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212篇 您的检索式:作者名="Masamitsu"
    题名 作者 年代 出处 被引量
1Short term results of endoscopic submucosal dissection in superficial esophageal squamous cell neoplasms显示文摘AIM: To evaluate the efficacy of endoscopic submucosal dissection for superficial esophageal squamous cell neoplasms. METHODS: Between July 2007 and March 2009, 27 consecutive superficial esophageal squamous cell neoplasms in 25 enrolled patients were treated by endoscopic submucosal dissection. The therapeutic efficacy, complications, and follow-up results were assessed. RESULTS: The mean size of the lesions was 21 ± 13 mm (range 2-55 mm); the mean size of the resection specimens was 32 ± 12 mm (range 10-70 mm). The enblock resection rate was 100% (27/27), and en block resection with tumor-free lateral/basal margins was 88.9% (24/27). Perforation occurred in 1 patient who was managed by conservative medical treatments. None of the patients developed local recurrence or distant metastasis in the follow-up period. CONCLUSION: Endoscopic submucosal dissection is applicable to superficial esophageal squamous cell neoplasms with promising results.Kouichi Nonaka Shin Arai Keiko Ishikawa Masamitsu Nakao Yousuke Nakai Osamu Togawa Koji Nagata Michio Shimizu Yutaka Sasaki Hiroto Kita 2010World Journal of Gastrointestinal Endoscopy2010,2,2:19
2High concentrations of human β-defensin 2 in gastric juice of patients with Helicobacter pylori infection显示文摘AIM: Human β-defensin (HBD)-1 and HBD-2 are endogenous antimicrobial peptides. Unlike HBD-1, the HBD-2 expression is augmented by Helicobacter pylori (H pylori). We sought to determine HBD-1 and HBD-2 concentrations in gastric juice duringH pylori infection.METHODS: HBD-1 and HBD-2 concentrations were measured by radioimmunoassay in plasma and gastric juice of 49 H pylori-infected and 33 uninfected subjects and before and after anti-H pyloritreatment in 13 patients with H pylori-associated gastritis. Interleukin (IL)-1β and IL-8 concentrations in gastric juice were measured by enzyme-linked immunosorbent assay (ELISA). Histological grades of gastritis were determined using two biopsy specimens taken from the antrum and corpus. Reverse phase high performance liquid chromatography (RP-HPLC)was used to identify HBD-2.RESULTS: HBD-2 concentrations in gastric juice, but not in plasma, were significantly higher in H pylori-positive than -negative subjects, albeit the post-treatment levels were unchanged. Immunoreactivity for HBD-2 was exclusively identified in H pylori-infected mucosa by RPHPLC. HBD-2 concentrations in gastric juice correlated with histological degree of neutrophil and mononuclear cell infiltration in the corpus. IL-1β levels correlated with those of IL-8, but not HBD-2. Plasma and gastric juice HBD-1concentrations were similar in H pylori-infected and uninfected subjects.CONCLUSION: Our results place the β-defensins, especially HBD-2, in the front line of innate immune defence.Moreover, HBD-2 may be involved in the pathogenesis of H pylori-associated gastritis, possibly through its function as immune and inflammatory mediator.Hajime Isomoto Hiroshi Mukae Hiroshi Ishimoto Yoshito Nishi Chun-Yang Wen Akihiro Wad Ken Ohnita Toshiya Hirayama Masamitsu Nakazato Shigeru Kohno 2005World Journal of Gastroenterology2005,11,31:10
