers (n = 3,914) were divided into seven DRP groups (hours) as follows: <11, 11, 12, 13, 14, 15, and ≥16. Results: The two-way analyses of covariance (DRP group x day) for TIB, mid-sleep as sleep timing, bedtime, and wake-up time showed significant interactions (all p < .001). Specifically, TIB was significantly shorter, and mid-sleep and wake-up time were significantly earlier on workdays than on non-workdays, across all DRP groups (all p < .001). Additionally, the different values for TIB (sleep debt), sleep timing (social jetlag), bedtime, and wake-up time were calculated by subtracting workdays from non-workdays. The trend analysis showed that workers with longer DRP (sleep opportunity) had smaller differences in TIB, sleep timing, and wake-up time between workdays and non-workdays (all p < .001). Conclusions: Overall, daytime workers reported significant sleep debt and misalignment between work and free sleep-wake periods. However, workers with shorter DRPs (less sleep opportunity between shifts) reported significantly greater amounts of sleep debt and social jetlag than did workers with longer DRPs.
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Affiliation(s)
- Hiroki Ikeda
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety , Tama-ku, Kawasaki, Japan
| | - Tomohide Kubo
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety , Tama-ku, Kawasaki, Japan
| | - Takeshi Sasaki
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety , Tama-ku, Kawasaki, Japan
| | - Xinxin Liu
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety , Tama-ku, Kawasaki, Japan
| | - Tomoaki Matsuo
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety , Tama-ku, Kawasaki, Japan
| | - Rina So
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety , Tama-ku, Kawasaki, Japan
| | - Shun Matsumoto
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety , Tama-ku, Kawasaki, Japan
| | - Masaya Takahashi
- National Institute of Occupational Safety and Health, Japan Organization of Occupational Health and Safety , Tama-ku, Kawasaki, Japan
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Yamasaki Y, Ooka S, Tsuchida T, Nakamura Y, Hagiwara Y, Naitou Y, Ishibashi Y, Ikeda H, Sakurada T, Handa H, Nishine H, Takita M, Morikawa D, Yoshida H, Fujii S, Morisawa K, Takemura H, Fujitani S, Kunishima H. The peripheral lymphocyte count as a predictor of severe COVID-19 and the effect of treatment with ciclesonide. Virus Res 2020; 290:198089. [PMID: 32629085 PMCID: PMC7332917 DOI: 10.1016/j.virusres.2020.198089] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/01/2020] [Accepted: 07/02/2020] [Indexed: 12/20/2022]
Abstract
We investigated whether reduced lymphocyte count, could predict the development of severe COVID-19. We also examined whether ciclesonide could prevent the development of severe COVID-19 among patients with the predictors. This was a retrospective cohort study. Of the 30 included patients, 12, 14, and 4 were allocated to severe pneumonia, non-severe pneumonia, and non-pneumonia groups, respectively. The group of the low level of lymphocyte counts of the sixth day after onset was significantly intubated approximately three days later. The incidence of the severe pneumoniae requiring intubation are significantly lower in the patients treated with ciclesonide than without it (11.18 % vs 83.33 %, p = 0.0033). The lymphocyte count after ciclesonide treatment in the non-severe pneumonia group was significantly higher (p = 0. 0156) than before. The lymphocyte count could be used to identify patients that may develop severe COVID-19. Treatment with ciclesonide may prevent the development of severe COVID-19.
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Affiliation(s)
- Yukitaka Yamasaki
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Seido Ooka
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan.
| | - Tomoya Tsuchida
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Yuta Nakamura
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Yuta Hagiwara
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Yoshiyuki Naitou
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Yuki Ishibashi
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Hiroki Ikeda
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Tsutomu Sakurada
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Hiroshi Handa
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Hiroki Nishine
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Mumon Takita
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Daiki Morikawa
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Hideki Yoshida
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Shuichi Fujii
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | | | - Hiromu Takemura
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Shigeki Fujitani
- St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
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Sato Y, Uzui H, Aiki Y, Aoyama D, Yamaguchi J, Nodera M, Shiomi Y, Hasegawa K, Ikeda H, Tama N, Fukuoka Y, Morishita T, Ishida K, Miyazaki S, Tada H. Effects of PCSK9 inhibitor on adverse limb outcomes in patients with critical limb ischemia. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The proprotein convertase subtilisin/kexin type 9 inhibitor (PCSK9-I), evolocumab, reduced the risk of cardiovascular event in patients with peripheral artery disease in FOURIER trial. However, the effects of evolocumab on favorable limb outcomes in patients with critical limb ischemia (CLI) is still unclear.
Purpose
The aim of this study was to evaluate the impacts of evolocumab on favorable limb outcomes and lipid profile in patients with CLI.
