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Kutsuna S, Onozuka D, Asano K, Matsunami K, Matsuoka T. Cross-sectional surveillance study of long COVID in Toyonaka city, Osaka prefecture, Japan. J Infect Chemother 2024; 30:511-515. [PMID: 38103867 DOI: 10.1016/j.jiac.2023.12.006] [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: 09/04/2023] [Revised: 10/11/2023] [Accepted: 12/10/2023] [Indexed: 12/19/2023]
Abstract
BACKGROUND As the COVID-19 epidemic continues, concerns about long-term health impacts, specifically long COVID, persist. While the prevalence and symptomatology of long COVID have been explored in various global contexts, large-scale cohort studies in Japan remain limited, especially after the advent of the Omicron variant. METHODS In this observational study, 4,047 residents with a history of COVID-19 living in Toyonaka City, Osaka Prefecture, were assessed for long COVID symptoms using the VOICE mobile application and a paper survey. Respondents provided demographic and health information, as well as information regarding COVID-19 infection and subsequent symptoms. A Cox proportional hazard regression model was used to estimate the multivariable-adjusted hazard ratios and 95 % confidence intervals for overall morbidity of long COVID symptoms. RESULTS The survey found that 5.2 % of participants reported the persistence of one or more symptoms at 30 days post-onset. Fatigue was the most commonly reported symptom (1.75 %), followed by hair loss (1.41 %), and cough (1.28 %). Factors associated with an increased risk of experiencing long COVID symptoms included BMI, severe illness during the acute phase, and infection with certain COVID-19 variant strains, including Alpha, Delta, and Omicron. However, the incidence rate of long COVID appears to be decreasing with the dominance of the Omicron variant. CONCLUSIONS This large-scale study from Toyonaka City suggests a 5.2 % prevalence rate for persistent COVID-19 symptoms 4 weeks post-infection, potentially indicating a lower prevalence of long COVID in Japanese populations after the rise of the Omicron variant.
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Affiliation(s)
- Satoshi Kutsuna
- Department of Infection Control and Prevention, Graduate School of Medicine, Faculty of Medicine, Osaka University, Osaka, Japan.
| | - Daisuke Onozuka
- Department of Oral Microbe Control, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Kento Asano
- Academic Clinical Research Center, Department of Medical Innovation, Osaka University Hospital, Osaka, Japan
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Matsuoka T, Yoshida H, Kasai T, Tozawa T, Iehara T, Chiyonobu T. α-Synuclein pathology in Drosophila melanogaster is exacerbated by haploinsufficiency of Rop: connecting STXBP1 encephalopathy with α-synucleinopathies. Hum Mol Genet 2024:ddae073. [PMID: 38692286 DOI: 10.1093/hmg/ddae073] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/21/2024] [Accepted: 04/19/2024] [Indexed: 05/03/2024] Open
Abstract
Syntaxin-binding protein 1 (STXBP1) is a presynaptic protein that plays important roles in synaptic vesicle docking and fusion. STXBP1 haploinsufficiency causes STXBP1 encephalopathy (STXBP1-E), which encompasses neurological disturbances including epilepsy, neurodevelopmental disorders, and movement disorders. Most patients with STXBP1-E present with regression and movement disorders in adulthood, highlighting the importance of a deeper understanding of the neurodegenerative aspects of STXBP1-E. An in vitro study proposed an interesting new role of STXBP1 as a molecular chaperone for α-Synuclein (αSyn), a key molecule in the pathogenesis of neurodegenerative disorders. However, no studies have shown αSyn pathology in model organisms or patients with STXBP1-E. In this study, we used Drosophila models to examine the effects of STXBP1 haploinsufficiency on αSyn-induced neurotoxicity in vivo. We demonstrated that haploinsufficiency of Ras opposite (Rop), the Drosophila ortholog of STXBP1, exacerbates compound eye degeneration, locomotor dysfunction, and dopaminergic neurodegeneration in αSyn-expressing flies. This phenotypic aggravation was associated with a significant increase in detergent-insoluble αSyn levels in the head. Furthermore, we tested whether trehalose, which has neuroprotective effects in various models of neurodegenerative disorders, mitigates αSyn-induced neurotoxicity exacerbated by Rop haploinsufficiency. In flies expressing αSyn and carrying a heterozygous Rop null variant, trehalose supplementation effectively alleviates neuronal phenotypes, accompanied by a decrease in detergent-insoluble αSyn in the head. In conclusion, this study revealed that Rop haploinsufficiency exacerbates αSyn-induced neurotoxicity by altering the αSyn aggregation propensity. This study not only contributes to understanding the mechanisms of neurodegeneration in STXBP1-E patients, but also provides new insights into the pathogenesis of α-synucleinopathies.
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Affiliation(s)
- Taro Matsuoka
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Hideki Yoshida
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Takashi Kasai
- Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Takenori Tozawa
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tomoko Iehara
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tomohiro Chiyonobu
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
- Department of Molecular Diagnostics and Therapeutics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
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Otsugu M, Mikasa Y, Kadono M, Matsuoka T, Matsunami K, Nakamura M, Ohno Y, Kato T, Nakano K. The number of erupted teeth as a risk factor for dental caries in eighteen-month-old children: a cross‑sectional study. BMC Oral Health 2023; 23:671. [PMID: 37716972 PMCID: PMC10505305 DOI: 10.1186/s12903-023-03394-0] [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: 05/26/2023] [Accepted: 09/08/2023] [Indexed: 09/18/2023] Open
Abstract
BACKGROUND Dental caries is one of the most common chronic diseases worldwide, affecting lifelong as well as children. Therefore, it is important to clarify factors related to early childhood caries (ECC) in a younger population in terms of caries prevention. However, the prevalence of ECC is low in developed countries in the twenty-first century and a large-scale survey is needed to clarify the risk factors. Furthermore, earlier tooth eruption is not taken into consideration in most studies of ECC, even though it may be a factor of ECC. The present study investigated the prevalence and risk factors of dental caries in children aged 18 months in a core city of Japan. METHODS Findings from a total of 7351 children aged 18 months were analyzed. Anthropometric measurements of height and weight, as well as an oral examination and a microbiological caries-risk test, were performed. Additionally, a structured interview sheet was provided to the parents or guardians. Findings of dental caries at 18 months of age were evaluated using a logistic regression model. RESULTS Of the enrolled children, 1.2% had experienced dental caries. Multivariable logistic regression analysis results indicated a significant association with dental caries at 18 months of age for the following factors: second child (OR = 1.78; 95% CI:1.08-2.93, P < 0.05), third and later child (OR = 2.08; 95% CI:1.12-3.89, P < 0.05), 12 or fewer erupted teeth (OR = 0.47; 95% CI:0.24-0.96, P < 0.05), 17 or more erupted teeth (OR = 4.37; 95% CI:1.63-11.7, P < 0.01), Cariostat score (+ + +) (OR = 3.99; 95% CI:1.29-12.31, P < 0.05), daily eating before bed (OR = 2.62; 95% CI: 1.55-4.45, P < 0.001), three or more snacks per day (OR = 2.03; 95% CI:1.15-3.58, P < 0.05), and breastfeeding (OR = 3.30; 95% CI:2.00-5.44, P < 0.001). CONCLUSIONS These results suggest that the number of erupted teeth, as well as birth order, eating habits, and breastfeeding, are significant factors in dental caries occurrence at 18 months of age.
