1
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Uchiyama A, Kon K, Sakuma S, Sato T, Morinaga M, Fukada H, Yamagata H, Yaginuma R, Fukuhara K, Yamashina S, Nojiri S, Ikejima K. Hepatic steatosis and skeletal muscle alterations during the COVID-19 lockdown in a cohort of patients with chronic liver disease in Japan. Hepatol Res 2024; 54:272-283. [PMID: 37921697 DOI: 10.1111/hepr.13981] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 10/03/2023] [Accepted: 10/20/2023] [Indexed: 11/04/2023]
Abstract
AIM Following the coronavirus disease outbreak, a state of public emergency was declared worldwide, which enforced lifestyle changes. This study therefore aimed to investigate the changes in lifestyle, body composition, hepatic steatosis, and fibrosis in patients with chronic liver disease (CLD) under lockdown. METHODS During the lockdown period, 1344 patients with CLD answered a lifestyle questionnaire. In 298 patients, body composition and liver stiffness measure (LSM)/controlled attenuation parameter (CAP) were analyzed by InBody and FibroScan, respectively, and serial data were obtained in 137 patients. RESULTS More than half of the CLD patients answered decreases in physical activity and frequency of outings during lockdown, while diet was less affected. Overall, 58% of patients showed elevations in CAP values, which were not different statistically over time. Women, but not men, were more likely to increase CAP values during lockdown. Neither LSM nor serum fibrosis markers were elevated chronologically during lockdown. In men, body mass index (BMI), body fat percentage, and visceral fat area (VFA) were significantly increased, whereas in women, lower-limb muscle mass was significantly decreased. Patients with decreased SMI showed elevations in CAP and VFA values, and patients who exercised less showed increases in BMI. CONCLUSION In response to lockdown, men tended to increase body fat but the degree of hepatic steatosis was less affected, while women were more likely to exacerbate hepatic steatosis with skeletal muscle loss among CLD patients. Gender-specific approaches need to be established for management of CLD patients to avoid exacerbation or comorbidity of steatotic liver disease.
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Affiliation(s)
- Akira Uchiyama
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kazuyoshi Kon
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Satoshi Sakuma
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Toshifumi Sato
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Maki Morinaga
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroo Fukada
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hisafumi Yamagata
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Reiko Yaginuma
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kyoko Fukuhara
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Shunhei Yamashina
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Shuko Nojiri
- Medical Technology Innovation Center, Juntendo University, Tokyo, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
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Uchiyama A, Yamashina S, Sato T, Sakuma S, Tomiki Y, Isayama H, Nagahara A, Ikejima K. Benefit of an action camera in endoscopy education for medical students under COVID-19. BMC Med Educ 2023; 23:693. [PMID: 37740173 PMCID: PMC10517461 DOI: 10.1186/s12909-023-04702-6] [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] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 09/19/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND Endoscopy is an important form of clinical gastroenterology education because it gives students the opportunity to learn about diagnosis procedures and even treatment. During the COVID-19 pandemic, medical students were observed from outside the endoscopy room due to the risk of airborne infection. In this study, we investigated the efficacy of combining endoscopy education with doctor's-eye-view videos of the procedure obtained using live-action cameras (GoPro®). METHODS From February to May 2021, endoscopists wore GoPro Hero8 cameras on their heads to display a doctor's-eye view video outside the room. The efficacy of the GoPro videos in combination with endoscopic monitoring was evaluated by 15 participating medical students. The participants rated the efficacy on a 5-point scale and commented on the positive and negative points. RESULTS A total of 78.6% of participants evaluated the GoPro as good; 57.2% answered that it increased their understanding, with 71.4% stating that it increased their understanding of procedures in particular. A total of 85.7% of the students answered that their interest in endoscopy had increased, and 85.7% evaluated the benefit of the GoPro videos as good. In addition, 64.3% answered that the method was effective in preventing COVID-19 infection. Education using GoPro videos enabled students to feel as if they were conducting the endoscopy themselves and enabled them to concentrate on learning. CONCLUSIONS Practical endoscopic education using a GoPro is an effective educational tool that not only increases understanding of endoscopic practice but also stimulates students' interest and awareness of their future as doctors.
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Affiliation(s)
- Akira Uchiyama
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
| | - Shunhei Yamashina
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Toshifumi Sato
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Satoshi Sakuma
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Yuichi Tomiki
- Medical Education, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroyuki Isayama
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Akihito Nagahara
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
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Saji N, Ishihara Y, Murotani K, Uchiyama A, Takeda A, Sakurai T, Matsushita K. Cross-Sectional Analysis of Periodontal Disease and Cognitive Impairment Conducted in a Memory Clinic: The Pearl Study. J Alzheimers Dis 2023; 96:369-380. [PMID: 37781808 PMCID: PMC10657689 DOI: 10.3233/jad-230742] [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] [Accepted: 08/22/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND Periodontal disease (PeD) is a risk factor of Alzheimer's disease and is associated with cognitive decline in older adults. However, the relationships between subitems of neuropsychological tests and PeD have not been fully clarified. OBJECTIVE To evaluate associations between PeD and subitems of neuropsychological tests. METHODS We performed a cross-sectional analysis of data of 183 participants (women: 50%, mean age: 79 years) from a clinical study. We enrolled patients who visited our memory clinic and assessed demographics, dementia-related risk factors, neuropsychological tests, brain magnetic resonance images, and a dental screening check. We evaluated the relationships between cognitive function and PeD using multivariable logistic regression analyses. RESULTS Participants with dementia were less likely to make periodical visits to the dentist, had fewer teeth, had less frequent tooth brushing habits, and were more likely to have PeD. Impaired cognitive function was significantly associated with an increasing degree of PeD. In multivariable logistic regression analyses, impaired visuospatial function and attention were associated with twice the risk of moderate or severe PeD compared with individuals with preserved visuospatial function and attention (odds ratio: 2.11, 95% confidence interval: 1.04-4.29, p = 0.037). Impaired word recall and recognition and following commands were associated with increased risk of PeD (odds ratio: 2.80, 95% confidence interval: 1.41-5.32, p = 0.003). CONCLUSIONS Cognitive decline, such as impaired visuospatial function, attention, word recall and recognition, and inability to follow commands were independently and strongly associated with PeD. These items can be assessed easily on a daily basis.
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Affiliation(s)
- Naoki Saji
- Center for Comprehensive Care and Research on Memory Disorders, Hospital, National Center for Geriatrics and Gerontology, Aichi, Japan
| | | | - Kenta Murotani
- Biostatistics Center, Graduate School of Medicine, Kurume University, Fukuoka, Japan
| | | | - Akinori Takeda
- Center for Comprehensive Care and Research on Memory Disorders, Hospital, National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Takashi Sakurai
- Center for Comprehensive Care and Research on Memory Disorders, Hospital, National Center for Geriatrics and Gerontology, Aichi, Japan
- Department of Prevention and Care Science, Research Institute, National Center for Geriatrics and Gerontology, Aichi, Japan
- Department of Cognition and Behavioral Science, Nagoya University Graduate School of Medicine, Aichi, Japan
| | - Kenji Matsushita
- Department of Oral Disease Research, Geroscience Research Center, Research Institute, National Center for Geriatrics and Gerontology, Aichi, Japan
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4
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Uchiyama A, Fujiwara C, Shibusawa Y, Motegi S. 399 Real-world effectiveness and safety of baricitinib in Japanese patients with atopic dermatitis: possible suppressive effect of serum IL-22 levels by baricitinib. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.412] [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: 11/19/2022]
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5
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Tamiya M, Goto Y, Kenmotsu H, Kurata T, Murakami S, Yanagitani N, Taniguchi H, Kuyama S, Shimizu J, Yokoyama T, Shimada N, T. M, Tamiya A, Uchiyama A, Imaizumi K, Takahama T, Nishio M, Hayashi H, Shiraiwa N, Okura M, Kikkawa H, Thomaidou D, Kato T. EP08.02-115 A Retrospective, Multicenter, Observational Study to Evaluate Outcomes With Lorlatinib After Alectinib in ALK+ NSCLC in Japan. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.798] [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: 10/14/2022]
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6
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Overmiller A, Uchiyama A, Hope E, Sawaya A, Nayak S, Hasneen K, Dell'Orso S, Brooks S, Morasso M. 760 Cellular landscape of the skin is primed by the oral epithelial regenerative transcription factor Pitx1 to promote wound healing. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.773] [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: 10/17/2022]
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7
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Bajpai D, Mehdizadeh S, Uchiyama A, Inoue Y, Sawaya A, Nayak S, Brooks S, Kellett M, Palazzo E, Motegi S, Cataisson C, Morasso M. 088 Deciphering the molecular signals of EGFR pathway activation in Dlx3 deficient skin in cSCC. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.023] [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: 11/26/2022]
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8
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Morinaga M, Kon K, Uchiyama A, Fukada H, Fukuhara K, Yaginuma R, Nakadera E, Yamashina S, Ikejima K. Carbohydrate-deficient transferrin is a sensitive marker of alcohol consumption in fatty liver disease. Hepatol Int 2022; 16:348-358. [DOI: 10.1007/s12072-022-10298-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 01/03/2022] [Indexed: 12/22/2022]
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9
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Someya S, Uchiyama A, Arai K, Kon K, Yamashina S, Watanabe S, Ikejima K. Gender-specific development of experimental autoimmune cholangitis induced by double-stranded RNA. Biochem Biophys Res Commun 2022; 588:90-96. [PMID: 34953211 DOI: 10.1016/j.bbrc.2021.12.011] [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: 12/02/2021] [Accepted: 12/05/2021] [Indexed: 11/21/2022]
Abstract
Here we investigated the gender difference in murine cholangitis resembling human primary biliary cholangitis (PBC) caused by synthetic double-stranded RNA, and underlying hepatic innate immune responses. Female C57Bl/6 mice given repeated injections of polyinosinic-polycytidylic acid (poly I:C) for 24 weeks developed overt cholangitis with positive serum anti-mitochondria-M2 antibody, whereas male mice showed minimal pathological changes without induction in autoantibody. Poly I:C induced hepatic inflammatory cytokines and type-I interferons predominantly in females. Hepatic expression levels of toll-like receptor (TLR) 3 and melanoma differentiation-associated protein (MDA) 5 were equivalent in both genders; however, both mRNA and protein levels of retinoic acid-inducible gene (RIG)-I were nearly doubled in female livers. Following 4-week injections of poly I:C, not only hepatic RIG-I, but also TLR3 and MDA5 showed female-predominance. Moreover, hepatic RIG-I levels were 25% lower in ovariectomized mice, whereas supplementation of 17 β-estradiol enhanced hepatic RIG-I expression, as well as cytokine induction. These results clearly indicate that hepatic RIG-I expression is potentiated by estrogen, and triggers gender-dependent hepatic innate immune response against double-stranded RNA, which most likely play a pivotal role in the pathogenesis of autoimmune cholangiopathies including PBC.
