1
|
Lim AH, Varghese C, Sebaratnam GH, Schamberg G, Calder S, Gharibans AA, Andrews CN, Foong D, Ho V, Ishida S, Imai Y, Wise MR, O'Grady G. Effect of Menstrual Cycle and Menopause on Human Gastric Electrophysiology. Am J Physiol Gastrointest Liver Physiol 2024. [PMID: 38713629 DOI: 10.1152/ajpgi.00216.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 04/23/2024] [Indexed: 05/09/2024]
Abstract
Chronic gastroduodenal symptoms disproportionately affect females of childbearing age; however, the effect of menstrual cycling on gastric electrophysiology is poorly defined. To establish the effect of the menstrual cycle on gastric electrophysiology, healthy subjects underwent non-invasive Body Surface Gastric Mapping (BSGM; 8x8 array), with validated symptom logging App (Gastric AlimetryⓇ, New Zealand). Participants were premenopausal females in follicular (n=26) and luteal phases (n=18). Postmenopausal females (n=30) and males (n=51) were controls. Principal gastric frequency (PGF), BMI-adjusted amplitude, Gastric Alimetry Rhythm Index (GA-RI), fasted-fed amplitude ratio (ff-AR), meal response curves, and symptom burden were analysed. Menstrual cycle-related electrophysiological changes were then transferred to an established anatomically-accurate computational gastric fluid dynamics model (meal viscosity 0.1 Pas), to predict the impact on gastric mixing and emptying. PGF was significantly higher in the luteal vs. follicular phase (mean 3.21 cpm, SD (0.17) vs. 2.94 cpm, SD (0.17), p<0.001) and vs. males (3.01 cpm, SD (0.2), p<0.001). In the computational model, this translated to 8.1% higher gastric mixing strength and 5.3% faster gastric emptying for luteal versus follicular phases. Postmenopausal females also exhibited higher PGF than females in the follicular phase (3.10 cpm, SD (0.24) vs. 2.94 cpm, SD (0.17), p=0.01), and higher BMI-adjusted amplitude (40.7 µV (33.02-52.58) vs. 29.6 µV (26.15-39.65), p<0.001), GA-RI (0.60 (0.48-0.73) vs. 0.43 (0.30-0.60), p=0.005), and ff-AR (2.51 (1.79-3.47) vs. 1.48 (1.21-2.17), p=0.001) than males. There were no differences in symptoms. These results define variations in gastric electrophysiology with regard to human menstrual cycling and menopause.
Collapse
Affiliation(s)
- Alexandria H Lim
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - Chris Varghese
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | | | | | - Stefan Calder
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - Armen A Gharibans
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - Christopher N Andrews
- Division of Gastroenterology and Hepatology, University of Calgary, Calgary, AB, Canada
| | - Daphne Foong
- School of Medicine, Western Sydney University, Campbelltown, NSW, Australia
| | - Vincent Ho
- School of Medicine, Western Sydney University, Campbelltown, NSW, Australia
| | - Shunichi Ishida
- Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Yohsuke Imai
- Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Michelle R Wise
- Deparment of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand
| | | |
Collapse
|
2
|
Matsukawa Y, Naito Y, Nakane W, Kamizyo S, Miyazi T, Ishida S, Gotoh M. Validation and clinical utility of the Nagoya diagnostic criteria for detrusor underactivity in men. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00081-7] [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: 02/12/2023]
|
3
|
Matsukawa Y, Ishida S, Naito Y, Matsuo K, Ishikawa T, Gotoh M. Adiponectin predicts urodynamic detrusor underactivity: A prospective study of elderly men with lower urinary tract symptoms. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00106-9] [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: 02/12/2023]
|
4
|
Ebara R, Ishida S, Miyagawa T, Imai Y. Effects of peristaltic amplitude and frequency on gastric emptying and mixing: a simulation study. J R Soc Interface 2023; 20:20220780. [PMID: 36596453 PMCID: PMC9810435 DOI: 10.1098/rsif.2022.0780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/05/2022] [Indexed: 01/05/2023] Open
Abstract
The amplitude and frequency of peristaltic contractions are two major parameters for assessing gastric motility. However, it is not fully understood how these parameters affect the important functions of the stomach, such as gastric mixing and emptying. This study aimed to quantify the effects of peristaltic amplitude and frequency on gastric mixing and emptying using computational fluid dynamics simulation of gastric flow with an anatomically realistic model of the stomach. Our results suggest that both the increase and decrease in peristaltic amplitude have a significant impact on mixing strength and emptying rate. For example, when the peristaltic amplitude was 1.2 times higher than normal, the emptying rate was 2.7 times faster, whereas when the amplitude was half, the emptying rate was 4.2 times slower. Moreover, the emptying rate increased more than proportionally with the peristaltic frequency. The nearest contraction wave to the pylorus and the subsequent waves promoted gastric emptying. These results suggest the importance of maintaining parameters within normal ranges to achieve healthy gastric function.
Collapse
Affiliation(s)
- Rika Ebara
- Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Shunichi Ishida
- Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Taimei Miyagawa
- Graduate School of Science and Technology, Hirosaki University, Hirosaki, Japan
| | - Yohsuke Imai
- Graduate School of Engineering, Kobe University, Kobe, Japan
| |
Collapse
|
5
|
Ionescu AM, Ivan I, Crisan DN, Galluzzi A, Polichetti M, Ishida S, Iyo A, Eisaki H, Crisan A. Pinning potential in highly performant CaKFe4As4 superconductor from DC magnetic relaxation and AC multi-frequency susceptibility studies. Sci Rep 2022; 12:19132. [DOI: 10.1038/s41598-022-23879-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
AbstractWe have investigated the pinning potential of high-quality single crystals of superconducting material CaKFe4As4 having high critical current density and very high upper critical field using both magnetization relaxation measurements and frequency-dependent AC susceptibility. Preliminary studies of the superconducting transition and of the isothermal magnetization loops confirmed the high quality of the samples, while temperature dependence of the AC susceptibility in high magnetic fields show absolutely no dependence on the cooling conditions, hence, no magnetic history. From magnetization relaxation measurements were extracted the values of the normalized pinning potential U*, which reveals a clear crossover between elastic creep and plastic creep. The extremely high values of U*, up to 1200 K around the temperature of 20 K lead to a nearly zero value of the probability of thermally-activated flux jumps at temperatures of interest for high-field applications. The values of the creep exponents in the two creep regimes resulted from the analysis of the magnetization relaxation data are in complete agreement with theoretical models. Pinning potentials were also estimated, near the critical temperature, from AC susceptibility measurements, their values being close to those resulted (at the same temperature and DC field) from the magnetization relaxation data.
Collapse
|
6
|
Yoshida H, Ishida S, Yamamoto T, Ishikawa T, Nagata Y, Takeuchi K, Ueno H, Imai Y. Effect of cilia-induced surface velocity on cerebrospinal fluid exchange in the lateral ventricles. J R Soc Interface 2022; 19:20220321. [PMID: 35919976 PMCID: PMC9346361 DOI: 10.1098/rsif.2022.0321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Ciliary motility disorders are known to cause hydrocephalus. The instantaneous velocity of cerebrospinal fluid (CSF) flow is dominated by artery pulsation, and it remains unclear why ciliary dysfunction results in hydrocephalus. In this study, we investigated the effects of cilia-induced surface velocity on CSF flow using computational fluid dynamics. A geometric model of the human ventricles was constructed using medical imaging data. The CSF produced by the choroid plexus and cilia-induced surface velocity were given as the velocity boundary conditions at the ventricular walls. We developed healthy and reduced cilia motility models based on experimental data of cilia-induced velocity in healthy wild-type and Dpcd-knockout mice. The results indicate that there is almost no difference in intraventricular pressure between healthy and reduced cilia motility models. Additionally, it was found that newly produced CSF from the choroid plexus did not spread to the anterior and inferior horns of the lateral ventricles in the reduced cilia motility model. These findings suggest that a ciliary motility disorder could delay CSF exchange in the anterior and inferior horns of the lateral ventricles.