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Affiliation(s)
- Masatoshi Otsugu
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Yusuke Mikasa
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Maika Kadono
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | | | | | | | - Yuko Ohno
- Department of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takafumi Kato
- Department of Oral Physiology, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
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Hartley NJ, Grenzer J, Huang L, Inubushi Y, Kamimura N, Katagiri K, Kodama R, Kon A, Lu W, Makita M, Matsuoka T, Nakajima S, Ozaki N, Pikuz T, Rode A, Sagae D, Schuster AK, Tono K, Voigt K, Vorberger J, Yabuuchi T, McBride EE, Kraus D. Erratum: Using Diffuse Scattering to Observe X-Ray-Driven Nonthermal Melting [Phys. Rev. Lett. 126, 015703 (2021)]. Phys Rev Lett 2022; 128:169901. [PMID: 35522523 DOI: 10.1103/physrevlett.128.169901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Indexed: 06/14/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.126.015703.
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Miyoshi A, Ueda Y, Yagi A, Kimura T, Kobayashi E, Tasaka K, Todo A, Matsunami K, Matsuoka T, Kimura T. Challenge to improve Japan's deplorable HPV vaccination rate by local government actions. J Obstet Gynaecol Res 2022; 48:1233-1239. [PMID: 35274421 DOI: 10.1111/jog.15202] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 11/11/2021] [Revised: 02/06/2022] [Accepted: 02/10/2022] [Indexed: 11/29/2022]
Abstract
AIM In Japan, in 2013, following reports of several alleged adverse reactions in young girls following vaccination, the previously successful national human papillomavirus infection (HPV) vaccination program collapsed rapidly. In the 8 years since vaccination rates have hovered near zero. In October of 2020, in an attempt to mitigate this lingering disaster, the Japanese Ministry of Health, Labor, and Welfare (MHLW) agency finally revised its HPV vaccination informational leaflet that was designed to be distributed by local governments nationwide. Prior to this revision, Toyonaka City, in Japan's Osaka province, had already begun sending out their own unique leaflet to girls in the targeted 6th-10th grades. As a preview of how MHLW's revised leaflet might eventually succeed, we have studied the HPV vaccination results from Toyonaka City's experiment. METHOD This study was a population-based analysis that compared the monthly rates of new vaccinations in girls of a targeted grade school age group. We looked at rates before and after the leaflets were sent by Toyonaka City's Division of Health Promotion and Senior Services. RESULTS The vaccination rates between April 2020 and March 2021 were improved across all grades; 1.2% in 6th grade (p = 0.000185), 2.5% in 7th grade (p < 0.0001), 3.5% in 8th grade (p < 0.0001), 6.8% in 9th grade (p < 0.0001), and a remarkable 16.5% in 10th grade (p < 0.0001). CONCLUSION When a local government sends an HPV informational leaflet targeted at young girls, it can significantly improve their HPV vaccination rates.
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Affiliation(s)
- Ai Miyoshi
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yutaka Ueda
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Asami Yagi
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Toshihiro Kimura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Eiji Kobayashi
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | | | - Aiko Todo
- Toyonaka City Public Health Center, Osaka, Japan
| | | | | | - Tadashi Kimura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
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Okamoto K, Osone S, Matsuura A, Asazuma M, Matsuoka T, Kanayama T, Imamura T, Hosoi H. [HLA-mismatched bone marrow transplantation with post-transplant cyclophosphamide for pediatric patients with aplastic anemia]. Rinsho Ketsueki 2022; 63:45-50. [PMID: 35135951 DOI: 10.11406/rinketsu.63.45] [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: 06/14/2023]
Abstract
Post-transplant cyclophosphamide (PTCy) has improved the efficacy of HLA-mismatched hematopoietic cell transplantation (HCT) by decreasing the risk of graft-versus-host disease (GVHD) and nonrelapse mortality. If an HLA-matched donor is not available, GVHD prophylaxis with PTCy can also be used for HLA-mismatched HCT in patients with pediatric aplastic anemia (AA). We report two cases of pediatric AA that were treated with HLA-mismatched HCT with reduced-intensity conditioning and PTCy. We administered 50 mg/kg/day Cy for GVHD prophylaxis on days 3 and 4, and tacrolimus and mycophenolate mofetil (or methotrexate) were initiated from day 5. In both the cases, the time to engraftment was favorable and GVHD and infection were controllable. PTCy probably allows us to expand donor candidates in pediatric AA when an HLA-matched donor is not available; however, further studies regarding optimal conditioning regimens and late complications are required.
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Affiliation(s)
- Kenji Okamoto
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Shinya Osone
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Amane Matsuura
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Masamichi Asazuma
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Taro Matsuoka
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Takuyo Kanayama
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center
| | - Toshihiko Imamura
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
| | - Hajime Hosoi
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
- Department of Nursing, Doshisha Women's College of Liberal Arts
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7
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Debessai M, Matsuoka T, Hamlin JJ, Schilling JS, Shimizu K. Retraction: Pressure-Induced Superconducting State of Europium Metal at Low Temperatures [Phys. Rev. Lett. 102, 197002 (2009)]. Phys Rev Lett 2021; 127:269902. [PMID: 35029505 DOI: 10.1103/physrevlett.127.269902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Indexed: 06/14/2023]
Abstract
Retraction of DOI: 10.1103/PhysRevLett.102.197002.
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8
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Stranzl T, Bernstein D, Matsuoka T, Maekawa Y, Sejer Andersen P, Nolte J, Hulstrøm V, Nolte H. P031 SIMILARITIES IN EFFICACY AND SAFETY OF SUBLINGUAL IMMUNOTHERAPY TABLETS ACROSS GEOGRAPHIC REGIONS IN CLINICAL TRIALS. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.076] [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: 11/28/2022]
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9
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Hartley NJ, Grenzer J, Huang L, Inubushi Y, Kamimura N, Katagiri K, Kodama R, Kon A, Lu W, Makita M, Matsuoka T, Nakajima S, Ozaki N, Pikuz T, Rode AV, Sagae D, Schuster AK, Tono K, Voigt K, Vorberger J, Yabuuchi T, McBride EE, Kraus D. Using Diffuse Scattering to Observe X-Ray-Driven Nonthermal Melting. Phys Rev Lett 2021; 126:015703. [PMID: 33480771 DOI: 10.1103/physrevlett.126.015703] [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] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/09/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
We present results from the SPring-8 Angstrom Compact free electron LAser facility, where we used a high intensity (∼10^{20} W/cm^{2}) x-ray pump x-ray probe scheme to observe changes in the ionic structure of silicon induced by x-ray heating of the electrons. By avoiding Laue spots in the scattering signal from a single crystalline sample, we observe a rapid rise in diffuse scattering and a transition to a disordered, liquidlike state with a structure significantly different from liquid silicon. The disordering occurs within 100 fs of irradiation, a timescale that agrees well with first principles simulations, and is faster than that predicted by purely inertial behavior, suggesting that both the phase change and disordered state reached are dominated by Coulomb forces. This method is capable of observing liquid scattering without masking signal from the ambient solid, allowing the liquid structure to be measured throughout and beyond the phase change.