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Affiliation(s)
- Shunin Someya
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Akira Uchiyama
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kumiko Arai
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kazuyoshi Kon
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shunhei Yamashina
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Sumio Watanabe
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
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10
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Asano H, Hirakawa E, Hayashi H, Hamada K, Asayama Y, Oohashi M, Uchiyama A, Higashino T. A method for improving semantic segmentation using thermographic images in infants. BMC Med Imaging 2022; 22:1. [PMID: 34979965 PMCID: PMC8721998 DOI: 10.1186/s12880-021-00730-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 06/01/2021] [Accepted: 12/23/2021] [Indexed: 12/20/2022] Open
Abstract
Background Regulation of temperature is clinically important in the care of neonates because it has a significant impact on prognosis. Although probes that make contact with the skin are widely used to monitor temperature and provide spot central and peripheral temperature information, they do not provide details of the temperature distribution around the body. Although it is possible to obtain detailed temperature distributions using multiple probes, this is not clinically practical. Thermographic techniques have been reported for measurement of temperature distribution in infants. However, as these methods require manual selection of the regions of interest (ROIs), they are not suitable for introduction into clinical settings in hospitals. Here, we describe a method for segmentation of thermal images that enables continuous quantitative contactless monitoring of the temperature distribution over the whole body of neonates. Methods The semantic segmentation method, U-Net, was applied to thermal images of infants. The optimal combination of Weight Normalization, Group Normalization, and Flexible Rectified Linear Unit (FReLU) was evaluated. U-Net Generative Adversarial Network (U-Net GAN) was applied to thermal images, and a Self-Attention (SA) module was finally applied to U-Net GAN (U-Net GAN + SA) to improve precision. The semantic segmentation performance of these methods was evaluated. Results The optimal semantic segmentation performance was obtained with application of FReLU and Group Normalization to U-Net, showing accuracy of 92.9% and Mean Intersection over Union (mIoU) of 64.5%. U-Net GAN improved the performance, yielding accuracy of 93.3% and mIoU of 66.9%, and U-Net GAN + SA showed further improvement with accuracy of 93.5% and mIoU of 70.4%. Conclusions FReLU and Group Normalization are appropriate semantic segmentation methods for application to neonatal thermal images. U-Net GAN and U-Net GAN + SA significantly improved the mIoU of segmentation.
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Affiliation(s)
- Hidetsugu Asano
- Technical Department, Atom Medical Corporation, 2-2-1, Dojo, Sakura-ku, Saitama city, Saitama, 338-0835, Japan.
| | - Eiji Hirakawa
- Department of Neonatology, Nagasaki Harbor Medical Center, 6-39, Shinchi-machi, Nagasaki City, Nagasaki, 850-8555, Japan.,Department of Neonatology, Kagoshima City Hospital, 37-1 Uearata-cho, Kagoshima City, Kagoshima, 890-8760, Japan
| | - Hayato Hayashi
- Technical Department, Atom Medical Corporation, 2-2-1, Dojo, Sakura-ku, Saitama city, Saitama, 338-0835, Japan
| | - Keisuke Hamada
- Department of Clinical Engineering, Nagasaki Harbor Medical Center, 6-39, Shinchi-machi, Nagasaki City, Nagasaki, 850-8555, Japan.,Department of Comprehensive Community Care Education, Nagasaki University Graduate School of Biomedical Sciences, 1-14, Bunkyo-machi, Nagasaki City, Nagasaki, 852-8521, Japan
| | - Yuto Asayama
- Technical Department, Atom Medical Corporation, 2-2-1, Dojo, Sakura-ku, Saitama city, Saitama, 338-0835, Japan
| | - Masaaki Oohashi
- Technical Department, Atom Medical Corporation, 2-2-1, Dojo, Sakura-ku, Saitama city, Saitama, 338-0835, Japan
| | - Akira Uchiyama
- Mobile Computing Laboratory, Graduate School of Information Science and Technology, Osaka University, 1-5, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Teruo Higashino
- Mobile Computing Laboratory, Graduate School of Information Science and Technology, Osaka University, 1-5, Yamadaoka, Suita, Osaka, 565-0871, Japan
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Ogasawara I, Hamaguchi S, Hasegawa R, Akeda Y, Ota N, Revankar GS, Konda S, Taguchi T, Takanouchi T, Imoto K, Okimoto N, Sakuma K, Uchiyama A, Yamasaki K, Higashino T, Tomono K, Nakata K. Successful Reboot of High-Performance Sporting Activities by Japanese National Women's Handball Team in Tokyo, 2020 during the COVID-19 Pandemic: An Initiative Using the Japan Sports-Cyber Physical System (JS-CPS) of the Sports Research Innovation Project (SRIP). Int J Environ Res Public Health 2021; 18:9865. [PMID: 34574789 PMCID: PMC8468396 DOI: 10.3390/ijerph18189865] [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: 08/06/2021] [Revised: 09/10/2021] [Accepted: 09/14/2021] [Indexed: 11/18/2022]
Abstract
The COVID-19 pandemic has negatively impacted sporting activities across the world. However, practical training strategies for athletes to reduce the risk of infection during the pandemic have not been definitively studied. The purpose of this report was to provide an overview of the challenges we encountered during the reboot of high-performance sporting activities of the Japanese national handball team during the 3rd wave of the COVID-19 pandemic in Tokyo, Japan. Twenty-nine Japanese national women's handball players and 24 staff participated in the study. To initiate the reboot of their first training camp after COVID-19 stay-home social policy, we conducted: web-based health-monitoring, SARS-CoV-2 screening with polymerase chain reaction (PCR) tests, real-time automated quantitative monitoring of social distancing on court using a moving image-based artificial intelligence (AI) algorithm, physical intensity evaluation with wearable heart rate (HR) and acceleration sensors, and a self-reported online questionnaire. The training camp was conducted successfully with no COVID-19 infections. The web-based health monitoring and the frequent PCR testing with short turnaround times contributed remarkably to early detection of athletes' health problems and to risk screening. During handball, AI-based on-court social-distance monitoring revealed key time-dependent spatial metrics to define player-to-player proximity. This information facilitated appropriate on- and off-game distancing behavior for teammates. Athletes regularly achieved around 80% of maximum HR during training, indicating anticipated improvements in achieving their physical intensities. Self-reported questionnaires related to the COVID management in the training camp revealed a sense of security among the athletes that allowed them to focus singularly on their training. The challenges discussed herein provided us considerable knowledge about creating and managing a safe environment for high-performing athletes in the COVID-19 pandemic via the Japan Sports-Cyber Physical System (JS-CPS) of the Sports Research Innovation Project (SRIP, Japan Sports Agency, Tokyo, Japan). This report is envisioned to provide informed decisions to coaches, trainers, policymakers from the sports federations in creating targeted, infection-free, sporting and training environments.
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Affiliation(s)
- Issei Ogasawara
- Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Osaka 5650871, Japan; (I.O.); (G.S.R.); (S.K.); (K.Y.)
| | - Shigeto Hamaguchi
- Department of Infection Control and Prevention, Graduate School of Medicine, Osaka University, Osaka 5650871, Japan; (S.H.); (Y.A.); (N.O.); (K.T.)
- Division of Infection Control and Prevention, Osaka University Hospital, Osaka 5650871, Japan
| | - Ryosuke Hasegawa
- Department of Information Networking, Graduate School of Information Science and Technology, Osaka University, Osaka 5650871, Japan;
| | - Yukihiro Akeda
- Department of Infection Control and Prevention, Graduate School of Medicine, Osaka University, Osaka 5650871, Japan; (S.H.); (Y.A.); (N.O.); (K.T.)
- Division of Infection Control and Prevention, Osaka University Hospital, Osaka 5650871, Japan
- Japan-Thailand Research Collaboration Centre on Emerging and Re-Emerging Infections, Research Institute for Microbial Diseases, Osaka University, Osaka 5650871, Japan; (A.U.); (T.H.)
| | - Naoki Ota
- Department of Infection Control and Prevention, Graduate School of Medicine, Osaka University, Osaka 5650871, Japan; (S.H.); (Y.A.); (N.O.); (K.T.)
| | - Gajanan S. Revankar
- Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Osaka 5650871, Japan; (I.O.); (G.S.R.); (S.K.); (K.Y.)
- Institute for Transdisciplinary Graduate Degree Programs, Osaka University, Osaka 5650871, Japan
| | - Shoji Konda
- Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Osaka 5650871, Japan; (I.O.); (G.S.R.); (S.K.); (K.Y.)
| | - Takashi Taguchi
- Japan Handball Association, Tokyo 1600013, Japan; (T.T.); (T.T.); (K.I.); (N.O.); (K.S.)
- Faculty of Economics and Information, Gifu Shotoku Gakuen University, Gifu 5008288, Japan
| | - Toshiya Takanouchi
- Japan Handball Association, Tokyo 1600013, Japan; (T.T.); (T.T.); (K.I.); (N.O.); (K.S.)
- T-function Inc., Tokyo 1560042, Japan
| | - Kojiro Imoto
- Japan Handball Association, Tokyo 1600013, Japan; (T.T.); (T.T.); (K.I.); (N.O.); (K.S.)
- Department of Orthopedic Surgery, Japanese Red Cross Kumamoto Hospital, Kumamoto 8618520, Japan
| | - Nobukazu Okimoto
- Japan Handball Association, Tokyo 1600013, Japan; (T.T.); (T.T.); (K.I.); (N.O.); (K.S.)
- Medical Corporation Okimoto Clinic, Hiroshima 7340304, Japan
| | - Katsuhiko Sakuma
- Japan Handball Association, Tokyo 1600013, Japan; (T.T.); (T.T.); (K.I.); (N.O.); (K.S.)