Collapse
Affiliation(s)
- Haruki Yoshida
- Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan
| | - Shunichi Ishida
- Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan
| | - Taiki Yamamoto
- Graduate School of Medicine, Nagoya University, Nagoya 466-8550, Japan
| | - Takayuki Ishikawa
- Graduate School of Medicine, Nagoya University, Nagoya 466-8550, Japan
| | - Yuichi Nagata
- Graduate School of Medicine, Nagoya University, Nagoya 466-8550, Japan
| | - Kazuhito Takeuchi
- Graduate School of Medicine, Nagoya University, Nagoya 466-8550, Japan
| | - Hironori Ueno
- Aichi University of Education, Kariya 448-8542, Japan
| | - Yohsuke Imai
- Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan
| |
Collapse
|
7
|
Ideta S, Johnston S, Yoshida T, Tanaka K, Mori M, Anzai H, Ino A, Arita M, Namatame H, Taniguchi M, Ishida S, Takashima K, Kojima KM, Devereaux TP, Uchida S, Fujimori A. Hybridization of Bogoliubov Quasiparticles between Adjacent CuO_{2} Layers in the Triple-Layer Cuprate Bi_{2}Sr_{2}Ca_{2}Cu_{3}O_{10+δ} Studied by Angle-Resolved Photoemission Spectroscopy. Phys Rev Lett 2021; 127:217004. [PMID: 34860085 DOI: 10.1103/physrevlett.127.217004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 07/08/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
Hybridization of Bogoliubov quasiparticles (BQPs) between the CuO_{2} layers in the triple-layer cuprate high-temperature superconductor Bi_{2}Sr_{2}Cu_{2}Cu_{3}O_{10+δ} is studied by angle-resolved photoemission spectroscopy (ARPES). In the superconducting state, an anticrossing gap opens between the outer- and inner-BQP bands, which we attribute primarily to interlayer single-particle hopping with possible contributions from interlayer Cooper pairing. We find that the d-wave superconducting gap of both BQP bands smoothly develops with momentum without an abrupt jump in contrast to a previous ARPES study. Hybridization between the BQPs also gradually increases in going from the off nodal to the antinodal region, which is explained by the momentum dependence of the interlayer single-particle hopping. As possible mechanisms for the enhancement of the superconducting transition temperature, the hybridization between the BQPs as well as the combination of phonon modes of the triple CuO_{2} layers and spin fluctuations represented by a four-well model are discussed.
Collapse
Affiliation(s)
- S Ideta
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- UVSOR-III Synchrotron, Institute for Molecular Science, Okazaki 444-8585, Japan
| | - S Johnston
- Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996, USA
| | - T Yoshida
- Department of Human and Environmental studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - K Tanaka
- UVSOR-III Synchrotron, Institute for Molecular Science, Okazaki 444-8585, Japan
| | - M Mori
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
| | - H Anzai
- Graduate School of Engineering, Osaka Prefecture University, Sakai 599-8531, Japan
- Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - A Ino
- Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan
- Department of Education and Creation Engineering, Kurume Institute of Technology, Fukuoka 2286-66, Japan
| | - M Arita
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan
| | - H Namatame
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan
| | - M Taniguchi
- Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan
| | - S Ishida
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
| | - K Takashima
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - K M Kojima
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- J-PARC Center and Institute of Materials Structure Science, KEK, Tsukuba, Ibaraki 305-0801, Japan
- Centre for Molecular and Materials Science, TRIUMF, 4004 Vancouver, Canada
| | - T P Devereaux
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Laboratory and Stanford University, Menlo Park, California 94025, USA
- Department of Materials Science and Engineering Stanford University, Stanford, California 94305, USA
| | - S Uchida
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
| | - A Fujimori
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Applied Physics, Waseda University, Shinjuku-ku, Tokyo 169-8555, Japan
| |
Collapse
|
8
|
Ishii Y, Aiba N, Ando M, Asakura N, Bierwage A, Cara P, Dzitko H, Edao Y, Gex D, Hasegawa K, Hayashi T, Hiwatari R, Hoshino T, Ikeda Y, Ishida S, Isobe K, Iwai Y, Jokinen A, Kasugai A, Kawamura Y, Kim JH, Kondo K, Kwon S, Lorenzo SC, Masuda K, Matsuyama A, Miyato N, Morishita K, Nakajima M, Nakajima N, Nakamichi M, Nozawa T, Ochiai K, Ohta M, Oyaidzu M, Ozeki T, Sakamoto K, Sakamoto Y, Sato S, Seto H, Shiroto T, Someya Y, Sugimoto M, Tanigawa H, Tokunaga S, Utoh H, Wang W, Watanabe Y, Yagi M. R&D Activities for Fusion DEMO in the QST Rokkasho Fusion Institute. Fusion Science and Technology 2021. [DOI: 10.1080/15361055.2021.1925030] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Y. Ishii
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Aiba
- National Institutes for Quantum and Radiological Science and Technology, Naka Fusion Institute, Naka City, Japan
| | - M. Ando
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Asakura
- National Institutes for Quantum and Radiological Science and Technology, Naka Fusion Institute, Naka City, Japan
| | - A. Bierwage
- National Institutes for Quantum and Radiological Science and Technology, Naka Fusion Institute, Naka City, Japan
| | - P. Cara
- IFMIF/EVEDA Project Team, Rokkasho-Vill., Japan
| | - H. Dzitko
- Fusion for Energy, Broader Approach, Garching, Germany
| | | | - D. Gex
- Fusion for Energy, Broader Approach, Garching, Germany
| | - K. Hasegawa
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Hayashi
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - R. Hiwatari
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Hoshino
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Ikeda
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Ishida
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Isobe
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Iwai
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - A. Jokinen
- IFMIF/EVEDA Project Team, Rokkasho-Vill., Japan
| | - A. Kasugai
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Kawamura
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - J. H. Kim
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Kondo
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Kwon
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. C. Lorenzo
- Fusion for Energy, Broader Approach, Barcelona, Spain
| | - K. Masuda
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - A. Matsuyama
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Miyato
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Morishita
- Kyoto University, Institute of Advanced Energy, Uji, Japan
| | - M. Nakajima
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Nakajima
- National Institute for Fusion Science, Department of Helical Plasma Research Rokkasho Research Center, Rokkasho-Vill., Japan
| | - M. Nakamichi
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Nozawa
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Ochiai
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Ohta
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Oyaidzu
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Ozeki
- NAT Corporation, Tohoku Branch Office, Rokkasho-Vill., Japan
| | - K. Sakamoto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Sakamoto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Sato
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - H. Seto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Shiroto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Someya
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Sugimoto
- NAT Corporation, Tohoku Branch Office, Rokkasho-Vill., Japan
| | - H. Tanigawa
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Tokunaga
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - H. Utoh
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - W. Wang
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Watanabe
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Yagi
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| |
Collapse
|
9
|
Takeishi N, Shigematsu T, Enosaki R, Ishida S, Ii S, Wada S. Development of a mesoscopic framework spanning nanoscale protofibril dynamics to macro-scale fibrin clot formation. J R Soc Interface 2021; 18:20210554. [PMID: 34753310 PMCID: PMC8580471 DOI: 10.1098/rsif.2021.0554] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 10/14/2021] [Indexed: 11/23/2022] Open
Abstract
Thrombi form a micro-scale fibrin network consisting of an interlinked structure of nanoscale protofibrils, resulting in haemostasis. It is theorized that the mechanical effect of the fibrin clot is caused by the polymeric protofibrils between crosslinks, or to their dynamics on a nanoscale order. Despite a number of studies, however, it is still unknown, how the nanoscale protofibril dynamics affect the formation of the macro-scale fibrin clot and thus its mechanical properties. A mesoscopic framework would be useful to tackle this multi-scale problem, but it has not yet been established. We thus propose a minimal mesoscopic model for protofibrils based on Brownian dynamics, and performed numerical simulations of protofibril aggregation. We also performed stretch tests of polymeric protofibrils to quantify the elasticity of fibrin clots. Our model results successfully captured the conformational properties of aggregated protofibrils, e.g., strain-hardening response. Furthermore, the results suggest that the bending stiffness of individual protofibrils increases to resist extension.