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Affiliation(s)
- N J Hartley
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - J Grenzer
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - L Huang
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Y Inubushi
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - N Kamimura
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0087, Japan
| | - K Katagiri
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0087, Japan
| | - R Kodama
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0087, Japan
- Photon Pioneers Center, Osaka University, Suita, Osaka 565-0087, Japan
| | - A Kon
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - W Lu
- European XFEL GmbH, Holzkoppel 4, D-22869 Schenefeld, Germany
| | - M Makita
- European XFEL GmbH, Holzkoppel 4, D-22869 Schenefeld, Germany
| | - T Matsuoka
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0087, Japan
| | - S Nakajima
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0087, Japan
| | - N Ozaki
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0087, Japan
- Photon Pioneers Center, Osaka University, Suita, Osaka 565-0087, Japan
| | - T Pikuz
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0087, Japan
| | - A V Rode
- Laser Physics Centre, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia
| | - D Sagae
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0087, Japan
| | - A K Schuster
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - K Tono
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - K Voigt
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - J Vorberger
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - T Yabuuchi
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - E E McBride
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - D Kraus
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
- Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Germany
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Saito Y, Mori N, Saito K, Matsuoka T, Tateishi K, Kitahara H, Fujimoto Y, Kobayashi Y. Greater coronary lipid core plaque assessed by near-infrared spectroscopy intravascular ultrasound in patients with elevated xanthine oxidoreductase: a mechanistic insight. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1297] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Elevated serum uric acid level was reportedly associated with greater coronary lipid plaque. Xanthine oxidoreductase (XOR) is a rate-limiting enzyme in purine metabolism and believed to play important roles in coronary atherosclerosis. However, the relation of XOR to coronary lipid plaque and its mechanism are unclear.
Purpose
The aim of this study was to assess the impact of XOR on coronary lipid plaque and the associated factors with XOR in coronary artery disease (CAD).
Methods
Patients with stable CAD undergoing elective percutaneous coronary intervention under near-infrared spectroscopy intravascular ultrasound (NIRS-IVUS) guidance were prospectively enrolled. They were divided into three groups according to serum XOR activities; low, normal, and high. Coronary lipid core plaques in non-target vessels were evaluated by NIRS-IVUS with lipid core burden index (LCBI) and a maximum LCBI in 4 mm (maxLCBI4mm). Systemic endothelial function and inflammation were assessed with reactive hyperemia index (RHI) and high-sensitivity C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio.
Results
Of 68 patients, 26, 31, and 11 were classified as low, normal, and high XOR activity groups. LCBI (474.4±171.6 vs. 347.4±181.6 vs. 294.0±155.9, p=0.04) and maxLCBI4mm (102.1±56.5 vs. 65.6±48.5 vs. 55.6±37.8, p=0.04) were significantly higher in high XOR group than in normal and low XOR groups. Although RHI was significantly correlated with body mass index, diabetes, current smoking, and high-density lipoprotein cholesterol, no relation was found between XOR activity and RHI (Figure). There were also no relations between XOR activity and high-sensitivity C-reactive protein, neutrophil-to-lymphocyte ratio, or platelet-to-lymphocyte ratio (Figure).
Conclusion
Elevated XOR activity was associated with greater coronary lipid plaque in patients with stable CAD, without significant relations to systemic endothelial function and inflammation.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Saito
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - N Mori
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - K Saito
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - T Matsuoka
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - K Tateishi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - H Kitahara
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - Y Fujimoto
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Department of Cardiovascular Medicine, Chiba, Japan
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Hasegawa H, Kono T, Sakane K, Matsuoka T, Soyama A, Murakami S, Hoshiga M. Increased oxygen uptake and utilization in the peripheral muscles, rather than cardiac function reserve, may be determinants of increased peak VO2 by cardiac rehabilitation in heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1069] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Peak oxygen consumption (peak VO2) is a major prognostic parameter in heart failure (HF). Previous studies have shown a relationship between peak VO2 and impaired oxygen uptake and utilization in the peripheral muscles. The purpose of this study was to clarify the determinant of increased peak VO2 by cardiac rehabilitation (CR) in patients with HF.
Methods
We performed echocardiography during upright ramp bicycle cardiopulmonary exercise test in 30 HF patients (61±1 years of age, 80% male) before and 6 months after CR. HR reserve was determined as the change in HR from rest to peak exercise, expressed as a percentage of the predicted maximal HR reserve. Elastance index (EAI) and LV end-systolic elastance index (ELVI) were derived as the ratio of end-systolic pressure to stroke volume index and end-systolic volume index, respectively. End-systolic pressure was estimated from the equation 0.9 × brachial systolic blood pressure. Ventriculo-arterial coupling (VAC) was calculated as the quotient of EAI and ELVI. The ratio of LDEDVI to E/e' mean was used to evaluate LV diastolic compliance. Systemic vascular resistance index was calculated as mean arterial pressure divided by echocardiography calculated cardiac index and multiplied by 80. The arterial venous oxygen content difference (C (A-V) O2 gradient) was calculated by using the Fick equation as: VO2/echocardiography calculated cardiac output.
Results
Peak VO2 and C (A-V) O2 gradient were increased by CR. However, heart rate reserve, systolic reserve, VAC, diastolic reserve and vasodilation reserve were unchanged by CR (Table 1).
Conclusions
Increased oxygen uptake and utilization in the peripheral muscles, rather than cardiac function reserve, may be determinants of increased peak VO2 by CR in HF.
Table 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - T Kono
- Soseikai General Hospital, Cardiology, Kyoto, Japan
| | - K Sakane
- Osaka Medical College, Takatsuki, Japan
| | - T Matsuoka
- Soseikai General Hospital, Cardiology, Kyoto, Japan
| | - A Soyama
- Soseikai General Hospital, Cardiology, Kyoto, Japan
| | - S Murakami
- Soseikai General Hospital, Cardiology, Kyoto, Japan
| | - M Hoshiga
- Osaka Medical College, Takatsuki, Japan
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Suresh Kumar V, Ji SY, Zhang YT, Shojiki K, Choi JH, Kimura T, Hanada T, Katayama R, Matsuoka T. Dependence of the V/III Ratio on Indium Incorporation in InGaN Films Grown by Metalorganic Vapour Phase Epitaxy. J Nanosci Nanotechnol 2020; 20:2979-2986. [PMID: 31635636 DOI: 10.1166/jnn.2020.17466] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
InGaN epitaxial layers were grown on c-plane sapphire substrates using the metalorganic vapour phase epitaxy (MOVPE) system at 760 °C. By varying the total flow rate of group-III sources (TMI+TEG) with a fixed molar ratio of group-III sources [TMI/(TMI+TEG)], the influence of V/III ratio were investigated from 4500 to 20000. The grown N-polar InGaN layers were investigated by atomic force microscopy and it is found that the surface roughness decreases with increasing the V/III ratios. High resolution X-ray diffraction analyses show that the phase separation decreases with increasing the V/III ratios. Photoluminescence measurements reveal that the peak position of the band-edge emission shifted toward the shorter wavelength with increasing the V/III ratios. Reciprocal space mapping (RSM) analyses were carried out on InGaN films. At low V/III ratio, the phase separation can be detected in InGaN films.
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Affiliation(s)
- V Suresh Kumar
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - S Y Ji
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Y T Zhang
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - K Shojiki
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - J H Choi
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - T Kimura
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - T Hanada
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - R Katayama
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - T Matsuoka
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
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13
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Takahashi S, Megumi Y, Sakata Y, Ikezawa H, Matsuoka T, Kawai A. One-year follow-up results of eribulin for soft-tissue sarcoma including rare subtypes in a real-world observational study in Japan. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz283.016] [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: 11/12/2022] Open
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14
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Yamada T, Yoshida Y, Satoh A, Aisu N, Matsuoka T, Koganemaru T, Kajitani R, Munechika T, Matsumoto Y, Nagano H, Komono A, Sakamoto R, Morimoto M, Arima H, Hasegawa S. The validity of evaluations for chemotherapy-induced peripheral neuropathy (CIPN). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz265.049] [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: 11/14/2022] Open
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15
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Mabey P, Albertazzi B, Michel T, Rigon G, Makarov S, Ozaki N, Matsuoka T, Pikuz S, Pikuz T, Koenig M. Characterization of high spatial resolution lithium fluoride X-ray detectors. Rev Sci Instrum 2019; 90:063702. [PMID: 31255030 DOI: 10.1063/1.5092265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 05/21/2019] [Indexed: 06/09/2023]
Abstract
The response of lithium fluoride (LiF) crystal detectors to monochromatic X-rays is measured in the multi-kilo-electron-volt range. This response, as a function of the X-ray dose, is independent of photon energy with no saturation level found. The response, as a function of the incident energy flux, is found to increase for photons of lower energy due to the differing attenuation lengths of X-ray photons within the crystal. Small differences are seen between different confocal microscopes used to scan the data, suggesting the need for absolute calibration. The spatial resolution of the LiF is also measured (1.19-1.36 μm) and is found to be independent of incident photon energy. Finally, a photometric study is performed in order to assess the feasibility of using these detectors at current X-ray free electron laser and laser facilities worldwide.