- Department of Rehabilitation, Medical Corporation Yamabe-Kai, Kumamoto Seijo Hospital, Kumamoto 8618072, Japan
| | - Akira Uchiyama
- Japan-Thailand Research Collaboration Centre on Emerging and Re-Emerging Infections, Research Institute for Microbial Diseases, Osaka University, Osaka 5650871, Japan; (A.U.); (T.H.)
| | - Keita Yamasaki
- Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Osaka 5650871, Japan; (I.O.); (G.S.R.); (S.K.); (K.Y.)
| | - Teruo Higashino
- Japan-Thailand Research Collaboration Centre on Emerging and Re-Emerging Infections, Research Institute for Microbial Diseases, Osaka University, Osaka 5650871, Japan; (A.U.); (T.H.)
| | - Kazunori Tomono
- Department of Infection Control and Prevention, Graduate School of Medicine, Osaka University, Osaka 5650871, Japan; (S.H.); (Y.A.); (N.O.); (K.T.)
- Division of Infection Control and Prevention, Osaka University Hospital, Osaka 5650871, Japan
| | - Ken Nakata
- Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, Osaka 5650871, Japan; (I.O.); (G.S.R.); (S.K.); (K.Y.)
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12
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Overmiller A, Uchiyama A, Hope E, Grassini D, Sawaya A, Nayak S, Hasneen K, Chen Y, Brooks S, Morasso M. 611 Oral epithelial regenerative transcription factor Pitx1 reprograms keratinocytes to promote cutaneous wound healing. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.640] [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: 11/30/2022]
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13
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Ogawa T, Ogaki K, Mori Y, Kamo H, Uchiyama A, Kamagata K, Nagaoka M, Hattori N. Neuronuclear and Neuromelanin-Sensitive Imaging for Acquired Hepatocerebral Degeneration with Parkinsonism. Mov Disord Clin Pract 2021; 8:464-468. [PMID: 33816680 DOI: 10.1002/mdc3.13166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 01/02/2021] [Accepted: 01/27/2021] [Indexed: 11/10/2022] Open
Affiliation(s)
- Takashi Ogawa
- Department of Neurology Juntendo University School of Medicine Tokyo Japan
| | - Kotaro Ogaki
- Department of Neurology Juntendo University School of Medicine Tokyo Japan.,Department of Neurology Juntendo University Urayasu Hospital Chiba Japan
| | - Yuko Mori
- Department of Neurology Juntendo University School of Medicine Tokyo Japan
| | - Hikaru Kamo
- Department of Neurology Juntendo University School of Medicine Tokyo Japan
| | - Akira Uchiyama
- Department of Gastroenterology Juntendo University School of Medicine Tokyo Japan
| | - Koji Kamagata
- Department of Radiology Juntendo University School of Medicine Tokyo Japan
| | - Masanori Nagaoka
- Department of Neurology Juntendo University School of Medicine Tokyo Japan
| | - Nobutaka Hattori
- Department of Neurology Juntendo University School of Medicine Tokyo Japan
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Watanabe K, Yoshida M, Okumura T, Sassa T, Kihara A, Uchiyama A. Improvement of Evaporative Dry Eye With Meibomian Gland Dysfunction in Model Mice by Treatment With Ophthalmic Solution Containing Mineral Oil. Transl Vis Sci Technol 2021; 10:21. [PMID: 34003999 PMCID: PMC8083063 DOI: 10.1167/tvst.10.4.21] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose Meibomian gland dysfunction (MGD) is a major cause of evaporative dry eye. The purpose of this study is to assess the efficacy of a mineral oil-containing ophthalmic solution (MO) in mitigating the evaporative dry eye phenotypes in a mouse model in which fatty acid elongase Elovl1 is disrupted. Methods Elovl1-deficient mice were assessed in terms of number of plugged meibomian gland orifices, tear film breakup time (BUT), corneal fluorescein staining (CFS) score, tear quantity, and histology. The effects of the MO on the dry eye phenotypes were compared with those in groups not treated or treated with blank ophthalmic solution (BL). Results Untreated Elovl1-deficient mice exhibited dry eye phenotypes with MGD symptoms such as plugging of meibomian gland orifices (P = 0.002 compared with control mice), high CFS scores (P = 0.002), and shortened BUT (P < 0.001). Among three groups of Elovl1-deficient mice (MO treated, BL treated, and untreated), the MO-treated group exhibited fewer plugged orifices (MO treated, 7.6; BL treated, 10.5 [P = 0.033]; untreated, 13.0 [P < 0.001]), lower CFS scores (MO treated, 1.1; BL treated, 2.7 [P = 0.013]; untreated, 2.5 [P = 0.050]), and improved BUT (MO treated, 19.4 seconds; BL treated, 8.3 seconds [P = 0.098]; untreated, 1.5 seconds [P = 0.008]). Conclusions Elovl1-deficient mice exhibited multiple MGD symptoms, which were improved by MO. Translational Relevance Our findings reveal the usefulness of Elovl1-deficient mice as a model for dry eye with MGD and suggest the potential of mineral oil eye drops as a treatment for this condition.
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Affiliation(s)
- Keisuke Watanabe
- Pharmaceutical Research Laboratories, Research and Development Headquarters, Lion Corporation, Kanagawa, Japan
| | - Masataka Yoshida
- Pharmaceutical Research Laboratories, Research and Development Headquarters, Lion Corporation, Kanagawa, Japan
| | - Takashi Okumura
- Pharmaceutical Research Laboratories, Research and Development Headquarters, Lion Corporation, Kanagawa, Japan
| | - Takayuki Sassa
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Akio Kihara
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Akira Uchiyama
- Pharmaceutical Research Laboratories, Research and Development Headquarters, Lion Corporation, Kanagawa, Japan
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15
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Ishizuka K, Kon K, Lee-Okada HC, Arai K, Uchiyama A, Yamashina S, Yokomizo T, Ikejima K. Aging exacerbates high-fat diet-induced steatohepatitis through alteration in hepatic lipid metabolism in mice. J Gastroenterol Hepatol 2020; 35:1437-1448. [PMID: 32030821 DOI: 10.1111/jgh.15006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 01/25/2020] [Accepted: 02/02/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIM Aging is an independent risk factor for the progression of non-alcoholic steatohepatitis. Here, we investigated the role of age-related alterations in fatty acid metabolism in dietary steatohepatitis using lipidomics analysis. METHODS Male 8-week and 55-week-old C57BL/6 J mice were fed a high-fat diet (HFD) for 8 weeks. The quality and quantity of lipid molecular species in the liver were evaluated using the lipidomics approach. RESULTS Elder mice fed an HFD developed more severe steatohepatitis than young mice. Oxidative stress and inflammatory cytokines in the liver were exacerbated following HFD feeding in elder mice compared with young mice. In elder mice, de novo fatty acid synthesis was promoted, whereas β oxidation was blunted following HFD feeding, and lipid secretion from the liver was reduced. The expression of sirtuin 1 was not only reduced with age as expected but also significantly decreased due to intake of HFD. In the lipidomics analysis, the concentrations of diacylglycerol and TAG molecular species containing monounsaturated fatty acids were markedly increased following HFD feeding in elder mice compared with young mice. In contrast, the concentration of phosphatidylethanolamine and phosphatidylcholine molecular species containing polyunsaturated fatty acids were remarkably decreased following HFD feeding in elder mice compared with young mice, and the expression of fatty acid desaturase was blunted. CONCLUSIONS Aging-dependent alterations in lipid metabolism under excessive lipid supply most likely enhance hepatic lipotoxicity, thereby exacerbating metabolic steatohepatitis in elderly.
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Affiliation(s)
- Kei Ishizuka
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kazuyoshi Kon
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hyeon-Cheol Lee-Okada
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kumiko Arai
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Akira Uchiyama
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shunhei Yamashina
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takehiko Yokomizo
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
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16
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Uchiyama A, Nagatomo T, Higurashi Y, Ohnishi J, Komiyama M, Kumagai K, Fujimaki M, Yamauchi H, Tamura M, Kaneko K, Fukunishi N, Nakagawa T. Control system for the new RIKEN 28-GHz superconducting electron cyclotron resonance ion source for SRILAC. Rev Sci Instrum 2020; 91:025101. [PMID: 32113460 DOI: 10.1063/1.5129632] [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] [Received: 09/30/2019] [Accepted: 01/11/2020] [Indexed: 06/10/2023]
Abstract
A new RIKEN 28-GHz superconducting electron cyclotron resonance ion source (SC-ECRIS) has been installed for the superconducting RIKEN linear accelerator (SRILAC). The new SC-ECRIS control system mainly consists of programmable logic controllers (PLCs) embedded with the Experimental Physics and Industrial Control System. To improve the reliability as compared with previous control systems, two types of PLC central processing units, sequential and Linux, have been installed in the same unit. Past experience has shown that new types of designs that can rapidly respond to system scalability are key. By connecting PLC stations using star-topology field buses, their rapid and cost-effective response to system changes is realized for the new devices. Furthermore, a unique data acquisition system employing a 920-MHz-band radio was developed to measure analog data such as the temperature at the high-voltage stage.
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Affiliation(s)
- A Uchiyama
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nagatomo
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Higurashi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Ohnishi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Komiyama
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Kumagai
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Fujimaki
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Yamauchi
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - M Tamura
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - K Kaneko
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - N Fukunishi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nakagawa
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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17
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Nagatomo T, Higurashi Y, Ohnishi J, Uchiyama A, Fujimaki M, Kumagai K, Fukunishi N, Sakamoto N, Nakagawa T, Kamigaito O. High intensity vanadium beam for synthesis of new superheavy elements with well-controlled emittance by using "slit triplet". Rev Sci Instrum 2020; 91:023318. [PMID: 32113411 DOI: 10.1063/1.5130431] [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] [Received: 10/03/2019] [Accepted: 01/12/2020] [Indexed: 06/10/2023]
Abstract
To provide a very powerful vanadium (V) beam with an intensity of at least 6 particle μA for synthesizing a new superheavy element (SHE) with atomic number Z = 119, we have developed a high-temperature oven (HTO) system to evaporate the metallic V powder inside the new superconducting (SC) electron cyclotron ion source. We successfully extracted a V13+ beam with a maximum beam intensity of 600 eμA with 2.8-kW microwave power and 900-W heating power of the HTO. Furthermore, from a systematic study of the dependence of the beam intensity on the microwave power and the HTO power, we successfully produced a V13+ beam of 300 eμA at a consumption rate of 3 mg/h, allowing a one-month duration continuous beam to carry out the SHE synthesis. In addition, to avoid serious damage to newly introduced SC acceleration cavities by beam losses, the beam should be transported with a well-controlled emittance. To efficiently limit the beam emittance, we employed a slit triplet consisting of three pairs of slits installed around the focus point of the low-energy beam transport. The first result of the emittance reduction was observed by a pepper-pot type emittance meter as a function of the acceptance of the slit triplet.
