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1青藏高原表层土壤的日冻融循环显示文摘由于土壤与大气之间的能量和水分交换主要发生在界面层,因此在研究地气相互作用时,浅层土壤的冻融状况尤为重要.根据中日国际合作项目CEOP/CAMP-Tibet的观测结果分析发现,就青藏高原中部那曲附近而言,表层土壤真正冻结的日数较少(1个月左右).而存在日冻融循环过程的日数则较多(6个月左右).土壤冻融状态的频繁变化,会极大地影响土壤和大气之间的水分和能量的交换过程.指出土壤在不同状态(完全消融、完全冻结和存在日冻融循环)下,土壤与大气之间的相互作用过程是个值得深入研究的问题.杨梅学 姚檀栋 Hirose Nozomu Hideyuki Fujii 2006科学通报2006,51,16:63
2Community structure of ammonia-oxidizing bacteria under long-term application of mineral fertilizer and organic manure in a sandy loam soil显示文摘Chu HY Fujii T Morimoto S Lin XG Yagi K Hu JL Zhang JB 2007中国生物学文摘2007,21,6:77
3Diurnal freeze/thaw cycles of the ground surface on the Tibetan Plateau显示文摘The exchange of energy and water between the lithosphere and atmosphere mainly takes place at the ground surface. Therefore, freeze/thaw condition at the ground surface is an important factor in ex- amining the interactions between the land surface and atmosphere. Based on the observation data obtained by CEOP/CAMP-Tibet, the diurnal freeze/thaw cycles of the ground surface near Naqu, central Tibetan Plateau was preliminarily analyzed. The results show that the surface layer was completely frozen for approximately one month. However, the time that the ground surface experienced diurnal freeze/thaw cycles was about 6 months. The high frequency of freeze/thaw cycles at the ground surface significantly influences water and energy exchanges between ground and atmosphere over half a year. The interaction processes between the ground and atmosphere under different soil conditions (such as complete thaw, complete freeze and diurnal freeze/thaw cycles) are issues worthy of further examina- tion.YANG MeiXue YAO TanDong GOU XiaoHua HIROSE Nozomu FUJII Hide Yuki HAO LiSheng D. F. LEVIA 2007Chinese Science Bulletin2007,52,1:44
4Surgical techniques and postoperative management to prevent postoperative pancreatic fistula after pancreatic surgery显示文摘Postoperative pancreatic fistula (POPF) is one of the most severe complications after pancreatic surgeries. POPF develops as a consequence of pancreatic juice leakage from a surgically exfoliated surface and/or anastomotic stump, which sometimes cause intraperitoneal abscesses and subsequent lethal hemorrhage. In recent years, various surgical and perioperative attempts have been examined to reduce the incidence of POPF. We reviewed several well-designed studies addressing POPF-related factors, such as reconstruction methods, anastomotic techniques, stent usage, prophylactic intra-abdominal drainage, and somatostatin analogs, after pancreaticoduodenectomy and distal pancreatectomy, and we assessed the current status of POPF. In addition, we also discussed the current status of POPF in minimally invasive surgeries, laparoscopic surgeries, and robotic surgeries.Hiromichi Kawaida Hiroshi Kono Naohiro Hosomura Hidetake Amemiya Jun Itakura Hideki Fujii Daisuke Ichikawa 2019World Journal of Gastroenterology2019,25,28:43
5Achieving the best bowel preparation for colonoscopy显示文摘Bowel preparation is a core issue in colonoscopy,as it is closely related to the quality of the procedure.Patients often find that bowel preparation is the most unpleasant part of the examination.It is widely accepted that the quality of cleansing must be excellent to facilitate detecting neoplastic lesions.In spite of its importance and potential implications,until recently,bowel preparation has not been the subject of much study.The most commonly used agents are high-volume polyethylene glycol(PEG)electrolyte solution and sodium phosphate.There has been some confusion,even in published meta-analyses,regarding which of the two agents provides better cleansing.It is clear now that both PEG and sodium phosphate are effectivewhen administered with proper timing.Consequently,the timing of administration is recognized as one of the central factors to the quality of cleansing.The bowel preparation agent should be administered,at least in part,a few hours in advance of the colonoscopy.Several low volume agents are available,and either new or modified schedules