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Takano Y, Okajima I, Ando T, Iwano S, Inoue Y. Presenteeism and sleep duration on workdays and days off. Occup Med (Lond) 2024:kqae028. [PMID: 38682567 DOI: 10.1093/occmed/kqae028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024] Open
Abstract
BACKGROUND Presenteeism refers to being present at work but experiencing reduced productivity due to health problems, and has been known to be related to sleep loss. Workers commonly sleep longer on days off than on workdays, and presenteeism may be reduced with extended sleep on days off. AIMS This study aimed to determine the association between sleep duration both on workdays and days off and presenteeism. METHODS The participants were 1967 workers who engaged in work for 5 days and rested for 2 days weekly. Sleep duration was classified into less than 6 hours (short; S), 6-8 hours (medium; M), and 9 hours or longer (long; L), for workdays and days off, respectively. Presenteeism was assessed using the World Health Organization Health and Work Performance Questionnaire. RESULTS On both workdays and days off, compared to medium sleep duration, short sleep duration was significantly associated with increased odds of presenteeism. The odds of presenteeism were significantly increased for S-S (odds ratio [OR] 2.17, 95% confidence interval [CI]1.40-3.37), S-M (OR 1.59, 95% CI 1.14-2.22), S-L (OR 2.71, 95% CI 1.05-7.00), and M-S (OR 6.82, 95% CI 2.71-17.17) combined sleep duration for workdays and days off, respectively, compared to an M-M (reference). CONCLUSIONS Sleep loss on workdays cannot be compensated for with longer sleep on days off. This study suggests that sufficient sleep duration on both workdays and days off is important for reducing presenteeism.
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Affiliation(s)
- Y Takano
- Department of Somnology, Tokyo Medical University, Tokyo 151-0053, Japan
- Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo 151-0053, Japan
| | - I Okajima
- Department of Psychological Counseling, Faculty of Humanities, Tokyo Kasei University, Tokyo 173-8602, Japan
| | - T Ando
- Department of Psychology, Faculty of Human Culture and Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - S Iwano
- Cognitive Behavioral Consulting Office, Hokkaido 060-0061, Japan
- Center for Medical Education and Career Development, Fukushima Medical University, Fukushima 960-1295, Japan
| | - Y Inoue
- Department of Somnology, Tokyo Medical University, Tokyo 151-0053, Japan
- Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo 151-0053, Japan
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2
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Shimoda T, Takano Y. Validation of bioimpedance phase angle in lower extremity of male patients with chronic spinal cord injury. J Phys Ther Sci 2024; 36:63-68. [PMID: 38304153 PMCID: PMC10830158 DOI: 10.1589/jpts.36.63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 11/06/2023] [Indexed: 02/03/2024] Open
Abstract
[Purpose] This study aimed to evaluate the relationship between lower extremity phase angle and muscle thickness/echo intensity in males with chronic spinal cord injury. It also compared bioelectrical impedance analysis measurements to investigate skeletal muscle degeneration between individuals with spinal cord injury and healthy controls. [Participants and Methods] This cross-sectional study included 12 male patients with chronic spinal cord injury and 14 healthy male controls. We used bioelectrical impedance analysis and ultrasonography to measure the lower extremity phase angle and muscle thickness/echo intensity of the rectus femoris muscle, respectively. We also compared the bioelectrical impedance analysis measurements between individuals with spinal cord injury and healthy controls. [Results] Lower extremity phase angle was strongly correlated with muscle thickness and echo intensity of the rectus femoris muscle in individuals with spinal cord injury. All measures differed significantly between individuals with spinal cord injury and healthy controls. [Conclusion] These findings suggest that lower extremity phase angle is a valuable skeletal muscle indicator in spinal cord injury. Furthermore, bioelectrical impedance analysis revealed degeneration of the lower extremity skeletal muscles in individuals with chronic spinal cord injury.
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Affiliation(s)
- Takeyoshi Shimoda
- Department of Physical Therapy, School of Health Sciences at
Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-shi, Fukuoka
831-8501, Japan
| | - Yoshio Takano
- Department of Physical Therapy, School of Health Sciences at
Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-shi, Fukuoka
831-8501, Japan
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3
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Omoto M, Tsukada Y, Hashida R, Matsuse H, Tajima H, Iwanaga S, Takano Y, Nago T, Tagawa Y, Shiba N. Effect of Cycling Exercise Resisting Electrically Stimulated Antagonist Muscle Contractions in Healthy Males. Metabolites 2023; 13:metabo13050604. [PMID: 37233645 DOI: 10.3390/metabo13050604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/26/2023] [Accepted: 03/31/2023] [Indexed: 05/27/2023] Open
Abstract
A hybrid training system (HTS) combining antagonist muscle electrical stimulation and voluntary muscle contraction has been developed using eccentric antagonist muscle contractions with electrical stimulation as resistance to voluntary muscle contractions. We devised an exercise method using HTS combined with a cycle ergometer (HCE). The purpose of this study was to compare the muscle strength, muscle volume, aerobic functions and lactate metabolism of HCE and a volitional cycle ergometer (VCE). A total of 14 male participants performed exercise on a bicycle ergometer for 30 min per session, 3 times per week for 6 weeks. We divided 14 participants into an HCE group (7 participants) and a VCE group (7 participants). The workload was set at 40% of each participant's peak oxygen uptake (V.O2peak). Electrodes were placed over each motor point on the quadriceps and hamstrings. The V.O2peak and anaerobic threshold significantly increased before and after training when using HCE rather than VCE. The HCE group had significantly increased extension and flexion muscle strength at 180 degrees/s in post-training measurements over pre-training measurements. Knee flexion muscle strength at 180 degrees/s tended to increase in the HCE group compared to the VCE group. The quadricep muscle cross-sectional area was significantly increased in the HCE group compared to the VCE group. Additionally, the HCE group had significantly decreased maximal lactate, measured every 5 min during exercise at the end of study, between pre and post-training. Thus, HCE may be a more effective training method for muscle strength, muscle mass and aerobic functions at 40% of each participant's V.O2peak than conventional cycling exercise. HCE could be applied not only as aerobic exercise but also as resistance training.
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Affiliation(s)
- Masayuki Omoto
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Yuya Tsukada
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Ryuki Hashida
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Hiroo Matsuse
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Hiroshi Tajima
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Sohei Iwanaga
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Yoshio Takano
- Department of Physical Therapy, School of Health Sciences, International University of Health and Welfare, Okawa 831-8501, Fukuoka, Japan
| | - Takeshi Nago
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Yoshihiko Tagawa
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Naoto Shiba
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
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4
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Oka S, Takano Y, Matsuse H, Tagawa Y, Shiba N. A Standing Low-frequency Vibration Exercise Device for Improving Balance in Community-dwelling Older Adults: A Single-blind Randomized Controlled Trial. Phys Ther Res 2023; 26:24-31. [PMID: 37181485 PMCID: PMC10169311 DOI: 10.1298/ptr.e10192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 12/13/2022] [Indexed: 02/08/2023]
Abstract
OBJECTIVE This study aimed to compare the effects of the standing low-frequency vibration exercise device (SLVED) and walking training on balance ability on an unstable surface in community-dwelling elderly people. METHODS Thirty-eight older adults were randomly allocated to the SLVED sessions: the intervention group (n = 19), and the walking sessions: the control group (n = 19). Each group session lasted 20 min and was performed twice a week for 12 weeks. Standing balance was assessed by the change in center-of-gravity sway of the participant standing on foam rubber with eyes open (EO) and eyes closed (EC). The primary outcome measures were the root mean square (RMS) values of the center of foot pressure in the mediolateral and anteroposterior directions and the RMS area. Secondary outcome measures were the results of the 10-m walking time test (10 MWT), five-times sit-to-stand (5T-STS) test, and timed up-and-go (TUG) test. RESULTS Analysis of variance showed a significant group × time interaction for the TUG test. Significant improvements were observed in Y-RMS for EO condition; RMS, X-RMS, Y-RMS, and RMS area for EC condition; and 10 MWT, 5T-STS test, and TUG test for the main effect of the time factor. CONCLUSION SLVED for intervention in community-dwelling older adults showed a greater improvement than walking training in the TUG test. In addition, SLVED improved the Y-RMS for the EO condition on foam rubber; RMS, X-RMS, Y-RMS, and RMS area for the EC condition on foam rubber in standing balance; and the 10 MWT and 5T-STS test, suggesting that it has similar effects to walking training.
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Affiliation(s)
- Shinichiro Oka
- Department of Physical Therapy, Faculty of Rehabilitation, Reiwa Health Sciences University, Japan
| | - Yoshio Takano
- Department of Physical Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare, Japan
| | - Hiroo Matsuse
- Department of Orthopedics, Kurume University School of Medicine, Japan
| | - Yoshihiko Tagawa
- Department of Orthopedics, Kurume University School of Medicine, Japan
| | - Naoto Shiba
- Department of Orthopedics, Kurume University School of Medicine, Japan
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5
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Kato H, Nemoto K, Shimizu M, Abe A, Asai S, Ishihama N, Matsuoka S, Daimon T, Ojika M, Kawakita K, Onai K, Shirasu K, Yoshida M, Ishiura M, Takemoto D, Takano Y, Terauchi R. Recognition of pathogen-derived sphingolipids in Arabidopsis. Science 2022; 376:857-860. [PMID: 35587979 DOI: 10.1126/science.abn0650] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In plants, many invading microbial pathogens are recognized by cell-surface pattern recognition receptors, which induce defense responses. Here, we show that the ceramide Phytophthora infestans-ceramide D (Pi-Cer D) from the plant pathogenic oomycete P. infestans triggers defense responses in Arabidopsis. Pi-Cer D is cleaved by an Arabidopsis apoplastic ceramidase, NEUTRAL CERAMIDASE 2 (NCER2), and the resulting 9-methyl-branched sphingoid base is recognized by a plasma membrane lectin receptor-like kinase, RESISTANT TO DFPM-INHIBITION OF ABSCISIC ACID SIGNALING 2 (RDA2). 9-Methyl-branched sphingoid base is specific to microbes and induces plant immune responses by physically interacting with RDA2. Loss of RDA2 or NCER2 function compromised Arabidopsis resistance against an oomycete pathogen. Thus, we elucidated the recognition mechanisms of pathogen-derived lipid molecules in plants.
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Affiliation(s)
- H Kato
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - K Nemoto
- Iwate Biotechnology Research Center, Kitakami 024-0003, Japan
| | - M Shimizu
- Iwate Biotechnology Research Center, Kitakami 024-0003, Japan
| | - A Abe
- Iwate Biotechnology Research Center, Kitakami 024-0003, Japan
| | - S Asai
- RIKEN Center for Sustainable Resource Science, Yokohama 230-0045, Japan
| | - N Ishihama
- RIKEN Center for Sustainable Resource Science, Yokohama 230-0045, Japan
| | - S Matsuoka
- RIKEN Center for Sustainable Resource Science, Wako 351-0198, Japan
| | - T Daimon
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - M Ojika
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - K Kawakita
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - K Onai
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - K Shirasu
- RIKEN Center for Sustainable Resource Science, Yokohama 230-0045, Japan.,Graduate School of Science, The University of Tokyo, Tokyo 113-8654, Japan
| | - M Yoshida
- RIKEN Center for Sustainable Resource Science, Wako 351-0198, Japan.,Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - M Ishiura
- Graduate School of Science, Nagoya University, Nagoya 464-8601, Japan
| | - D Takemoto
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Y Takano
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - R Terauchi
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan.,Iwate Biotechnology Research Center, Kitakami 024-0003, Japan
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6
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Tachibana S, Sawada H, Okazaki R, Takano Y, Sakamoto K, Miura YN, Okamoto C, Yano H, Yamanouchi S, Michel P, Zhang Y, Schwartz S, Thuillet F, Yurimoto H, Nakamura T, Noguchi T, Yabuta H, Naraoka H, Tsuchiyama A, Imae N, Kurosawa K, Nakamura AM, Ogawa K, Sugita S, Morota T, Honda R, Kameda S, Tatsumi E, Cho Y, Yoshioka K, Yokota Y, Hayakawa M, Matsuoka M, Sakatani N, Yamada M, Kouyama T, Suzuki H, Honda C, Yoshimitsu T, Kubota T, Demura H, Yada T, Nishimura M, Yogata K, Nakato A, Yoshitake M, Suzuki AI, Furuya S, Hatakeda K, Miyazaki A, Kumagai K, Okada T, Abe M, Usui T, Ireland TR, Fujimoto M, Yamada T, Arakawa M, Connolly HC, Fujii A, Hasegawa S, Hirata N, Hirata N, Hirose C, Hosoda S, Iijima Y, Ikeda H, Ishiguro M, Ishihara Y, Iwata T, Kikuchi S, Kitazato K, Lauretta DS, Libourel G, Marty B, Matsumoto K, Michikami T, Mimasu Y, Miura A, Mori O, Nakamura-Messenger K, Namiki N, Nguyen AN, Nittler LR, Noda H, Noguchi R, Ogawa N, Ono G, Ozaki M, Senshu H, Shimada T, Shimaki Y, Shirai K, Soldini S, Takahashi T, Takei Y, Takeuchi H, Tsukizaki R, Wada K, Yamamoto Y, Yoshikawa K, Yumoto K, Zolensky ME, Nakazawa S, Terui F, Tanaka S, Saiki T, Yoshikawa M, Watanabe S, Tsuda Y. Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth. Science 2022; 375:1011-1016. [PMID: 35143255 DOI: 10.1126/science.abj8624] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Hayabusa2 spacecraft investigated the C-type (carbonaceous) asteroid (162173) Ryugu. The mission performed two landing operations to collect samples of surface and subsurface material, the latter exposed by an artificial impact. We present images of the second touchdown site, finding that ejecta from the impact crater was present at the sample location. Surface pebbles at both landing sites show morphological variations ranging from rugged to smooth, similar to Ryugu's boulders, and shapes from quasi-spherical to flattened. The samples were returned to Earth on 6 December 2020. We describe the morphology of >5 grams of returned pebbles and sand. Their diverse color, shape, and structure are consistent with the observed materials of Ryugu; we conclude that they are a representative sample of the asteroid.