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Affiliation(s)
- T Nagatomo
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Higurashi
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Ohnishi
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - A Uchiyama
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Fujimaki
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Kumagai
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Fukunishi
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Sakamoto
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nakagawa
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - O Kamigaito
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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18
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Kitahara M, Seki K, Midorikawa T, Arita J, Uchiyama A. [The Analgesic Effect of Aspirin on Inflammatory Pain in Rats Is Affected by Pain Intensity and Administration Timing]. YAKUGAKU ZASSHI 2020; 140:91-97. [PMID: 31656245 DOI: 10.1248/yakushi.19-00168] [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] [Indexed: 11/22/2022]
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely known as painkillers. The analgesic action of NSAIDs is attributable to the inhibition of prostaglandin synthesis that occurs in response to blocking cyclooxygenase activity. The effective dose of NSAIDs can vary depending on pain intensity and administration timing; however, there are few studies on this. This study aimed to elucidate whether the analgesic effect of NSAIDs changes depending on the situation in which they are taken and we focused on the NSAID, aspirin (ASP). In a rat model of brewer's yeast-induced inflammation, pain caused by 20% (w/v) brewer's yeast-treatment was defined as "strong pain" and that caused by 2.5% (w/v) was defined as "weak pain". The analgesic effect of ASP (low-dose; 44 mg/kg or high-dose; 66 mg/kg) against strong pain was dose-dependent, but that against weak pain was the same. Furthermore, we defined drug administration after 3 h of brewer's yeast-treatment as "late administration" and that after 20 min as "early administration". In the case of strong pain, the analgesic effect of "late ASP administration" was dose-dependent, but that of "early ASP administration" was the same. These results suggest that low-dose NSAIDs have an analgesic effect against weak pain or when taken early.
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Affiliation(s)
- Miu Kitahara
- Pharmaceutical Research Laboratories, Research & Development Headquarters, Lion Corporation
| | - Keiko Seki
- Pharmaceutical Research Laboratories, Research & Development Headquarters, Lion Corporation
| | - Tatsuyuki Midorikawa
- Pharmaceutical Research Laboratories, Research & Development Headquarters, Lion Corporation
| | - Junya Arita
- Pharmaceutical Research Laboratories, Research & Development Headquarters, Lion Corporation
| | - Akira Uchiyama
- Pharmaceutical Research Laboratories, Research & Development Headquarters, Lion Corporation
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19
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Kitagawa R, Kon K, Uchiyama A, Arai K, Yamashina S, Kuwahara-Arai K, Kirikae T, Ueno T, Ikejima K. Rifaximin prevents ethanol-induced liver injury in obese KK-A y mice through modulation of small intestinal microbiota signature. Am J Physiol Gastrointest Liver Physiol 2019; 317:G707-G715. [PMID: 31509430 DOI: 10.1152/ajpgi.00372.2018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Exacerbation of alcoholic hepatitis (AH) with comorbid metabolic syndrome is an emerging clinical problem, where microbiota plays a profound role in the pathogenesis. Here, we investigated the effect of rifaximin (RFX) on liver injury following chronic-binge ethanol (EtOH) administration in KK-Ay mice, a rodent model of metabolic syndrome. Female, 8-wk-old KK-Ay mice were fed Lieber-DeCarli diet (5% EtOH) for 10 days, following a single EtOH gavage (4 g/kg body wt). Some mice were given RFX (0.1 g/L, in liquid diet) orally. Small intestinal contents were collected from mice without binge. Intestinal microbiota was quantified using aerobic and anaerobic culturing techniques and further analyzed by 16S rRNA sequencing in detail. EtOH feeding/binge caused hepatic steatosis, oxidative stress, and induction of inflammatory cytokines in KK-Ay mice, which were markedly prevented by RFX treatment. Hepatic mRNA levels for cluster of differentiation 14, Toll-like receptor (TLR) 4, TLR2, and NADPH oxidase 2 were increased following EtOH feeding/binge, and administration of RFX completely suppressed their increase. The net amount of small intestinal bacteria was increased over threefold after chronic EtOH feeding as expected; however, RFX did not prevent this net increase. Intriguingly, the profile of small intestinal microbiota was dramatically changed following EtOH feeding in the order level, where the Erysipelotrichales predominated in the relative abundance. In sharp contrast, RFX drastically blunted the EtOH-induced increases in the Erysipelotrichales almost completely, with increased proportion of the Bacteroidales. In conclusion, RFX prevents AH through modulation of small intestinal microbiota/innate immune responses in obese KK-Ay mice.NEW & NOTEWORTHY Here we demonstrated that rifaximin (RFX) prevents chronic-binge ethanol (EtOH)-induced steatohepatitis in KK-Ay mice. Chronic EtOH feeding caused small intestinal bacterial overgrowth, with drastic alteration in the microbiota profile predominating the order Erysipelotrichales. RFX minimized this EtOH induction in Erysipelotrichales with substitutive increases in Bacteroidales. RFX also prevented EtOH-induced increases in portal lipopolysaccharide, and hepatic cluster of differentiation 14, toll-like receptor (TLR) 2, and TLR4 mRNA levels, suggesting the potential involvement of microbiota-related innate immune responses.
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Affiliation(s)
- Ryuta Kitagawa
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kazuyoshi Kon
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Akira Uchiyama
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kumiko Arai
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shunhei Yamashina
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kyoko Kuwahara-Arai
- Department of Microbiology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Teruo Kirikae
- Department of Microbiology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takashi Ueno
- Laboratory of Proteomics and Medical Science, Research Support Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology, Juntendo University Graduate School of Medicine, Tokyo, Japan
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20
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Sekiguchi A, Fujiwara C, Yamazaki S, Inoue Y, Uchiyama A, Akai R, Iwawaki T, Ishikawa O, Motegi S. 015 Inhibitory effect of kaempferol on skin fibrosis in systemic sclerosis by the suppression of oxidative stress. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.018] [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: 10/26/2022]
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21
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Sato S, Nomura M, Yamana I, Uchiyama A, Furuichi Y, Manabe Y, Fujii NL. A new in vitro muscle contraction model and its application for analysis of mTORC1 signaling in combination with contraction and beta-hydroxy-beta-methylbutyrate administration. Biosci Biotechnol Biochem 2019; 83:1851-1857. [PMID: 31159662 DOI: 10.1080/09168451.2019.1625261] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Several food constituents augment exercise-induced muscle strength improvement; however, the detailed mechanism underlying these combined effects is unknown because of the lack of a cultured cell model for evaluating the contraction-induced muscle protein synthesis level. Here, we aimed to establish a new in vitro muscle contraction model for analyzing the activation of mammalian target of rapamycin complex 1 (mTORC1) signaling. We adopted the tetanic electric stimulation of 50 V at 100 Hz for 10 min in L6.C11 myotubes. Akt, ERK1/2, and p70S6K phosphorylation increased significantly after electrical pulse stimulation (EPS), compared to untreated cells. Next, we used this model to analyze mTORC1 signaling in combination with exercise and beta-hydroxy-beta-methylbutyrate (HMB), an l-leucine metabolite. p70S6K phosphorylation increased significantly in the EPS+HMB group compared to that in the EPS-alone group. These findings show that our model could be used to analyze mTORC1 signaling and that HMB enhances muscle contraction-activated mTORC1 signaling.
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Affiliation(s)
- Satoko Sato
- Research and Development Headquarters, Lion Corporation , Odawara , Japan
| | - Mitsuru Nomura
- Research and Development Headquarters, Lion Corporation , Odawara , Japan
| | - Ikko Yamana
- Research and Development Headquarters, Lion Corporation , Odawara , Japan
| | - Akira Uchiyama
- Research and Development Headquarters, Lion Corporation , Odawara , Japan
| | - Yasuro Furuichi
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University , Hachioji , Japan
| | - Yasuko Manabe
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University , Hachioji , Japan
| | - Nobuharu L Fujii
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University , Hachioji , Japan
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22
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Uchiyama A, Nayak S, Nayak S, Cross M, Overmiller A, Grassini D, Sawaya A, Gutkind J, Brooks S, Morasso M. 930 SOX2 epidermal overexpression promotes cutaneous wound healing via activation of EGFR/MEK/ERK signaling mediated by EGFR ligands. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.1006] [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]
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23
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Suzuki M, Kon K, Ikejima K, Arai K, Uchiyama A, Aoyama T, Yamashina S, Ueno T, Watanabe S. The Chemical Chaperone 4-Phenylbutyric Acid Prevents Alcohol-Induced Liver Injury in Obese KK-A y Mice. Alcohol Clin Exp Res 2019; 43:617-627. [PMID: 30748014 DOI: 10.1111/acer.13982] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 08/25/2018] [Accepted: 02/08/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND Co-occurrence of metabolic syndrome and chronic alcohol consumption is increasing worldwide. The present study investigated the effect of the chemical chaperone 4-phenylbutyric acid (PBA)-which has been shown to alleviate dietary steatohepatitis caused by endoplasmic reticulum (ER) stress-on chronic-plus-binge ethanol (EtOH)-induced liver injury in a mouse model of obesity. METHODS Male KK-Ay mice (8 weeks old) were fed a Lieber-DeCarli diet (5% EtOH) for 10 days. Some mice were given PBA intraperitoneally (120 mg/kg body weight, daily) during the experimental period. On day 11, mice were gavaged with a single dose of EtOH (4 g/kg body weight). Control mice were given a dextrin gavage after being pair-fed a control diet. All mice were then serially euthanized before or at 9 hours after gavage. RESULTS Chronic-plus-binge EtOH intake induced massive hepatic steatosis along with hepatocyte apoptosis and inflammation, which was reversed by PBA treatment. Administration of PBA also suppressed chronic-plus-binge EtOH-induced up-regulation of ER stress-related genes including binding immunoglobulin protein (Bip), unspliced and spliced forms of X-box-binding protein-1 (uXBP1 and sXBP1, respectively), inositol trisphosphate receptor (IP3R), and C/EBP homologous protein (CHOP). Further, it blocked chronic-plus-binge EtOH-induced expression of the oxidative stress marker heme oxygenase-1 (HO-1) and 4-hydroxynonenal. Chronic EtOH alone (without binge) increased Bip and uXBP1, but it did not affect those of sXBP1, IP3R, CHOP, or HO-1. PBA reversed the prebinge expression of these genes to control levels, but it did not affect chronic EtOH-induced hepatic activity of cytochrome P450 2E1. CONCLUSIONS Binge EtOH intake after chronic consumption induces massive ER stress-related oxidative stress and liver injury in a mouse model of obesity through dysregulation of the unfolded protein response. PBA ameliorated chronic-plus-binge EtOH-induced liver injury by reducing ER and oxidative stress after an EtOH binge.