3在哪个与狭窄的乐队成像放大了内视镜检查法的胃的联系 mucosa 的淋巴的组织淋巴瘤的一个盒子在诊断是有用的显示文摘 Recently, we reported a case of gastric mucosaassociated lymphoid tissue (MALT) lymphoma presenting with unique vascular features. In the report, we defined the tree-like appearance (TLA) on the images of abnormal blood vessels which resembled branches from the trunk of a tree in the shiny mucosa, in which the glandular structure was lost. The 67-year-old female was diagnosed with gastric MALT lymphoma. The patient received eradication therapy for H. pylori. Conventional endoscopy revealed multiple ill-delineated brownish depressions in the stomach and cobblestonelike mucosa was observed at the greater curvature to the posterior wall of the upper gastric body 7 mo after successful eradication. Unsuccessful treatment of gastric MALT lymphoma was suspected on conventional endoscopy. Conventional endoscopic observations found focal depressions and cobblestone-like appearance, and these lesions were subsequently observed using magnified endoscopy combined with narrow band imaging to identify abnormal vessels presenting with a TLA within the lesions. Ten biopsies were taken from the area where abnormal vessels were present within these lesions. Ten biopsies were also taken from the lesions without abnormal vessels as a control. A total of 20 biopsy samples were evaluated to determine whether the diagnosis of MALT lymphoma could be obtained histologically from each sample. A positive diagnosis was obtained in 8/10 TLA (+) sites and in 2/10 TLA(-) sites. Target biopsies of the site with abnormal blood vessels can potentially improve diagnostic accuracy of gastric MALT lymphoma.Kouichi Nonaka Keiko Ishikawa Shin Arai Masamitsu Nakao Michio Shimizu Takaki Sakurai Koji Nagata Makoto Nishimura Osamu Togawa Yasutoshi Ochiai Yutaka Sasaki Hiroto Kita 2012World Journal of Gastrointestinal Endoscopy2012,4,4:8
4New Insights into Dynamic Actin-Based Chloroplast Photorelocation Movement显示文摘叶绿体运动是必要的让植物在各种各样的环境轻条件下面幸存。Phototropinsplant 特定的 blue-light-activated 受体 kinasesmediate 由察觉轻紧张和方向的反应。最近,新奇叶绿体肌动朊(cp 肌动朊) 细丝作为在方向性的叶绿体 photorelocation 运动起一个枢轴的作用被识别了。令人鼓舞的进步最近通过分子的遗传和房间在研究的这个领域里被取得了生物分析。当在 cp 肌动朊细丝的规定涉及叶绿体运动和他们的角色,这评论描述被识别了的因素,因此在他们的生物化学的活动和功能为思考提供一个基础。Sam-Geun Kong Masamitsu Wada 2011Molecular Plant2011,4,5:6
5The 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
6有为决定早阶段的区分的胃的癌的扩展区域的 NBI 的在我的 DL 的实用性显示文摘 AIM: To investigate whether magnifying endoscopy with narrow band imaging (ME-NBI) is useful for evaluating the area of superficial, depressed- or flat-type differentiated adenocarcinoma of the stomach. METHODS: This procedure was performed in Saitama Medical University International Medical Center, Japanese Red Cross Kumamoto Hospital and Kitakyushu Municipal Medical Center. The subjects were 31 patients in whom biopsy findings, from superficial, depressed- or flat-type gastric lesion, suggested differentiated adenocarcinoma in the above 3 hospitals between January and December 2009. Biopsy was performed on the lesion and non-lesion sides of a boundary (imaginary boundary) visualized on ME-NBI. The results were pathologically investigated. We evaluated the accuracy of estimating a demarcation line (DL) on ME-NBI in comparison with biopsy findings as a gold standard. RESULTS: The DL that could be recognized at 2 points on the orifice and anal sides of each lesion during ME-NBI was consistent with the pathological findings in 22 patients with 0-Ⅱc lesions, 7 with 0-Ⅱb lesions, and 2 with 0-Ⅱb + Ⅱc lesions, showing an accuracy of 100%. CONCLUSION: The results suggest the usefulness of ME-NBI for evaluating the area of superficial, depressed- and flat-type differentiated adenocarcinoma of the stomach.Kouichi Nonaka Masaaki Namoto Hideki Kitada Michio Shimizu Yasutoshi Ochiai Osamu Togawa Masamitsu Nakao Makoto Nishimura Keiko Ishikawa Shin Arai Hiroto Kita 2012World Journal of Gastrointestinal Endoscopy2012,4,8:6