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Affiliation(s)
- S Tachibana
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Sawada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R Okazaki
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - Y Takano
- Biogeochemistry Research Center, Japan Agency for Marine-Earth Science and Technology, Kanagawa 237-0061, Japan
| | - K Sakamoto
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y N Miura
- Earthquake Research Institute, The University of Tokyo, Tokyo 113-0032, Japan
| | - C Okamoto
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H Yano
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Yamanouchi
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - P Michel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - Y Zhang
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - S Schwartz
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA.,Planetary Science Institute, Tucson, AZ 85719, USA
| | - F Thuillet
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - H Yurimoto
- Department of Earth and Planetary Sciences, Hokkaido University, Sapporo 060-0810, Japan
| | - T Nakamura
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - T Noguchi
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan.,Division of Earth and Planetary Sciences, Kyoto University, Kyoto, Japan
| | - H Yabuta
- Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - H Naraoka
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - A Tsuchiyama
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu 525-8577, Japan.,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - N Imae
- Polar Science Resources Center, National Institute of Polar Research, Tokyo 190-8518, Japan
| | - K Kurosawa
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - A M Nakamura
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - K Ogawa
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - S Sugita
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Morota
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - R Honda
- Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - S Kameda
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - E Tatsumi
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Instituto de Astrofísica de Canarias, University of La Laguna, E-38205 Tenerife, Spain
| | - Y Cho
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Yoshioka
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Matsuoka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Sakatani
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - M Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Kouyama
- Information Technology and Human Factors, National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan
| | - H Suzuki
- Department of Physics, Meiji University, Kawasaki 214-8571, Japan
| | - C Honda
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Yoshimitsu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Kubota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Demura
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Yada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Nishimura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yogata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Nakato
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshitake
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A I Suzuki
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan.,Department of Economics, Toyo University, Tokyo 112-8606, Japan
| | - S Furuya
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Hatakeda
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan
| | - A Miyazaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Kumagai
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan
| | - T Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Abe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Usui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T R Ireland
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - M Fujimoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Yamada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Arakawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H C Connolly
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA.,Department of Geology, Rowan University, Glassboro, NJ 08028, USA
| | - A Fujii
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Hasegawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Hirata
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - N Hirata
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - C Hirose
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Iijima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Ikeda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ishiguro
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Y Ishihara
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - T Iwata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - S Kikuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - K Kitazato
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - D S Lauretta
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA
| | - G Libourel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - B Marty
- Université de Lorraine, Centre national de la recherche scientifique, Centre de Recherches Pétrographiques et Géochimiques, F-54000 Nancy, France
| | - K Matsumoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Michikami
- Department of Mechanical Engineering, Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Miura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - O Mori
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | | | - N Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - A N Nguyen
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - L R Nittler
- Carnegie Institution for Science, Washington, DC 20015, USA
| | - H Noda
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - R Noguchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Science, Niigata University, Niigata 950-2181, Japan
| | - N Ogawa
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - G Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - H Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Shimada
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Shirai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Soldini
- Department of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool L69 3BX, UK
| | | | - Y Takei
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - R Tsukizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Wada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - K Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - K Yumoto
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - M E Zolensky
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - S Nakazawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - F Terui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Saiki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - S Watanabe
- Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Aeronautics and Astronautics, The University of Tokyo, Tokyo 113-0033, Japan
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7
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Iwanaga S, Hashida R, Takano Y, Bekki M, Nakano D, Omoto M, Nago T, Kawaguchi T, Matsuse H, Torimura T, Shiba N. Hybrid Training System Improves Insulin Resistance in Patients with Nonalcoholic Fatty Liver Disease: A Randomized Controlled Pilot Study. TOHOKU J EXP MED 2021; 252:23-32. [PMID: 32863329 DOI: 10.1620/tjem.252.23] [Citation(s) in RCA: 9] [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: 11/18/2022]
Abstract
Insulin resistance is associated with the progression of nonalcoholic fatty liver disease (NAFLD). Insulin resistance is regulated by various cytokines, including interleukin-6 (IL-6), a proinflammatory myokine, and selenoprotein P (SeP), a liver-derived secretory hepatokine. High levels of IL-6 and/or SeP have been shown to contribute to insulin resistance, and exercise is a first-line therapy for NAFLD. We have developed a hybrid training system (HTS): a neuromuscular electrical stimulation device to enhance exercise results. We aimed to investigate the effects of HTS on insulin resistance as well as serum IL-6 and SeP in patients with NAFLD. This is a randomized, single-blind (assessor), controlled trial. Subjects with NAFLD walked on a treadmill with or without HTS (9 subjects each) for 30 minutes three times a week for six weeks (HTS vs. control group; median age 45 vs. 45; male/female 5/4 vs. 6/3). We examined subjects before the first session and at the end of the final session. Serum SeP levels were measured by ELISA which measures the fragment of SeP. In the HTS group, HOMA-IR values were significantly reduced compared to the control group (Δ-0.71 vs. Δ0.05; P < 0.05). IL-6 and SeP levels in serum were also significantly reduced compared to that of the control group (IL-6; Δ-0.6 vs. Δ0.29 pg/mL; P < 0.05, SeP; Δ-1288.5 vs. Δ-435.4 ng/mL; P < 0.05, respectively). In conclusion, we propose that HTS improves insulin resistance by reducing serum IL-6 and SeP levels in patients with NAFLD.
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Affiliation(s)
- Sohei Iwanaga
- Division of Rehabilitation, Kurume University Hospital.,Department of Orthopedics, Kurume University School of Medicine
| | - Ryuki Hashida
- Division of Rehabilitation, Kurume University Hospital.,Department of Orthopedics, Kurume University School of Medicine
| | - Yoshio Takano
- Department of Physical Therapy School of Health Sciences at Fukuoka, International University Health and Welfare
| | - Masafumi Bekki
- Division of Rehabilitation, Kurume University Hospital.,Department of Orthopedics, Kurume University School of Medicine
| | - Dan Nakano
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Masayuki Omoto
- Division of Rehabilitation, Kurume University Hospital.,Department of Orthopedics, Kurume University School of Medicine
| | - Takeshi Nago
- Division of Rehabilitation, Kurume University Hospital.,Department of Orthopedics, Kurume University School of Medicine
| | - Takumi Kawaguchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Hiroo Matsuse
- Division of Rehabilitation, Kurume University Hospital.,Department of Orthopedics, Kurume University School of Medicine
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Naoto Shiba
- Division of Rehabilitation, Kurume University Hospital.,Department of Orthopedics, Kurume University School of Medicine
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8
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Bekki M, Matsuse H, Hashida R, Nago T, Iwanaga S, Kawaguchi T, Takano Y, Shiba N. Electrically Stimulated Eccentric Contractions during Walking Increases Oxygen Uptake. Kurume Med J 2021; 66:93-100. [PMID: 34135203 DOI: 10.2739/kurumemedj.ms662008] [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: 11/23/2022]
Abstract
Neuromuscular electrical stimulation (NMES) is used to increase not only muscle strength but also whole-body metabolism. A hybrid training system (HTS) in which NMES is synchronized to voluntary exercise by an articular motion sensor may increase exercise load during aerobic walking exercise. We assessed the metabolic cost during walking exercise (5 minutes at 4 km/h and 5.6 km/h) on a treadmill simultaneously combined with HTS (HTSW) or without HTS (CON). We evaluated oxygen uptake ( VO·2) and heart rate (HR) during HTSW or CON on different days in fifteen subjects. The values ofVO·2 during HTSW at 4 km/h and 5.6 km/h were signifi cantly greater than those during CON (16.6 ± 1.85 ml/min/kg vs 15.3 ± 1.48 ml/min/kg; p < 0.05, 21.0 ± 2.17 ml/min/kg vs 19.4 ± 2.13 ml/min/kg; p < 0.01, respectively). The values of HR during HTSW at 4 km/h, 5.6 km/h were significantly greater than those during CON (106.7 ± 8.1 bpm vs 101.7 ± 10.3 bpm; p < 0.05, 126.5 ± 11.1 bpm vs 121.5 ± 12.5 bpm; p < 0.05, respectively). HTS added significantly to the exercise load by 8.3 ± 12.0% or 9.1 ± 9.9% during aerobic walking exercise at 4 km/h or 5.6 km/h, respectively. HTS might be useful for health promotion by increasing metabolic cost during aerobic walking exercise without increasing the perceived difficulty.
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Affiliation(s)
| | - Hiroo Matsuse
- Division of Rehabilitation, Kurume University Hospital
| | - Ryuki Hashida
- Division of Rehabilitation, Kurume University Hospital
| | - Takeshi Nago
- Division of Rehabilitation, Kurume University Hospital
| | - Sohei Iwanaga
- Division of Rehabilitation, Kurume University Hospital
| | - Takumi Kawaguchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine
| | - Yoshio Takano
- Department of Physical Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare
| | - Naoto Shiba
- Division of Rehabilitation, Kurume University Hospital
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9
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Hashida R, Takano Y, Matsuse H, Kudo M, Bekki M, Omoto M, Nago T, Kawaguchi T, Torimura T, Shiba N. Electrical Stimulation of the Antagonist Muscle During Cycling Exercise Interval Training Improves Oxygen Uptake and Muscle Strength. J Strength Cond Res 2021; 35:111-117. [PMID: 29278576 DOI: 10.1519/jsc.0000000000002393] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ABSTRACT Hashida, R, Takano, Y, Matsuse, H, Kudo, M, Bekki, M, Omoto, M, Nago, T, Kawaguchi, T, Torimura, T, and Shiba, N. Electrical stimulation of the antagonist muscle during cycling exercise interval training improves oxygen uptake and muscle strength. J Strength Cond Res 35(1): 111-117, 2021-A hybrid training system (HTS) is a resistance exercise method that combines voluntary concentric muscle contractions and electrically stimulated eccentric muscle contractions. We devised an exercise technique using HTS on cycle ergometer (HCE). The purpose of this study was to compare cardiorespiratory function and muscle strength when cycling exercise is combined with electrical stimulation over an extended period. Twenty-nine healthy young men were divided into an HCE group (n = 14) and a volitional cycle ergometer (VCE alone) group (n = 15). All subjects performed 30-minute cycling exercise interval training sessions 3 times a week for 6 weeks. The V̇o2peak of both groups significantly increased compared with the pretraining period (HCE group: from 31.3 ± 4.4 [ml·kg-1·min-1] pretraining to 37.6 ± 6.7 [ml·kg-1·min-1] post-training [p = 0.0024] and VCE group: from 34.0 ± 7.1 [ml·kg-1·min-1] pretraining to 38.4 ± 8.2 [ml·kg-1·min-1] [p = 0.0057]). After the training, there was no significant difference of changes in V̇o2peak between the HCE and the VCE groups (p = 0.7107). In the VCE group, the maximal isokinetic torque of knee extension (60°·s-1) post-training did not significantly increase compared with the pretraining period (VCE group: from 2.4 ± 0.5 [N·m·kg-1] pretraining to 2.5 ± 0.4 [N·m·kg-1] [p = 0.4543]). By contrast, in the HCE group, the maximal isokinetic torque of knee extension (60°·s-1) post-training significantly increased compared with pretraining period (HCE group: from 2.5 ± 0.3 [N·m·kg-1] pretraining to 2.8 ± 0.3 [N·m·kg-1] [p < 0.0001]). The change in knee extension torque was significantly greater for the HCE group than for the VCE group (p = 0.0307). In conclusion, cardiopulmonary function and knee extension strength were improved by the use of HCE.