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Affiliation(s)
- Maiko Suzuki
- Department of Gastroenterology , Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kazuyoshi Kon
- Department of Gastroenterology , Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology , Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kumiko Arai
- Department of Gastroenterology , Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Akira Uchiyama
- Department of Gastroenterology , Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tomonori Aoyama
- Department of Gastroenterology , Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shunhei Yamashina
- Department of Gastroenterology , Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takashi Ueno
- Laboratory of Proteomics and Biomolecular Science, Laboratory of Proteomics and Medical Science, Research Support Center, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Sumio Watanabe
- Department of Gastroenterology , Juntendo University Graduate School of Medicine, Tokyo, Japan
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24
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Uchiyama A, Harada K, Sakamoto K, Dammalapati U, Inoue T, Itoh M, Ito S, Kawamura H, Tanaka KS, Yoshioka R, Sakemi Y. Effective multiple sideband generation using an electro-optic modulator for a multiple isotope magneto-optical trap. Rev Sci Instrum 2018; 89:123111. [PMID: 30599547 DOI: 10.1063/1.5054748] [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] [Received: 09/03/2018] [Accepted: 11/18/2018] [Indexed: 06/09/2023]
Abstract
Herein, we report an effective method for the generation of radio-frequency (RF) sidebands in an electro-optic modulator for the simultaneous magneto-optical trapping of two isotopes. This is achieved by switching the RF signals alternately, which suppresses the generation of unwanted frequency signals and improves the laser power per sideband. The generated sidebands are successfully applied to a dual-rubidium-isotope magneto-optical trap (MOT), which results in an increased number of trapped atoms. This simple, flexible, and robust technique can be implemented in experiments that require a large number of atoms in multiple-isotope MOTs and for various applications.
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Affiliation(s)
- A Uchiyama
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - K Harada
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - K Sakamoto
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - U Dammalapati
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - T Inoue
- Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - M Itoh
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - S Ito
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - H Kawamura
- Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - K S Tanaka
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - R Yoshioka
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Y Sakemi
- Center for Nuclear Study (CNS), The University of Tokyo, Wako, Saitama 351-0198, Japan
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25
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Uchiyama A, Nagai Y, Takigami A, Sata M, Hagiwara K. P2.12-09 Efficacy and Safety of Carboplatin and Paclitaxel for Patients Preexisting Interstitial Lung Disease with Small Cell Lung Cancer. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26
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Fukushima H, Yamashina S, Arakawa A, Taniguchi G, Aoyama T, Uchiyama A, Kon K, Ikejima K, Watanabe S. Formation of p62-positive inclusion body is associated with macrophage polarization in non-alcoholic fatty liver disease. Hepatol Res 2018; 48:757-767. [PMID: 29473277 DOI: 10.1111/hepr.13071] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 01/27/2018] [Accepted: 02/17/2018] [Indexed: 02/08/2023]
Abstract
AIM Hepatic inclusion composed of autophagy-specific substrate p62 is one of the histological features of non-alcoholic fatty liver disease (NAFLD) and can be a precursor to hepatic carcinogenesis. The expression of p62 was enhanced by not only autophagic dysfunction but also oxidative stress and inflammation. M1/M2 phenotypic balance of macrophages plays a pivotal role in the progression of NAFLD. We evaluated the correlation between macrophage polarization and the formation of p62 aggregation in NAFLD. METHODS Liver biopsy specimens from NAFLD patients were analyzed by immunohistochemical staining for M1 macrophage marker CD11c, M2 macrophage marker CD163, and p62/SQSTM1 (p62). The histological severity of NAFLD is assessed by a NAFLD activity score (NAS). The number of autophagic vesicles in hepatocytes was visualized and counted by using transmission electron microscopy. RESULTS The aggregation of p62 was undetectable in control, whereas hepatocytes with p62 aggregation were observed in approximately 88% of NAFLD specimens. The number of hepatocytes with p62 aggregation was positively correlated with the number of autophagic vesicles, serum alanine aminotransferase, NAS, fibrosis, and the number of CD11c-positive cells, but not CD163-positive cells. Assembly of CD11c-positive cells was observed around hepatocytes with p62 aggregation. The ratio of CD11c/CD163-positive macrophages was significantly associated with the formation of p62 aggregation. CONCLUSIONS These findings indicate that chronic inflammation by M1-polarization of macrophages contributes to the disease progression from simple steatosis to non-alcoholic steatohepatitis in concert with autophagic dysfunction.
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Affiliation(s)
- Hirofumi Fukushima
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Shunhei Yamashina
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Atsushi Arakawa
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan
| | - Gentaro Taniguchi
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Tomonori Aoyama
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Akira Uchiyama
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kazuyoshi Kon
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Sumio Watanabe
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
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27
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Takamura Y, Nomura M, Uchiyama A, Fujita S. Effects of Aerobic Exercise Combined with Panaxatriol Derived from Ginseng on Insulin Resistance and Skeletal Muscle Mass in Type 2 Diabetic Mice. J Nutr Sci Vitaminol (Tokyo) 2018; 63:339-348. [PMID: 29225319 DOI: 10.3177/jnsv.63.339] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Insulin resistance reduces insulin-induced muscle protein synthesis and accelerates muscle protein degradation. Ginseng ingestion has been reported to improve insulin resistance through the phosphoinositide 3-kinase (PI3K)/Akt signaling pathway. We hypothesized that panaxatriol (PT) derived from ginseng in combination with aerobic exercise (EX) may further promote protein synthesis and suppress protein degradation, and subsequently maintain muscle mass through the amelioration of insulin resistance. KKAy insulin-resistant mice were divided into control, panaxatriol only (PT), exercise only (EX), and EX+PT groups. EX and EX+PT ran on the treadmill for 45 min at 15 m/min 5 d/wk for 6 wk. PT and EX+PT groups were fed a standard diet containing 0.2% PT for 6 wk. Homeostasis model assessment for insulin resistance (HOMA-R) values was significantly improved after exercise for 6 wk. Moreover, EX+PT mice showed improved HOMA-R as compared to EX mice. p70S6K phosphorylation after a 4 h fast was significantly higher in EX than in the non-exercise control, and it was higher in EX+PT mice than in EX mice. Atrogin1 mRNA expression was significantly lower in EX than in the non-exercise control, and was significantly lowered further by PT treatment. EX and EX+PT mice showed higher soleus muscle mass and cross-sectional area (CSA) of the soleus myofibers than control animals, with higher values noted for both parameters in EX+PT than in EX. These results suggest that aerobic exercise and PT ingestion may contribute to maintain skeletal muscle mass through the amelioration of insulin resistance.
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Affiliation(s)
- Yusuke Takamura
- Research and Development Headquarters, Lion Corporation.,Faculty of Sport and Health Science, Ritsumeikan University
| | | | | | - Satoshi Fujita
- Faculty of Sport and Health Science, Ritsumeikan University
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28
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Uchiyama A, Yaguchi T, Nakagawa H, Sasaki K, Kuwata N, Matsuura H, Takahashi K. Biosynthesis and in vitro enzymatic synthesis of the isoleucine conjugate of 12-oxo-phytodienoic acid from the isoleucine conjugate of α-linolenic acid. Bioorg Med Chem Lett 2018; 28:1020-1023. [DOI: 10.1016/j.bmcl.2018.02.030] [Citation(s) in RCA: 8] [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] [Received: 11/10/2017] [Revised: 02/11/2018] [Accepted: 02/14/2018] [Indexed: 11/27/2022]
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29
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Sato S, Takamura Y, Yamana I, Nomura M, Uchiyama A, Furuichi Y, Manabe Y, Fujii NL. Beta‐hydroxy‐beta‐methylbutyrate (HMB) augments muscle contraction‐induced protein synthesis via mTORC1 signaling in cultured L6 myotubes. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.768.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Satoko Sato
- Research and Development HeadquartersLion CorporationKanagawaJapan
| | - Yusuke Takamura
- Research and Development HeadquartersLion CorporationKanagawaJapan
| | - Ikko Yamana
- Research and Development HeadquartersLion CorporationKanagawaJapan
| | - Mitsuru Nomura
- Research and Development HeadquartersLion CorporationKanagawaJapan
| | - Akira Uchiyama
- Research and Development HeadquartersLion CorporationKanagawaJapan
| | - Yasuro Furuichi
- Department of Health Promotion SciencesGraduate School of Human Health SciencesTokyo Metropolitan UniversityTokyoJapan
| | - Yasuko Manabe
- Department of Health Promotion SciencesGraduate School of Human Health SciencesTokyo Metropolitan UniversityTokyoJapan
| | - Nobuharu L. Fujii
- Department of Health Promotion SciencesGraduate School of Human Health SciencesTokyo Metropolitan UniversityTokyoJapan
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30
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Momose K, Komiya K, Uchiyama A. Nonlinear Analysis of Visual Evoked Potentials Elicited by Color Stimulation. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636871] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Abstract:The relationship between chromatically modulated stimuli and visual evoked potentials (VEPs) was considered. VEPs of normal subjects elicited by chromatically modulated stimuli were measured under several color adaptations, and their binary kernels were estimated. Up to the second-order, binary kernels obtained from VEPs were so characteristic that the VEP-chromatic modulation system showed second-order nonlinearity. First-order binary kernels depended on the color of the stimulus and adaptation, whereas second-order kernels showed almost no difference. This result indicates that the waveforms of first-order binary kernels reflect perceived color (hue). This supports the suggestion that kernels of VEPs include color responses, and could be used as a probe with which to examine the color visual system.