7Clues to the signals for chloroplast photorelocation from the lifetimes of accumulation and avoidance responses显示文摘Chloroplast photo-relocation movement is crucial for plant survival; however, the mechanism of this phenomenon is still poorly understood. Especially, the signal that goes from photoreceptor to chloroplast is unknown, although the photoreceptors(phototropin 1 and 2) have been identified and an actin structure(chloroplast actin filaments) has been characterized that is specific for chloroplast movement. Here,in gametophytes of the fern Adiantum capillus-veneris,gametophores of the moss Physcomiterella patens, and leaves of the seed plant Arabidopsis thaliana, we sought to characterize the signaling system by measuring the lifetime of the induced response. Chloroplast movements were induced by microbeam irradiation with high-intensity blue light and recorded. The lifetime of the avoidance state was measured as a lag time between switching off the beam and the loss of avoidance behavior, and that of the accumulation state was measured as the duration of accumulation behavior following the extinction of the beam. The lifetime for the avoidance response state is approximately 3–4 min and that for the accumulation response is 19–28 min. These data suggest that the two responses are based on distinct signals.Takeshi Higa Masamitsu Wada 2015Journal of Integrative Plant Biology2015,57,1:4
8Red Light-Induced Phytochrome Relocation into the Nucleus in Adiantum capillus-veneris显示文摘在种子植物的 Phytochromes 被知道搬到一种红轻依赖者的方式进原子核与或没有交往的因素。这里,我们由部分孢子照耀实验在 phytochrome 依赖的石长生属植物 capillus-veneris 孢子萌芽显示出 phytochrome 重定位到原子区域。原子或吸入的孢子的无核区域与红或 far-red 光和涉及孢子萌芽的 phytochrome 的本地化的微光束被照耀从萌芽率被估计。为孢子萌芽的 phytochrome 在吸收以后在黑暗下面在整个整个孢子存在,但是逐渐地移居了到原子区域追随者红光照耀。粒子轰炸在发芽孢子表示的 PHYGUS 熔化蛋白质的细胞内部的分发显示出 Acphy2,然而并非 Acphy1 的迁居,进以一种红轻依赖者的方式的原子核,建议 Acphy2 是为蕨纲植物孢子萌芽的光敏电阻器。Hidenori Tsuboi Sachihiko Nakamura Eberhard Schaifer Masamitsu Wadaa 2012Molecular Plant2012,5,3:4
9Nolluonuscidides from the cashew (Anacardium occidetale) and their large-scale isolation显示文摘Isao K Sakae K Masamitsu O 1986Agric Food Chem1986,34,:2
10Diagnosis of boundary in early gastric cancer显示文摘Endoscopic submucosal dissection (ESD) is an advanced therapeutic endoscopic technique,which allowsresection of larger superficial tumors in the esophagus,stomach,and colon.Precise diagnosis of the boundary between tumor and the non-tumorous surrounding portion is especially important before starting ESD,because too much resection can potentially take more time and can induce a higher complication rate,while too little resection can result in a non-curative resection.The boundary diagnosis is often difficult for early gastric cancer,mainly because of the underlying condition of chronic gastritis.Due to recent developments in endoscopy,including magnified endoscopy and narrow band endoscopy,the boundary diagnosis is becoming easy and more accurate.We have also applied magnified endoscopy combined with narrow band imaging to fresh specimens immediately after resection using thetiling method and XY stage.Yasutoshi Ochiai Shin Arai Masamitsu Nakao Takashi Shono Hiroto Kita 2012World Journal of Gastrointestinal Endoscopy2012,4,3:2
11Prevalence of asymptomat in carotid atherosclerotic lesions detected by high-resolution ultrasonography and its relation to cardiovascular risk factors in the general population of a Japanese city the suita study显示文摘Toshifumi M Masamitsu K Stroke0,199,:2
12Preoperative Carcinoembryonic Antigen Level Predicts Prognosis in Patients with Pseudomyxoma Peritonei Treated with Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy显示文摘Emel Canbay Haruaki Ishibashi Shouzou Sako Akiyoshi Mizumoto Masamitsu Hirano Masumi Ichinose Nobuyuki Takao Yutaka Yonemura 2013World Journal of Surgery2013,,6:2