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Affiliation(s)
- Ryuki Hashida
- Division of Rehabilitation, Kurume University Hospital, Kurume, Japan.,Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan
| | - Yoshio Takano
- Department of Physical Therapy, School of Health Sciences, International University Health and Welfare, Enokizu, Okawa, Japan; and
| | - Hiroo Matsuse
- Division of Rehabilitation, Kurume University Hospital, Kurume, Japan.,Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan
| | - Mei Kudo
- Division of Rehabilitation, Kurume University Hospital, Kurume, Japan
| | - Masafumi Bekki
- Division of Rehabilitation, Kurume University Hospital, Kurume, Japan.,Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan
| | - Masayuki Omoto
- Division of Rehabilitation, Kurume University Hospital, Kurume, Japan.,Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan
| | - Takeshi Nago
- Division of Rehabilitation, Kurume University Hospital, Kurume, Japan.,Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan
| | - Takumi Kawaguchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Takuji Torimura
- Department of Physical Therapy, School of Health Sciences, International University Health and Welfare, Enokizu, Okawa, Japan; and
| | - Naoto Shiba
- Division of Rehabilitation, Kurume University Hospital, Kurume, Japan.,Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan
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10
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Tsukada Y, Matsuse H, Shinozaki N, Takano Y, Nago T, Shiba N. Combined Application of Electrically Stimulated Antagonist Muscle Contraction and Volitional Muscle Contraction Prevents Muscle Strength Weakness and Promotes Physical Function Recovery After Total Knee Arthroplasty: A Randomized Controlled Trial. Kurume Med J 2020; 65:145-154. [PMID: 31723080 DOI: 10.2739/kurumemedj.ms654007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Osteoarthritis of the knee (KOA) is the most common cause of disability in both the United States and in Japan. The Hybrid training system (HTS) has been developed as a resistance exercise method combining electrical stimulation with voluntary exercise. The purpose of the present study is to compare the effects of a conventional rehabilitation program with or without HTS on knee muscle strength and physical function after Total knee arthroplasty (TKA). METHODS We conducted a 12-week randomized controlled trial, using standard rehabilitation (the control group, n = 27) or standard rehabilitation plus HTS (the HTS group, n= 26), in 53 female patients after TKA. The HTS group underwent HTS three times per week for twelve weeks after TKA. Muscle strength, thigh circumference, physical functional testing, QOL and knee pain were assessed before surgery, 6 and 12 weeks after TKA. RESULTS There was a significant decrease in quadriceps strength and thigh circumference on the operative side in the control group, but not in the HTS group at 6 weeks. Hamstring strength on the operative side in the HTS group significantly increased and thigh circumference was bigger than in the control group at 12 weeks. Physical function improved at 6 weeks in the HTS group, but not in the control group. Knee pain significantly improved in both groups at 6 weeks. CONCLUSIONS HTS was effective in preventing quadriceps weakness and in improving physical function and QOL after TKA.
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Affiliation(s)
- Yuya Tsukada
- Division of Rehabilitation, Kurume University Hospital
| | - Hiroo Matsuse
- Division of Rehabilitation, Kurume University Hospital
| | | | - Yoshio Takano
- Department of Physical Therapy, School of Health Sciences at Fukuoka, International University Health and Welfare
| | - Takeshi Nago
- Division of Rehabilitation, Kurume University Hospital
| | - Naoto Shiba
- Division of Rehabilitation, Kurume University Hospital
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11
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Gan P, Tsushima A, Hiroyama R, Narusaka M, Takano Y, Narusaka Y, Kawaradani M, Damm U, Shirasu K. Colletotrichum shisoi sp. nov., an anthracnose pathogen of Perilla frutescens in Japan: molecular phylogenetic, morphological and genomic evidence. Sci Rep 2019; 9:13349. [PMID: 31527702 PMCID: PMC6746953 DOI: 10.1038/s41598-019-50076-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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] [Received: 01/11/2019] [Accepted: 09/05/2019] [Indexed: 11/09/2022] Open
Abstract
Species of the fungal genus Colletotrichum are among the most devastating pathogens of agricultural crops in the world. Based on DNA sequence data (ITS, GAPDH, CHS-1, ACT, TUB2) and morphology, we revealed Colletotrichum isolates infecting the oil crop Perilla frutescens, commonly known as shiso, to represent a previously unknown species of the C. destructivum species complex and described it as C. shisoi. We found that C. shisoi appears to be able to adopt a hemibiotrophic lifestyle, characterised by the formation of biotrophic hyphae followed by severe necrotic lesions on P. frutescens, but is less virulent on Arabidopsis, compared to its close relative C. higginsianum which also belongs to the C. destructivum species complex. The genome of C. shisoi was sequenced, annotated and its predicted proteome compared with four other Colletotrichum species. The predicted proteomes of C. shisoi and C. higginsianum, share many candidate effectors, which are small, secreted proteins that may contribute to infection. Interestingly, C. destructivum species complex-specific secreted proteins showed evidence of increased diversifying selection which may be related to their host specificities.
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Affiliation(s)
- P Gan
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
| | - A Tsushima
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan.,Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - R Hiroyama
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
| | - M Narusaka
- Research Institute for Biological Sciences, Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries, Okayama, Japan
| | - Y Takano
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Y Narusaka
- Research Institute for Biological Sciences, Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries, Okayama, Japan
| | - M Kawaradani
- Research Institute of Environment, Agriculture and Fisheries, Osaka, Japan
| | - U Damm
- Senckenberg Museum of Natural History Görlitz, 02806, Görlitz, Germany
| | - K Shirasu
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan. .,Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan.
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12
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Gan P, Tsushima A, Narusaka M, Narusaka Y, Takano Y, Kubo Y, Shirasu K. Genome Sequence Resources for Four Phytopathogenic Fungi from the Colletotrichum orbiculare Species Complex. Mol Plant Microbe Interact 2019; 32:1088-1090. [PMID: 30893003 DOI: 10.1094/mpmi-12-18-0352-a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Colletotrichum orbiculare species complex fungi are hemibiotrophic plant pathogens that cause anthracnose of field crops and weeds. Members of this group have genomes that are remarkably expanded relative to other Colletotrichum fungi and compartmentalized into AT-rich, gene-poor and GC-rich, gene-rich regions. Here, we present an updated version of the C. orbiculare genome, as well as draft genomes of three other members from the C. orbiculare species complex: the alfalfa pathogen C. trifolii, the prickly mallow pathogen C. sidae, and the burweed pathogen C. spinosum. The data reported here will be important for comparative genomics analyses to identify factors that play a role in the evolution and maintenance of the expanded, compartmentalized genomes of these fungi, which may contribute to their pathogenicity.
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Affiliation(s)
- P Gan
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
| | - A Tsushima
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
- Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - M Narusaka
- Research Institute for Biological Sciences Okayama, Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries, Okayama, Japan
| | - Y Narusaka
- Research Institute for Biological Sciences Okayama, Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries, Okayama, Japan
| | - Y Takano
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Y Kubo
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - K Shirasu
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
- Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
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13
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Özçelik B, Çetin G, Gürsul M, Madre M, Sotelo A, Adachi S, Takano Y. Low temperature thermoelectric properties of K-substituted Bi2Sr2Co2Oy ceramics prepared via laser floating zone technique. Ann Ital Chir 2019. [DOI: 10.1016/j.jeurceramsoc.2019.04.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Kobayashi H, Shinjoh M, Sudo K, Kato S, Morozumi M, Koinuma G, Takahashi T, Takano Y, Tamura Y, Hasegawa N. Nosocomial infection by human bocavirus and human rhinovirus among paediatric patients with respiratory risks. J Hosp Infect 2019; 103:341-348. [PMID: 31078633 DOI: 10.1016/j.jhin.2019.05.002] [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: 02/08/2019] [Accepted: 05/01/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND Nosocomial infections by respiratory viruses undetected by rapid tests are not often diagnosed. For paediatric patients with background diseases, nosocomial infection could be fatal. AIM To determine the relationship between developing symptoms by respiratory viruses undetectable by rapid tests and respiratory risks and to improve the management of infection control. METHODS Two episodes of nosocomial infection by human bocavirus (HBoV) and human rhinovirus (HRV) were retrospectively investigated in a tertiary hospital paediatric ward in Japan. Viruses were identified by polymerase chain reaction to determine infection control management. When viruses of the same species were detected from different patients, the virus homology was investigated. The relationship between respiratory risks and developing symptoms was statistically investigated. FINDINGS Three and four patients with respiratory risks in the HBoV and HRV outbreaks, respectively, developed respiratory symptoms. The nucleotide sequences of two patients in the HBoV outbreak and all four patients in the HRV outbreak were phylogenetically close. In both outbreaks, the patients with respiratory risks developed significantly more symptoms than those without any risk (P = 0.035 and 0.018, respectively). After the patients with respiratory infection were separated from those with respiratory risks, no additional nosocomial infection occurred. CONCLUSION Patients with respiratory risks easily develop respiratory symptoms and acquire severe symptoms of nosocomial infection by those viruses. In a paediatric ward, we should adopt not only standard precautions but also isolation management of the patients with respiratory symptoms, even if they have negative results in rapid tests.
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Affiliation(s)
- H Kobayashi
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan; Division of Pulmonology, National Center for Child Health and Development, Tokyo, Japan
| | - M Shinjoh
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan; Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan.
| | - K Sudo
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - S Kato
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - M Morozumi
- Department of Infectious Diseases, Keio University School of Medicine, Tokyo, Japan
| | - G Koinuma
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan; Division of Pulmonology, National Center for Child Health and Development, Tokyo, Japan
| | - T Takahashi
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
| | - Y Takano
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Y Tamura
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - N Hasegawa
- Center for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
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15
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Matsuda K, Hamachi N, Yamaguchi T, Oka S, Suzuki A, Shimoda T, Ikeda T, Eguchi M, Nakahara M, Nagai Y, Takano Y, Kaneko H, Morita M. A path analysis of the interdependent relationships between life space assessment scores and relevant factors in an elderly Japanese community. J Phys Ther Sci 2019; 31:326-331. [PMID: 31037003 PMCID: PMC6451960 DOI: 10.1589/jpts.31.326] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 11/14/2018] [Accepted: 01/03/2019] [Indexed: 11/24/2022] Open
Abstract
[Purpose] This study aimed to examine the direct and indirect effects of factors
influencing the risk of life space assessment using path analysis. [Participants and
Methods] A sample of 212 elderly residents (at least 65 years old) with no clear
indications of cognitive dysfunction, visual impairment, and physical dysfunction were
recruited for the study. Data on these factors were collected from the participants at a
community gathering using measures of life space assessment, skeletal muscle mass, lower
extremity muscle strength, mobility, cognitive function, and fear of falling.
Correlational and path analyses were used to investigate the relationships between these
variables. [Results] The final path model satisfied the requisite statistical criteria,
and subsequently, the relationships between the physiological and psychological factors
associated with life space assessment were structured and represented visually. Age,
skeletal muscle mass, fear of falling, and mobility had a direct effect on life space
assessment, whereas lower extremity muscle strength and cognitive function affected it
indirectly. [Conclusion] In this study, direct and indirect effects of physiological and
psychological factors related to risk of life space assessment of the elderly were
clarified using path analysis.