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31
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Shibata S, Ohtuka Y, Hattori M, Aoshima T, Tohyama S, Uchiyama A, Kashihara H, Tamura M, Tsuchiya A, Yoshida K, Sasamori N, Tanaka Y. Subjective Symptoms Acquisition System in a Health Promotion System for the Elderly. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractA previous report was concerned with the evaluation of quality of life using a Health Promotion System for the Elderly. In the present report, we describe one part of that system: a subjective symptoms acquisition and reporting system.The main purpose of this system is to permit any physician or nurse to uniformly employ questionnaires to acquire accurate subjective symptoms. This system is applied in three steps. First, the subjective answers to 21 questions displayed on a personal computer are obtained. These answers correspond to the basic subjective symptoms. Second, if a basic subjective symptom is “positive”, more detailed questions are automatically generated. Finally, clear sentences regarding subjective symptoms are generated and output as a “finding report”.This information is helpful to physicians and nurses in their health-counseling work. An artificial intelligence (AI) program based on “XpertRule” produces detailed questions which are generated by an interactive questionnaire using branching logical rules.
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32
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Tsutsumi K, Maruyama M, Uchiyama A, Shibasaki K. Characterisation of a sucrose-independent in vitro biofilm model of supragingival plaque. Oral Dis 2017; 24:465-475. [PMID: 28898513 DOI: 10.1111/odi.12779] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 08/10/2017] [Accepted: 09/06/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Sugar consumption has been decreasing in Japan, suggesting higher rates of sucrose-independent supragingival plaque formation. For developing an in vitro biofilm model of sucrose-independent supragingival plaque, this study aimed to investigate the compositions and functions on contributing to cariogenicity in comparison with sucrose-dependent biofilm. MATERIALS AND METHODS An in vitro multispecies biofilm containing Actinomyces naeslundii, Streptococcus gordonii, S. mutans, Veillonella parvula and Fusobacterium nucleatum was formed on 24-well plates in the absence or presence of 1% sucrose. Compositions were assessed by plate culture, scanning electron microscopy and confocal laser scanning microscopy after fluorescent in situ hybridisation or labelling of extracellular polymeric substances (EPS). Functions were assessed by acidogenicity, adherence strength and sensitivities to anticaries agents. RESULTS Although both biofilms exhibited a Streptococcus predominant bacterial composition, there were differences in bacterial and EPS compositions; in particular, little glucan EPS was observed in sucrose-independent biofilm. Compared with sucrose-dependent biofilm, acidogenicity, adherence strength and antimicrobial resistance of sucrose-independent biofilm were only slightly lower. However, dextranase degradation was substantially lower in sucrose-independent biofilm. CONCLUSION Our findings suggest that sucrose-independent biofilm may have cariogenicity as with sucrose-dependent biofilm. These in vitro models can help further elucidate plaque-induced caries aetiology and develop new anticaries agents.
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Affiliation(s)
- K Tsutsumi
- Section of Oral Health Promotion and Technology, Division of Oral Health, Technology and Epidemiology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,Oral Care Research Laboratories, Research and Development Headquarters, Lion Corporation, Tokyo, Japan
| | - M Maruyama
- Oral Care Research Laboratories, Research and Development Headquarters, Lion Corporation, Tokyo, Japan
| | - A Uchiyama
- Section of Oral Health Promotion and Technology, Division of Oral Health, Technology and Epidemiology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,Functional Food Research Laboratories, Research and Development Headquarters, Lion Corporation, Odawara, Japan
| | - K Shibasaki
- Section of Oral Health Promotion and Technology, Division of Oral Health, Technology and Epidemiology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,Oral Care Research Laboratories, Research and Development Headquarters, Lion Corporation, Tokyo, Japan
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33
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Cheong SM, Totsu S, Nakanishi H, Uchiyama A, Kusuda S. Outcomes of peripherally inserted double lumen central catheter in very low birth weight infants. J Neonatal Perinatal Med 2017; 9:99-105. [PMID: 27002262 DOI: 10.3233/npm-16915054] [Citation(s) in RCA: 5] [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] [Indexed: 02/07/2023]
Abstract
OBJECTIVE In order to evaluate safety and usefulness of peripherally inserted double lumen central catheter (PIDLCC) in very low birth weight (VLBW) infants, outcomes of VLBW infants who had PIDLCC was studied. SUBJECTIVE Thirty-nine VLBW infants who were admitted to our NICU in 2013 were retrospectively analyzed. RESULTS Mean birth weight and gestational age was 1042.7 gram and 28.5 weeks, respectively. Total duration of indwelling PIDLCC was 1121 days (mean 28.5+18.2 days) with 85 PIDLCCs used. Dressing at the insertion site was done twice weekly with 10% povidone iodine. Four (10.3% with mean of 48 days) infants had catheter-related blood stream infection (CRBSI), with a 3.57 infection per 1000 catheter-day. The mean for days of PIDLCC in 35 infants without CRBSI was 26.5 days. Organisms isolated were Staphylococcus epidermidis, Staphylococcus aureus and Staphylococcus capitis ureolytic. Our study showed significant difference in the duration of indwelling catheter (p = 0.023) and intraventricular hemorrhage (p = 0.043) between the CRBSI group and non-CRBSI group. Five (12.8%) infants had abnormal thyroid function test, in which two infants required thyroxine supplementation upon discharge. However, duration of PIDLCC and abnormal thyroid function test was not statistically significant (p = 0.218). One (2.5%) infant died (death was not related to CRBSI). There was no serious adverse effects secondary to PIDLCC. CONCLUSION It is concluded that the use and maintenance of PIDLCC is safe for VLBW infants, but close monitoring should be observed to detect early signs of infection.
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Affiliation(s)
- S M Cheong
- Department of Paediatrics, Hospital Tengku Ampuan Afzan, Kuantan Pahang, Malaysia.,Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan
| | - S Totsu
- Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan
| | - H Nakanishi
- Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan
| | - A Uchiyama
- Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan
| | - S Kusuda
- Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan
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34
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Uchiyama A, Kushima R, Watanabe T, Kusuda S. Effect of L-thyroxine supplementation on very low birth weight infants with transient hypothyroxinemia of prematurity at 3 years of age. J Perinatol 2017; 37:602-605. [PMID: 28125093 DOI: 10.1038/jp.2016.266] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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] [Received: 08/26/2016] [Revised: 11/26/2016] [Accepted: 12/13/2016] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To evaluate the effects of levothyroxine (L-T4) supplementation on growth and neurodevelopmental outcomes at 3 years of age in very low birth weight (VLBW) infants with transient hypothyroxinemia of prematurity (THOP). STUDY DESIGN VLBW infants with plasma thyroid-stimulating hormone concentrations <10 mIU l-1 and free thyroxine concentrations <0.8 ng dl-1 were defined as having THOP and randomly assigned to the Treated (20 infants) or Untreated (31 infants) group. The Treated group received L-T4 at a dose of 5 μg kg-1 day-1. Growth and neurodevelopmental outcomes at 3 years of age were compared between the two groups. RESULTS There were no significant differences in body length, body weight or head circumference mean s.d. scores or in neurodevelopmental outcomes between the two groups. CONCLUSION L-T4 supplementation in VLBW infants with THOP demonstrated no beneficial effect at 3 years of age.
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Affiliation(s)
- A Uchiyama
- Department of Neonatal Medicine, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan.,Tokyo Metropolitan Neonatal Research Group, Tokyo, Japan
| | - R Kushima
- Tokyo Metropolitan Neonatal Research Group, Tokyo, Japan.,Department of Neonatology, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan
| | - T Watanabe
- Tokyo Metropolitan Neonatal Research Group, Tokyo, Japan.,Department of Neonatology, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan
| | - S Kusuda
- Department of Neonatal Medicine, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan.,Tokyo Metropolitan Neonatal Research Group, Tokyo, Japan
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35
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Perera B, Uchiyama A, Sekiguchi A, Fujiwara C, Ishikawa O, Motegi S. 547 Mechanistic insight into the extracellular ATP-induced IL-6 via purinergic receptor in systemic sclerosis dermal fibroblasts. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.568] [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: 10/19/2022]
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36
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Kon K, Ikejima K, Morinaga M, Kusama H, Arai K, Aoyama T, Uchiyama A, Yamashina S, Watanabe S. L-carnitine prevents metabolic steatohepatitis in obese diabetic KK-A y mice. Hepatol Res 2017; 47:E44-E54. [PMID: 27062266 DOI: 10.1111/hepr.12720] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/03/2016] [Accepted: 04/05/2016] [Indexed: 02/08/2023]
Abstract
AIM Pharmacological treatment for metabolic syndrome-related non-alcoholic steatohepatitis has not been established. We investigated the effect of L-carnitine, an essential substance for β-oxidation, on metabolic steatohepatitis in mice. METHODS Male KK-Ay mice were fed a high-fat diet (HFD) for 8 weeks, with supplementation of L-carnitine (1.25 mg/mL) in drinking water for the latter 4 weeks. RESULTS Serum total carnitine levels were decreased following HFD feeding, whereas the levels were reversed almost completely by L-carnitine supplementation. In mice given L-carnitine, exacerbation of hepatic steatosis and hepatocyte apoptosis was markedly prevented even though HFD feeding was continued. Body weight gain, as well as hyperlipidemia, hyperglycemia, and hyperinsulinemia, following HFD feeding were also significantly prevented in mice given L-carnitine. High-fat diet feeding elevated hepatic expression levels of carnitine palmitoyltransferase 1A mRNA; however, production of β-hydroxybutyrate in the liver was not affected by HFD alone. In contrast, L-carnitine treatment significantly increased hepatic β-hydroxybutyrate contents in HFD-fed mice. L-carnitine also blunted HFD induction in sterol regulatory element binding protein-1c mRNA in the liver. Furthermore, L-carnitine inhibited HFD-induced serine phosphorylation of insulin receptor substrate-1 in the liver. L-carnitine decreased hepatic free fatty acid content in 1 week, with morphological improvement of swollen mitochondria in hepatocytes, and increases in hepatic adenosine 5'-triphosphate content. CONCLUSIONS L-carnitine ameliorates steatohepatitis in KK-Ay mice fed an HFD, most likely through facilitating mitochondrial β-oxidation, normalizing insulin signals, and inhibiting de novo lipogenesis in the liver. It is therefore postulated that supplementation of L-carnitine is a promising approach for prevention and treatment of metabolic syndrome-related non-alcoholic steatohepatitis.