Collapse
Affiliation(s)
- Naoki Takeishi
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama Toyonaka, Osaka 560-8531, Japan
| | - Taiki Shigematsu
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama Toyonaka, Osaka 560-8531, Japan
| | - Ryogo Enosaki
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama Toyonaka, Osaka 560-8531, Japan
| | - Shunichi Ishida
- Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Satoshi Ii
- Graduate School of Systems Design, Tokyo Metropolitan University, 1-1 Minami-Osawa Hachioji, Tokyo 192-0397, Japan
| | - Shigeo Wada
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama Toyonaka, Osaka 560-8531, Japan
| |
Collapse
|
10
|
Ishida S, Kuroda Y, Horiuchi S, Aihoshi S, Jinno R, Komizu Y, Matsushita T. Evaluation of liver fibrosis by human hepatic stellate cell spheroids. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00529-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
11
|
Maeda K, Kusano M, Jinno R, Hoshino M, Inokawa H, Komizu Y, Tomoshige R, Matsushita T, Ishida S. Research on the induction of cellular differentiation of osteoblast-like cells using bioceramic culture carriers. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00495-1] [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: 10/20/2022]
|
12
|
Iwata T, Mizuno N, Ishida S, Kajiya M, Nagahara T, Kaneda-Ikeda E, Yoshioka M, Munenaga S, Ouhara K, Fujita T, Kawaguchi H, Kurihara H. Functional Regulatory Mechanisms Underlying Bone Marrow Mesenchymal Stem Cell Senescence During Cell Passages. Cell Biochem Biophys 2021; 79:321-336. [PMID: 33559812 DOI: 10.1007/s12013-021-00969-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2021] [Indexed: 12/22/2022]
Abstract
Mesenchymal stem cell (MSC) transplantation is an effective periodontal regenerative therapy. MSCs are multipotent, have self-renewal ability, and can differentiate into periodontal cells. However, senescence is inevitable for MSCs. In vitro, cell senescence can be induced by long-term culture with/without cell passage. However, the regulatory mechanism of MSC senescence remains unclear. Undifferentiated MSC-specific transcription factors can regulate MSC function. Herein, we identified the regulatory transcription factors involved in MSC senescence and elucidated their mechanisms of action. We cultured human MSCs (hMSCs) with repetitive cell passages to induce cell senescence and evaluated the mRNA and protein expression of cell senescence-related genes. Additionally, we silenced the cell senescence-induced transcription factors, GATA binding protein 6 (GATA6) and SRY-box 11 (SOX11), and investigated senescence-related signaling pathways. With repeated passages, the number of senescent cells increased, while the cell proliferation capacity decreased; GATA6 mRNA expression was upregulated and that of SOX11 was downregulated. Repetitive cell passages decreased Wnt and bone morphogenetic protein (BMP) signaling pathway-related gene expression. Silencing of GATA6 and SOX11 regulated Wnt and BMP signaling pathway-related genes and affected cell senescence-related genes; moreover, SOX11 silencing regulated GATA6 expression. Hence, we identified them as pair of regulatory transcription factors for cell senescence in hMSCs via the Wnt and BMP signaling pathways.
Collapse
Affiliation(s)
- T Iwata
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan.
| | - N Mizuno
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
| | - S Ishida
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
| | - M Kajiya
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
| | - T Nagahara
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
| | - E Kaneda-Ikeda
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
| | - M Yoshioka
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
| | - S Munenaga
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, 734-8553, Japan
| | - K Ouhara
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
| | - T Fujita
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
| | - H Kawaguchi
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, 734-8553, Japan
| | - H Kurihara
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553, Japan
| |
Collapse
|
13
|
Wang TH, Angeli TR, Ishida S, Du P, Gharibans A, Paskaranandavadivel N, Imai Y, Miyagawa T, Abell TL, Farrugia G, Cheng LK, O’Grady G. The influence of interstitial cells of Cajal loss and aging on slow wave conduction velocity in the human stomach. Physiol Rep 2021; 8:e14659. [PMID: 33355992 PMCID: PMC7757374 DOI: 10.14814/phy2.14659] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 12/14/2022] Open
Abstract
Loss of interstitial cells of Cajal (ICC) has been associated with gastric dysfunction and is also observed during normal aging at ~13% reduction per decade. The impact of ICC loss on gastric slow wave conduction velocity is currently undefined. This study correlated human gastric slow wave velocity with ICC loss and aging. High-resolution gastric slow wave mapping data were screened from a database of 42 patients with severe gastric dysfunction (n = 20) and controls (n = 22). Correlations were performed between corpus slow wave conduction parameters (frequency, velocity, and amplitude) and corpus ICC counts in patients, and with age in controls. Physiological parameters were further integrated into computational models of gastric mixing. Patients: ICC count demonstrated a negative correlation with slow wave velocity in the corpus (i.e., higher velocities with reduced ICC; r2 = .55; p = .03). ICC count did not correlate with extracellular slow wave amplitude (p = .12) or frequency (p = .84). Aging: Age was positively correlated with slow wave velocity in the corpus (range: 25-74 years; r2 = .32; p = .02). Age did not correlate with extracellular slow wave amplitude (p = .40) or frequency (p = .34). Computational simulations demonstrated that the gastric emptying rate would increase at higher slow wave velocities. ICC loss and aging are associated with a higher slow wave velocity. The reason for these relationships is unexplained and merit further investigation. Increased slow wave velocity may modulate gastric emptying higher, although in gastroparesis other pathological factors must dominate to prevent emptying.
Collapse
Affiliation(s)
| | - Timothy R. Angeli
- Auckland Bioengineering InstituteUniversity of AucklandAucklandNew Zealand
| | | | - Peng Du
- Auckland Bioengineering InstituteUniversity of AucklandAucklandNew Zealand
| | - Armen Gharibans
- Department of SurgeryUniversity of AucklandAucklandNew Zealand
- Auckland Bioengineering InstituteUniversity of AucklandAucklandNew Zealand
| | | | - Yohsuke Imai
- Graduate School of EngineeringKobe UniversityKobeJapan
| | - Taimei Miyagawa
- Graduate School of Science and TechnologyHirosaki UniversityHirosakiJapan
| | - Thomas L. Abell
- Division of GastroenterologyUniversity of LouisvilleLouisvilleKYUSA
| | | | - Leo K. Cheng
- Auckland Bioengineering InstituteUniversity of AucklandAucklandNew Zealand
| | - Gregory O’Grady
- Department of SurgeryUniversity of AucklandAucklandNew Zealand
- Auckland Bioengineering InstituteUniversity of AucklandAucklandNew Zealand
| |
Collapse
|
14
|
Matsukawa Y, Majima T, Funahashi Y, Ishida S, Naito Y, Kato M, Yamamoto T, Gotoh M. What are useful signs to differentiate detrusor underactivity from bladder outlet obstruction in men with non-neurogenic lower urinary tract symptoms? EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33563-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
15
|
Kikuchi T, Guionet A, Takahashi K, Koichi T, Ishida S, Terazawa T. Elimination Effect of Airborne Fungi Using Dielectric Barrier Discharges Driven by a Pulsed Power Generator. Plasma Med 2020. [DOI: 10.1615/plasmamed.2020036473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
16
|
Ohta J, Ishida S, Kawase T, Katori Y, Imai Y. A computational fluid dynamics simulation of liquid swallowing by impaired pharyngeal motion: bolus pathway and pharyngeal residue. Am J Physiol Gastrointest Liver Physiol 2019; 317:G784-G792. [PMID: 31566413 DOI: 10.1152/ajpgi.00082.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Common practices to improve the ability to swallow include modifying physical properties of foods and changing the posture of patients. Here, we quantified the effects of the viscosity of a liquid bolus and patient posture on the bolus pathway and pharyngeal residue using a computational fluid dynamics simulation. We developed a computational model of an impaired pharyngeal motion with a low pharyngeal pressure and no pharyngeal adaptation. We varied viscosities from 0.002 to 1 Pa·s and postures from -15° to 30° (from nearly vertical to forward leaning). In the absence of pharyngeal adaptation, a honey-like liquid bolus caused pharyngeal residue, particularly in the case of forward-leaning postures. Although the bolus speed was different among viscosities, the final pathway was only slightly different. The shape, location, and tilting of the epiglottis effectively invited a bolus to two lateral pathways, suggesting a high robustness of the swallowing process.NEW & NOTEWORTHY Thickening agents are often used for patients with dysphagia. An increase in bolus viscosity not only reduces the risk of aspiration but also can cause a residual volume in the pharynx. Because information obtained from videofluoroscopic swallowing studies is only two-dimensional, measurement of pharyngeal residue is experimentally difficult. We successfully quantified the three-dimensional bolus pathway and the pharyngeal residual volume using computational modeling and simulation.
Collapse
Affiliation(s)
- Jun Ohta
- Department of Otorhinolaryngology and Head and Neck Surgery, Tohoku University, Sendai, Japan
| | - Shunichi Ishida
- Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Tetsuaki Kawase
- Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan.,Department of Audiology, Tohoku University, Sendai, Japan
| | - Yukio Katori
- Department of Otorhinolaryngology and Head and Neck Surgery, Tohoku University, Sendai, Japan
| | - Yohsuke Imai
- Graduate School of Engineering, Kobe University, Kobe, Japan
| |
Collapse
|
17
|
Ishida S, Miyagawa T, O'Grady G, Cheng LK, Imai Y. Quantification of gastric emptying caused by impaired coordination of pyloric closure with antral contraction: a simulation study. J R Soc Interface 2019; 16:20190266. [PMID: 31387481 PMCID: PMC6731493 DOI: 10.1098/rsif.2019.0266] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 07/04/2019] [Indexed: 12/18/2022] Open
Abstract
Proper coordination of gastric motor functions is required for healthy gastric emptying. However, pyloric function may be impaired by functional disorders or surgical procedures. Here, we show how coordination between pyloric closure and antral contraction affects the emptying of liquid contents. We numerically simulated fluid dynamics using an anatomically realistic gastrointestinal geometry. Peristaltic contractions in the proximal stomach resulted in gastric emptying at a rate of 3-8 ml min-1. When the pylorus was unable to close, the emptying rate increased to 10-30 ml min-1, and instantaneous retrograde flow from the duodenum to the antrum occurred during antral relaxation. Rapid emptying occurred if the pylorus began to open during the terminal antral contraction, and the emptying rate was negative if the pylorus only opened during the antral relaxation phase. Our results showed that impaired coordination between antral contraction and pyloric closure can result in delayed gastric emptying, rapid gastric emptying and bile reflux.