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Affiliation(s)
- Kensuke Matsuda
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Nozomi Hamachi
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Tamotsu Yamaguchi
- Department of Physical Therapy, Fukuoka International College of Health and Welfare, Japan
| | - Shinichiro Oka
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Akari Suzuki
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Takeyoshi Shimoda
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Takuro Ikeda
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Masahiko Eguchi
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Masami Nakahara
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Yoshiharu Nagai
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Yoshio Takano
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Hideo Kaneko
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
| | - Masaharu Morita
- Department of Physical Therapy, School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare: 137-1 Enokizu, Okawa-city, Fukuoka 831-8501, Japan
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16
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Ishiyama Y, Ishida F, Ooae S, Takano Y, Seki J, Shimada S, Nakahara K, Maeda C, Enami Y, Sawada N, Hidaka E, Kudo S. Surgical starting time in the morning versus the afternoon: propensity score matched analysis of operative outcomes following laparoscopic colectomy for colorectal cancer. Surg Endosc 2018; 33:1769-1776. [DOI: 10.1007/s00464-018-6449-9] [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: 06/23/2018] [Accepted: 09/05/2018] [Indexed: 10/28/2022]
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17
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Matsumoto S, Matsunaga Y, Kyoda N, Ishimi M, Onishi M, Masunaga N, Satake O, Tachibana K, Takano Y. P3825Clinical significance of B-type natriuretic peptide levels at 3-month after atrial fibrillation ablation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3825] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Matsumoto
- Hoshigaoka Medical Center, Cardiovascular Medicine, Hirakata, Japan
| | - Y Matsunaga
- Hoshigaoka Medical Center, Cardiovascular Medicine, Hirakata, Japan
| | - N Kyoda
- Hoshigaoka Medical Center, Cardiovascular Medicine, Hirakata, Japan
| | - M Ishimi
- Hoshigaoka Medical Center, Cardiovascular Medicine, Hirakata, Japan
| | - M Onishi
- Hoshigaoka Medical Center, Cardiovascular Medicine, Hirakata, Japan
| | - N Masunaga
- Hoshigaoka Medical Center, Cardiovascular Medicine, Hirakata, Japan
| | - O Satake
- Hoshigaoka Medical Center, Cardiovascular Medicine, Hirakata, Japan
| | - K Tachibana
- Hoshigaoka Medical Center, Cardiovascular Medicine, Hirakata, Japan
| | - Y Takano
- Hoshigaoka Medical Center, Cardiovascular Medicine, Hirakata, Japan
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18
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Moutabarrik A, Ishibashi M, Kameoka H, Kawaguchi N, Takano Y, Kokado Y, Onishi S, Sonoda T, Takahara S, Okuyama A. In vitro FK506 kidney tubular cell toxicity. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.87] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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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19
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Moutabarrik A, Ishibashi M, Fukunaga M, Kameoka H, Takano Y, Kokado Y, Sonoda T, Takahara S, Okuyama A. FK506 mechanism of nephrotoxicity: stimulatory effect on endothelin secretion by cultured kidney cells. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.93] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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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20
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Nakaseko Y, Shiba H, Yamanouchi E, Takano Y, Sakamoto T, Imazu H, Ashida H, Yanaga K. Successful Treatment of Stricture of Duct-to-Duct Biliary Anastomosis After Living-Donor Liver Transplantation of the Left Lobe: A Case Report. Transplant Proc 2018; 49:1644-1648. [PMID: 28838456 DOI: 10.1016/j.transproceed.2017.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 06/16/2017] [Indexed: 01/18/2023]
Abstract
Biliary complications, such as stricture or obstruction, after living-donor liver transplantation (LDLT) remain major problems to be solved. Magnetic compression anastomosis (MCA) is a minimally invasive method of biliary anastomosis without surgery in patients with biliary stricture or obstruction. A 66-year-old woman had undergone LDLT for end-stage liver disease for primary biliary cholangitis 20 months previously at another hospital. Computerized tomography showed dilation of the intrahepatic bile duct (B2). Because B2 was invisible with the use of endoscopic retrograde cholangiopancreatography, percutaneous transhepatic biliary drainage (PTBD) was performed for treatment of cholangitis. The rendezvous technique failed because a guidewire could not pass through the biliary stricture. Therefore, we decided to perform MCA. A parent magnet was endoscopically placed distally in the common bile duct of the stricture, and a daughter magnet attached to a guidewire was inserted proximally through the fistula tract of the PTBD. Both magnets were positioned across the stricture, and the 2 magnets were pulled to each other by magnetic power, to sandwich the stricture. By 14 days after MCA, a fistula between B2 and the common bile duct was created. At 28 days after MCA, the magnets were removed distally and a 16-French tube was placed across the fistula. At 7 months after MCA, that tube was removed. In conclusion, when a conventional endoscopic or percutaneous approach including the rendezvous technique fails, MCA is a good technique for biliary stricture after LDLT.
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MESH Headings
- Aged
- Anastomosis, Surgical/adverse effects
- Anastomosis, Surgical/methods
- Bile Ducts/diagnostic imaging
- Bile Ducts/pathology
- Bile Ducts/surgery
- Bile Ducts, Intrahepatic/diagnostic imaging
- Bile Ducts, Intrahepatic/surgery
- Biliary Tract Surgical Procedures/adverse effects
- Biliary Tract Surgical Procedures/methods
- Cholangiopancreatography, Endoscopic Retrograde/methods
- Cholangitis/etiology
- Cholangitis/pathology
- Cholangitis/surgery
- Constriction, Pathologic/etiology
- Constriction, Pathologic/surgery
- Drainage/adverse effects
- Drainage/methods
- End Stage Liver Disease/etiology
- End Stage Liver Disease/surgery
- Female
- Humans
- Liver Cirrhosis, Biliary/complications
- Liver Cirrhosis, Biliary/surgery
- Liver Transplantation/adverse effects
- Liver Transplantation/methods
- Living Donors
- Magnetics
- Postoperative Complications/etiology
- Postoperative Complications/pathology
- Postoperative Complications/surgery
- Tomography, X-Ray Computed
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Affiliation(s)
- Y Nakaseko
- Department of Surgery, Jikei University School of Medicine, Tokyo, Japan.
| | - H Shiba
- Department of Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - E Yamanouchi
- Department of Radiology, International University of Health and Welfare Hospital, Tochigi, Japan
| | - Y Takano
- Department of Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - T Sakamoto
- Department of Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - H Imazu
- Department of Endoscopy, Jikei University School of Medicine, Tokyo, Japan
| | - H Ashida
- Department of Radiology, Jikei University School of Medicine, Tokyo, Japan
| | - K Yanaga
- Department of Surgery, Jikei University School of Medicine, Tokyo, Japan
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21
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Nakamura K, Saito K, Kashiwazaki J, Aoyagi T, Arai K, Hara Y, Kobari S, Mori H, Ohashi K, Takano Y, Kaku M, Kanemitsu K. Evaluation of ozonated water using ASTM E1174 for standardized testing of handwash formulations for healthcare personnel. J Hosp Infect 2018; 100:211-213. [PMID: 29452243 DOI: 10.1016/j.jhin.2018.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 02/07/2018] [Indexed: 10/18/2022]
Abstract
Removal of bacteria by handwashing with ozonated water was evaluated using the ASTM E1174 standard test method. Thirty healthy volunteers were assigned randomly to three groups: ozonated water, antimicrobial soap and water, and non-antimicrobial soap and water. A 3 log10 cfu reduction was achieved by washing hands with ozonated water or antimicrobial soap and water. However, ozonated water was not significantly superior to non-antimicrobial soap and water. Ozonated water may remove bacteria from the hands to at least a similar extent as that by non-antimicrobial soap and water in the absence of visible dirt or body fluid contamination.
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Affiliation(s)
- K Nakamura
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan.
| | - K Saito
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan
| | - J Kashiwazaki
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan
| | - T Aoyagi
- Department of Infection Control and Laboratory Diagnostics, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - K Arai
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan
| | - Y Hara
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan
| | - S Kobari
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan
| | - H Mori
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan
| | - K Ohashi
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan
| | - Y Takano
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan
| | - M Kaku
- Department of Infection Control and Laboratory Diagnostics, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - K Kanemitsu
- Department of Infection Control, Fukushima Medical University, Fukushima, Japan
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22
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Takano Y, Ullah MS, Gotoh T. Effect of temperature on diapause termination and post-diapause development in Eotetranychus smithi (Acari: Tetranychidae). Exp Appl Acarol 2017; 73:353-363. [PMID: 29185081 DOI: 10.1007/s10493-017-0199-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 11/22/2017] [Indexed: 06/07/2023]
Abstract
Previous studies on the spider mite Eotetranychus smithi Pritchard & Baker have shown that diapause in eggs is induced by low temperature alone and that females developed at ≤ 17.5 °C laid diapause eggs, regardless of the photoperiod. In this study, diapause eggs were kept at 5 °C and a photoperiod of 16L:8D for 0-120 days and then maintained at 25 °C to know the effect of chilling on diapause termination. Diapause eggs mostly hatched when they were maintained at 25 °C after chilling for 30-90 days at 5 °C, which suggests that diapause termination is favored by low temperatures. To clarify the hatching conditions after diapause termination, diapause eggs kept at 5 °C for 45 days were subsequently maintained at various constant temperatures (from 15 to 25 °C) under a long-day photoperiod (16L:8D). The hatchability at all temperatures tested was high (> 90%) and did not significantly differ among the high temperatures. Duration of embryonic development was shorter with increasing warming temperature after chilling. The lower thermal threshold (t) and thermal constant (k) for post-diapause egg development were 10.5 °C and 76.9 degree-days, respectively. Females, which developed from diapause eggs that were chilled at 5 °C for 45 days and then maintained at 15 °C, laid only non-diapause eggs, which indicates that they were prevented from re-entering diapause even under diapause-inducing conditions (15 °C). Thus, temperature is the main factor to control diapause termination and post-diapause development, which has also been found for other spider mites that enter diapause at the egg stage.
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Affiliation(s)
- Y Takano
- Laboratory of Applied Entomology and Zoology, Faculty of Agriculture, Ibaraki University, Ami, Ibaraki, 300-0393, Japan
| | - M S Ullah
- Laboratory of Applied Entomology and Zoology, Faculty of Agriculture, Ibaraki University, Ami, Ibaraki, 300-0393, Japan
| | - T Gotoh
- Laboratory of Applied Entomology and Zoology, Faculty of Agriculture, Ibaraki University, Ami, Ibaraki, 300-0393, Japan.
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23
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Furukawa Y, Haruyama N, Nikaido M, Nakanishi M, Ryu N, Oh-Hora M, Kuremoto K, Yoshizaki K, Takano Y, Takahashi I. Stim1 Regulates Enamel Mineralization and Ameloblast Modulation. J Dent Res 2017; 96:1422-1429. [PMID: 28732182 DOI: 10.1177/0022034517719872] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Loss-of-function mutations in the Ca2+ release-activated Ca2+ channel genes ORAI1 and STIM1 abolish store-operated Ca2+ entry (SOCE) and result in ectodermal dysplasia with amelogenesis imperfecta. However, because of the limited availability of patient tissue, analyses of enamel mineralization or possible changes in ameloblast function or morphology have not been possible. Here, we generated mice with ectodermal tissue-specific deletion of Stim1 ( Stim1 cKO [conditional knockout]), Stim2 ( Stim2 cKO), and Stim1 and Stim2 ( Stim1/2 cKO) and analyzed their enamel phenotypes as compared with those of control ( Stim1/2fl/fl) animals. Ablation of Stim1 and Stim1/2 but not Stim2 expression resulted in chalky enamel and severe attrition at the incisor tips and molar cusps. Stim1 and Stim1/2 cKO, but not Stim2 cKO, demonstrated inferior enamel mineralization with impaired structural integrity, whereas the shape of the teeth and enamel thickness appeared to be normal in all animals. The gene expression levels of the enamel matrix proteins Amelx and Ambn and the enamel matrix proteases Mmp20 and Klk4 were not altered by the abrogation of SOCE in Stim1/2 cKO mice. The morphology of ameloblasts during the secretory and maturation stages was not significantly altered in either the incisors or molars of the cKO animals. However, in Stim1 and Stim1/2 cKO incisors, the alternating modulation of maturation-stage ameloblasts between the smooth- and ruffle-ended cell types continued beyond the regular cycle and extended to the areas corresponding to the zone of postmodulation ameloblasts in the teeth of control animals. These results indicate that SOCE is essential for proper enamel mineralization, in which Stim1 plays a critical role during the maturation process.
