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15篇 您的检索式:作者名="Mitsuhiro Yamada"
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1The increase in surface CXCR4 expression on lung extravascular neutrophils and its effects on neutrophils during endotoxin-induced lung injury显示文摘Inflammatory stimuli,such as a microbes or lipopolysaccharides,induce a rapid release of neutrophils from the bone marrow and promote neutrophil migration into inflamed sites to promote host defense.However,an excess accumulation and retention of neutrophils in inflamed tissue can cause severe tissue injuries in the later stages of inflammation.Recent studies have reported that both CXCL12 levels in injured lungs and its receptor,CXCR4,on accumulated neutrophils in injured lungs,increased;furthermore,these studies showed that the CXCL12/CXCR4 signaling pathway participated in neutrophil accumulation in the later stages of lipopolysaccharide(LPS)-induced lung injury.However,the mechanisms underlying this increase in surface CXCR4 expression in neutrophils remain unclear.In this study,we found that surface CXCR4 expression increased in extravascular,but not intravascular,neutrophils in the lungs of LPS-induced lung injury model mice.Furthermore,ex vivo studies revealed that CXCL12 acted not only as a chemoattractant,but also as a suppressor of cell death for the lung neutrophils expressing CXCR4.Sulfatide,one of the native ligands for L-selectin,induced the increase of surface CXCR4 expression on isolated circulating neutrophils,suggesting that the activation of L-selectin may be involved in the increase in surface CXCR4.Our findings show that surface CXCR4 levels on neutrophils increase after extravasation into injured lungs,possibly through the activation of L-selectin.The CXCL12/CXCR4 signaling pathway plays an important role in the modulation of neutrophil activity during acute lung injury,not only by promoting chemotaxis but also by suppressing cell death.Mitsuhiro Yamada Hiroshi Kubo Seiichi Kobayashi Kota Ishizawa Mei He Takaya Suzuki Naoya Fujino Hiroyuki Kunishima Masamitsu Hatta Katsushi Nishimaki Tetsuji Aoyagi Kouichi Tokuda Miho Kitagawa Hisakazu Yano Hirokazu Tamamura Nobutaka Fujii Mitsuo Kaku 2011Cellular & Molecular Immunology2011,8,4:6
2Sessile serrated adenoma detection rate is correlated with adenoma detection rate显示文摘AIM To investigated the association between adenoma detection rate(ADR) and sessile serrated ADR(SSADR) and significant predictors for sessile serrated adenomas(SSA) detection.METHODS This study is a retrospective, single-center analysis. Total colonoscopies performed by the gastroenterologists at the University of Tokyo Hospital between January and December 2014 were retrospectively identified. Polyps were classified as low-grade or high-grade adenoma, cancer, SSA, or SSA with cytological dysplasia, and the prevalence of each type of polyp was investigated. Predictors of adenoma and SSA detection were examined using logistic generalized estimating equation models. The association between ADR and SSADR for each gastroenterologist was investigated by calculating a correlation coefficient weighted by the number of each gastroenterologist's examination.RESULTS A total of 3691 colonoscopies performed by 35 gastroenterologists were assessed. Overall, 978 (26.5%) low-and 84 (2.2%) high-grade adenomas, 81 (2.2%) cancers, 66 (1.8%) SSAs, and 2 (0.1%) SSAs with cytological dysplasia were detected. Overall ADR was 29.5%(men 33.2%, women 23.8%) and overall SSADR was 1.8%(men 1.7%, women 2.1%). In addition, 672 low-grade adenomas (68.8% of all the detected lowgrade adenomas), 58 (69.9%) high-grade adenomas, 29 (34.5%) cancers, 52 (78.8%) SSAs, and 2 (100%) SSAs with cytological dysplasia were found in the proximal colon. Adenoma detection was the only significant predictor of SSA detection (adjusted OR: 2.53, 95%CI: 1.53-4.20; P < 0.001). The correlation coefficient between ADR and SSADR weighted by the number of each gastroenterologist's examinations was 0.606(P < 0.001).CONCLUSION Our results demonstrated that ADR is correlated to SSADR. In addition, patients with adenomas had a higher prevalence of SSAs than those without adenomas.Daisuke Ohki Yosuke Tsuji Tomohiro Shinozaki Yoshiki Sakaguchi Chihiro Minatsuki Hiroto Kinoshita Keiko Niimi Satoshi Ono Yoku Hayakawa Shuntaro Yoshida Atsuo Yamada Shinya Kodashima Nobutake Yamamichi Yoshihiro Hirata Tetsuo Ushiku Mitsuhiro Fujishiro Masashi Fukayama Kazuhiko Koike 2018World Journal of Gastrointestinal Oncology2018,10,3:2