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Affiliation(s)
- P Mabey
- LULI-CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau Cedex, France
| | - B Albertazzi
- LULI-CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau Cedex, France
| | - Th Michel
- LULI-CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau Cedex, France
| | - G Rigon
- LULI-CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau Cedex, France
| | - S Makarov
- Joint Institute for High Temperature RAS, Moscow 125412, Russia
| | - N Ozaki
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - T Matsuoka
- Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka 565-0871, Japan
| | - S Pikuz
- Joint Institute for High Temperature RAS, Moscow 125412, Russia
| | - T Pikuz
- Joint Institute for High Temperature RAS, Moscow 125412, Russia
| | - M Koenig
- LULI-CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau Cedex, France
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16
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Matsuoka T, Fujihisa H, Hirao N, Ohishi Y, Mitsui T, Masuda R, Seto M, Yoda Y, Shimizu K, Machida A, Aoki K. Erratum: Structural and Valence Changes of Europium Hydride Induced by Application of High-Pressure H_{2} [Phys. Rev. Lett. 107, 025501 (2011)]. Phys Rev Lett 2019; 122:179901. [PMID: 31107077 DOI: 10.1103/physrevlett.122.179901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Indexed: 06/09/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.107.025501.
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17
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Jiang Y, Iwata S, Yang C, Shirakawa K, Matsuoka T. Cartilage regeneration by autologous adipose-derived mesenchymal stem cells for the treatment of osteoarthritis. Cytotherapy 2019. [DOI: 10.1016/j.jcyt.2019.03.501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Ueno D, Matsuoka T, Kato Y, Ayani N, Yoneda S, Matsuda M, Narumoto J. Pilot study of correlations among interoception, cognition, and depressive symptoms in the elderly. Int J Psychophysiol 2018. [DOI: 10.1016/j.ijpsycho.2018.07.407] [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: 11/29/2022]
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19
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Hirono K, Hata Y, Nakazawa M, Momoi N, Tsuji T, Matsuoka T, Ayusawa M, Abe Y, Hayashi T, Tsujii N, Abe T, Sakaguchi H, Wang C, Takasaki A, Takarada S, Okabe M, Miyao N, Nakaoka H, Ibuki K, Saito K, Ozawa S, Nishida N, Bowles NE, Ichida F. Clinical and Echocardiographic Impact of Tafazzin Variants on Dilated Cardiomyopathy Phenotype in Left Ventricular Non-Compaction Patients in Early Infancy. Circ J 2018; 82:2609-2618. [DOI: 10.1253/circj.cj-18-0470] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Keiichi Hirono
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Yukiko Hata
- Legal Medicine, Graduate School of Medicine, University of Toyama
| | - Makoto Nakazawa
- Department of Pediatric and Lifelong Congenital Cardiology Institute, Southern Tohoku Research Institute for Neuroscience, Southern Tohoku General Hospital
| | - Nobuo Momoi
- Department of Pediatrics, Fukushima Medical University
| | - Tohru Tsuji
- Department of Pediatrics, Fukushima Medical University
| | - Taro Matsuoka
- Department of Pediatrics, Toyonaka Municipal Hospital
| | - Mamoru Ayusawa
- Department of Pediatrics and Child Health, Nihon University School of Medicine
| | - Yuriko Abe
- Department of Pediatrics and Child Health, Nihon University School of Medicine
| | | | | | - Tadaaki Abe
- Department of Pediatrics, Niigata City General Hospital
| | - Heima Sakaguchi
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center
| | - Ce Wang
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Asami Takasaki
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Shinya Takarada
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Mako Okabe
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Nariaki Miyao
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Hideyuki Nakaoka
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Keijiro Ibuki
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Kazuyoshi Saito
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Sayaka Ozawa
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Naoki Nishida
- Legal Medicine, Graduate School of Medicine, University of Toyama
| | - Neil E. Bowles
- Department of Occupational and Environmental Health and Safety, University of Utah
| | - Fukiko Ichida
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
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20
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Abstract
SummaryThe shortening of the one-stage prothrombin time of plasma brought about by increased foreign surface contact is dependent upon “activation” of factor VII. This activation of VII is the result of a series of activations involving factors XII, IX and probably XI as well. In this it is similar to the activation of factor VIII. Although the prothrombin time in an individual with hemophilia B or the Hageman trait is ‘‘normal”, no shortening occurs after increased foreign surface contact. Factor VII deficient plasma with normal levels of factors XII and IX is “activated” by “contact” in proportion to the level of VII present. No increase in activity of factors II, V, or X was observed after increased foreign surface contact.
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Abstract
Human peritoneal mesothelial cells (HPMCs) play an important role in peritoneal functions. During long term peritoneal dialysis, it has been reported that HPMCs are damaged by high glucose solution via the signal of transforming growth factor (TGF)- ß1 produced by HPMCs. In this study, we focused on the effect of hepatocyte growth factor (HGF), known as an anti-fibrotic and anti-TGF-ß1 agent, on HPMCs damaged by high glucose solution. HPMCs were isolated from specimens of the omentum from nonuremic patients after informed consent had been obtained. After confirming adhesion for 6 hours, 100 μL of DMEM with 0.5%FCS were added at different concentrations (D-glucose; 6, 30mM) with or without HGF (10, 30, 100 ng/mL) for 48 hours. We examined the effects of a high concentration of glucose and then focused on following four critical points: 1) the production of HGF from HPMCs exposed to a high concentration of glucose, 2) the expression of c-Met on HPMCs, 3) the viability of those cells, and 4) matrix metalloproteinase-2 (MMP-2) and tissue inhibitors of metalloproteinase-2 (TIMP-2). The following significant changes are described herein: high glucose solution and TGF-ß1 i) decreased HGF production from HPMCs and ii) up-regulated expression of c-Met on HPMCs, and addition of HGF iii) restored viability of HPMCs damaged by glucose, iv) suppressed TGF-ß1 production by HGF, and v) induced up-regulation of MMP-2 and decreased TIMP-2 production by HPMCs. Levels of HGF decreased by high concentrations of glucose in the peritoneal cavity may induce the loss of HPMCs and thereby result in peritoneal fibrosis. These results suggest that HGF is an effective agent in the regeneration of peritoneal membrane damaged by high glucose solution.