Collapse
Affiliation(s)
- Shunichi Ishida
- Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
| | - Taimei Miyagawa
- Graduate School of Science and Technology, Hirosaki University, Hirosaki, Japan
| | - Gregory O'Grady
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - Leo K. Cheng
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
- Riddet Institute, Palmerston North, New Zealand
| | - Yohsuke Imai
- Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
| |
Collapse
|
18
|
Kamada H, Ota H, Nakamura M, Imai Y, Ishida S, Sun W, Sakatsume K, Yoshioka I, Saiki Y, Takase K. Perioperative Hemodynamic Changes in the Thoracic Aorta in Patients With Aortic Valve Stenosis: A Prospective Serial 4D-Flow MRI Study. Semin Thorac Cardiovasc Surg 2019; 32:25-34. [PMID: 31323320 DOI: 10.1053/j.semtcvs.2019.07.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 07/11/2019] [Indexed: 01/25/2023]
Abstract
This study investigated hemodynamic changes in the thoracic aorta and aortic arch branches before and after aortic valve replacement (AVR) by 4D-flow MRI in patients with aortic valve stenosis (AS). Thoracic 4D-flow MRI was performed in 10 AS patients before and after AVR (mean 27 ± 1.9 days). Fifteen aortic planes and 3 aortic arch branches planes were set to evaluate the mean volume flow rate in each plane during a cardiac cycle and the angle between the main flow direction in a specified plane and the axial direction of the aorta. We also focused on the distribution and magnitude of helicity density to evaluate the flow complexity. A significant increase in the volume flow rate after AVR was found in the ascending aorta (before 59.2 ± 8.7 mL/s vs after 77.3 ± 6.2 mL/s, P < 0.05) and the aortic arch branches (before 26.5 ± 2.8 mL/s vs after 35.8 ± 3.3 mL/s, P < 0.001). The flow angle significantly decreased in the ascending aorta (before 39.2 ± 2.7 degree vs after 25.2 ± 1.7°, P < 0.0001) and the arch aorta (before 19.3 ± 2.0 degree vs after 13.4 ± 0.9°, P < 0.001). The volume flow rate in the ascending aorta and the arch branches increased within 1 month after AVR, showing an increased blood supply to the upper body, including to the brain. The postoperative change was accompanied with an increased blood flow in the ascending aorta and a decreased flow complexity proximal to the arch branches.
Collapse
Affiliation(s)
- Hiroki Kamada
- Department of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.
| | - Hideki Ota
- Department of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan
| | - Masanori Nakamura
- Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Nagoya, Japan
| | - Yohsuke Imai
- Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Shunichi Ishida
- Graduate School of Engineering Science, Osaka University, Osaka, Japan
| | - Wenyu Sun
- Department of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan
| | - Ko Sakatsume
- Division of Cardiovascular Surgery, Tohoku University Hospital, Sendai, Japan
| | - Ichiro Yoshioka
- Division of Cardiovascular Surgery, Tohoku University Hospital, Sendai, Japan
| | - Yoshikatsu Saiki
- Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kei Takase
- Department of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan
| |
Collapse
|
19
|
Meinero M, Caglieris F, Pallecchi I, Lamura G, Ishida S, Eisaki H, Continenza A, Putti M. In-plane and out-of-plane properties of a BaFe 2As 2 single crystal. J Phys Condens Matter 2019; 31:214003. [PMID: 30888969 DOI: 10.1088/1361-648x/ab080b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Anisotropy of transport and magnetic properties of parent compounds of iron based superconductors is a key ingredient of superconductivity. In this work, we investigate in-plane and out-of-plane properties, namely thermal, electric, thermoelectric transport and magnetic susceptibility in a high quality BaFe2As2 single crystal of the 122 parent compound, using a combined experimental and theoretical approach. Combining the ab initio calculation of the band structure and the measured in-plane and out-of-plane resistivity, we evaluate the scattering rates which turn out to be strongly anisotropic and determined by spin excitations in the antiferromagnetic state. The observed anisotropy of thermal conductivity is discussed in terms of anisotropy of sound velocities which we estimate to be [Formula: see text]. Remarkably, we find that thermal conductivity is characterized by a sizeable electronic contribution at low temperature, which is ascribed to the high purity of our crystal.
Collapse
Affiliation(s)
- M Meinero
- Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy. CNR-SPIN, Corso Perrone 24, 16152 Genova, Italy
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Ishida S, Horiuchi S, kuroda Y, Fujii R, Kim SR, Kanda Y. DNA microarray analysis on characteristics of hepatocyte-like cells derived from human iPS cells for the application to the cell based drug safety tests. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.957] [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: 10/28/2022]
|
21
|
Satoh T, Sugiura S, Shin K, Onuki-Nagasaki R, Ishida S, Kikuchi K, Kakiki M, Kanamori T. A multi-throughput multi-organ-on-a-chip system on a plate formatted pneumatic pressure-driven medium circulation platform. Lab Chip 2017; 18:115-125. [PMID: 29184959 DOI: 10.1039/c7lc00952f] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
This paper reports a multi-throughput multi-organ-on-a-chip system formed on a pneumatic pressure-driven medium circulation platform with a microplate-sized format as a novel type of microphysiological system. The pneumatic pressure-driven platform enabled parallelized multi-organ experiments (i.e. simultaneous operation of multiple multi-organ culture units) and pipette-friendly liquid handling for various conventional cell culture experiments, including cell seeding, medium change, live/dead staining, cell growth analysis, gene expression analysis of collected cells, and liquid chromatography-mass spectrometry analysis of chemical compounds in the culture medium. An eight-throughput two-organ system and a four-throughput four-organ system were constructed on a common platform, with different microfluidic plates. The two-organ system, composed of liver and cancer models, was used to demonstrate the effect of an anticancer prodrug, capecitabine (CAP), whose metabolite 5-fluorouracil (5-FU) after metabolism by HepaRG hepatic cells inhibited the proliferation of HCT-116 cancer cells. The four-organ system, composed of intestine, liver, cancer, and connective tissue models, was used to demonstrate evaluation of the effects of 5-FU and two prodrugs of 5-FU (CAP and tegafur) on multiple organ models, including cancer and connective tissue.