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Affiliation(s)
- Y Furukawa
- 1 Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth, and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,2 Institute of Decision Science Program for Sustainable Society, Kyushu University, Fukuoka, Japan
| | - N Haruyama
- 1 Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth, and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - M Nikaido
- 1 Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth, and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - M Nakanishi
- 1 Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth, and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - N Ryu
- 1 Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth, and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - M Oh-Hora
- 3 Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - K Kuremoto
- 4 Department of Advanced Prosthodontics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - K Yoshizaki
- 1 Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth, and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Y Takano
- 5 Department of Cell Biology and Neuroscience, School of Medicine, Juntendo University, Tokyo, Japan
| | - I Takahashi
- 1 Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth, and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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24
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Bayu MSYI, Ullah MS, Takano Y, Gotoh T. Impact of constant versus fluctuating temperatures on the development and life history parameters of Tetranychus urticae (Acari: Tetranychidae). Exp Appl Acarol 2017; 72:205-227. [PMID: 28707033 DOI: 10.1007/s10493-017-0151-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 07/03/2017] [Indexed: 06/07/2023]
Abstract
The impact of daily temperature fluctuations on arthropod life history parameters is inadequately studied compared with the ample amount of research that has been conducted on the effects of constant temperatures. Fluctuating temperatures are likely to be more realistic, as they are ecologically more similar to what these arthropods experience in nature. Here, we compared the impact of 11 constant temperatures that ranged from 10 to 35 °C with fluctuating temperatures with the same corresponding mean temperature and an amplitude of 10 °C between high (12 h) and low (12 h) temperatures on the development and life history parameters of Tetranychus urticae under continuous light conditions. No eggs hatched at constant 10 °C, whereas 81.5% of eggs successfully completed development at fluctuating 10 °C (15/5 °C). Egg-to-female adult development was faster under fluctuating temperatures from 12.5 to 27.5 °C than under constant temperatures, whereas the opposite trend was observed at >30 °C. The lower thermal thresholds (T) were 11.63 and 8.63 °C, and thermal constants (K) were 127.81 and 150.69 degree-days for egg-to-female adults at constant and fluctuating temperatures, respectively. The numbers of oviposition days were significantly higher at fluctuating 15 °C than at the corresponding constant temperature, whereas the opposite trend was observed from 20 to 30 °C. The intrinsic rate of increase (r) was higher at fluctuating than at constant 15 °C. The net reproductive rate (R 0) was also higher at fluctuating than at constant 15 and 35 °C, but showed an opposite trend at 20 and 25 °C. We conclude that fluctuating temperatures should be considered to accurately predict spider mite population dynamics in nature.
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Affiliation(s)
- M S Y I Bayu
- Laboratory of Applied Entomology and Zoology, Faculty of Agriculture, Ibaraki University, Ami, Ibaraki, 300-0393, Japan
| | - M S Ullah
- Laboratory of Applied Entomology and Zoology, Faculty of Agriculture, Ibaraki University, Ami, Ibaraki, 300-0393, Japan
| | - Y Takano
- Laboratory of Applied Entomology and Zoology, Faculty of Agriculture, Ibaraki University, Ami, Ibaraki, 300-0393, Japan
| | - T Gotoh
- Laboratory of Applied Entomology and Zoology, Faculty of Agriculture, Ibaraki University, Ami, Ibaraki, 300-0393, Japan.
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25
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Wakiyama S, Takano Y, Shiba H, Gocho T, Sakamoto T, Ishida Y, Yanaga K. Significance of Portal Venous Velocity in Short-term Graft Function in Living Donor Liver Transplantation. Transplant Proc 2017; 49:1087-1091. [PMID: 28583533 DOI: 10.1016/j.transproceed.2017.03.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
BACKGROUND Graft regeneration and functional recovery after reperfusion of transplanted graft are very important for successful living donor liver transplantation (LDLT). The aim of this study was to evaluate the significance of postoperative portal venous velocity (PVV) in short-term recovery of graft function in LDLT. PATIENTS AND METHODS From February 2007 through December 2015, we performed 17 primary LDLTs, which were included in the present study. The patients ranged in age from 12 to 65 years (mean: 50 years), and 11 were female patients. Postoperatively, Doppler ultrasonography was performed daily to measure PVV (cm/s), and liver function parameters were measured daily. The change in PVV (ΔPVV) was defined as follows: ΔPVV = PVV on postoperative day (POD) 1 - PVV on POD 7. Maximal value of serum aspartate aminotransferase (ASTmax) and maximal value of serum alanine transaminase (ALTmax) at 24 hours after graft reperfusion were used as parameters of reperfusion injury. Correlation analyses were performed as follows: (1) correlation of ΔPVV and PVV on POD 1 (PVV-POD 1) with the values such as ASTmax, ALTmax, other liver function parameters on POD 7 and graft regeneration rate; (2) correlation of ASTmax and ALTmax with other liver function parameters on POD 7. RESULTS ΔPVV significantly correlated with the values of serum total bilirubin (P < .01), prothrombin time (P < .01), and platelet count (P < .05), and PVV-POD 1 significantly correlated with the values of serum total bilirubin (P < .05) and prothrombin time (P < .05). CONCLUSION ΔPVV and PVV-POD 1 may be useful parameters of short-term functional recovery of the transplant liver in LDLT.
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Affiliation(s)
- S Wakiyama
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan.
| | - Y Takano
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - H Shiba
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - T Gocho
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - T Sakamoto
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Y Ishida
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - K Yanaga
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
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26
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Matsuse H, Hashida R, Takano Y, Omoto M, Nago T, Bekki M, Shiba N. Walking Exercise Simultaneously Combined With Neuromuscular Electrical Stimulation of Antagonists Resistance Improved Muscle Strength, Physical Function, and Knee Pain in Symptomatic Knee Osteoarthritis: A Single-Arm Study. J Strength Cond Res 2017; 31:171-180. [PMID: 27135477 DOI: 10.1519/jsc.0000000000001463] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Matsuse, H, Hashida, R, Takano, Y, Omoto, M, Nago, T, Bekki, M, and Shiba, N. Walking exercise simultaneously combined with neuromuscular electrical stimulation of antagonists resistance improved muscle strength, physical function, and knee pain in symptomatic knee osteoarthritis: a single-arm study. J Strength Cond Res 31(1): 171-180, 2017-A hybrid training system (HTS) was developed as a way to combine the application of electrical stimulation and voluntary contraction. Moreover, we developed a novel training method using HTS during walking (HTSW). This study was designed to evaluate the effect of HTSW on muscle strength, physical function, and knee pain in knee osteoarthritis (KOA). Eleven subjects (age: 74.0 ± 8.5 years) participated and performed HTSW for 30 minutes 3 times a week for 12 weeks. Isokinetic knee extension/knee flexion torque, muscle volume, one-leg standing test (OST), functional reach test, 10-m maximum gait speed, timed up and go test, 6-minute walking test, knee pain using Visual Analog Scale (VAS), and Japan Knee Osteoarthritis Measure (JKOM) were assessed. Knee extension torque significantly increased from 1.02 ± 0.29 N·m·kg pretraining to 1.23 ± 0.33 N·m·kg posttraining (P < 0.01, ES = 0.68). Knee flexion torque significantly increased from 0.65 ± 0.18 N·m·kg pretraining to 0.78 ± 0.17 N·m·kg posttraining (p < 0.01). Muscle volume significantly increased from 9.00 ± 2.84 mm pretraining to 10.37 ± 3.16 mm at the end of training (p ≤ 0.05). All the physical functions except OST were significantly improved. The JKOM score improved from 26.7 ± 18.30 pretraining to 17.2 ± 14.02 at the end of training (p < 0.01). The VAS score significantly decreased from 35.4 ± 22.59 pretraining to 16.5 ± 19.73 at the end of training (p ≤ 0.05). Hybrid training system during walking may be an effective training method for the treatment of people with KOA.
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Affiliation(s)
- Hiroo Matsuse
- 1Department of Orthopedics, Kurume University School of Medicine, Kurume, Fukuoka, Japan; and 2Division of Physical Therapy, Fukuoka International University of Health and Welfare, Okawa, Fukuoka, Japan
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27
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Gan P, Narusaka M, Tsushima A, Narusaka Y, Takano Y, Shirasu K. Draft Genome Assembly of Colletotrichum chlorophyti, a Pathogen of Herbaceous Plants. Genome Announc 2017; 5:e01733-16. [PMID: 28280027 PMCID: PMC5347247 DOI: 10.1128/genomea.01733-16] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 01/11/2017] [Indexed: 12/14/2022]
Abstract
Colletotrichum chlorophyti is a fungal pathogen that infects various herbaceous plants, including crops such as legumes, tomato, and soybean. Here, we present the genome of C. chlorophyti NTL11, isolated from tomato. Analysis of this genome will allow a clearer understanding of the molecular mechanisms underlying fungal host range and pathogenicity.
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Affiliation(s)
- P Gan
- RIKEN Center for Sustainable Resource Science, Kanagawa, Japan
| | - M Narusaka
- Research Institute of Biological Sciences, Okayama, Japan
| | - A Tsushima
- RIKEN Center for Sustainable Resource Science, Kanagawa, Japan
- Graduate School of Science, University of Tokyo, Tokyo, Japan
| | - Y Narusaka
- Research Institute of Biological Sciences, Okayama, Japan
| | - Y Takano
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - K Shirasu
- RIKEN Center for Sustainable Resource Science, Kanagawa, Japan
- Graduate School of Science, University of Tokyo, Tokyo, Japan
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Takano Y, Shirai O, Kitazumi Y, Kano K. Proposal of a new mechanism for the directional propagation of the action potential using a mimicking system. Phys Chem Chem Phys 2017; 19:5310-5317. [PMID: 28155939 DOI: 10.1039/c6cp07603c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A nerve conduction model is constructed by using some liquid-membrane cells that mimic the function of the K+ and Na+ channels. By imitating two types of Na+ channels (ligand-gated Na+ channels and voltage-gated Na+ channels), a new mechanism for the directional propagation of the action potential along the axon toward the axon terminal is proposed. When the nerve cell is excited by an external (outer) stimulus, it can be presumed that the ligand-gated channels work as power sources at the synapse to propagate the change in the membrane potential, and then the voltage-gated channels locally assist the propagation at each site of the axon (nodes of Ranvier).
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Affiliation(s)
- Y Takano
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
| | - O Shirai
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
| | - Y Kitazumi
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
| | - K Kano
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
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Hashida R, Kawaguchi T, Bekki M, Omoto M, Matsuse H, Nago T, Takano Y, Ueno T, Koga H, George J, Shiba N, Torimura T. Aerobic vs. resistance exercise in non-alcoholic fatty liver disease: A systematic review. J Hepatol 2017; 66:142-152. [PMID: 27639843 DOI: 10.1016/j.jhep.2016.08.023] [Citation(s) in RCA: 258] [Impact Index Per Article: 36.9] [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: 06/07/2016] [Revised: 08/01/2016] [Accepted: 08/31/2016] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Exercise is a first-line therapy for patients with non-alcoholic fatty liver disease (NAFLD). We sought to: 1) summarize effective aerobic and resistance exercise protocols for NAFLD; and 2) compare the effects and energy consumption of aerobic and resistance exercises. METHODS A literature search was performed using PubMed, Web of Science, and Scopas to January 28, 2016. From a total of 95 articles, 23 studies including 24 aerobic and 7 resistance exercise protocols were selected for the summary of exercise protocols. Twelve articles including 13 aerobic and 4 resistance exercise protocols were selected for the comparative analysis. RESULTS For aerobic exercise, the median effective protocol was 4.8 metabolic equivalents (METs) for 40min/session, 3times/week for 12weeks. For resistance exercise, the median effective protocol was 3.5 METs for 45min/session, 3times/week for 12weeks. Aerobic and resistance exercise improved hepatic steatosis. No significant difference was seen in the duration, frequency, or period of exercise between the two exercise groups; however, %VO2max and energy consumption were significantly lower in the resistance than in the aerobic group (50% [45-98] vs. 28% [28-28], p=0.0034; 11,064 [6394-21,087] vs. 6470 [4104-12,310] kcal/total period, p=0.0475). CONCLUSIONS Resistance exercise improves NAFLD with less energy consumption. Thus, resistance exercise may be more feasible than aerobic exercise for NAFLD patients with poor cardiorespiratory fitness or for those who cannot tolerate or participate in aerobic exercise. These data may indicate a possible link between resistance exercise and lipid metabolism in the liver. LAY SUMMARY Both aerobic and resistance exercise reduce hepatic steatosis in non-alcoholic fatty liver disease (NAFLD) with similar frequency, duration, and period of exercise (40-45min/session 3times/week for 12weeks); however, the two forms of exercise have different characteristics. Intensity and energy consumption were significantly lower for resistance than for aerobic exercise. Resistance exercise may be more feasible than aerobic exercise for NAFLD patients with poor cardiorespiratory fitness or for those who cannot tolerate or participate in aerobic exercise.