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Affiliation(s)
- Y Naiki
- Department of Internal Medicine, Division of Hematology, Nephrology and Rheumatology, Kinki University School of Medicine, 377-2, Ohno-Hogashi, Osaka-Sayama, Osaka 589 8511, Japan
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22
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Shirakawa K, Izawa H, Sotozaki N, Matsuoka T. The relation with a sleep gene and the life gene. On genetic interaction by the systems biological analysis. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.897] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Izawa H, Shirakawa K, Sotozaki N, Matsuoka T. Examination of the method that is most suitable for the influence on sleep in the transplant of the mesenchyma system stem cell and cognitive function and QOL evaluation. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.421] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Yamamoto N, Asada R, Kawahara R, Hagiya H, Akeda Y, Shanmugakani R, Yoshida H, Yukawa S, Yamamoto K, Takayama Y, Ohnishi H, Taniguchi T, Matsuoka T, Matsunami K, Nishi I, Kase T, Hamada S, Tomono K. Prevalence of, and risk factors for, carriage of carbapenem-resistant Enterobacteriaceae among hospitalized patients in Japan. J Hosp Infect 2017; 97:212-217. [DOI: 10.1016/j.jhin.2017.07.015] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 07/15/2017] [Indexed: 01/22/2023]
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25
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Wakejima R, Yamada T, Kumata S, Shinohara S, Watanabe R, Matsuoka T, Nagai S, Matsuoka K, Ueda M, Miyamoto Y. P-221RIGHT MIDDLE LOBE ATELECTASIS FOLLOWING COMPLETE VIDEO-ASSISTED THORACOSCOPIC RIGHT UPPER LOBECTOMY. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.221] [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: 11/14/2022] Open
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26
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Shinohara S, Yamada T, Kumata S, Wakejima R, Watanabe R, Matsuoka T, Nagai S, Matsuoka K, Ueda M, Miyamoto Y. P-192IMPACT OF PULMONARY VEIN ORIFICE SIZE ON ARTERIAL THROMBOEMBOLISM FOLLOWING LEFT UPPER LOBECTOMY. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.192] [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: 11/13/2022] Open
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27
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Sakata Y, Iwata H, Ikezawa H, Fudetani R, Tonoda D, Uchida Y, Hasegawa H, Matsuoka T. Prospective observational study of peripheral neuropathy in breast cancer patients treated with eribulin. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx365.055] [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: 11/13/2022] Open
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28
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Shinohara S, Tanikawa T, Hada T, Funaki I, Nishida H, Matsuoka T, Otsuka F, Shamrai KP, Rudenko TS, Nakamura T, Mishio A, Ishii H, Teshigahara N, Fujitsuka H, Waseda S. High-Density Helicon Plasma Sources: Basics and Application to Electrodeless Electric Propulsion. Fusion Science and Technology 2017. [DOI: 10.13182/fst13-a16896] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Shinohara
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - T. Tanikawa
- Tokai University, 4-1-1, Kita-kaname, Hiratsuka, Kanagawa 259-1292, Japan
| | - T. Hada
- Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - I. Funaki
- Institute of Space and Astronautical Science, 3-1-1, Yoshinodai, Sagamihara, Kanagawa 252-5210, Japan
| | - H. Nishida
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - T. Matsuoka
- Institute of Space and Astronautical Science, 3-1-1, Yoshinodai, Sagamihara, Kanagawa 252-5210, Japan
| | - F. Otsuka
- Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - K. P. Shamrai
- Institute of Nuclear Research, 47 Prospect Nauki, Kiev 03680, Ukraine
| | - T. S. Rudenko
- Institute of Nuclear Research, 47 Prospect Nauki, Kiev 03680, Ukraine
| | - T. Nakamura
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - A. Mishio
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - H. Ishii
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - N. Teshigahara
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - H. Fujitsuka
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - S. Waseda
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
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29
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Matsuoka T, Suzuki M, Sano M, Hayashida K, Tamura T, Homma K, Fukuda K, Sasaki J. P1568Hydrogen gas inhalation improves survival in rats with lethal haemorrhagic shock. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1568] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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30
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Matsuoka T, Kato M, Shinoda Y, Ohashi K, Yoshida S, Mori T, Tachi T, Yoshimura T, Teramachi H. Evaluation of antimicrobial stewardship (AS) for appropriate use of antimicrobial agents. Pharmazie 2017; 72:296-299. [PMID: 29441876 DOI: 10.1691/ph.2017.6968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We implemented an antimicrobial stewardship (AS) program whereby pharmacists sought appropriate use of antimicrobial agents in January 2012. At that time, we targeted anti-methicillin-resistant Staphylococcus aureus (MRSA) agents and carbapenems; however, in January 2014, we added tazobactam/piperacillin (TAZ/PIPC). We evaluated outcomes using multilateral analyses. The average one-day dosage of carbapenems increased; however, the duration of administration and number of recipient patients decreased significantly (P < 0.01). Moreover, the percentage of patients receiving meropenem (MEPM), for whom the time above minimal inhibitory concentration (MIC) was 40% or higher increased (P < 0.01). In contrast, patient utilization of TAZ/PIPC increased significantly after targeting of carbapenems as specific antibacterial agents. However, after TAZ/PIPC was targeted as a specific antibacterial agent, the number of TAZ/PIPC administrations decreased significantly (P < 0.01). The duration of hospitalization and mortality rate in patients receiving specific antibacterial agents significantly decreased after implementation of the AS program (P < 0.01). In conclusion, pharmacist's interventions to provide AS and patient follow-up reduced improper use and promoted proper administration of antibacterial agents. Furthermore, AS was effective in improving patient prognoses and suppressing drug-resistant strains, as well as promoting effective treatment.
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31
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Matsuoka T, Tsujioka H, Matsuoka S, Sorano S, Toyama A, Mori H, Yamamoto H, Nakamura S, Fukami T, Goto M, Matsuoka R, Eguchi F. Retroperitoneal leiomyosarcoma: a case report. EUR J GYNAECOL ONCOL 2017; 38:150-152. [PMID: 29767887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Retroperitoneal leiomyosarcoma is a relatively rare and aggressive tumor. Because of its rarity, it is difficult to arrive at a definite diagnosis preoperatively and to design an effective strategy. Here the authors report a case of peritoneal leiomyosarcoma in which diagnosis was difficult because the clinical course resembled that of ovarian cancer. A 77-year-old woman diagnosed with ovarian cancer underwent laparotomy. The excised tumor contained a necrotic polypoid mass that histologically displayed the features of leiomyosarcoma. The patient received adjuvant chemotherapy with a combination of gemcitabine and docetaxel but died two months after surgery owing to the aggressive behavior of the tumor. Because the preoperative diagnosis in this case was ovarian cancer, arriving at a treatment strategy assuming peritoneal leiomyosarcoma was difficult. If complete surgical resection of tumor is not performed, as in the present case, the prognosis can be extremely poor.
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Ruiz-Lopez M, Faenov A, Pikuz T, Ozaki N, Mitrofanov A, Albertazzi B, Hartley N, Matsuoka T, Ochante Y, Tange Y, Yabuuchi T, Habara T, Tanaka KA, Inubushi Y, Yabashi M, Nishikino M, Kawachi T, Pikuz S, Ishikawa T, Kodama R, Bleiner D. Coherent X-ray beam metrology using 2D high-resolution Fresnel-diffraction analysis. J Synchrotron Radiat 2017; 24:196-204. [PMID: 28009559 DOI: 10.1107/s1600577516016568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/17/2016] [Indexed: 06/06/2023]
Abstract
Direct metrology of coherent short-wavelength beamlines is important for obtaining operational beam characteristics at the experimental site. However, since beam-time limitation imposes fast metrology procedures, a multi-parametric metrology from as low as a single shot is desirable. Here a two-dimensional (2D) procedure based on high-resolution Fresnel diffraction analysis is discussed and applied, which allowed an efficient and detailed beamline characterization at the SACLA XFEL. So far, the potential of Fresnel diffraction for beamline metrology has not been fully exploited because its high-frequency fringes could be only partly resolved with ordinary pixel-limited detectors. Using the high-spatial-frequency imaging capability of an irradiated LiF crystal, 2D information of the coherence degree, beam divergence and beam quality factor M2 were retrieved from simple diffraction patterns. The developed beam metrology was validated with a laboratory reference laser, and then successfully applied at a beamline facility, in agreement with the source specifications.