Collapse
Affiliation(s)
- T Satoh
- Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Hirose T, Kimura F, Tani H, Ota S, Nakamura Y, Shigekiyo T, Unoda K, Ishida S, Nakajima H, Arawaka S. Prolonged survival by non-invasive ventilation and the factors relating the switch to invasive ventilation in Japanese patients with ALS. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.593] [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: 10/18/2022]
|
23
|
Shigekiyo T, Unoda K, Ishida S, Nakajima H, Kimura H, Arawaka S. Evaluation of DAT-SPECT and 123I-MIBG myocardial scintigraphy in the diagnosis and staging of Parkinson’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2691] [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: 10/18/2022]
|
24
|
Motoki M, Yoshimoto Y, Ishida S, Nakajima H, Kimura F, Arawaka S, Sato T, Tada M, Kakita A. Neuronal intranuclear inclusion disease showing eosinophilic intranuclear inclusion bodies in the renal biopsy performed 12 years ago: A case study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2738] [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: 10/18/2022]
|
25
|
Ishida S, Unoda K, Yamane K, Hosokawa T, Nakajima H, Kimura F, Sugino M, Arawaka S. Early morning off symptom in patients with Parkinson disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1000] [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: 10/18/2022]
|
26
|
Kakiuchi K, Motoki M, Sano E, Ota S, Unoda K, Hosokawa T, Ishida S, Nakajima H, Kimura F, Arawaka S. Evaluation of muscle MRI pattern in neuromuscular disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1719] [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: 10/18/2022]
|
27
|
Sugie T, Hatae T, Koide Y, Fujita T, Kusama Y, Nishitani T, Isayama A, Sato M, Shinohara K, Asakura N, Konoshima S, Kubo H, Takenaga H, Kawano Y, Kondoh T, Nagashima A, Fukuda T, Sunaoshi H, Naito O, Kitamura S, Tsukahara Y, Sakasai A, Sakamoto Y, Suzuki T, Tobita K, Nemoto M, Morioka A, Ishikawa M, Ishida S, Isei N, Oyama N, Neyatani Y, Itami K, Sakurai S, Tamai H, Tsuchiya K, Higashijima S, Nakano T, Nagaya S, Chiba S, Lee S, Shitomi M. Diagnostics System of JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a242] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Sugie
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Hatae
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Koide
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Fujita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Kusama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Nishitani
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Isayama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Sato
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Shinohara
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - N. Asakura
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Konoshima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Kubo
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Takenaga
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Kawano
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Kondoh
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Nagashima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Fukuda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Sunaoshi
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - O. Naito
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Kitamura
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Tsukahara
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Sakasai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Sakamoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Suzuki
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Tobita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Nemoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Morioka
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Ishikawa
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Ishida
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - N. Isei
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - N. Oyama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Neyatani
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Itami
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Sakurai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Tamai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Tsuchiya
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Higashijima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Nakano
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Nagaya
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Chiba
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Lee
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Shitomi
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| |
Collapse
|
28
|
Kamada Y, Fujita T, Ishida S, Kikuchi M, Ide S, Takizuka T, Shirai H, Koide Y, Fukuda T, Hosogane N, Tsuchiya K, Hatae T, Takenaga H, Sato M, Nakamura H, Naito O, Asakura N, Kubo H, Higashijima S, Miura Y, Yoshino R, Shimizu K, Ozeki T, Hirayama T, Mori M, Sakamoto Y, Kawano Y, Isayama A, Ushigusa K, Ikeda Y, Kimura H, Fujii T, Imai T, Nagami M, Takeji S, Oikawa T, Suzuki T, Nakano T, Oyama N, Sakurai S, Konoshima S, Sugie T, Tobita K, Kondoh T, Tamai H, Neyatani Y, Sakasai A, Kusama Y, Itami K, Shimada M, Ninomiya H, Urano H. Fusion Plasma Performance and Confinement Studies on JT-60 and JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a227] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Kamada
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Fujita
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Ishida
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Kikuchi
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Ide
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Takizuka
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Shirai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Koide
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Fukuda
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - N. Hosogane
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Tsuchiya
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Hatae
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Takenaga
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Sato
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Nakamura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - O. Naito
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - N. Asakura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Kubo
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Higashijima
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Miura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - R. Yoshino
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Shimizu
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Ozeki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Hirayama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Mori
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Sakamoto
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Kawano
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - A. Isayama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Ushigusa
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Ikeda
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Kimura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Fujii
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Imai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Nagami
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Takeji
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Oikawa
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Suzuki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Nakano
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - N. Oyama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Sakurai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Konoshima
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Sugie
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Tobita
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Kondoh
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Tamai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Neyatani
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - A. Sakasai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Kusama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Itami
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Shimada
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Ninomiya
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | | |
Collapse
|
29
|
Takeji S, Isayama A, Ozeki T, Tokuda S, Ishii Y, Oikawa T, Ishida S, Kamada Y, Neyatani Y, Yoshino R, Takizuka T, Hayashi N, Fujita T, Kurita G, Matsumoto T, Tuda T. Magnetohydrodynamic Stability of Improved Confinement Plasmas in JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a229] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Takeji
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - A. Isayama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Ozeki
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - S. Tokuda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - Y. Ishii
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Oikawa
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - S. Ishida
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - Y. Kamada
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - Y. Neyatani
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - R. Yoshino
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Takizuka
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - N. Hayashi
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Fujita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - G. Kurita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Matsumoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Tuda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | | |
Collapse
|
30
|
Ishida S, Kato M, Fujita T, Funahashi Y, Sassa N, Matsukawa Y, Yoshino Y, Yamamoto T, Katsuno T, Maruyama S, Gotoh M. Calcineurin Inhibitor–Induced Pain Syndrome in ABO-Incompatible Living Kidney Transplantation: A Case Report. Transplant Proc 2017; 49:163-166. [DOI: 10.1016/j.transproceed.2016.11.007] [Citation(s) in RCA: 3] [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: 10/20/2022]
|
31
|
Miyagawa T, Imai Y, Ishida S, Ishikawa T. Relationship between gastric motility and liquid mixing in the stomach. Am J Physiol Gastrointest Liver Physiol 2016; 311:G1114-G1121. [PMID: 27789458 DOI: 10.1152/ajpgi.00346.2016] [Citation(s) in RCA: 11] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 10/25/2016] [Indexed: 01/31/2023]
Abstract
The relationship between gastric motility and the mixing of liquid food in the stomach was investigated with a numerical analysis. Three parameters of gastric motility were considered: the propagation velocity, frequency, and terminal acceleration of peristaltic contractions. We simulated gastric flow with an anatomically realistic geometric model of the stomach, considering free surface flow and moving boundaries. When a peristaltic contraction approaches the pylorus, retropulsive flow is generated in the antrum. Flow separation then occurs behind the contraction. The extent of flow separation depends on the Reynolds number (Re), which quantifies the inertial forces due to the peristaltic contractions relative to the viscous forces of the gastric contents; no separation is observed at low Re, while an increase in reattachment length is observed at high Re. While mixing efficiency is nearly constant for low Re, it increases with Re for high Re because of flow separation. Hence, the effect of the propagation velocity, frequency, or terminal acceleration of peristaltic contractions on mixing efficiency increases with Re.
Collapse
Affiliation(s)
- Taimei Miyagawa
- Graduate School of Biomedical Engineering, Tohoku University, Aoba, Sendai, Japan; and
| | - Yohsuke Imai
- School of Engineering, Tohoku University, Aoba, Sendai, Japan
| | - Shunichi Ishida
- Graduate School of Biomedical Engineering, Tohoku University, Aoba, Sendai, Japan; and
| | - Takuji Ishikawa
- Graduate School of Biomedical Engineering, Tohoku University, Aoba, Sendai, Japan; and.,School of Engineering, Tohoku University, Aoba, Sendai, Japan
| |
Collapse
|
32
|
Takeishi N, Imai Y, Ishida S, Omori T, Kamm RD, Ishikawa T. Cell adhesion during bullet motion in capillaries. Am J Physiol Heart Circ Physiol 2016; 311:H395-403. [PMID: 27261363 DOI: 10.1152/ajpheart.00241.2016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/31/2016] [Indexed: 01/13/2023]
Abstract
A numerical analysis is presented of cell adhesion in capillaries whose diameter is comparable to or smaller than that of the cell. In contrast to a large number of previous efforts on leukocyte and tumor cell rolling, much is still unknown about cell motion in capillaries. The solid and fluid mechanics of a cell in flow was coupled with a slip bond model of ligand-receptor interactions. When the size of a capillary was reduced, the cell always transitioned to "bullet-like" motion, with a consequent decrease in the velocity of the cell. A state diagram was obtained for various values of capillary diameter and receptor density. We found that bullet motion enables firm adhesion of a cell to the capillary wall even for a weak ligand-receptor binding. We also quantified effects of various parameters, including the dissociation rate constant, the spring constant, and the reactive compliance on the characteristics of cell motion. Our results suggest that even under the interaction between P-selectin glycoprotein ligand-1 (PSGL-1) and P-selectin, which is mainly responsible for leukocyte rolling, a cell is able to show firm adhesion in a small capillary. These findings may help in understanding such phenomena as leukocyte plugging and cancer metastasis.