3Association of gene polymorphisms with coronary artery disease in individuals with or without nonfamilial hypercholesterolemia显示文摘Keiko Shimokata Yoshiji Yamada Takahisa Kondo Sahoko Ichihara Hideo Izawa Kohzo Nagata Toyoaki Murohara Miyoshi Ohno Mitsuhiro Yokota 2003Atherosclerosis2003,,1:1
4Correlations between plasma platelet-activating factor acetylhydrolase (PAF-AH) activity and PAF-AH genotype, age, and atherosclerosis in a Japanese population显示文摘Yoshiji Yamada Hidemi Yoshida Sahoko Ichihara Tadaatsu Imaizumi Kei Satoh Mitsuhiro Yokota 2000Atherosclerosis2000,,1:1
5Association of a T29→C Polymorphism of the Transforming Growth Factor-β1 Gene With Genetic Susceptibility to Myocardial Infarction in Japanese显示文摘Mitsuhiro Yokota Sahoko Ichihara Tong-Lang Lin Nobuo Nakashima Yoshiji Yamada 2000Circulation: Journal of the American Heart Association2000,,24:1
6Feasibility of gastric endoscopic submucosal dissection in elderly patients aged≥80 years显示文摘BACKGROUND Endoscopic resection,especially endoscopic submucosal dissection(ESD),is increasingly performed in elderly patients with early gastric cancer,and lesions beyond the expanded indications are also resected endoscopically in some patients.It is essential to assess whether gastric ESD is safe and suitable for elderly patients and investigate what type of lesions carry an increased risk of ESD-related complications.AIM To assess the efficacy and feasibility of gastric ESD for elderly patients,and define high-risk lesions and prognostic indicators.METHODS Among a total of 1169 sessions of gastric ESD performed in Kanagawa Cancer Center Hospital from 2006 to 2014,179 sessions(15.3%)were performed in patients aged≥80 years,and 172 of these sessions were done in patients with a final diagnosis of gastric cancer.These patients were studied retrospectively to evaluate short-term outcomes and survival.The short-term outcomes included the rates of en bloc resection and curative resection,complications,and procedurerelated mortality.Curability was assessed according to the Japanese Gastric Cancer Treatment Guidelines 2010.Fisher’s exact test was used to statistically analyze risk factors.Clinical characteristics of each group were compared using Fisher’s exact test and Mann-Whitney U test.Survival rates at each time point were based on Kaplan-Meier estimation.Overall survival rates were compared between patients with gastric cancer in each group with use of the log-rank test.To identify prognostic factors that jointly predict the hazard of death while controlling for model overfitting,we used the least absolute shrinkage and selection operator(LASSO)Cox regression model including factors curative/noncurative,age,gender,body mass index,prognostic nutritional index,Charlson comorbidity index(CCI),Glasgow prognostic score,neutrophil-to-lymphocyte ratio,and antithrombotic agent use.We selected the LASSO Cox regression model that resulted in minimal prediction error in 10-fold cross-validation.P<0.05 was considered statistically significant.RESULTS The en bloc dissection rate was 97.1%,indicating that a high quality of treatment was achieved even in elderly patients.As for complications,the rates of bleeding,perforation and aspiration pneumonitis were 3.4%,1.1%and 0.6%,respectively.These complication rates indicated that ESD was not associated with a particularly higher risk in elderly patients than in nonelderly patients.A dissection incision>40 mm,lesions associated with depressions,and lesions with ulcers were risk factors for post-ESD bleeding,and location of the lesion in the upper third of the stomach was a risk factor for perforation in elderly