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Affiliation(s)
- Ryuki Hashida
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan; Division of Rehabilitation, Kurume University Hospital, Kurume, Japan
| | - Takumi Kawaguchi
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.
| | - Masafumi Bekki
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan; Division of Rehabilitation, Kurume University Hospital, Kurume, Japan
| | - Masayuki Omoto
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan; Division of Rehabilitation, Kurume University Hospital, Kurume, Japan
| | - Hiroo Matsuse
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan; Division of Rehabilitation, Kurume University Hospital, Kurume, Japan
| | - Takeshi Nago
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan; Division of Rehabilitation, Kurume University Hospital, Kurume, Japan
| | - Yoshio Takano
- Department of Physical Therapy School of Health Sciences at Fukuoka, International University Health and Welfare, Enokizu, Okawa, Japan
| | - Takato Ueno
- Division of Gastroenterology, Department of Internal Medicine, Asakura Medical Association Hospital, Asakura, Japan; Liver Cancer Division, Research Center for Innovative Cancer Therapy, Kurume University, Kurume, Japan
| | - Hironori Koga
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan; Liver Cancer Division, Research Center for Innovative Cancer Therapy, Kurume University, Kurume, Japan
| | - Jacob George
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, NSW, Australia
| | - Naoto Shiba
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Japan; Division of Rehabilitation, Kurume University Hospital, Kurume, Japan
| | - Takuji Torimura
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan; Liver Cancer Division, Research Center for Innovative Cancer Therapy, Kurume University, Kurume, Japan
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Hashida R, Matsuse H, Omoto M, Shinozaki N, Nago T, Takano Y, Shiba N. Electrical Stimulation of the Antagonist Muscle Added to Ergometer Training Improves Oxygen Uptake and Muscle Strength. Arch Phys Med Rehabil 2016. [DOI: 10.1016/j.apmr.2016.08.172] [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: 10/21/2022]
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Matsumoto R, Sasama Y, Fujioka M, Irifune T, Tanaka M, Yamaguchi T, Takeya H, Takano Y. Note: Novel diamond anvil cell for electrical measurements using boron-doped metallic diamond electrodes. Rev Sci Instrum 2016; 87:076103. [PMID: 27475610 DOI: 10.1063/1.4959154] [Citation(s) in RCA: 4] [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] [Indexed: 06/06/2023]
Abstract
A novel diamond anvil cell suitable for electrical transport measurements under high pressure has been developed. A boron-doped metallic diamond film was deposited as an electrode on a nano-polycrystalline diamond anvil using a microwave plasma-assisted chemical vapor deposition technique combined with electron beam lithography. The maximum pressure that can be achieved by this assembly is above 30 GPa. We report electrical transport measurements of Pb up to 8 GPa. The boron-doped metallic diamond electrodes showed no signs of degradation after repeated compression.
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Affiliation(s)
- R Matsumoto
- MANA, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - Y Sasama
- MANA, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - M Fujioka
- MANA, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - T Irifune
- Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan
| | - M Tanaka
- MANA, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - T Yamaguchi
- MANA, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - H Takeya
- MANA, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - Y Takano
- MANA, National Institute for Materials Science, Tsukuba 305-0047, Japan
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Uwagawa T, Sakamoto T, Nakaseko Y, Takano Y, Furukawa K, Kanehira M, Onda S, Gocho T, Shiba H, Arakawa Y, Aiba K, Yanaga K. P-117 Phase II study of combination chemotherapy of gemcitabine/S-1 with nafamostat mesilate for advanced unresectable pancreatic cancer. First report. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Takano Y, Matsuse H, Tsukada Y, Omoto M, Hashida R, Shiba N. A New Training for Older Adults Using Combined Neuromuscular Electrical Stimulation and Volitional Contraction: A Pilot Study. Kurume Med J 2016; 62:73-81. [PMID: 27237936 DOI: 10.2739/kurumemedj.ms66001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The hybrid training system (HTS) resists the motion of a volitionally contracting agonist muscle using force generated by its electrically stimulated antagonist. We have developed a new training method using the principle of HTS. This study was designed to evaluate the effect of HTS with electrical stimulation on muscle strength and physical function by comparing it against training without electrical stimulation in older adults. 16 subjects were randomly divided into two groups: the squat and single leg lift training (control, CTR) group, and the CTR with HTS training group. Some electrical stimulation was applied to the quadriceps and hamstring muscles in the HTS group. The subjects performed training for 25 min per session 3 times a week for 12 weeks. At points before and after the research maximal isokinetic torque, knee-flexors (KFT) and knee-extensors (KET), a one-leg standing test (OLT), a functional reach test (FRT), a 10-meter maximal gait time (10MGT) and Timed up & go test (TUG) were conducted. None of the subjects had any injuries during the study period. TUG significantly improved after the training period in both the HTS group (7.15 sec to 6.01 sec P = 0.01) and in the CTR.
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Affiliation(s)
- Yoshio Takano
- Department of Physical Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare
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Hashida R, Matsuse H, Takano Y, Omoto M, Nago T, Shiba N. Walking exercise combined with neuromuscular electrical stimulation of antagonist resistance improved muscle strength and physical function for elderly people: A pilot study. ACTA ACUST UNITED AC 2016. [DOI: 10.7600/jpfsm.5.195] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Ryuki Hashida
- Division of Rehabilitation, Kurume University Hospital
| | - Hiroo Matsuse
- Division of Rehabilitation, Kurume University Hospital
| | - Yoshio Takano
- Department of Physical Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare
| | | | - Takeshi Nago
- Division of Rehabilitation, Kurume University Hospital
| | - Naoto Shiba
- Division of Rehabilitation, Kurume University Hospital
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Omoto M, Matsuse H, Hashida R, Takano Y, Yamada S, Ohshima H, Tagawa Y, Shiba N. Cycling Exercise with Electrical Stimulation of Antagonist Muscles Increases Plasma Growth Hormone and IL-6. TOHOKU J EXP MED 2015; 237:209-17. [PMID: 26522057 DOI: 10.1620/tjem.237.209] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Performing aerobics and resistance exercise at exactly the same time has not been available although combining both types of exercise in one training program has been attempted. The hybrid training system (HTS) is a resistance exercise that combines voluntary concentric muscle contractions with electrically stimulated eccentric muscle contractions. We devised an exercise technique using HTS on a cycle ergometer (HCE). Growth hormone (GH) and lactate are indicators of adequate training intensity. Interleukin-6 (IL-6) reflects enhancing lipid metabolism. The purpose of this study was to show that HCE provides sufficient exercise to stimulate the secretion of GH, lactate and IL-6. We compared an HCE test with cycle ergometer alone (CE). Ten healthy male subjects performed HCE and CE tests for 30 minutes each. The workload of both tests was set the same at 40% of each subject's peak oxygen uptake. For HCE, 2-minute HTS and 1-minute rest intervals were repeated. GH, lactate, and IL-6 were evaluated before and immediately after exercise, and at 15, 30 and 60 minutes. GH and lactate increased immediately after HCE. Moreover, the degree of the increases in GH after HCE (0 and 15 minutes) was higher than that after CE. IL-6 increased after HCE at 30 min, and the rate of change was higher than for CE. These results showed that HCE was more efficient in stimulating acute increases in GH, lactate and IL-6 than CE at the same workload. We may be able to combine electrically stimulated resistance exercise with aerobic exercise using HCE.
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Ikeda S, Takano Y, Cynshi O, Tanaka R, Christ AD, Boerlin V, Beyer U, Beck A, Ciorciaro C, Meyer M, Kadowaki T. A novel and selective sodium-glucose cotransporter-2 inhibitor, tofogliflozin, improves glycaemic control and lowers body weight in patients with type 2 diabetes mellitus. Diabetes Obes Metab 2015; 17:984-93. [PMID: 26179482 DOI: 10.1111/dom.12538] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 06/25/2015] [Accepted: 07/02/2015] [Indexed: 01/08/2023]
Abstract
AIM To assess the efficacy, safety and tolerability of different doses of tofogliflozin, a novel, highly selective sodium-glucose cotransporter 2 (SGLT2) inhibitor, in patients with type 2 diabetes mellitus (T2DM). METHODS In a 12-week, multicentre, multinational, randomized, double-blind, parallel-group, placebo-controlled, dose-finding study, patients with inadequate glycaemic control from diet and exercise alone, or from diet and exercise plus a stable dose of metformin, were randomized to one of five doses of tofogliflozin (2.5, 5, 10, 20, or 40 mg) or placebo. The primary efficacy endpoint was absolute change at week 12 from baseline in glycated haemoglobin (HbA1c), minus the change in the placebo group. RESULTS Statistically significant dose-dependent reductions in HbA1c were shown in all treated groups except the 2.5-mg dose group, with a maximum reduction of 0.56% (placebo-subtracted) at the 40-mg dose, along with increased urinary glucose excretion. Metformin treatment had no substantial influence on tofogliflozin efficacy. Dose-dependent reductions in fasting plasma glucose and body weight were observed, and glucose intolerance was improved, with a trend towards blood pressure reduction. Slight increases were observed for mean ketone bodies with no abnormal change in ketone body ratio. No deaths or treatment-related serious adverse events were reported. The incidence of adverse events was similar in the placebo (37.9%) to that in the tofogliflozin group (35.9-46.3%). Withdrawal because of adverse events was rare (≤2 patients per treatment group), with similar rates of withdrawal in the placebo and tofogliflozin groups. CONCLUSIONS A once-daily dose of tofogliflozin for 12 weeks was an effective, safe and well-tolerated treatment for T2DM.
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Affiliation(s)
- S Ikeda
- Chugai Pharmaceutical Co., Ltd, Tokyo, Japan
| | - Y Takano
- Chugai Pharmaceutical Co., Ltd, Tokyo, Japan
| | - O Cynshi
- Chugai Pharmaceutical Co., Ltd, Tokyo, Japan
| | - R Tanaka
- Chugai Pharmaceutical Co., Ltd, Tokyo, Japan
| | - A D Christ
- F. Hoffman-La Roche AG, Basel, Switzerland
| | - V Boerlin
- F. Hoffman-La Roche AG, Basel, Switzerland
| | - U Beyer
- F. Hoffman-La Roche AG, Basel, Switzerland
| | - A Beck
- F. Hoffman-La Roche AG, Basel, Switzerland
| | | | - M Meyer
- F. Hoffman-La Roche AG, Basel, Switzerland
| | - T Kadowaki
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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37
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Shiba N, Matsuse H, Takano Y, Yoshimitsu K, Omoto M, Hashida R, Tagawa Y, Inada T, Yamada S, Ohshima H. Correction: Electrically Stimulated Antagonist Muscle Contraction Increased Muscle Mass and Bone Mineral Density of One Astronaut--Initial Verification on the International Space Station. PLoS One 2015; 10:e0138519. [PMID: 26368534 PMCID: PMC4569477 DOI: 10.1371/journal.pone.0138519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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38
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Shiba N, Matsuse H, Takano Y, Yoshimitsu K, Omoto M, Hashida R, Tagawa Y, Inada T, Yamada S, Ohshima H. Electrically Stimulated Antagonist Muscle Contraction Increased Muscle Mass and Bone Mineral Density of One Astronaut - Initial Verification on the International Space Station. PLoS One 2015; 10:e0134736. [PMID: 26296204 PMCID: PMC4546678 DOI: 10.1371/journal.pone.0134736] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 07/02/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Musculoskeletal atrophy is one of the major problems of extended periods of exposure to weightlessness such as on the International Space Station (ISS). We developed the Hybrid Training System (HTS) to maintain an astronaut's musculoskeletal system using an electrically stimulated antagonist to resist the volitional contraction of the agonist instead of gravity. The present study assessed the system's orbital operation capability and utility, as well as its preventative effect on an astronaut's musculoskeletal atrophy. METHODS HTS was attached to the non-dominant arm of an astronaut staying on the ISS, and his dominant arm without HTS was established as the control (CTR). 10 sets of 10 reciprocal elbow curls were one training session, and 12 total sessions of training (3 times per week for 4 weeks) were performed. Pre and post flight ground based evaluations were performed by Biodex (muscle performance), MRI (muscle volume), and DXA (BMD, lean [muscle] mass, fat mass). Pre and post training inflight evaluations were performed by a hand held dynamometer (muscle force) and a measuring tape (upper arm circumference). RESULTS The experiment was completed on schedule, and HTS functioned well without problems. Isokinetic elbow extension torque (Nm) changed -19.4% in HTS, and -21.7% in CTR. Isokinetic elbow flexion torque changed -23.7% in HTS, and there was no change in CTR. Total Work (Joule) of elbow extension changed -8.3% in HTS, and +0.3% in CTR. For elbow flexion it changed -23.3% in HTS and -32.6% in CTR. Average Power (Watts) of elbow extension changed +22.1% in HTS and -8.0% in CTR. For elbow flexion it changed -6.5% in HTS and -4.8% in CTR. Triceps muscle volume according to MRI changed +11.7% and that of biceps was +2.1% using HTS, however -0.1% and -0.4% respectively for CTR. BMD changed +4.6% in the HTS arm and -1.2% for CTR. Lean (muscle) mass of the arm changed only +10.6% in HTS. Fat mass changed -12.6% in HTS and -6.4% in CTR. CONCLUSIONS These results showed the orbital operation capability and utility, and the preventive effect of HTS for an astronaut's musculoskeletal atrophy. The initial flight data together with the ground data obtained so far will be utilized in the future planning of human space exploration.