Collapse
Affiliation(s)
- Naoki Takeishi
- Graduate School of Biomedical Engineering, Tohoku University, Aoba, Sendai, Japan
| | - Yohsuke Imai
- School of Engineering, Tohoku University, Aoba, Sendai, Japan;
| | - Shunichi Ishida
- Graduate School of Biomedical Engineering, Tohoku University, Aoba, Sendai, Japan
| | - Toshihiro Omori
- School of Engineering, Tohoku University, Aoba, Sendai, Japan
| | - Roger D Kamm
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts; and Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Takuji Ishikawa
- Graduate School of Biomedical Engineering, Tohoku University, Aoba, Sendai, Japan; School of Engineering, Tohoku University, Aoba, Sendai, Japan
| |
Collapse
|
33
|
Ishida S, Shibuya Y, Kobayashi M, Komori T. Assessing stomatognathic performance after mandibulectomy according to the method of mandibular reconstruction. Int J Oral Maxillofac Surg 2015; 44:948-55. [DOI: 10.1016/j.ijom.2015.03.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 01/13/2015] [Accepted: 03/16/2015] [Indexed: 01/08/2023]
|
34
|
Nagao T, Oshikawa G, Ishida S, Akiyama H, Umezawa Y, Nogami A, Kurosu T, Miura O. A novel MYD88 mutation, L265RPP, in Waldenström macroglobulinemia activates the NF-κB pathway to upregulate Bcl-xL expression and enhances cell survival. Blood Cancer J 2015; 5:e314. [PMID: 25978434 PMCID: PMC4476015 DOI: 10.1038/bcj.2015.36] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- T Nagao
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - G Oshikawa
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - S Ishida
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Akiyama
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Y Umezawa
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - A Nogami
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - T Kurosu
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - O Miura
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| |
Collapse
|
35
|
Nomoto R, Maruyama F, Ishida S, Tohya M, Sekizaki T, Osawa R. Reappraisal of the taxonomy of Streptococcus suis serotypes 20, 22 and 26: Streptococcus parasuis sp. nov. Int J Syst Evol Microbiol 2015; 65:438-443. [DOI: 10.1099/ijs.0.067116-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [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] Open
Abstract
In order to clarify the taxonomic position of serotypes 20, 22 and 26 of
Streptococcus suis
, biochemical and molecular genetic studies were performed on isolates (SUT-7, SUT-286T, SUT-319, SUT-328 and SUT-380) reacted with specific antisera of serotypes 20, 22 or 26 from the saliva of healthy pigs as well as reference strains of serotypes 20, 22 and 26. Comparative recN gene sequencing showed high genetic relatedness among our isolates, but marked differences from the type strain
S. suis
NCTC 10234T, i.e. 74.8–75.7 % sequence similarity. The genomic relatedness between the isolates and other strains of species of the genus
Streptococcus
, including
S. suis,
was calculated using the average nucleotide identity values of whole genome sequences, which indicated that serotypes 20, 22 and 26 should be removed taxonomically from
S. suis
and treated as a novel genomic species. Comparative sequence analysis revealed 99.0–100 % sequence similarities for the 16S rRNA genes between the reference strains of serotypes 20, 22 and 26, and our isolates. Isolate STU-286T had relatively high 16S rRNA gene sequence similarity with
S. suis
NCTC 10234T (98.8 %). SUT-286T could be distinguished from
S. suis
and other closely related species of the genus
Streptococcus
using biochemical tests. Due to its phylogenetic and phenotypic similarities to
S. suis
we propose naming the novel species Streptococcus parasuis sp. nov., with SUT-286T ( = JCM 30273T = DSM 29126T) as the type strain.
Collapse
Affiliation(s)
- R. Nomoto
- Organization for Advanced Science and Technology, Kobe University, Rokko-dai 1-1, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - F. Maruyama
- Graduate School of Medical and Dental Sciences, Section of Bacterial Phathogenesis, Tokyo Medical and Dental University, Yushima 45-5-1, Bunkyo-ku, Tokyo 113-8510, Japan
| | - S. Ishida
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan
| | - M. Tohya
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan
| | - T. Sekizaki
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Ro Osawa
- Department of Bioresource Sciences, Graduate School of Agricultural Sciences, Kobe University, Rokko-dai 1-1, Nada-ku, Kobe, Hyogo 657-8501, Japan
| |
Collapse
|
36
|
Morioka A, Sato S, Ochiai K, Sakasai A, Hori J, Yamauchi M, Nishitani T, Kaminaga A, Masaki K, Sakurai S, Hayashi T, Matsukawa M, Tamai H, Ishida S. Neutron Tranamission Experiment of Boron-doped Resin for the JT-60SC Neutron Shield using 2.45 Mev Neutron Source. J NUCL SCI TECHNOL 2014. [DOI: 10.1080/00223131.2004.10875657] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
37
|
Nakajima M, Ishida S, Tanaka T, Kihou K, Tomioka Y, Saito T, Lee CH, Fukazawa H, Kohori Y, Kakeshita T, Iyo A, Ito T, Eisaki H, Uchida S. Normal-state charge dynamics in doped BaFe₂As₂: roles of doping and necessary ingredients for superconductivity. Sci Rep 2014; 4:5873. [PMID: 25077444 PMCID: PMC5376192 DOI: 10.1038/srep05873] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [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: 01/28/2014] [Accepted: 07/11/2014] [Indexed: 11/30/2022] Open
Abstract
In high-transition-temperature superconducting cuprates and iron arsenides, chemical doping plays an important role in inducing superconductivity. Whereas in the cuprate case, the dominant role of doping is to inject charge carriers, the role for the iron arsenides is complex owing to carrier multiplicity and the diversity of doping. Here, we present a comparative study of the in-plane resistivity and the optical spectrum of doped BaFe2As2, which allows for separation of coherent (itinerant) and incoherent (highly dissipative) charge dynamics. The coherence of the system is controlled by doping, and the doping evolution of the charge dynamics exhibits a distinct difference between electron and hole doping. It is found in common with any type of doping that superconductivity with high transition temperature emerges when the normal-state charge dynamics maintains incoherence and when the resistivity associated with the coherent channel exhibits dominant temperature-linear dependence.
Collapse
Affiliation(s)
- M Nakajima
- 1] Department of Physics, University of Tokyo, Tokyo 113-0033, Japan [2] National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan [3] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan [4]
| | - S Ishida
- 1] Department of Physics, University of Tokyo, Tokyo 113-0033, Japan [2] National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan [3] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| | - T Tanaka
- 1] Department of Physics, University of Tokyo, Tokyo 113-0033, Japan [2] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| | - K Kihou
- 1] National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan [2] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| | - Y Tomioka
- 1] National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan [2] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| | - T Saito
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - C H Lee
- 1] National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan [2] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| | - H Fukazawa
- 1] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan [2] Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - Y Kohori
- 1] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan [2] Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - T Kakeshita
- 1] Department of Physics, University of Tokyo, Tokyo 113-0033, Japan [2] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| | - A Iyo
- 1] National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan [2] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| | - T Ito
- 1] National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan [2] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| | - H Eisaki
- 1] National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan [2] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| | - S Uchida
- 1] Department of Physics, University of Tokyo, Tokyo 113-0033, Japan [2] JST, Transformative Research-Project on Iron Pnictides (TRIP), Tokyo 102-0075, Japan
| |
Collapse
|
38
|
Picard F, Makrythanasis P, Navarro V, Ishida S, de Bellescize J, Ville D, Weckhuysen S, Fosselle E, Suls A, De Jonghe P, Vasselon Raina M, Lesca G, Depienne C, An-Gourfinkel I, Vlaicu M, Baulac M, Mundwiller E, Couarch P, Combi R, Ferini-Strambi L, Gambardella A, Antonarakis SE, Leguern E, Steinlein O, Baulac S. DEPDC5 mutations in families presenting as autosomal dominant nocturnal frontal lobe epilepsy. Neurology 2014; 82:2101-6. [DOI: 10.1212/wnl.0000000000000488] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
39
|
Kawagoe H, Ishida S, Aramaki M, Sakakibara Y, Omoda E, Kataura H, Nishizawa N. Development of a high power supercontinuum source in the 1.7 μm wavelength region for highly penetrative ultrahigh-resolution optical coherence tomography. Biomed Opt Express 2014; 5:932-43. [PMID: 24688825 PMCID: PMC3959847 DOI: 10.1364/boe.5.000932] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 02/15/2014] [Accepted: 02/18/2014] [Indexed: 05/19/2023]
Abstract
We developed a high power supercontinuum source at a center wavelength of 1.7 μm to demonstrate highly penetrative ultrahigh-resolution optical coherence tomography (UHR-OCT). A single-wall carbon nanotube dispersed in polyimide film was used as a transparent saturable absorber in the cavity configuration and a high-repetition-rate ultrashort-pulse fiber laser was realized. The developed SC source had an output power of 60 mW, a bandwidth of 242 nm full-width at half maximum, and a repetition rate of 110 MHz. The average power and repetition rate were approximately twice as large as those of our previous SC source [20]. Using the developed SC source, UHR-OCT imaging was demonstrated. A sensitivity of 105 dB and an axial resolution of 3.2 μm in biological tissue were achieved. We compared the UHR-OCT images of some biological tissue samples measured with the developed SC source, the previous one, and one operating in the 1.3 μm wavelength region. We confirmed that the developed SC source had improved sensitivity and penetration depth for low-water-absorption samples.