patients(P<0.05).Location of the lesion in the lower third of the stomach tended to be associated with a higher risk of bleeding.The overall survival(OS)did not differ significantly between curative and noncurative ESD(P=0.69).In patients without additional surgery,OS rate was significantly lower in patients with a high CCI(≥2)than in those with a low CCI(≤1)(P<0.001).CONCLUSION Gastric ESD is feasible even in patients aged≥80 years.Observation without additional surgery after noncurative ESD is reasonable,especially in elderly patients with CCI≥2.Yasuhiro Inokuchi Ayaka Ishida Kei Hayashi Yoshihiro Kaneta Hayato Watanabe Kazuki Kano Mitsuhiro Furuta Kosuke Takahashi Hirohito Fujikawa Takanobu Yamada Kouji Yamamoto Nozomu Machida Takashi Ogata Takashi Oshima Shin Maeda 2022World Journal of Gastrointestinal Endoscopy2022,14,1:1
7Texture and color enhancement imaging in magnifying endoscopic evaluation of colorectal adenomas显示文摘BACKGROUND Olympus Corporation has developed texture and color enhancement imaging(TXI)as a novel image-enhancing endoscopic technique.AIM To investigate the effectiveness of TXI in identifying colorectal adenomas using magnifying observation.METHODS Colorectal adenomas were observed by magnified endoscopy using white light imaging(WLI),TXI,narrow band imaging(NBI),and chromoendoscopy(CE).This study adopted mode 1 of TXI.Adenomas were confirmed by histological examination.TXI visibility was compared with the visibility of WLI,NBI,and CE for tumor margin,and vessel and surface patterns of the Japan NBI expert team(JNET)classification.Three expert endoscopists and three non-expert endoscopists evaluated the visibility scores,which were classified as 1,2,3,and 4.RESULTS Sixty-one consecutive adenomas were evaluated.The visibility score for tumor margin of TXI(3.47±0.79)was significantly higher than that of WLI(2.86±1.02,P<0.001),but lower than that of NBI(3.76±0.52,P<0.001),regardless of the endoscopist’s expertise.TXI(3.05±0.79)had a higher visibility score for the vessel pattern of JNET classification than WLI(2.17±0.90,P<0.001)and CE(2.47±0.87,P<0.001),but lower visibility score than NBI(3.79±0.47,P<0.001),regardless of the experience of endoscopists.For the visibility score for the surface pattern of JNET classification,TXI(2.89±0.85)was superior to WLI(1.95±0.79,P<0.01)and CE(2.75±0.90,P=0.002),but inferior to NBI(3.67±0.55,P<0.001).CONCLUSION TXI provided higher visibility than WLI,lower than NBI,and comparable to or higher than CE in the magnified observation of colorectal adenomas.Osamu Toyoshima Toshihiro Nishizawa Shuntaro Yoshida Tomoharu Yamada Nariaki Odawara Tatsuya Matsuno Miho Obata Ken Kurokawa Chie Uekura Mitsuhiro Fujishiro 2022World Journal of Gastrointestinal Endoscopy2022,14,2:1
8Nickel-catalyzed carbonization of wood for coproduction of functional carbon and fluid fuels I: production of crystallized mesoporous carbon显示文摘Tsutomu Suzuki Kyoko Suzuki Yukio Takahashi Mitsuhiro Okimoto Tetsuo Yamada Noriyasu Okazaki Yuichi Shimizu Masashi Fujiwara 2007Journal of Wood Science2007,,1:1
9AT1 Receptor Blockade Reduces Cardiac Calcineurin Activity in Hypertensive Rats显示文摘Kohzo Nagata Fuji Somura Koji Obata Mari Odashima Hideo Izawa Sahoko Ichihara Tetsuro Nagasaka Mitsunori Iwase Yoshiji Yamada Nobuo Nakashima Mitsuhiro Yokota 2002Hypertension: Journal of the American Heart Association2002,,2:1
10Long chain fatty acid synthesis in developing castor bean seeds II, Opera- tion of the path from sucrose to long chain fatty acids in a subeellular particulate system 显示文摘Mitsuhiro Yamada Q Usami Kazuyo Nakajima 1974Plant Cell Physiology1974,15,1:1
11Modified K-Line in Magnetic Resonance Imaging Predicts Insufficient Decompression of Cervical Laminoplasty显示文摘Takashi Taniyama Takashi Hirai Tsuyoshi Yamada Masato Yuasa Mitsuhiro Enomoto Toshitaka Yoshii Tsuyoshi Kato Shigenori Kawabata Hiroyuki Inose Atsushi Okawa 2013Spine2013,,6:1