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Affiliation(s)
- Naoto Shiba
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Fukuoka, Japan
- Division of Rehabilitation, Kurume University School of Medicine, Kurume, Fukuoka, Japan
- * E-mail:
| | - Hiroo Matsuse
- Division of Rehabilitation, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Yoshio Takano
- Division of Physical Therapy, Fukuoka International University of Health and Welfare, Okawa city, Fukuoka 8318501, Japan
| | - Kazuhiro Yoshimitsu
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Masayuki Omoto
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Fukuoka, Japan
- Division of Rehabilitation, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Ryuki Hashida
- Department of Orthopedics, Kurume University School of Medicine, Kurume, Fukuoka, Japan
- Division of Rehabilitation, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Yoshihiko Tagawa
- Department of Mechanical and Control Engineering, Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
| | - Tomohisa Inada
- Department of Mechanical and Control Engineering, Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
| | - Shin Yamada
- Space Environment Utilization Center, Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, Japan
| | - Hiroshi Ohshima
- Space Environment Utilization Center, Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, Japan
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Inagaki F, Hinrichs KU, Kubo Y, Bowles MW, Heuer VB, Hong WL, Hoshino T, Ijiri A, Imachi H, Ito M, Kaneko M, Lever MA, Lin YS, Methé BA, Morita S, Morono Y, Tanikawa W, Bihan M, Bowden SA, Elvert M, Glombitza C, Gross D, Harrington GJ, Hori T, Li K, Limmer D, Liu CH, Murayama M, Ohkouchi N, Ono S, Park YS, Phillips SC, Prieto-Mollar X, Purkey M, Riedinger N, Sanada Y, Sauvage J, Snyder G, Susilawati R, Takano Y, Tasumi E, Terada T, Tomaru H, Trembath-Reichert E, Wang DT, Yamada Y. DEEP BIOSPHERE. Exploring deep microbial life in coal-bearing sediment down to ~2.5 km below the ocean floor. Science 2015. [PMID: 26206933 DOI: 10.1126/science.aaa6882] [Citation(s) in RCA: 154] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Microbial life inhabits deeply buried marine sediments, but the extent of this vast ecosystem remains poorly constrained. Here we provide evidence for the existence of microbial communities in ~40° to 60°C sediment associated with lignite coal beds at ~1.5 to 2.5 km below the seafloor in the Pacific Ocean off Japan. Microbial methanogenesis was indicated by the isotopic compositions of methane and carbon dioxide, biomarkers, cultivation data, and gas compositions. Concentrations of indigenous microbial cells below 1.5 km ranged from <10 to ~10(4) cells cm(-3). Peak concentrations occurred in lignite layers, where communities differed markedly from shallower subseafloor communities and instead resembled organotrophic communities in forest soils. This suggests that terrigenous sediments retain indigenous community members tens of millions of years after burial in the seabed.
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Affiliation(s)
- F Inagaki
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - K-U Hinrichs
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - Y Kubo
- Center for Deep-Earth Exploration, JAMSTEC, Yokohama 236-0061, Japan. Research and Development Center for Ocean Drilling Science, JAMSTEC, Yokohama 236-0001, Japan
| | - M W Bowles
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - V B Heuer
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - W-L Hong
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA
| | - T Hoshino
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - A Ijiri
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - H Imachi
- Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan. Department of Subsurface Geobiological Analysis and Research, JAMSTEC, Yokosuka 237-0061, Japan
| | - M Ito
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - M Kaneko
- Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan. Department of Biogeochemistry, JAMSTEC, Yokosuka 237-0061, Japan
| | - M A Lever
- Center for Geomicrobiology, Department of Bioscience, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Y-S Lin
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - B A Methé
- Department of Environmental Genomics, J. Craig Venter Institute, Rockville, MD 20850, USA
| | - S Morita
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8567, Japan
| | - Y Morono
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - W Tanikawa
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - M Bihan
- Department of Environmental Genomics, J. Craig Venter Institute, Rockville, MD 20850, USA
| | - S A Bowden
- Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen AB2A 3UE, UK
| | - M Elvert
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - C Glombitza
- Center for Geomicrobiology, Department of Bioscience, Aarhus University, DK-8000 Aarhus C, Denmark
| | - D Gross
- Department of Applied Geosciences and Geophysics, Montanuniversität, 8700 Leoben, Austria
| | - G J Harrington
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - T Hori
- Environmental Management Research Institute, AIST, Tsukuba, Ibaraki 305-8569, Japan
| | - K Li
- Department of Environmental Genomics, J. Craig Venter Institute, Rockville, MD 20850, USA
| | - D Limmer
- Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen AB2A 3UE, UK
| | - C-H Liu
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University, Nanjing, Jiangsu 210093, China
| | - M Murayama
- Center for Advanced Marine Core Research, Kochi University, Nankoku, Kochi 783-8502, Japan
| | - N Ohkouchi
- Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan. Department of Biogeochemistry, JAMSTEC, Yokosuka 237-0061, Japan
| | - S Ono
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Y-S Park
- Petroleum and Marine Resources Research Division, Korea Institute of Geoscience and Mineral Resources, Yuseong-gu, Daejeon 305-350, Korea
| | - S C Phillips
- Department of Earth Sciences, University of New Hampshire, Durham, NH 03824, USA
| | - X Prieto-Mollar
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - M Purkey
- Department of Earth and Atmospheric Sciences, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - N Riedinger
- Department of Earth Sciences, University of California Riverside, Riverside, CA 92521, USA
| | - Y Sanada
- Center for Deep-Earth Exploration, JAMSTEC, Yokohama 236-0061, Japan. Research and Development Center for Ocean Drilling Science, JAMSTEC, Yokohama 236-0001, Japan
| | - J Sauvage
- Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA
| | - G Snyder
- Department of Earth Science, Rice University, Houston, TX 77005, USA
| | - R Susilawati
- School of Earth Science, University of Queensland, Brisbane Queensland 4072, Australia
| | - Y Takano
- Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan. Department of Biogeochemistry, JAMSTEC, Yokosuka 237-0061, Japan
| | - E Tasumi
- Department of Subsurface Geobiological Analysis and Research, JAMSTEC, Yokosuka 237-0061, Japan
| | - T Terada
- Marine Works Japan, Yokosuka 237-0063, Japan
| | - H Tomaru
- Department of Earth Sciences, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - E Trembath-Reichert
- Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | - D T Wang
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Y Yamada
- Research and Development Center for Ocean Drilling Science, JAMSTEC, Yokohama 236-0001, Japan. Department of Urban Management, Graduate School of Engineering, Kyoto University, Kyoto 615-8540, Japan
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Kasahara N, Fukase H, Ohba Y, Saito T, Miyata K, Iida S, Takano Y, Ikeda S, Harigai M, Terao K. A Pharmacokinetic/Pharmacodynamic Drug-Drug Interaction Study of Tofogliflozin (a New SGLT2 Inhibitor) and Selected Anti-Type 2 Diabetes Mellitus Drugs. Drug Res (Stuttg) 2015; 66:74-81. [PMID: 26158794 DOI: 10.1055/s-0035-1549967] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Tofogliflozin is an oral hypoglycemic agent with a novel mechanism of action that reduces blood glucose levels by promoting glucose excretion in urine, achieved by selectively inhibiting sodium-glucose co-transporter 2 (SGLT2). We evaluated the effects of several selected anti-type 2 diabetes mellitus (T2DM) drugs-glimepiride, metformin, sitagliptin, pioglitazone, miglitol, nateglinide, and voglibose-on the pharmacokinetics and pharmacodynamics of tofogliflozin, and the effects of tofogliflozin on the pharmacokinetics of these anti-T2DM drugs in healthy male volunteers. METHODS A single dose of either tofogliflozin alone, one of the anti-T2DM drugs alone, or co-administration of tofogliflozin and the anti-T2DM drug was administered to 108 healthy men. Cmax, AUCinf, and cumulative urine glucose excretion after co-administration of tofogliflozin and each of the anti-T2DM drugs was evaluated relative to the values of those parameters after administration of each drug alone. RESULTS None of the anti-T2DM drugs had any effect on tofogliflozin exposure. Tofogliflozin had no or little effect on the exposure of any anti-T2DM drug. No anti-T2DM drug had any major effect on the cumulative urine glucose excretion induced by tofogliflozin. There were no safety concerns evident after administration of any drug alone or in co-administration. CONCLUSIONS Neither the pharmacokinetics nor the pharmacodynamics of tofogliflozin was affected by any of the anti-T2DM drugs evaluated in this study, nor was the pharmacokinetics of any of the anti-T2DM drugs affected by tofogliflozin in healthy male volunteers.
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Affiliation(s)
- N Kasahara
- Clinical Research Planning Department, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - H Fukase
- CPC Clinical Trial Hospital, Medipolis Medical Research Institute, Kagoshima, Japan
| | - Y Ohba
- Clinical Research Planning Department, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - T Saito
- Clinical Research Planning Department, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - K Miyata
- Clinical Research Planning Department, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - S Iida
- Clinical Research Planning Department, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - Y Takano
- Clinical Research Planning Department, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - S Ikeda
- Clinical Research Planning Department, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - M Harigai
- Department of Pharmacovigilance, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - K Terao
- Clinical Research Planning Department, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
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Matsumura T, Sugimachi K, Iinuma H, Takahashi Y, Kurashige J, Sawada G, Ueda M, Uchi R, Ueo H, Takano Y, Shinden Y, Eguchi H, Yamamoto H, Doki Y, Mori M, Ochiya T, Mimori K. Exosomal microRNA in serum is a novel biomarker of recurrence in human colorectal cancer. Br J Cancer 2015; 113:275-81. [PMID: 26057451 PMCID: PMC4506387 DOI: 10.1038/bjc.2015.201] [Citation(s) in RCA: 372] [Impact Index Per Article: 41.3] [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] [Received: 02/22/2015] [Revised: 04/06/2015] [Accepted: 05/06/2015] [Indexed: 12/11/2022] Open
Abstract
Background: Functional microRNAs (miRNAs) in exosomes have been recognised as potential stable biomarkers in cancers. The aim of this study is to identify specific miRNAs in exosome as serum biomarkers for the early detection of recurrence in human colorectal cancer (CRC). Methods: Serum samples were sequentially obtained from six patients with and without recurrent CRC. The miRNAs were purified from exosomes, and miRNA microarray analysis was performed. The miRNA expression profiles and copy number aberrations were explored using microarray and array CGH analyses in 124 CRC tissues. Then, we validated exosomal miRNAs in 2 serum sample sets (90 and 209 CRC patients) by quantitative real-time RT–PCR. Results: Exosomal miR-17-92a cluster expression level in serum was correlated with the recurrence of CRC. Exosomal miR-19a expression levels in serum were significantly increased in patients with CRC as compared with healthy individuals with gene amplification. The CRC patients with high exosomal miR-19a expression showed poorer prognoses than the low expression group (P<0.001). Conclusions: Abundant expression of exosomal miR-19a in serum was identified as a prognostic biomarker for recurrence in CRC patients.
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Affiliation(s)
- T Matsumura
- 1] Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan [2] Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita City, Osaka 565-0871, Japan
| | - K Sugimachi
- Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan
| | - H Iinuma
- Department of Surgery, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo 173-0003, Japan
| | - Y Takahashi
- 1] Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan [2] Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita City, Osaka 565-0871, Japan
| | - J Kurashige
- Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan
| | - G Sawada
- Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan
| | - M Ueda
- 1] Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan [2] Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita City, Osaka 565-0871, Japan
| | - R Uchi
- Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan
| | - H Ueo
- Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan
| | - Y Takano
- Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan
| | - Y Shinden
- Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan
| | - H Eguchi
- Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan
| | - H Yamamoto
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita City, Osaka 565-0871, Japan
| | - Y Doki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita City, Osaka 565-0871, Japan
| | - M Mori
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita City, Osaka 565-0871, Japan
| | - T Ochiya
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Tokyo 104-0045, Japan
| | - K Mimori
- Department of Surgery, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu 874-0838, Japan
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42
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Aoki Y, Watanabe T, Abe O, Kuwabara H, Yahata N, Takano Y, Iwashiro N, Natsubori T, Takao H, Kawakubo Y, Kasai K, Yamasue H. Oxytocin's neurochemical effects in the medial prefrontal cortex underlie recovery of task-specific brain activity in autism: a randomized controlled trial. Mol Psychiatry 2015; 20:447-53. [PMID: 25070538 PMCID: PMC4378254 DOI: 10.1038/mp.2014.74] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [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: 02/21/2014] [Revised: 05/02/2014] [Accepted: 06/06/2014] [Indexed: 01/22/2023]
Abstract
The neuropeptide oxytocin may be an effective therapeutic strategy for the currently untreatable social and communication deficits associated with autism. Our recent paper reported that oxytocin mitigated autistic behavioral deficits through the restoration of activity in the ventromedial prefrontal cortex (vmPFC), as demonstrated with functional magnetic resonance imaging (fMRI) during a socio-communication task. However, it is unknown whether oxytocin exhibited effects at the neuronal level, which was outside of the specific task examined. In the same randomized, double-blind, placebo-controlled, within-subject cross-over clinical trial in which a single dose of intranasal oxytocin (24 IU) was administered to 40 men with high-functioning autism spectrum disorder (UMIN000002241/000004393), we measured N-acetylaspartate (NAA) levels, a marker for neuronal energy demand, in the vmPFC using (1)H-magnetic resonance spectroscopy ((1)H-MRS). The differences in the NAA levels between the oxytocin and placebo sessions were associated with oxytocin-induced fMRI signal changes in the vmPFC. The oxytocin-induced increases in the fMRI signal could be predicted by the NAA differences between the oxytocin and placebo sessions (P=0.002), an effect that remained after controlling for variability in the time between the fMRI and (1)H-MRS scans (P=0.006) and the order of administration of oxytocin and placebo (P=0.001). Furthermore, path analysis showed that the NAA differences in the vmPFC triggered increases in the task-dependent fMRI signals in the vmPFC, which consequently led to improvements in the socio-communication difficulties associated with autism. The present study suggests that the beneficial effects of oxytocin are not limited to the autistic behavior elicited by our psychological task, but may generalize to other autistic behavioral problems associated with the vmPFC.