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Affiliation(s)
- M Ruiz-Lopez
- Empa, Materials Science and Technology, Dübendorf, Switzerland
| | - A Faenov
- Institute for Academic Initiatives, Osaka University, Suita, Osaka, Japan
| | - T Pikuz
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
| | - N Ozaki
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - A Mitrofanov
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
| | - B Albertazzi
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - N Hartley
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - T Matsuoka
- Institute for Academic Initiatives, Osaka University, Suita, Osaka, Japan
| | - Y Ochante
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - Y Tange
- JASRI/SPring-8, Sayo, Hyogo, Japan
| | - T Yabuuchi
- RIKEN Harima Institute, Sayo, Hyogo, Japan
| | - T Habara
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | - K A Tanaka
- Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
| | | | | | - M Nishikino
- Kansai Photon Research Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto, Japan
| | - T Kawachi
- Kansai Photon Research Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto, Japan
| | - S Pikuz
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
| | | | - R Kodama
- Institute for Academic Initiatives, Osaka University, Suita, Osaka, Japan
| | - D Bleiner
- Empa, Materials Science and Technology, Dübendorf, Switzerland
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33
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Arakane F, Tanaka Y, Murakami N, Matsuoka T, Idegami T, Yoshimatsu K, Sasaki R. Relations of Pelvic Endometriosis and Ileal Endometriosis: Report of Two Cases. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.626] [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]
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34
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Yamada T, Matsuoka K, Watanabe R, Kumata S, Ito A, Taira A, Sakane T, Matsuoka T, Nagai S, Ueda M, Miyamoto Y. P-211INTERVENTIONS FOR CHYLOTHORAX COMPLICATING THORACIC SURGERY. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.209] [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: 11/14/2022] Open
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Seko T, Usami E, Kimura M, Nakao T, Matsuoka T, Yoshimura T, Kanamori N, Tachi T, Teramachi H. A comparative analysis of micafungin and caspofungin for empirical antifungal therapy in antibiotic-unresponsive febrile patients with hematologic malignancies. Pharmazie 2016; 71:484-488. [PMID: 29442037 DOI: 10.1691/ph.2016.6612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study was retrospectively carried out to compare the efficacy of echinocandins such as micafungin (MCFG) and caspofungin (CPFG) in the treatment of antibiotic-unresponsive febrile patients with hematologic malignancies. A total of 163 patients received either MCFG or CPFG. We evaluated the efficacy of echinocandin against fever decline in all patients. Fever decline, defined as a body temperature of less than 37.5 °C sustained for more than 48 h without scheduled antipyretic medication. Efficacy assessments showed that the incidence of fever decline was not significantly different between the MCFG and CPFG groups (P=0.599). The median number of days from the start of echinocandin administration to fever decline was 5 in both the MCFG and CPFG groups. Multivariate analysis showed that the use of anti-MRSA drugs (HR, 0.64; 95%CI, 0.45-0.90; P=0.011) and a change from echinocandins to voriconazole or liposomal-amphotericin B (HR, 0.50; 95%CI, 0.30-0.74; P<0.001) are significant risk factors for sustained fever. A significant difference (P=0.002) in incidence of fever decline was however associated with differences in the timing of anti-MRSA drug administration. The median number of days from the start of echinocandin administration to fever decline was 5 when administration of the anti-MRSA drug occurred "simultaneously or prior to echinocandin start" and 11 in the "next day or later of echinocandin start" group. In other words, starting anti-MRSA drug treatment after echinocandin treatment is a risk factor. In conclusion, MCFG and CPFG have similar efficacy as empirical antifungal agents in the treatment of antibioticunresponsive febrile patients with hematopoietic malignancies.
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Muzembo BA, Akita T, Matsuoka T, Tanaka J. Systematic review and meta-analysis of hepatitis C virus infection in the Democratic Republic of Congo. Public Health 2016; 139:13-21. [PMID: 27450441 DOI: 10.1016/j.puhe.2016.06.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 01/21/2016] [Revised: 04/25/2016] [Accepted: 06/16/2016] [Indexed: 12/21/2022]
Abstract
OBJECTIVES Hepatitis C virus (HCV) infection is endemic in the Democratic Republic of the Congo (DRC), where the prevalence of HCV antibodies (anti-HCV) is reported to range from 0.2% to 13.7%. However, the reported prevalence rates have been inconsistent. Therefore, a meta-analysis of observational studies was conducted to provide updates on the prevalence of HCV infection in the DRC. STUDY DESIGN Systematic review and meta-analysis. METHODS Medline, EMBASE and Google Scholar were searched for publications reporting on HCV infection in the DRC up to autumn 2015. In addition, a manual search was undertaken to detect relevant papers. Studies performed in groups at low risk of HCV (blood donors and pregnant women) were used for the meta-analysis. The random effects model was used to estimate the pooled prevalence of anti-HCV. RESULTS Sixteen studies with 13,799 participants (aged 6 months-71 years) met the inclusion criteria. The studies were performed in blood donors, pregnant women, military personnel, individuals with human immunodeficiency virus, children, commercial sex workers, Congolese patients living in Canada, patients with sickle cell disease and hospitalized patients. The reviewed studies revealed the presence of anti-HCV in almost all studied age groups and did not differ between sexes. The pooled prevalence of anti-HCV was 2.9% [95% confidence interval 1.5-4.3%]. Subgroup analyses revealed that the prevalence rates of anti-HCV in blood donors and pregnant women were 2.7% (95% confidence interval: 1.1-4.4%) and 3.3% (1.4-5.1%), respectively. CONCLUSIONS HCV infection remains an issue of public concern in the DRC, demonstrating a need for adequate hepatitis control programmes. Efforts must be made to virtually eliminate transfusion-transmitted HCV throughout the country.
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Affiliation(s)
- B A Muzembo
- Department of Epidemiology, Infectious Disease Control and Prevention, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - T Akita
- Department of Epidemiology, Infectious Disease Control and Prevention, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - T Matsuoka
- Department of Epidemiology, Infectious Disease Control and Prevention, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - J Tanaka
- Department of Epidemiology, Infectious Disease Control and Prevention, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
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Mitani Y, Usami E, Kimura M, Nakao T, Okada K, Matsuoka T, Kokuryou T, Yoshimura T, Yamakawa M. Risk factors for neutropenia with lenalidomide plus dexamethasone therapy for multiple myeloma. Pharmazie 2016; 71:349-351. [PMID: 27455556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Neutropenia may develop as an adverse event in patients with multiple myeloma receiving lenalidomide (LEN) plus dexamethasone (DEX) therapy. In the present study, we examined the risk factors associated with grade 3/4 neutropenia during the first cycle of LEN plus DEX therapy. We observed that hemoglobin level (≤ 8.5 g/dl) was a significant risk factor for grade 3/4 neutropenia during the first cycle of therapy (odds ratio: 19.40; 95% confidence interval: 2.68-141.00; p < 0.01). thus, our findings suggest that determining the hemoglobin level could be useful in the risk management for neutropenia in patients receiving LEN plus DEX therapy.