Collapse
Affiliation(s)
- H. Kawagoe
- Dept. Electrical Engineering and Computer Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - S. Ishida
- Dept. Electrical Engineering and Computer Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - M. Aramaki
- Dept. Electrical Engineering and Computer Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Y. Sakakibara
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
- JST, CREST, Kawaguchi, Saitama 330-0012, Japan
| | - E. Omoda
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
| | - H. Kataura
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
- JST, CREST, Kawaguchi, Saitama 330-0012, Japan
| | - N. Nishizawa
- Dept. Electrical Engineering and Computer Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| |
Collapse
|
40
|
Hayami H, Yamaguchi O, Ishida S, Koide Y, Gotoh T. Serum phosphate concentration during the rewarming period after deep hypothermic circulatory arrest. Crit Care 2014. [PMCID: PMC4069994 DOI: 10.1186/cc13691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
41
|
Abstract
A novel galacto-oligosaccharide (GOS) was administered by gavage to groups (10 males and 10 females) of Sprague-Dawley specific pathogen-free rats for 6 weeks from day 4 after birth at doses of 0, 500, 1000, or 2000 mg/kg/day. Each pup was subjected to a variety of observations to examine for development effects/changes after birth: general condition, clinical signs, functional examinations, grip strength and spontaneous movement, body weight and feed consumption, external differentiation, ophthalmological examination, urinalysis (including water consumption), hematology, blood chemistry, necropsy, organ weight, and histopathology. During the study period, no deaths occurred in any group and there were no observed effects from administration of GOS. Therefore, it was concluded that GOS had no effects on the development of animals 4 days after birth. Since, there were no abnormalities due to administration of GOS in the macroscopic examination, organ weight or histopathology of the reproductive organs or differentiation (incisor eruption and eyelid opening) of males or females, it was concluded that repeated oral administration of GOS at 2000 mg/kg/day for 6 weeks from day 4 after birth hadno effects on postnatal development. The no observed effect level of GOS by repeated oral administration for 6 weeks from day 4 after birth was 2000 mg/kg/day for both males and females under the conditions of this study.
Collapse
Affiliation(s)
- T Kobayash
- Yakult Central Institute for Microbiological Research, Yakult Honsha Co., Ltd, Yaho Kunitachi, Tokyo, Japan
| | - S Ishida
- Gotemba Laboratory, Bozo Research Center Inc, Shizuoka, Japan
| | - K Kaneko
- Yakult Central Institute for Microbiological Research, Yakult Honsha Co., Ltd, Yaho Kunitachi, Tokyo, Japan
| | - M Onoue
- Yakult Central Institute for Microbiological Research, Yakult Honsha Co., Ltd, Yaho Kunitachi, Tokyo, Japan
| |
Collapse
|
42
|
Shibuya Y, Ishida S, Hasegawa T, Kobayashi M, Nibu K, Komori T. Evaluating the masticatory function after mandibulectomy with colour-changing chewing gum. J Oral Rehabil 2013; 40:484-90. [PMID: 23691949 DOI: 10.1111/joor.12066] [Citation(s) in RCA: 10] [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] [Accepted: 04/18/2013] [Indexed: 11/30/2022]
Abstract
The aim of this study was to clarify the usefulness of colour-changing gum in evaluating masticatory performance after mandibulectomy. Thirty-nine patients who underwent mandibulectomy between 1982 and 2010 at Kobe University Hospital were recruited in this study. There were 21 male and 18 female subjects with a mean age of 64·7 years (range: 12-89 years) at the time of surgery. The participants included six patients who underwent marginal mandibulectomy, 21 patients who underwent segmental mandibulectomy and 12 patients who underwent hemimandibulectomy. The masticatory function was evaluated using colour-changing chewing gum, gummy jelly and a modified Sato's questionnaire. In all cases, the data were obtained more than 3 months after completing the patient's final prosthesis. The colour-changing gum scores correlated with both the gummy jelly scores (r = 0·634, P < 0·001) and the total scores of the modified Sato's questionnaire (r = 0·537, P < 0·001). In conclusion, colour-changing gum is a useful item for evaluating masticatory performance after mandibulectomy.
Collapse
Affiliation(s)
- Y Shibuya
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
| | | | | | | | | | | |
Collapse
|
43
|
Ishida S, Nakajima M, Liang T, Kihou K, Lee CH, Iyo A, Eisaki H, Kakeshita T, Tomioka Y, Ito T, Uchida S. Anisotropy of the in-plane resistivity of underdoped Ba(Fe(1-x)Co(x))2As2 superconductors induced by impurity scattering in the antiferromagnetic orthorhombic phase. Phys Rev Lett 2013; 110:207001. [PMID: 25167441 DOI: 10.1103/physrevlett.110.207001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Indexed: 06/03/2023]
Abstract
We investigated the in-plane resistivity anisotropy for underdoped Ba(Fe(1-x)Co(x))(2)As(2) single crystals with improved quality. We demonstrate that the anisotropy in resistivity in the magnetostructural ordered phase arises from the anisotropy in the residual component which increases in proportion to the Co concentration x. This gives evidence that the anisotropy originates from the impurity scattering by Co atoms substituted for the Fe sites, rather than the so far proposed mechanisms such as the anisotropy of Fermi velocities of reconstructed Fermi surface pockets. As doping proceeds to the paramagnetic-tetragonal phase, a Co impurity transforms to a weak and isotropic scattering center.
Collapse
Affiliation(s)
- S Ishida
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan and National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - M Nakajima
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan and National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - T Liang
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan and National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - K Kihou
- National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - C H Lee
- National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - A Iyo
- National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - H Eisaki
- National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - T Kakeshita
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - Y Tomioka
- National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - T Ito
- National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| | - S Uchida
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan and JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan
| |
Collapse
|
44
|
Anzai H, Ino A, Arita M, Namatame H, Taniguchi M, Ishikado M, Fujita K, Ishida S, Uchida S. Relation between the nodal and antinodal gap and critical temperature in superconducting Bi2212. Nat Commun 2013; 4:1815. [PMID: 23652003 PMCID: PMC3674243 DOI: 10.1038/ncomms2805] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [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: 08/23/2012] [Accepted: 03/24/2013] [Indexed: 12/05/2022] Open
Abstract
An energy gap is, in principle, a dominant parameter in superconductivity. However, this view has been challenged for the case of high-Tc cuprates, because anisotropic evolution of a d-wave-like superconducting gap with underdoping has been difficult to formulate along with a critical temperature Tc. Here we show that a nodal-gap energy 2ΔN closely follows 8.5 kBTc with underdoping and is also proportional to the product of an antinodal gap energy Δ* and a square-root superfluid density √Ps for Bi2Sr2CaCu2O8+δ, using low-energy synchrotron-radiation angle-resolved photoemission. The quantitative relations imply that the distinction between the nodal and antinodal gaps stems from the separation of the condensation and formation of electron pairs, and that the nodal-gap suppression represents the substantial phase incoherence inherent in a strong-coupling superconducting state. These simple gap-based formulae reasonably describe a crucial part of the unconventional mechanism governing Tc. In conventional superconductors, the critical temperature is proportional to the superconducting energy gap, but this is not so in unconventional superconductors. Anzai et al. identify an alternative relationship involving nodal and antinodal gaps in an underdoped cuprate superconductor.
Collapse
Affiliation(s)
- H Anzai
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Abstract
We investigate flow in the stomach during gastric mixing using a numerical simulation with an anatomically realistic geometry and free-surface flow modeling. Because of momentum differences between greater and lesser curvatures during peristaltic contractions, time-averaged recirculation is generated in the antrum, with retropulsive flow away from the pylorus and compensation flow along the greater curvature toward the pylorus. Gastric content in the distal stomach is continuously transported to the distal antrum by the forward flow of antral recirculation, and it is then mixed by the backward retropulsive flow. Hence, the content inside the antral recirculation is well mixed independently of initial location, whereas the content outside the recirculation is poorly mixed. Free-surface modeling enables us to analyze the effects of posture on gastric mixing. In the upright, prone, and right lateral positions, most of the antrum is filled with content, and the content is well mixed by antral recirculation. In contrast, in the supine and left lateral positions, most of the content is located outside antral recirculation, which results in poor mixing. The curved, twisted shape of the stomach substantially supports gastric mixing in fluid mechanical terms.
