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Yoshifumi Tamura
Researcher at Juntendo University
Publications - 135
Citations - 3264
Yoshifumi Tamura is an academic researcher from Juntendo University. The author has contributed to research in topics: Insulin resistance & Insulin. The author has an hindex of 26, co-authored 114 publications receiving 2693 citations.
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Journal ArticleDOI
Gut Dysbiosis and Detection of “Live Gut Bacteria” in Blood of Japanese Patients With Type 2 Diabetes
Junko Sato,Akio Kanazawa,Fuki Ikeda,Tomoaki Yoshihara,Hiromasa Goto,Hiroko Abe,Koji Komiya,Minako Kawaguchi,Tomoaki Shimizu,Takeshi Ogihara,Yoshifumi Tamura,Yuko Sakurai,Risako Yamamoto,Tomoya Mita,Yoshio Fujitani,Hiroshi Fukuda,Koji Nomoto,Takuya Takahashi,Takashi Asahara,Takahisa Hirose,Satoru Nagata,Yuichiro Yamashiro,Hirotaka Watada +22 more
TL;DR: This is the first report of gut dysbiosis in Japanese patients with type 2 diabetes as assessed by RT-qPCR, and the high rate of gut bacteria in the circulation suggests translocation of bacteria from the gut to the bloodstream.
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Effects of Diet and Exercise on Muscle and Liver Intracellular Lipid Contents and Insulin Sensitivity in Type 2 Diabetic Patients
Yoshifumi Tamura,Yasushi Tanaka,Fumihiko Sato,Jong Bock Choi,Hirotaka Watada,Masataka Niwa,Junichiro Kinoshita,Aiko Ooka,Naoki Kumashiro,Yasuhiro Igarashi,Shinsuke Kyogoku,Tadayuki Maehara,Masahiko Kawasumi,Takahisa Hirose,Ryuzo Kawamori +14 more
TL;DR: It was found that 2 wk of diet and exercise decreased IMCL and increased muscle insulin-mediated glucose uptake, whereas diet with or without exercise decreased IHL, these effects were evident despite a small decrease in body fat and were observed independently of fasting FFA levels.
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The diabetes-susceptible gene SLC30A8/ZnT8 regulates hepatic insulin clearance.
Motoyuki Tamaki,Yoshio Fujitani,Akemi Hara,Toyoyoshi Uchida,Yoshifumi Tamura,Kageumi Takeno,Minako Kawaguchi,Takahiro Watanabe,Takeshi Ogihara,Ayako Fukunaka,Tomoaki Shimizu,Tomoya Mita,Akio Kanazawa,Mica Ohara Imaizumi,Takaya Abe,Hiroshi Kiyonari,Shintaro Hojyo,Toshiyuki Fukada,Takeshi Kawauchi,Shinya Nagamatsu,Toshio Hirano,Ryuzo Kawamori,Hirotaka Watada +22 more
TL;DR: It is demonstrated that zinc secreted in concert with insulin suppressed hepatic insulin clearance by inhibiting clathrin-dependent insulin endocytosis and that genetic dysregulation of this system may play a role in the pathogenesis of type 2 diabetes.
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Comparison of glycated albumin (GA) and glycated hemoglobin (HbA1c) in type 2 diabetic patients: usefulness of GA for evaluation of short-term changes in glycemic control.
Satomi Takahashi,Hiroshi Uchino,Tomoaki Shimizu,Akio Kanazawa,Yoshifumi Tamura,Ken Sakai,Hirotaka Watada,Takahisa Hirose,Ryuzo Kawamori,Yasushi Tanaka,Yasushi Tanaka +10 more
TL;DR: GA may be a useful marker for monitoring short-term variations of glycemic control during treatment of diabetic patients, and the percent reduction of HbA1c eventually corresponded with that of GA by 16 weeks after the start of treatment.
Journal ArticleDOI
The Composition of Dietary Fat Directly Influences Glucose-Stimulated Insulin Secretion in Rats
Robert L. Dobbins,Lidia S. Szczepaniak,Jeff Myhill,Yoshifumi Tamura,Hiroshi Uchino,Adria Giacca,J. Denis McGarry +6 more
TL;DR: Data indicate that prolonged exposure to saturated fat enhances GSIS (but this does not entirely compensate for insulin resistance), whereas unsaturated fat, given in the diet or by infusion, impairs GSIS.