13Amplification of flood discharge caused by the cascading failure of landslide dams显示文摘The cascading failure of multiple landslide dams can trigger a larger peak flood discharge than that caused by a single dam failure.Therefore,for an accurate numerical simulation,it is essential to elucidate the primary factors affecting the peak discharge of the flood caused by a cascading failure,which is the purpose of the current study.First,flume experiments were done on the cascading failure of two landslide dams under different upstream dam heights,downstream dam heights,and initial downstream reservoir water volumes.Then,the experimental results were reproduced using a numerical simulation model representing landslide dam erosion resulting from overtopping flow.Finally,the factors influencing the peak flood discharge caused by the cascading failure were analyzed using the numerical simulation model.Experimental results indicated that the inflow discharge into the downstream dam at the time when the downstream dam height began to rapidly erode was the main factor responsible for a cascading failure generating a larger peak flood discharge than that generated by a single dam failure.Furthermore,the results of a sensitivity analysis suggested that the upstream and downstream dam heights,initial water volume in the reservoir of the downstream dam,upstream and downstream dam crest lengths,and distance between two dams were among the most important factors in predicting the flood discharge caused by the cascading failure of multiple landslide dams.Shoki Takayama Masamitsu Fujimoto Yoshifumi Satofuka 2021International Journal of Sediment Research2021,36,3:2
14Cell adhesion molecules regulate contractile ring-indepen- dent cytokinesis in Dictyostelium discoideum显示文摘在胞质分裂调查底层粘附的角色,我们建立了房间线缺乏 paxillin (PAXB ) 或 vinculin (七弦琴) ,和在 Dictyostelium discoideum 表示各自的 GFP 熔化蛋白质的那些。作为在哺乳动物的房间, GFP-PAXB 和 GFP 七弦琴在房间底部上形成了焦点的像粘附的建筑群。paxB?在暂停的房间通常,但是上种了底层,经常没能在沟的回归以后划分。paxB 的有效胞质分裂?在暂停的房间不因为砍帮助截去,,的力量他们也在静态的暂停文化通常划分了。双猛烈紧张缺乏 mhcA,它为肌浆球蛋白 II 编码,和 paxB 或七弦琴比各单个的大美人显示了更严重的 cytokinetic 缺点紧张。在有丝分裂的野类型的房间, GFP-PAXB 广泛地在基础膜上被散布,但是惊人地在有丝分裂的 mhcA 沿着极的边被压缩吗?房间。这些结果与我们 Dictyostelium 显示胞质分裂的二种形式的想法一致,是可收缩的戒指依赖者的并且粘附无关,并且可收缩的其它戒指无关并且粘附依赖者,并且后者要求 PAXB 和七弦琴。而且,那 paxB?房间没能面对底层粘附通常划分建议这个粘附分子可以起另外的发信号的作用。Akira Nagasaki Masamitsu Kanada Taro QP Uyeda 2009Cell Research2009,19,2:2
15Plant Organelle Positioning 显示文摘MASAMITSU WADA NORIYUKI SUETSUGU 2004Current Opinion in Plant Biology2004,7,:1
16Changes in plasma ghrelin levels, gastric ghrelin production, and body weight after Helicobacter pylori cure显示文摘Hiroyuki Osawa Hiroto Kita Hirohide Ohnishi Masamitsu Nakazato Yukari Date Christopher L. Bowlus Yumiko Ishino Eiko Watanabe Tomomi Shiiya Hiroaki Ueno Hiroko Hoshino Kiichi Satoh Kentaro Sugano 2006Journal of Gastroenterology2006,,10:1
17Distribution of atrial natriuretic polypeptide (ANP)-containing cells in the rat heart and pulmonary vein Immunohistochemical study and radioimmunoassay显示文摘Hirotaka Toshimori Masamitsu Nakazato Kiyotaka Toshimori Junko Asai Shigeru Matsukura Chikayoshi ōura Hisayuki Matsuo 1988Cell and Tissue Research1988,,3:1
18Herpesvirus BACs: Past, Present, and Future显示文摘Charles Warden Qiyi Tang Hua Zhu Masamitsu Yamaguchi 2010Journal of Biomedicine and Biotechnology2010,,:1
19Recent progress in fiber optic antennas for EMC measurement显示文摘Masamitsu Kuwabara N 1992IEICE Trans on Communications1992,75,3:1
20Photochemically Induced Acid-catalyzed Desiylation of Polymer Films显示文摘Masamitsu Shirai Takahiro Miwa Masahiro Tsunooka 1995Chem Mater1995,7,4:1
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