Methods
This was a single center, prospective observational study. A total of 39 patients with CLI were enrolled between November 2016 to May 2019. The subjects were divided into 2 groups based on evolocumab administration: evolocumab-treated group: E group (mean 69.4±11.7 years, n=14) and evolocumab non-treated group: Non-E group (mean 74.0±8.8 years, n=25). Baseline characteristics were assessed at admission. Lipid profile was evaluated at admission, 1, 3, 6, 12 and 18 months. The primary outcome was defined 18-month amputation-free survival (AFS). The secondary outcomes were defined 18-month overall survival (OS) and wound-free limb salvage. Mean follow-up period was 18±11 months.
Results
The patients in E group had greater reduction in levels of LDL cholesterol and non-HDL cholesterol than those in Non-E group over time. The reduction in MDA-LDL level was maintained at 1, 3, 6, 12 months, respectively. The 18-month AFS rate in the E-group was significantly higher than those in the Non-E group (log-rank p=0.02). The patients receiving evolocumab had a lower hazard regarding AFS (hazard ratio, 0.12; 95% confidence interval, 0.02–0.94; P=0.043) and a higher proportion of wound-free limb salvage at 12 months (E group [92%] vs Non-E group [57%], P=0.034) and 18 months (92% vs 52%, P=0.03). Otherwise, evolocumab administration was not associated with 18-month OS (log-rank p=0.053).
Conclusions
Evolocumab administration may be associated with the favorable outcome of 18-month AFS in the patients with CLI. Additionally, long-term administration of evolocumab over 12 months may improve wound-free limb salvage.
Effects of evolocumab on limb outcomes
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Sato
- University of Fukui, Fukui, Japan
| | - H Uzui
- University of Fukui, Fukui, Japan
| | - Y Aiki
- University of Fukui, Fukui, Japan
| | - D Aoyama
- University of Fukui, Fukui, Japan
| | | | - M Nodera
- University of Fukui, Fukui, Japan
| | - Y Shiomi
- University of Fukui, Fukui, Japan
| | | | - H Ikeda
- University of Fukui, Fukui, Japan
| | - N Tama
- University of Fukui, Fukui, Japan
| | | | | | - K Ishida
- University of Fukui, Fukui, Japan
| | | | - H Tada
- University of Fukui, Fukui, Japan
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Fujita A, Nakahara K, Michikawa Y, Morita R, Suetani K, Sato J, Igarashi Y, Araki R, Ikeda H, Matsunaga K, Watanabe T, Itoh F. Pancreatic duct guidewire placement for biliary cannulation as a risk factor for stone residue after endoscopic transpapillary stone removal. BMC Gastroenterol 2020; 20:285. [PMID: 32831030 PMCID: PMC7446213 DOI: 10.1186/s12876-020-01428-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 08/17/2020] [Indexed: 02/08/2023] Open
Abstract
Background Recent improvements in stone extraction implements and apparatus have lessened the complexity of the endoscopic bile duct stone treatment. However, despite confirmation of complete removal, cases of residual stones have been reported, which can result in recurrent biliary symptoms, cholangitis, and pancreatitis and considerably increase cost given the need for repeat imaging and/or procedures. To date, risk factors for residual bile duct stones following endoscopic retrograde cholangiopancreatography (ERCP) extraction have not been thoroughly evaluated. This study retrospectively investigated the incidence and risk factors of residual bile duct stones following extraction via ERCP. Methods We retrospectively reviewed all ERCP cases that underwent endoscopic bile duct stone extraction between April 2014 and March 2019. A total of 505 patients were enrolled and evaluated for the incidence and risk factors of residual bile duct stones after ERCP. Results The rate of residual stones was 4.8% (24/505). Residual stones were detected by computed tomography (12/24) or magnetic resonance cholangiopancreatography (12/24). In univariate analyses, a large number of stones (P = 0.01), long procedure time (P = 0.005), and performance of the pancreatic duct guidewire placement method (P-GW) for selective bile duct cannulation (P = 0.01) were the factors involved in residual stones. In multiple logistic regression analysis, performing P-GW was retained as the only independent factor of residual stones (adjusted odds ratio, 3.44; 95% CI, 1.19–9.88; P = 0.02). Conclusions When removing bile duct stones with a pancreatic guidewire in place, paying attention to residual stones is necessary.
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Affiliation(s)
- Akashi Fujita
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Kazunari Nakahara
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan.
| | - Yosuke Michikawa
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Ryo Morita
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Keigo Suetani
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Junya Sato
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Yosuke Igarashi
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Ryuichiro Araki
- Community Health Science Center, Saitama Medical University, Saitama, Japan
| | - Hiroki Ikeda
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Kotaro Matsunaga
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Tsunamasa Watanabe
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Fumio Itoh
- Department of Gastroenterology and Hepatology, St. Marianna University, School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
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