Collapse
Affiliation(s)
- Yohsuke Imai
- Department of Bioengineering and Robotics, Tohoku University, 6-6-01 Aoba, Aoba, Sendai 980-8579, Japan.
| | | | | | | | | | | |
Collapse
|
46
|
Shibuya Y, Ishida S, Kobayashi M, Hasegawa T, Nibu K, Komori T. Evaluation of masticatory function after maxillectomy using a colour-changing chewing gum. J Oral Rehabil 2012; 40:191-8. [DOI: 10.1111/joor.12023] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/19/2012] [Indexed: 11/30/2022]
Affiliation(s)
- Y. Shibuya
- Department of Oral and Maxillofacial Surgery; Kobe University Graduate School of Medicine; Kobe Japan
| | - S. Ishida
- Department of Oral and Maxillofacial Surgery; Kobe University Graduate School of Medicine; Kobe Japan
| | - M. Kobayashi
- Department of Oral and Maxillofacial Surgery; Kobe University Graduate School of Medicine; Kobe Japan
| | - T. Hasegawa
- Department of Oral and Maxillofacial Surgery; Kobe University Graduate School of Medicine; Kobe Japan
| | - K. Nibu
- Department of Otolaryngology - Head and Neck Surgery; Kobe University Graduate School of Medicine; Kobe Japan
| | - T. Komori
- Department of Oral and Maxillofacial Surgery; Kobe University Graduate School of Medicine; Kobe Japan
| |
Collapse
|
47
|
Nakajima M, Ishida S, Tomioka Y, Kihou K, Lee CH, Iyo A, Ito T, Kakeshita T, Eisaki H, Uchida S. Effect of Co doping on the in-plane anisotropy in the optical spectrum of underdoped Ba(Fe(1-x)Co(x))2As2. Phys Rev Lett 2012; 109:217003. [PMID: 23215609 DOI: 10.1103/physrevlett.109.217003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Indexed: 06/01/2023]
Abstract
We investigate the anisotropy in the in-plane optical spectra of detwinned Ba(Fe(1-x)Co(x))(2)As(2). The optical conductivity spectrum of BaFe(2)As(2) shows appreciable anisotropy in the magnetostructural ordered phase, whereas the dc (ω = 0) resistivity is nearly isotropic at low temperatures. Upon Co doping, the resistivity becomes highly anisotropic, while the finite-energy intrinsic anisotropy is suppressed. It is found that anisotropy in resistivity arises from anisotropic impurity scattering due to the presence of doped Co atoms, and it is extrinsic in origin. The intensity of a specific optical phonon mode is also found to show striking anisotropy in the ordered phase. The anisotropy induced by the Co impurity and that observed in the optical phonon mode are hallmarks of the highly polarizable electronic state in the ordered phase.
Collapse
Affiliation(s)
- M Nakajima
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Vishik IM, Hashimoto M, He RH, Lee WS, Schmitt F, Lu D, Moore RG, Zhang C, Meevasana W, Sasagawa T, Uchida S, Fujita K, Ishida S, Ishikado M, Yoshida Y, Eisaki H, Hussain Z, Devereaux TP, Shen ZX. Phase competition in trisected superconducting dome. Proc Natl Acad Sci U S A 2012; 109:18332-7. [PMID: 23093670 PMCID: PMC3494935 DOI: 10.1073/pnas.1209471109] [Citation(s) in RCA: 204] [Impact Index Per Article: 17.0] [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] Open
Abstract
A detailed phenomenology of low energy excitations is a crucial starting point for microscopic understanding of complex materials, such as the cuprate high-temperature superconductors. Because of its unique momentum-space discrimination, angle-resolved photoemission spectroscopy (ARPES) is ideally suited for this task in the cuprates, where emergent phases, particularly superconductivity and the pseudogap, have anisotropic gap structure in momentum space. We present a comprehensive doping- and temperature-dependence ARPES study of spectral gaps in Bi(2)Sr(2)CaCu(2)O(8+δ), covering much of the superconducting portion of the phase diagram. In the ground state, abrupt changes in near-nodal gap phenomenology give spectroscopic evidence for two potential quantum critical points, p = 0.19 for the pseudogap phase and p = 0.076 for another competing phase. Temperature dependence reveals that the pseudogap is not static below T(c) and exists p > 0.19 at higher temperatures. Our data imply a revised phase diagram that reconciles conflicting reports about the endpoint of the pseudogap in the literature, incorporates phase competition between the superconducting gap and pseudogap, and highlights distinct physics at the edge of the superconducting dome.
Collapse
Affiliation(s)
- I. M. Vishik
- Stanford Institute for Materials and Energy Sciences and
- Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305
| | - M. Hashimoto
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025
| | - Rui-Hua He
- Department of Physics, Boston College, Chestnut Hill, MA 02467
| | - Wei-Sheng Lee
- Stanford Institute for Materials and Energy Sciences and
- Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305
| | - Felix Schmitt
- Stanford Institute for Materials and Energy Sciences and
- Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305
| | - Donghui Lu
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025
| | - R. G. Moore
- Stanford Institute for Materials and Energy Sciences and
| | - C. Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
| | - W. Meevasana
- School of Physics, Suranaree University of Technology, Muang, Nakhon Ratchasima 30000, Thailand
| | - T. Sasagawa
- Materials and Structures Laboratory, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - S. Uchida
- Department of Physics, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuhiro Fujita
- Laboratory for Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY 14853
| | - S. Ishida
- Department of Physics, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - M. Ishikado
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Yoshiyuki Yoshida
- Superconducting Electronics Group, Electronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki 305-8568, Japan; and
| | - Hiroshi Eisaki
- Superconducting Electronics Group, Electronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki 305-8568, Japan; and
| | - Zahid Hussain
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| | - Thomas P. Devereaux
- Stanford Institute for Materials and Energy Sciences and
- Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305
| | - Zhi-Xun Shen
- Stanford Institute for Materials and Energy Sciences and
- Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305
| |
Collapse
|
49
|
Kanda A, Noda K, Saito W, Ishida S. (Pro)renin receptor is associated with angiogenic activity in proliferative diabetic retinopathy. Diabetologia 2012; 55:3104-13. [PMID: 22930161 DOI: 10.1007/s00125-012-2702-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Accepted: 07/25/2012] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS The renin-angiotensin system (RAS) potentially has a role in the development of end-organ damage, and tissue RAS activation has been suggested as a risk factor for diabetic retinopathy. We have recently shown significant involvement of (pro)renin receptor ([P]RR) in retinal inflammation in a rodent model of early diabetes. In this study we aim to elucidate the (P)RR-associated pathogenesis of fibrovascular proliferation, a late-stage angiogenic complication in human diabetic retinopathy. METHODS Vitreous fluids from 23 eyes of patients with proliferative diabetic retinopathy (PDR) and 16 eyes of controls with non-diabetic, idiopathic macular diseases (macular hole and epiretinal membrane) were collected. Protein levels of soluble (P)RR were measured by ELISA, and immunofluorescence was performed to assess the localisation of (P)RR and related molecules in fibrovascular tissues from PDR eyes. RESULTS (P)RR immunoreactivity was detected in neovascular endothelial cells, colocalised with prorenin, phosphorylated extracellular signal-regulated kinase (ERK) and vascular endothelial growth factor (VEGF). Prorenin application to human retinal microvascular endothelial cells significantly upregulated mRNA expression of VEGF, especially the VEGF165 isoform, which was abolished by (P)RR or ERK signalling blockade. Proteases known to cleave (P)RR, including furin, were positive in endothelial cells in fibrovascular tissues. Protein levels of soluble (P)RR in vitreous fluids were higher in PDR eyes than in non-diabetic control eyes, and correlated significantly with vitreous prorenin and VEGF levels and the vascular density of fibrovascular tissues. CONCLUSIONS/INTERPRETATION Our data using human samples provide the first evidence that (P)RR is associated with angiogenic activity in PDR.
Collapse
Affiliation(s)
- A Kanda
- Laboratory of Ocular Cell Biology and Visual Science, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | | | | | | |
Collapse
|
50
|
Johnston S, Vishik IM, Lee WS, Schmitt F, Uchida S, Fujita K, Ishida S, Nagaosa N, Shen ZX, Devereaux TP. Evidence for the importance of extended Coulomb interactions and forward scattering in cuprate superconductors. Phys Rev Lett 2012; 108:166404. [PMID: 22680740 DOI: 10.1103/physrevlett.108.166404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 12/13/2011] [Indexed: 06/01/2023]
Abstract
The prevalent view of the high-temperature superconducting cuprates is that their essential low-energy physics is captured by local Coulomb interactions. However, this view been challenged recently by studies indicating the importance of longer-range components. Motivated by this, we demonstrate the importance of these components by examining the electron-phonon (e-ph) interaction with acoustic phonons in connection with the recently discovered renormalization in the near-nodal low-energy (~8-15 meV) dispersion of Bi(2)Sr(2)CaCu(2)O(8+δ). By studying its nontrivial momentum and doping dependence we conclude a predominance of forward scattering arising from the direct interplay between the e-ph and extended Coulomb interactions. Our results thus demonstrate how the low-energy renormalization can provide a pathway to new insights into how these interactions interplay with one another and influence pairing and dynamics in the cuprates.
Collapse
Affiliation(s)
- S Johnston
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, California 94305, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|