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Affiliation(s)
- Kazuyoshi Kon
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Maki Morinaga
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiromi Kusama
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kumiko Arai
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Tomonori Aoyama
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Akira Uchiyama
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Shunhei Yamashina
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - Sumio Watanabe
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
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37
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Aoyama T, Takada H, Uchiyama A, Kon K, Yamashina S, Ikejima K, Ban H, Watanabe S. A Customized Online Nutrition Guidance System Is Effective for Treating Patients with Nonalcoholic Fatty Liver Disease by Supporting Continuity of Diet Therapy at Home: A Pilot Study. Intern Med 2017; 56:1651-1656. [PMID: 28674352 PMCID: PMC5519465 DOI: 10.2169/internalmedicine.56.8187] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Continuity is required for diet therapy, but it depends on patients. We examined the utility of a new tool, the customized online nutrition guidance system, in patients with nonalcoholic fatty liver disease (NAFLD). Seven patients plotted their body weight (BW) and marked a customized task card on completion for 90 days on a website. The instructors encouraged them by e-mail. BW, serum transaminase levels, and system usage were evaluated. The results showed that BW and serum alanine aminotransferase levels were significantly lower than at baseline. BW and task visualization as well as encouragement by e-mails were effective in ensuring continuity. Thus, this system is effective in keeping NAFLD patients motivated to continue their diet therapy.
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Affiliation(s)
| | - Hidekatsu Takada
- Center for Technology Innovation-Healthcare, Research & Development Group, Hitachi, Ltd., Japan
| | - Akira Uchiyama
- Department of Gastroenterology, Juntendo University, Japan
| | - Kazuyoshi Kon
- Department of Gastroenterology, Juntendo University, Japan
| | | | | | - Hideyuki Ban
- Center for Technology Innovation-Healthcare, Research & Development Group, Hitachi, Ltd., Japan
| | - Sumio Watanabe
- Department of Gastroenterology, Juntendo University, Japan
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38
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Noshiro H, Yoda Y, Hiraki M, Kono H, Miyake S, Uchiyama A, Nagai E. Survival outcomes of 220 consecutive patients with three-staged thoracoscopic esophagectomy. Dis Esophagus 2016; 29:1090-1099. [PMID: 26541471 DOI: 10.1111/dote.12426] [Citation(s) in RCA: 8] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Patients with thoracic esophageal cancer are often treated by minimally invasive esophagectomy. However, the long-term survival benefits of minimally invasive esophagectomy remain unclear. Two approaches are available for thoracoscopic surgery: one with the patient in the left lateral decubitus position (LLDP), and the other with the patient in the prone position (PP). We investigated the survival benefit of thoracoscopic esophagectomy according to the tumor stage and patient position during the thoracoscopic procedure. We reviewed the records of 220 consecutive patients with esophageal cancer treated from 1998 to 2012. In total, 146 and 74 patients were treated with thoracoscopic esophagectomy in the LLDP and PP, respectively. No patients were initially proposed to be candidates for esophagectomy by thoracotomy during the study period. Data collection was performed with a focus on survival and recurrent disease. Among all the 220 patients, the overall 5-year survival rates were 83.7%, 74.1%, 45.5%, 78.6%, 44.2%, 29.4% and 24.3% in the patients with pStage IA, IB, IIA, IIB, IIIA, IIIB and IIIC disease, respectively. Despite the greater number of dissected mediastinal lymph nodes in the PP procedure, there were no significant differences in the survival curves between the LLDP and PP procedures. The long-term results of thoracoscopic esophagectomy are comparable and acceptable. The PP procedure was not confirmed to offer a superior survival benefit to the LLDP procedure in this retrospective study.
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Affiliation(s)
- H Noshiro
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - Y Yoda
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - M Hiraki
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - H Kono
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - S Miyake
- Department of Surgery, Saga University Faculty of Medicine, Saga, Japan
| | - A Uchiyama
- Department of Surgery, JCHO Kyushu Hospital, Kitakyushu, Japan
| | - E Nagai
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Monoi N, Matsuno A, Nagamori Y, Kimura E, Nakamura Y, Oka K, Sano T, Midorikawa T, Sugafuji T, Murakoshi M, Uchiyama A, Sugiyama K, Nishino H, Urade Y. Japanese sake yeast supplementation improves the quality of sleep: a double-blind randomised controlled clinical trial. J Sleep Res 2016; 25:116-23. [PMID: 26354605 DOI: 10.1111/jsr.12336] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 07/03/2015] [Indexed: 11/28/2022]
Abstract
Activation of adenosine A2a receptors in cerebral neurons induces sleep in various mammals. It was previously found that Japanese sake yeast enriched in adenosine analogues activates A2a receptors in vitro and induces sleep in mice. Here it is reported that sake yeast activated A2a receptors in a cultured human cell line and improved human sleep quality in a clinical trial. Sake yeast activated A2a receptors in HEK cells in a dose-dependent manner with an EC50 of 40 μg mL(-1), and the activation was attenuated almost completely by the A2a receptor antagonist ZM241385 with an IC50 of 73 nm. In a double-blind placebo-controlled crossover clinical study, 68 healthy participants ingested tablets containing either 500 mg of sake yeast powder or a placebo (cellulose) 1 h before sleep for 4 days. Electroencephalograms were recorded during sleep at home with a portable device for 4 week days. Electroencephalogram analyses revealed that sake yeast supplementation significantly (P = 0.03) increased delta power during the first cycle of slow-wave sleep by 110%, without changing other sleep parameters. Sake yeast supplementation also significantly increased growth hormone secretion in the urine on awakening by 137% from 3.17 ± 0.41 (placebo) to 4.33 ± 0.62 (sake yeast) pg mg(-1) creatinine (P = 0.03). Subjective sleepiness (P = 0.02) and fatigue (P = 0.06) in the morning were improved by sake yeast. Given these benefits and the absence of adverse effects during the study period, it was concluded that sake yeast supplementation is an effective and safe way to support daily high-quality, deep sleep.
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Nakanishi H, Uchiyama A, Kusuda S. Impact of pulmonary hypertension on neurodevelopmental outcome in preterm infants with bronchopulmonary dysplasia: a cohort study. J Perinatol 2016; 36:890-6. [PMID: 27442157 PMCID: PMC5050265 DOI: 10.1038/jp.2016.108] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [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: 02/04/2016] [Revised: 04/28/2016] [Accepted: 06/08/2016] [Indexed: 11/10/2022]
Abstract
OBJECTIVES To evaluate the impact of pulmonary hypertension (PH) on long-term growth and neurodevelopmental outcomes of extremely preterm infants with bronchopulmonary dysplasia (BPD). STUDY DESIGN A single-center retrospective cohort of preterm infants born at <28 weeks gestational age from 2000 to 2011 was evaluated at 3 years of age. Growth and neurodevelopmental outcomes were compared among 3 groups: non-BPD, BPD without PH and BPD with PH. BPD was defined according to oxygen demand at 36 weeks postmenstrual age. PH was diagnosed by echocardiography during the neonatal intensive care unit stay. RESULTS Sixty-two infants without BPD, 60 with BPD without PH and 20 with BPD with PH were analyzed. Regardless of PH status, somatic growth was smaller in both BPD groups of infants than in non-BPD infants, with further reduction in the group having BPD with PH. Furthermore, a developmental quotient of <70 was more prevalent in the BPD infants with PH than in the BPD infants without PH (odds ratio (OR): 4.37; 95% confidence interval, CI: 1.16 to 16.5). Multivariate analysis demonstrated that BPD with PH was one of the independent perinatal risk factors for developmental quotient <70 at 3 years of age (OR: 4.94, 95% confidence interval: 1.06 to 24.1). CONCLUSION PH had an additional negative effect on long-term growth and neurodevelopmental outcomes of extremely preterm infants with BPD.
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Affiliation(s)
- H Nakanishi
- Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan,Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan. E-mail:
| | - A Uchiyama
- Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan
| | - S Kusuda
- Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan
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Nakamura Y, Midorikawa T, Monoi N, Kimura E, Murata-Matsuno A, Sano T, Oka K, Sugafuji T, Uchiyama A, Murakoshi M, Sugiyama K, Nishino H, Urade Y. Oral administration of Japanese sake yeast (Saccharomyces cerevisiae sake) promotes non-rapid eye movement sleep in mice via adenosine A 2A receptors. J Sleep Res 2016; 25:746-753. [PMID: 27338238 DOI: 10.1111/jsr.12434] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 02/15/2016] [Accepted: 05/05/2016] [Indexed: 11/27/2022]
Abstract
We have demonstrated previously that Japanese sake yeast improves sleep quality in humans. In the present study, we examined the molecular mechanisms of sake yeast to induce sleep by monitoring locomotor activity, electromyogram and electroencephalogram in mice. Oral administration of Japanese sake yeast (100, 200, and 300 mg kg-1 ) decreased the locomotor activity by 18, 46 and 59% and increased the amount of non-rapid eye movement (NREM) sleep by 1.5-, 2.3- and 2.4-fold (to 37 ± 6, 57 ± 8, and 60 ± 4 min from 25 ± 6 min in the vehicle-administered group, respectively) in a dose-dependent manner for 4 h after oral administration. However, Japanese sake yeast did not change the amount of rapid eye movement (REM) sleep, the electroencephalogram power density during NREM sleep or show any adverse effects, such as rebound of insomnia, during 24 h postadministration and on the next day. An intraperitoneal pretreatment with an adenosine A2A receptor-selective antagonist, ZM241385 (15 mg kg-1 ), reduced the amount of NREM sleep of sake yeast-administered mice to the basal level, without changing basal amount of sleep. Conversely, an A1 receptor-selective antagonist, 8-cyclopentyltheophylline (10 mg kg-1 ), did not affect the sleep-promoting effect of Japanese sake yeast. Thus, Japanese sake yeast promotes NREM sleep via activation of adenosine A2A but not A1 receptors.