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Shinoda Y, Matsuoka T, Mori T, Yoshida S, Ohashi K, Yoshimura T, Sugiyama T. Antibacterial therapy of aspiration pneumonia in patients with methicillin-resistant Staphylococcus aureus-positive sputum: identification of risk factors. Pharmazie 2016; 71:109-112. [PMID: 27004376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Inappropriate antimicrobial treatment could adversely affect the recovery of patients with aspiration pneumonia. We attempted to identify inappropriate antibacterial treatment and to determine the standard use of anti-methicillin-resistant Staphylococcus aureus (MRSA) drugs in aspiration pneumonia patients with MRSA-positive in sputum. Aspiration pneumonia patients with MRSA-positive sputum treated between January 2013 and May 2013 were included in this study to determine the risk factors for death during hospitalization. The relationship between anti-MRSA medicine use and death during hospitalization was also investigated. More than 10⁷ MRSA colony-forming units in sputum culture, creatinine clearance of less than 30 mL/min, and quinolone use were found to be risk factors for death during hospitalization. The death rate during hospitalization was significantly lower in cases a Geckler classification of 4 or 5 when anti-MRSA treatment was initiated soon after the culture was obtained. Therefore, we concluded that the use of quinolones as antibacterial treatment in aspiration pneumonia patients with MRSA-positive sputum should be avoided and that anti-MRSA treatment should be started in cases with good quality sputum cultures.
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Choi JH, Shojiki K, Tanikawa T, Hanada T, Katayama R, Matsuoka T. Effect of sapphire nitridation and group-III source flow rate ratio on In-incorporation into InGaN grown by metalorganic vapor phase epitaxy. J Nanosci Nanotechnol 2014; 14:6112-6115. [PMID: 25936067 DOI: 10.1166/jnn.2014.8306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In-composition of N-polar InGaN films on the sapphire substrate with the surface nitridation was investigated. By varying the ratio of the group-III source flow rate from 0.7 to 0.95, the In-composition and the surface morphologies of InGaN films were changed. The In-composition of N-polar InGaN films was affected by the strain relaxation and the surface morphologies.
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Abstract
The wurtzite structure In1−x−yGaxAlyN quaternary system is studied with respect to the unstable region in mixing. The composition in the unstable region is calculated from the free energy of mixing by using the strictly regular solution model. The interaction parameter used in this calculation is obtained by using the delta-lattice-parameter method. Here, the proportionality constant connecting the lattice constants and the band-gap energy is determined by fitting the calculation to the composition data obtained experimentally from InGaN grown by metallorganic vapor phase epitaxy. From this calculation, the ternary alloys of InAlN, InGaN and GaAlN are predicted to always, sometimes, and hardly ever, respectively, have an unstable mixing region. The essential mismatch in thermal equilibrium between the strictly regular solution approximation and the growth conditions in MOVPE is removed by using a fitting calculation and experimental data. Also, the mismatch between the zinc-blende structure and the wurtzite structure is corrected. As a result, this prediction of the phase separation in In1−x−yGaxAlyN becomes more reliable.
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Kimura T, Watanabe A, Matsuoka T. [Sedating antihistamines extend the duration of febrile convulsion]. No To Hattatsu 2014; 46:45-46. [PMID: 24620431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Kimizu T, Watanabe A, Matsuoka T. [Three cases of human herpesvirus-6 encephalopathy showing hyperperfusion in the acute phase on SPECT]. No To Hattatsu 2013; 45:309-313. [PMID: 23951944] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Brain hypoperfusion observed on single-photon emission computed tomography (SPECT) is a typical finding in the acute phase of human herpesvirus-6 (HHV-6) encephalopathy. However, from 2004 to 2010, we encountered three cases of HHV-6 encephalopathy in which hyperperfusion in the area of the brain lesion was observed on SPECT performed within 48 hours after disease onset. The hyperperfusion in the brain was followed by hypoperfusion in the recovery phase. These cases suggest that hyperperfusion may appear in damaged areas prior to the hypoperfusion that is normally associated with HHV-6 encephalopathy.
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Affiliation(s)
- Tomokazu Kimizu
- Department of Pediatrics, Toyonaka Municipal Hospital, Toyonaka, Osaka
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Ishii A, Yasumoto S, Ihara Y, Inoue T, Fujita T, Nakamura N, Ohfu M, Yamashita Y, Takatsuka H, Taga T, Miyata R, Ito M, Tsuchiya H, Matsuoka T, Kitao T, Murakami K, Lee WT, Kaneko S, Hirose S. Genetic analysis of PRRT2 for benign infantile epilepsy, infantile convulsions with choreoathetosis syndrome, and benign convulsions with mild gastroenteritis. Brain Dev 2013; 35:524-30. [PMID: 23073245 DOI: 10.1016/j.braindev.2012.09.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 09/05/2012] [Accepted: 09/11/2012] [Indexed: 11/18/2022]
Abstract
PURPOSE PRRT2 mutations were recently identified in benign familial infantile epilepsy (BFIE) and infantile convulsions with paroxysmal choreoathetosis (ICCA) but no abnormalities have so far been identified in their phenotypically similar seizure disorder of benign convulsions with mild gastroenteritis (CwG), while mutations in KCNQ2 and KCNQ3 have been recognized in benign familial neonatal epilepsy (BFNE). The aim of this study was to identify PRRT2 mutations in infantile convulsions in Asian families with BFIE and ICCA, CwG and BFNE. METHODS We recruited 26 unrelated Japanese affected with either BFIE or non-familial benign infantile seizures and their families, including three families with ICCA. A total of 17 Japanese and Taiwanese with CwG, 50 Japanese with BFNE and 96 healthy volunteers were also recruited. Mutations of PRRT2 were sought using direct sequencing. RESULTS Heterozygous truncation mutation (c.649dupC) was identified in 15 of 26 individuals with benign infantile epilepsy (52.1%). All three families of ICCA harbored the same mutation (100%). Another novel mutation (c.1012+2dupT) was found in the proband of a family with BFIE. However, no PRRT2 mutation was found in either CwG or BFNE. CONCLUSIONS The results confirm that c.649dupC, a truncating mutation of PRRT2, is a hotspot mutation resulting in BFIE or ICCA regardless of the ethnic background. In contrast, PRRT2 mutations do not seem to be associated with CwG or BFNE. Screening for PRRT2 mutation might be useful in early-stage differentiation of BFIE from CwG.
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Affiliation(s)
- Atsushi Ishii
- Department of Pediatrics, School of Medicine, Fukuoka University, Fukuoka, Japan
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Abstract
Abstract
Automotive side protection moldings, which consist of polymer and an inserted metal core, are produced by profile extrusion coating. The molding process is similar to wire coating process except using a cross-head profile die because the cross-sectional shape of the side protection molding is complex. The polymer is extruded from the profile die covering the metal core, which is fed to the die simultaneously. Then, there are two flow regions within the profile die. One is pressure flow region where the polymer is flowed by pressure gradient. Another is drag flow region including pressure flow. The drag flow appears in the area where the polymer contacts the moving metal core in the die. Finite element analysis was developed for simulating the combined pressure and drag flow in a complex profile die. The flow is assumed to be isothermal planner flow for a non-Newtonian fluid. Power law model is used to represent viscosity of the polymer. Distributions of pressure and velocity are simulated by the analysis. Polymer melt flow through a flow channel of a die for producing the side protection molding was analyzed to achieve uniform velocity at the outlet of the die. A suitable shape of the flow channel was designed by several iterative simulations.