12Evaluation of cytologically benign solitary thyroid nodules by ultrasonography: A retrospective analysis of 1877 cases显示文摘Minoru Kihara Mitsuyoshi Hirokawa Hiroo Masuoka Tomonori Yabuta Hisakazu Shindo Takuya Higashiyama Mitsuhiro Fukushima Osamu Yamada Yuuki Takamura Yasuhiro Ito Kaoru Kobayashi Akihiro Miya Akira Miyauchi 2012Auris Nasus Larynx2012,,:1
13Rectal bleeding after hypofractionated radiotherapy for prostate cancer: Correlation between clinical and dosimetric parameters and the incidence of grade 2 or worse rectal bleeding显示文摘Tetsuo Akimoto Hiroyuki Muramatsu Mitsuhiro Takahashi Jun-ichi Saito Yoshizumi Kitamoto Koichi Harashima Yasushi Miyazawa Masami Yamada Kazuto Ito Kouhei Kurokawa Hidetoshi Yamanaka Takashi Nakano Norio Mitsuhashi Hideo Niibe 2004International Journal of Radiation Oncology Biology Physics2004,,4:1
14Antiarrhythmic Efficacy of Dipyridamole in Treatment of Reperfusion Arrhythmias: Evidence for cAMP-Mediated Triggered Activity as a Mechanism Responsible for Reperfusion Arrhythmias显示文摘Yukihiko Yoshida Makoto Hirai Takumi Yamada Yukiomi Tsuji Takahisa Kondo Yasuya Inden Makoto Akahoshi Yoshimasa Murakami Makoto Tsuda Naoya Tsuboi Haruo Hirayama Mitsuhiro Okamoto Teruo Ito Hidehiko Saito Junji Toyama 2000Circulation: Journal of the American Heart Association2000,,6:1
15Clinical characteristics of gastrointestinal immune-related adverse events of immune checkpoint inhibitors and their association with survival显示文摘BACKGROUND Despite the popularity of immune checkpoint inhibitors(ICIs)in the treatment of advanced cancer,patients often develop gastrointestinal(GI)and non-GI immune-related adverse events(irAEs).The clinical characteristics and survival outcomes of GI-irAEs have not been fully elucidated in previous reports.This necessitates the evaluation of the impact of GI-irAEs on patients receiving ICI treatment.AIM To evaluate the clinical characteristics of GI-irAEs and their impact on survival in patients treated with ICIs.METHODS In this single-center,retrospective,observational study,we reviewed the records of 661 patients who received ICIs for various cancers at Nagoya University Hospital from September 2014 to August 2020.We analyzed the clinical characteristics of patients who received ICI treatment.We also evaluated the correlation between GI-irAE development and prognosis in non-small cell lung cancer(LC)and malignant melanoma(MM).Kaplan-Meier analysis was used to compare the median overall survival(OS).Multivariate Cox proportional hazards models were used to identify prognostic factors.A P value<0.05 was considered statistically significant.RESULTS GI-irAEs occurred in 34 of 605 patients(5.6%)treated with an anti-programmed cell death-1/programmed death-ligand 1(anti-PD-1/PD-L1)antibody alone and in nine of 56 patients(16.1%)treated with an anti-cytotoxic T-lymphocyte antigen 4(CTLA-4)antibody alone or a combination of anti-PD-1 and anti-CTLA-4 antibodies.The cumulative incidence and median daily diarrhea frequency were significantly higher in patients receiving anti-CTLA-4 antibodies(P<0.05).In 130 patients with MM,OS was significantly prolonged in the group that continued ICI treatment despite the development of GI-irAEs compared to the group that did not experience GI-irAEs(P=0.035).In contrast,in 209 patients with non-small cell LC,there was no significant difference in OS between the groups.The multivariate analyses showed that a performance status of 2-3(hazard ratio:2.406;95%confidence interval:1.125–5.147;P=0.024)was an independent predictive factor for OS in patients with MM.CONCLUSION Patients receiving anti-CTLA-4 antibodies develop GI-irAEs more frequently and with higher severity than those receiving anti-PD-1/PD-L1 antibodies.Continuing ICI treatment in patients with MM with GI-irAEs have better OS.Kentaro Yamada Tsunaki Sawada Masanao Nakamura Takeshi Yamamura Keiko Maeda Eri Ishikawa Tadashi Iida Yasuyuki Mizutani Naomi Kakushima Takuya Ishikawa Kazuhiro Furukawa Eizaburo Ohno Takashi Honda Hiroki Kawashima Masatoshi Ishigami Satoshi Furune Tetsunari Hase Kenji Yokota Osamu Maeda Naozumi Hashimoto Masashi Akiyama Yuichi Ando Mitsuhiro Fujishiro 2021World Journal of Gastroenterology2021,27,41:0
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