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Affiliation(s)
- Yoshitaka Nakamura
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan.,International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Tatsuyuki Midorikawa
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan.,International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Noriyuki Monoi
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan
| | - Eriko Kimura
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan
| | - Ayumi Murata-Matsuno
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan
| | - Tomomi Sano
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan
| | - Kengo Oka
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan
| | - Toshihiro Sugafuji
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan
| | - Akira Uchiyama
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan
| | - Michiaki Murakoshi
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan.,Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Keikichi Sugiyama
- Research and Development Headquarters, Lion Corporation, Odawara, Kanagawa, Japan.,Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, Kusatsu, Shiga, Japan
| | | | - Yoshihiro Urade
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
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Harada K, Aoki T, Kato K, Kawamura H, Inoue T, Aoki T, Uchiyama A, Sakamoto K, Ito S, Itoh M, Hayamizu T, Hatakeyama A, Hatanaka K, Wakasa T, Sakemi Y. Development of a Magneto-Optical Trap System of Francium Atoms for the Electron Electric-Dipole-Moment Search. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/691/1/012017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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43
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Harada K, Aoki T, Ezure S, Kato K, Hayamizu T, Kawamura H, Inoue T, Arikawa H, Ishikawa T, Aoki T, Uchiyama A, Sakamoto K, Ito S, Itoh M, Ando S, Hatakeyama A, Hatanaka K, Imai K, Murakami T, Nataraj HS, Shimizu Y, Sato T, Wakasa T, Yoshida HP, Sakemi Y. Laser frequency locking with 46 GHz offset using an electro-optic modulator for magneto-optical trapping of francium atoms. Appl Opt 2016; 55:1164-1169. [PMID: 26906392 DOI: 10.1364/ao.55.001164] [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: 06/05/2023]
Abstract
We demonstrate frequency offset locking between two laser sources using a waveguide-type electro-optic modulator (EOM) with 10th-order sidebands for magneto-optical trapping of Fr atoms. The frequency locking error signal was successfully obtained by performing delayed self-homodyne detection of the beat signal between the repumping frequency and the 10th-order sideband component of the trapping light. Sweeping the trapping-light and repumping-light frequencies with keeping its frequency difference of 46 GHz was confirmed over 1 GHz by monitoring the Doppler absorption profile of I₂. This technique enables us to search for a resonance frequency of magneto-optical trapping of Fr.
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44
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Kawamura H, Ando S, Aoki T, Arikawa H, Harada K, Hayamizu T, Inoue T, Ishikawa T, Itoh M, Kato K, Köhler L, Sakamoto K, Uchiyama A, Sakemi Y. Transportation of a radioactive ion beam for precise laser-trapping experiments. Rev Sci Instrum 2016; 87:02B921. [PMID: 26932093 DOI: 10.1063/1.4935013] [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: 06/05/2023]
Abstract
Francium is the heaviest species among the alkali elements. Due to its properties, francium is said to be of advantage in measurements of tiny observations, such as atomic parity violation and electric dipole moment. Before executing experiments with francium, it must be produced artificially because it is one of the most unstable elements. We produced francium with the nuclear fusion reaction of an oxygen beam and gold target, ionized the produced francium through a thermal ionization process, and extracted the ion with electrostatic fields. However, the thermal ionization process is known to ionize not only an objective atom but also other atomic species. Therefore, a Wien filter was installed to analyze the composition of the ion beam and purify the beam. This allowed us to improve the beam purity from ∼10(-6) to ∼10(-3).
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Affiliation(s)
- Hirokazu Kawamura
- Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - S Ando
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - T Aoki
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - H Arikawa
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - K Harada
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - T Hayamizu
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - T Inoue
- Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - T Ishikawa
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - M Itoh
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - K Kato
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - L Köhler
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - K Sakamoto
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - A Uchiyama
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Y Sakemi
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
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45
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Uchiyama A, Ozeki K, Higurashi Y, Kidera M, Komiyama M, Nakagawa T. Control system renewal for efficient operation in RIKEN 18 GHz electron cyclotron resonance ion source. Rev Sci Instrum 2016; 87:02A722. [PMID: 26931940 DOI: 10.1063/1.4934614] [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: 06/05/2023]
Abstract
A RIKEN 18 GHz electron cyclotron resonance ion source (18 GHz ECRIS) is used as an external ion source at the Radioactive Ion Beam Factory (RIBF) accelerator complex to produce an intense beam of medium-mass heavy ions (e.g., Ca and Ar). In most components that comprise the RIBF, the control systems (CSs) are integrated by the Experimental Physics and Industrial Control System (EPICS). On the other hand, a non-EPICS-based system has hardwired controllers, and it is used in the 18 GHz ECRIS CS as an independent system. In terms of efficient and effective operation, the 18 GHz ECRIS CS as well as the RIBF CS should be renewed using EPICS. Therefore, we constructed an 18 GHz ECRIS CS by using programmable logic controllers with embedded EPICS technology. In the renewed system, an operational log system was developed as a new feature, for supporting of the 18 GHz ECRIS operation.
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Affiliation(s)
- A Uchiyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Ozeki
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Y Higurashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Kidera
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Komiyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Nakagawa
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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46
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Nakamura Y, Monoi N, Kimura E, Sano T, Midorikawa T, Uchiyama A, Murakoshi M, Sugiyama K, Nishino H, Urade Y. Oral administration of Japanese sake yeast (Saccharomyces cerevisiae sake yeast) promotes non-rapid eye movement (NREM) sleep in mice, and improves the sleep quality in humans. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.1556] [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: 11/17/2022]
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47
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Morinaga M, Kon K, Saito H, Arai K, Kusama H, Uchiyama A, Yamashina S, Ikejima K, Watanabe S. Sodium 4-phenylbutyrate prevents murine dietary steatohepatitis caused by trans-fatty acid plus fructose. J Clin Biochem Nutr 2015; 57:183-91. [PMID: 26566303 PMCID: PMC4639592 DOI: 10.3164/jcbn.15-75] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 06/20/2015] [Accepted: 06/30/2015] [Indexed: 12/19/2022] Open
Abstract
Excess consumption of trans-fatty acid could increase the risk of non-alcoholic steatohepatitis (NASH); however, treatment targeting trans-fatty acid-induced NASH has not been examined. Here we focused on the influence of trans-fatty acid intake on endoplasmic reticulum (ER) stress in hepatocytes, so we investigated the effect of the chemical chaperone 4-phenylbutyric acid (PBA), on trans-fatty acid-caused steatohepatitis using diabetic KK-Ay mice. Elaidic acid (EA, trans-fatty acid) alone did not cause definitive liver injury. In contrast, EA plus low-dose fructose induced extensive apoptosis in hepatocytes with severe fat accumulation. EA plus fructose significantly increased ER stress markers such as glucose-regulated protein 78 (GRP78), eukaryotic initiation factor 2α (eIF2α) and phosphorylated c-jun N-terminal kinase (JNK), while PBA significantly reduced this response. In vitro, EA promoted expression of GRP78 and phosphorylation of eIF2α in primary-cultured hepatocytes. EA also increased hepatocellular susceptibility to low-dose tert-butyl hydroperoxide. Treatment with PBA significantly reduced these responses. In conclusion, EA potentiates susceptibly to non-hazardous dose of fructose, and increases ER and oxidative stress. PBA improved steatohepatitis induced by EA plus fructose through amelioration of ER stress. Therefore, ER stress-targeted therapy using a chemical chaperone is a promising novel strategy for trans-fatty acid-induced steatohepatitis.
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Affiliation(s)
- Maki Morinaga
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Kazuyoshi Kon
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Hiroaki Saito
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Kumiko Arai
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Hiromi Kusama
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Akira Uchiyama
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Shunhei Yamashina
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Sumio Watanabe
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
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Aoyama T, Matsumoto T, Uchiyama A, Kon K, Yamashina S, Suzuki S, Ikejima K, Yao T, Kuwatsuru R, Watanabe S. Recurrent severe acute hepatitis caused by hypereosinophilic syndrome associated with elevated serum immunoglobulin G4 levels. Clin J Gastroenterol 2014; 7:516-22. [PMID: 25491909 DOI: 10.1007/s12328-014-0532-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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] [Received: 06/22/2014] [Accepted: 10/04/2014] [Indexed: 12/11/2022]
Abstract
A 46-year-old male was admitted to our hospital with severe acute hepatitis, hypereosinophilia, and serum immunoglobulin G4 (IgG4) elevation. Plasma exchange was performed, and he was treated by prednisolone; however, his hepatitis recurred twice over the following twelve months. Transjuglar liver biopsy was performed at the third onset, which demonstrated extensive hepatocyte necrosis, congestion, and severe eosinophil infiltration. We diagnosed hypereosinophilic syndrome (HES)-related hepatitis. Although no cholangitis was detected by imaging and pathological diagnosis, IgG4-positive cells were detected in the liver and bone marrow. Furthermore, the elevation of serum IgG4 levels was associated with the eosinophil count and his clinical condition. After the addition of azathioprine to his treatment regimen, no reoccurrence was observed. IgG4-positive cells may have contributed to the severity and refractoriness of this recurrent acute HES-related hepatitis.
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Affiliation(s)
- Tomonori Aoyama
- Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo Bunkyo-ku, Tokyo, 113-8421, Japan,
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Itoh M, Ando S, Aoki T, Arikawa H, Ezure S, Harada K, Hayamizu T, Inoue T, Ishikawa T, Kato K, Kawamura H, Sakemi Y, Uchiyama A. Further improvement of the upper limit on the direct 3α decay from the Hoyle state in 12C. Phys Rev Lett 2014; 113:102501. [PMID: 25238351 DOI: 10.1103/physrevlett.113.102501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Indexed: 06/03/2023]
Abstract
The direct 3α decay branch from the 02+ state at Ex=7.65 MeV in 12C, which is known as the Hoyle state, is considered to affect the triple-α reaction rate strongly and to give crucial information on its structure. We have performed a high-precision measurement of the 3α decay from this state using the 12C(12C,3α)12C reaction at E12C=110 MeV. The branching ratio of the direct 3α decay was under the detection limit in the present experiment. By comparing with Monte Carlo simulations for three decay mechanisms as the sequential decay through the ground state of ^{8}Be, the direct decay with equal energies of three α particles, and the direct decay to the phase space uniformly, we have obtained the upper limit of 0.2% on the direct 3α decay.
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Affiliation(s)
- M Itoh
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - S Ando
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - T Aoki
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - H Arikawa
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - S Ezure
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - K Harada
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - T Hayamizu
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - T Inoue
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - T Ishikawa
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - K Kato
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - H Kawamura
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Y Sakemi
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - A Uchiyama
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Miyagi 980-8578, Japan
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50
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Takamura Y, Kitamura K, Iwamoto T, Nomura M, Ichiba Y, Murakoshi M, Uchiyama A, Manabe Y, Fujita S, Fujii N. PP001-SUN: Outstanding abstract: Ingestion of Panaxatriol Ameliorates Insulin Resistance in KK-AY Mice by Promoting Insulin Dependent Glucose Uptake in Skeletal Muscle. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50043-x] [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: 10/24/2022]
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