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Affiliation(s)
- Y Aoki
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - T Watanabe
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan,Department of Physiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - O Abe
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan,Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - H Kuwabara
- Department of Child Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - N Yahata
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Y Takano
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - N Iwashiro
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - T Natsubori
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - H Takao
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Y Kawakubo
- Department of Child Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Kasai
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - H Yamasue
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan,Japan Science and Technology Agency, CREST, Tokyo, Japan,Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan. E-mail:
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43
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Kono Y, Sakakibara T, Aoyama CP, Hotta C, Turnbull MM, Landee CP, Takano Y. Field-induced quantum criticality and universal temperature dependence of the magnetization of a spin-1/2 heisenberg chain. Phys Rev Lett 2015; 114:037202. [PMID: 25659018 DOI: 10.1103/physrevlett.114.037202] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Indexed: 06/04/2023]
Abstract
High-precision dc magnetization measurements have been made on Cu(C4H4N2) (NO3)2 in magnetic fields up to 14.7 T, slightly above the saturation field Hs=13.97 T, in the temperature range from 0.08 to 15 K. The magnetization curve and differential susceptibility at the lowest temperature show excellent agreement with exact theoretical results for the spin-1/2 Heisenberg antiferromagnet in one dimension. A broad peak is observed in magnetization measured as a function of temperature, signaling a crossover to a low-temperature Tomonaga-Luttinger-liquid regime. With an increasing field, the peak moves gradually to lower temperatures, compressing the regime, and, at Hs, the magnetization exhibits a strong upturn. This quantum critical behavior of the magnetization and that of the specific heat withstand quantitative tests against theory, demonstrating that the material is a practically perfect one-dimensional spin-1/2 Heisenberg antiferromagnet.
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Affiliation(s)
- Y Kono
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - T Sakakibara
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - C P Aoyama
- Department of Physics, University of Florida, Gainesville, Florida 32611-8440, USA
| | - C Hotta
- Department of Basic Science, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
| | - M M Turnbull
- Carlson School of Chemistry and Department of Physics, Clark University, Worcester, Massachusetts 01610-1477, USA
| | - C P Landee
- Carlson School of Chemistry and Department of Physics, Clark University, Worcester, Massachusetts 01610-1477, USA
| | - Y Takano
- Department of Physics, University of Florida, Gainesville, Florida 32611-8440, USA
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44
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Yang J, Thompson DJ, Takano Y. Characterizing Wheel Flat Impact Noise with an Efficient Time Domain Model. Notes on Numerical Fluid Mechanics and Multidisciplinary Design 2015. [DOI: 10.1007/978-3-662-44832-8_15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Abstract
Amelogenins are the most abundant protein species in forming dental enamel, taken to regulate crystal shape and crystal growth. Unprotonated amelogenins can bind protons, suggesting that amelogenins could regulate the pH in enamel in situ. We hypothesized that without amelogenins the enamel would acidify unless ameloblasts were buffered by alternative ways. To investigate this, we measured the mineral and chloride content in incisor enamel of amelogenin-knockout (AmelX(-/-)) mice and determined the pH of enamel by staining with methyl-red. Ameloblasts were immunostained for anion exchanger-2 (Ae2), a transmembrane pH regulator sensitive for acid that secretes bicarbonate in exchange for chloride. The enamel of AmelX(-/-) mice was 10-fold thinner, mineralized in the secretory stage 1.8-fold more than wild-type enamel and containing less chloride (suggesting more bicarbonate secretion). Enamel of AmelX(-/-) mice stained with methyl-red contained no acidic bands in the maturation stage as seen in wild-type enamel. Secretory ameloblasts of AmelX(-/-) mice, but not wild-type mice, were immunopositive for Ae2, and stained more intensely in the maturation stage compared with wild-type mice. Exposure of AmelX(-/-) mice to fluoride enhanced the mineral content in the secretory stage, lowered chloride, and intensified Ae2 immunostaining in the enamel organ in comparison with non-fluorotic mutant teeth. The results suggest that unprotonated amelogenins may regulate the pH of forming enamel in situ. Without amelogenins, Ae2 could compensate for the pH drop associated with crystal formation.
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Affiliation(s)
- J Guo
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute, Amsterdam, the Netherlands
| | - D M Lyaruu
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute, Amsterdam, the Netherlands
| | - Y Takano
- Section of Biostructural Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - C W Gibson
- Department of Anatomy and Cell Biology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - P K DenBesten
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of California in San Francisco, CA, USA
| | - A L J J Bronckers
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute, Amsterdam, the Netherlands
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46
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Paris E, Joseph B, Iadecola A, Sugimoto T, Olivi L, Demura S, Mizuguchi Y, Takano Y, Mizokawa T, Saini NL. Determination of local atomic displacements in CeO(1-x)F(x)BiS2 system. J Phys Condens Matter 2014; 26:435701. [PMID: 25299179 DOI: 10.1088/0953-8984/26/43/435701] [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] [Indexed: 06/04/2023]
Abstract
We have used Bi and Ce L3-edges extended x-ray absorption fine structure measurements to study local structure of CeO(1-x)F(x)BiS2 system as a function of F-substitution. The local structure of both BiS2 active layer and CeO1-xFx spacer layer changes systematically. The in-plane Bi-S1 distance decreases (ΔRmax ∼ 0.08 Å) and the out-of-plane Bi-S2 distance increases (ΔRmax ∼ 0.12 Å) with increasing F-content. On the other hand, the Ce-O/F distance increases (ΔRmax ∼ 0.2 Å) with a concomitant decrease of the Ce-S2 distance (ΔRmax ∼ 0.15 Å). Interestingly, the Bi-S1 distance is characterized by a large disorder that increases with F-content. The results provide useful information on the local atomic displacements in CeO(1-x)F(x)BiS2, that should be important for the understanding of the coexistence of superconductivity and low temperature ferromagnetism in this system.
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Affiliation(s)
- E Paris
- Dipartimento di Fisica, Università di Roma 'La Sapienza', P. le Aldo Moro 2, 00185 Roma, Italy
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Denholme SJ, Okazaki H, Demura S, Deguchi K, Fujioka M, Yamaguchi T, Takeya H, ElMassalami M, Fujiwara H, Wakita T, Yokoya T, Takano Y. Pressure-dependent magnetization and magnetoresistivity studies on tetragonal FeS (mackinawite): revealing its intrinsic metallic character. Sci Technol Adv Mater 2014; 15:055007. [PMID: 27877719 PMCID: PMC5099680 DOI: 10.1088/1468-6996/15/5/055007] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 08/07/2014] [Indexed: 06/05/2023]
Abstract
The transport and magnetic properties of the tetragonal Fe[Formula: see text]S were investigated using magnetoresistivity and magnetization within [Formula: see text] K, [Formula: see text] 70 kOe and [Formula: see text] 3.0 GPa. In addition, room-temperature x-ray diffraction and photoelectron spectroscopy were also applied. In contrast to previously reported nonmetallic character, Fe[Formula: see text]S is intrinsically metallic but due to a presence of a weak localization such metallic character is not exhibited below room temperature. An applied pressure reduces strongly this additional resistive contribution and as such enhances the temperature range of the metallic character which, for ∼3 GPa, is evident down to 75 K. The absence of superconductivity as well as the mechanism behind the weak localization will be discussed.
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Affiliation(s)
- S J Denholme
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, 305-0047, Japan
| | - H Okazaki
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, 305-0047, Japan
| | - S Demura
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, 305-0047, Japan
| | - K Deguchi
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, 305-0047, Japan
| | - M Fujioka
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, 305-0047, Japan
| | - T Yamaguchi
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, 305-0047, Japan
| | - H Takeya
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, 305-0047, Japan
| | - M ElMassalami
- Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro RJ, Brazil
| | - H Fujiwara
- Research Laboratory for Surface Science, Okayama University, Okayama, 700-8530, Japan
| | - T Wakita
- Research Laboratory for Surface Science, Okayama University, Okayama, 700-8530, Japan
| | - T Yokoya
- Research Laboratory for Surface Science, Okayama University, Okayama, 700-8530, Japan
| | - Y Takano
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, 305-0047, Japan
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Morosawa Y, Naito A, Watanabe T, Takano Y, Takase K. Magnetic properties of the layered oxypnictides (LnO)MnAs (Ln = La, Ce, Pr, Nd). EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20147507004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Takahashi Y, Sawada G, Kurashige J, Uchi R, Matsumura T, Ueo H, Takano Y, Eguchi H, Sudo T, Sugimachi K, Yamamoto H, Doki Y, Mori M, Mimori K. Amplification of PVT-1 is involved in poor prognosis via apoptosis inhibition in colorectal cancers. Br J Cancer 2013; 110:164-71. [PMID: 24196785 PMCID: PMC3887297 DOI: 10.1038/bjc.2013.698] [Citation(s) in RCA: 242] [Impact Index Per Article: 22.0] [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] [Received: 07/08/2013] [Revised: 10/08/2013] [Accepted: 10/11/2013] [Indexed: 12/16/2022] Open
Abstract
Background: We previously conducted gene expression microarray analyses to identify novel indicators for colorectal cancer (CRC) metastasis and prognosis from which we identified PVT-1 as a candidate gene. PVT-1, which encodes a long noncoding RNA, mapped to chromosome 8q24 whose copy-number amplification is one of the most frequent events in a wide variety of malignant diseases. However, PVT-1 molecular mechanism of action remains unclear. Methods: We conducted cell proliferation and invasion assays using colorectal cancer cell lines transfected with PVT-1siRNA or negative control siRNA. Gene expression microarray analyses on these cell lines were also carried out to investigate the molecular function of PVT-1. Further, we investigated the impact of PVT-1 expression on the prognosis of 164 colorectal cancer patients by qRT–PCR. Results: CRC cells transfected with PVT-1 siRNA exhibited significant loss of their proliferation and invasion capabilities. In these cells, the TGF-β signalling pathway and apoptotic signals were significantly activated. In addition, univariate and multivariate analysis revealed that PVT-1 expression level was an independent risk factor for overall survival of colorectal cancer patients. Conclusion: PVT-1, which maps to 8q24, generates antiapoptotic activity in CRC, and abnormal expression of PVT-1 was a prognostic indicator for CRC patients.
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Affiliation(s)
- Y Takahashi
- 1] Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan [2] Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita 565-0871, Japan
| | - G Sawada
- 1] Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan [2] Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita 565-0871, Japan
| | - J Kurashige
- Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan
| | - R Uchi
- Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan
| | - T Matsumura
- 1] Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan [2] Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita 565-0871, Japan
| | - H Ueo
- Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan
| | - Y Takano
- Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan
| | - H Eguchi
- Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan
| | - T Sudo
- Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan
| | - K Sugimachi
- Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan
| | - H Yamamoto
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita 565-0871, Japan
| | - Y Doki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita 565-0871, Japan
| | - M Mori
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita 565-0871, Japan
| | - K Mimori
- Department of Surgery, Kyushu University Beppu Hospital, Tsurumihara 4546, Beppu 874-0838, Japan
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Oda A, Yamaotsu N, Hirono S, Takano Y, Fukuyoshi S, Nakagaki R, Takahashi O. Evaluations of the conformational search accuracy of CAMDAS using experimental three-dimensional structures of protein-ligand complexes. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/454/1/012028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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