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Affiliation(s)
- T. Matsuoka
- Toyota Central R&D Laboratories, Yokomichi, Japan
| | - H. Takahashi
- Toyota Central R&D Laboratories, Yokomichi, Japan
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Dollar F, Zulick C, Thomas AGR, Chvykov V, Davis J, Kalinchenko G, Matsuoka T, McGuffey C, Petrov GM, Willingale L, Yanovsky V, Maksimchuk A, Krushelnick K. Finite spot effects on radiation pressure acceleration from intense high-contrast laser interactions with thin targets. Phys Rev Lett 2012; 108:175005. [PMID: 22680876 DOI: 10.1103/physrevlett.108.175005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Indexed: 06/01/2023]
Abstract
Short pulse laser interactions at intensities of 2×10(21) W cm(-2) with ultrahigh contrast (10(-15)) on submicrometer silicon nitride foils were studied experimentally by using linear and circular polarizations at normal incidence. It was observed that, as the target decreases in thickness, electron heating by the laser begins to occur for circular polarization leading to target normal sheath acceleration of contaminant ions, while at thicker targets no acceleration or electron heating is observed. For linear polarization, all targets showed exponential energy spreads with similar electron temperatures. Particle-in-cell simulations demonstrate that the heating is due to the rapid deformation of the target that occurs early in the interaction. These experiments demonstrate that finite spot size effects can severely restrict the regime suitable for radiation pressure acceleration.
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Affiliation(s)
- F Dollar
- Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109-2099, USA
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Tse JS, Desgreniers S, Ohishi Y, Matsuoka T. Large amplitude fluxional behaviour of elemental calcium under high pressure. Sci Rep 2012; 2:372. [PMID: 22523635 PMCID: PMC3330680 DOI: 10.1038/srep00372] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Accepted: 03/19/2012] [Indexed: 11/30/2022] Open
Abstract
Experimental evidences are presented showing unusually large and highly anisotropic vibrations in the “simple cubic” (SC) unit cell adopted by calcium over a broad pressure ranging from 30–90 GPa and at temperature as low as 40 K. X-ray diffraction patterns show a preferential broadening of the (110) Bragg reflection indicating that the atomic displacements are not isotropic but restricted to the [110] plane. The unusual observation can be rationalized invoking a simple chemical perspective. As the result of pressure-induced s → d transition, Ca atoms situated in the octahedral environment of the simple cubic structure are subjected to Jahn-Teller distortions. First-principles molecular dynamics calculations confirm this suggestion and show that the distortion is of dynamical nature as the cubic unit cell undergoes large amplitude tetragonal fluctuations. The present results show that, even under extreme compression, the atomic configuration is highly fluxional as it constantly changes.
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Watanabe T, Sakakibara N, Sugimori H, Yabumoto T, Takeyama T, Takemura M, Seishima M, Matsuoka T. Effect of long-term physical exercise of peripheral nerve: comparison of nerve conduction study and ultrasonography. J Sports Med Phys Fitness 2012; 52:212-220. [PMID: 22525659] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
AIM The aim of this study was to assess the effects of long-term physical exercise on peripheral nerve using both nerve conduction study (NCS) and ultrasonography (US). METHODS The authors measured nerve conduction study and ultrasonography in 15 male (mean, 20±1.5 years) handball players and 13 male (mean, 21.3±1.9 years) control subjects. Cross-sectional area of the median nerve was evaluated using ultrasonography at the carpal tunnel and 6 cm proximal to the wrist, and the ulnar nerve at 6 cm proximal to the wrist crease, 2 cm proximal to the medial epicondyle, the epicondyle, and 2 cm distal to epicondyle. RESULTS US shows significantly increased cross-sectional area of both median and ulnar nerve in the players compared with that in the controls, and the latency times in both nerves were significantly delayed in the players compared with that in the controls. Cross-sectional area of the median nerve showed a significant correlation with latency (r=0.330, P<0.01). CONCLUSION This study suggests that the players have a tendency toward having both median and ulnar motor nerve damage in the wrist or elbow region although they are asymptomatic.
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Affiliation(s)
- T Watanabe
- Department of Sports Medicine and Sports Science, Gifu University Graduate School of Medicine, Gifu, Japan.
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Hoshino T, Hoshino A, Matsubara N, Matsuoka T, Kikuchi Y, Shimbo T, Shimizu T. Relationship between the number of outpatient visits for hypotension in the springtime in Japan, extracted from clinical electronic records, and global solar radiation levels. J Int Med Res 2012; 39:1169-83. [PMID: 21986119 DOI: 10.1177/147323001103900405] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hypotension is commonly reported in springtime when health changes, such as autonomic imbalance, are common and its symptoms may cause difficulties in daily activities. In this study, medical data from 101 outpatient clinic attendees (mean age 43.9 years; 16 males) making their first visit for hypotension symptoms, were compared with meteorological data from the clinic's location. The main symptom of hypotension was giddiness on standing. The most common coexisting conditions were gastrointestinal; e.g. gastro-oesophageal reflux disorder and irritable bowel syndrome. The 7-day moving average of total global solar radiation correlated significantly with the 7-day moving average of the number of patients with hypotension. Discriminant analysis revealed an increase in hypotension consultations in the total global solar radiation moving average range 11-19 MJ/m(2), consistent with the local spring season. Guidance--such as wearing compression stockings during springtime--may help to reduce the occurrence of clinical hypotension in susceptible patients.
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Affiliation(s)
- T Hoshino
- Information Management Office, National Centre for Global Health and Medicine, Tokyo, Japan.
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Iikura Y, Sakamoto Y, Imai T, Akai L, Matsuoka T, Sugihara K, Utumi M, Tomikawa M. Dolphin-Assisted Seawater Therapy for Severe Atopic Dermatitis: An Immunological and Psychological Study. Int Arch Allergy Immunol 2012. [DOI: 10.1159/000053766] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Aoki T, Nishimura M, Matsuoka T, Yamamoto K, Furuyashiki T, Kataoka H, Kitaoka S, Ishibashi R, Ishibazawa A, Miyamoto S, Morishita R, Ando J, Hashimoto N, Nozaki K, Narumiya S. PGE(2) -EP(2) signalling in endothelium is activated by haemodynamic stress and induces cerebral aneurysm through an amplifying loop via NF-κB. Br J Pharmacol 2011; 163:1237-49. [PMID: 21426319 DOI: 10.1111/j.1476-5381.2011.01358.x] [Citation(s) in RCA: 133] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Cerebral aneurysm is a frequent cerebrovascular event and a major cause of fatal subarachnoid haemorrhage, but there is no medical treatment for this condition. Haemodynamic stress and, recently, chronic inflammation have been proposed as major causes of cerebral aneurysm. Nevertheless, links between haemodynamic stress and chronic inflammation remain ill-defined, and to clarify such links, we evaluated the effects of prostaglandin E(2) (PGE(2) ), a mediator of inflammation, on the formation of cerebral aneurysms. EXPERIMENTAL APPROACH Expression of COX and prostaglandin E synthase (PGES) and PGE receptors were examined in human and rodent cerebral aneurysm. The incidence, size and inflammation of cerebral aneurysms were evaluated in rats treated with COX-2 inhibitors and mice lacking each prostaglandin receptor. Effects of shear stress and PGE receptor signalling on expression of pro-inflammatory molecules were studied in primary cultures of human endothelial cells (ECs). KEY RESULTS COX-2, microsomal PGES-1 and prostaglandin E receptor 2 (EP(2) ) were induced in ECs in the walls of cerebral aneurysms. Shear stress applied to primary ECs induced COX-2 and EP(2) . Inhibition or loss of COX-2 or EP(2) in vivo attenuated each other's expression, suppressed nuclear factor κB (NF-κB)-mediated chronic inflammation and reduced incidence of cerebral aneurysm. EP(2) stimulation in primary ECs induced NF-κB activation and expression of the chemokine (C-C motif) ligand 2, essential for cerebral aneurysm. CONCLUSIONS AND IMPLICATIONS These results suggest that shear stress activated PGE(2) -EP(2) pathway in ECs and amplified chronic inflammation via NF-κB. We propose EP(2) as a therapeutic target in cerebral aneurysm.
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Affiliation(s)
- T Aoki
- Department of Neurosurgery Kyoto University Graduate School of Medicine, Kyoto, Japan
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