with PEG that usually improve tolerance.Certain adjuvants can also be used to reduce the volume of PEG,or to improve the efficacy of other agents.Other factors apart from the choice of agent can improve the quality of bowel cleansing.For instance,the effect of diet before colonoscopy has not been completely clarified,but an exclusively liquid diet is probably not required,and a low-fiber diet may be preferable because it improves patient satisfaction and the quality of the procedure.Some patients,such as diabetics and persons with heart or kidney disease,require modified procedures and certain precautions.Bowel preparation for pediatric patients is also reviewed here.In such cases,PEG remains the most commonly used agent.As detecting neoplasia is not the main objective with these patients,less intensive preparation may suffice.Special considerations must be made for patients with inflammatory bowel disease,including safety and diagnostic issues,so that the most adequate agent is chosen.Identifying neoplasia is one of the main objectives of colonoscopy with these patients,and the target lesions are often almost invisible with white light endoscopy.Therefore excellent quality preparation is required to find these lesions and to apply advanced methods such as chromoendoscopy.Bowel preparation for patients with lower gastrointestinal bleeding represents a challenge,and the strategies available are also reviewed here.Adolfo Parra-Blanco Alex Ruiz Manuel Alvarez-Lobos Ana Amorós Juan Cristóbal Gana Patricio Ibáez Akiko Ono Takahiro Fujii 2014World Journal of Gastroenterology2014,20,47:37
6Magnifying colonoscopy as a non-biopsy technique for differential diagnosis of non-neoplastic and neoplastic lesions显示文摘瞄准:为了澄清与放大结肠镜检查观察的粘膜地窟模式是否对可行,把非肿瘤的息肉与肿瘤的息肉区分开来。方法:从通过 2000 年 3 月的 1999 年 6 月,有 210 损害的 180 个连续病人与放大结肠镜诊断了(CF-200Z,天堂光有限公司,东京,日本) 被注册。有 0.2% 靛青洋红染料的放大和多彩石印版内视镜检查法为粘膜地窟观察被用于每损害。损害出现打字我和 II 地窟模式被活体检视组织学地认为非肿瘤、检验,而损害证明到 V 地窟模式的类型 III 被移开内视镜的联盟者或通过手术。内视镜的诊断和 histologic 诊断的关联然后被调查。结果:在内视镜检查法, 24 损害证明我或 II 坑模式,和 186 损害显示出的一种类型打 III 到 V 坑模式。与 histologic 检查, 26 损害作为非肿瘤的息肉被诊断,并且 184 损害作为肿瘤的息肉被诊断。全面诊断精确性是 99.1%(208/210 ) 。敏感和特性是 92.3%(24/26 ) 并且 99.8%(184/186 ) 分别地。结论:放大结肠镜检查能作为一种非活体检视技术被使用区分肿瘤、非肿瘤的息肉。Shigeharu Kato Kuang I Fu Yasushi Sano Takahiro Fujii Yutaka Saito Takahisa Matsuda Ikuro Koba Shigeaki Yoshida Takahiro Fujimori 2006World Journal of Gastroenterology2006,12,9:31
7Cooperative function of antioxidant and redox systems against oxidative stress in male reproductive tissues显示文摘Reactive oxygen species (ROS) are produced under oxidative stress, such as high oxygen concentration and during the metabolic consumption of oxygen molecules. Male reproductive tissues appear to be continuously exposed to ROS produced by active metabolism. In addition, spermatozoa must pass through a high oxygen environ-ment during the mating process. Thus, to maintain viable reproductive ability, a protective mechanism against oxida-tive stress is of importance. Here, we overview our current understanding of the cooperative function of antioxidative and redox systems that are involved in male fertility. Superoxide dismutase and glutathione peroxidase are major enzymes that scavenge harmful ROS in male reproductive organs. In turn, glutathione and thioredoxin systems constitute the main redox systems that repair oxidized and damaged molecules and also play a role in regulating a variety of cellular functions. While glutathione functions as an antioxidant by donating electrons to glutathione peroxidase and thioredoxin donates electrons to peroxiredoxin as a counterpart of glutathione peroxidase. In addition,aldo-keto reductases, which detoxify carbonyl compounds produced by oxidative stress, are present at high levels in the epithelia of the genital tract and Sertoli cells of the testis. Since these systems are involved in cross-talk, a comprehensive understanding will be required to maintain the physiological functions of male reproductive system.( Asian J Andro12003 Sep; 5: 231-242)Junichi Fujii Yoshihito Iuchi Shingo Matsuki Tatsuya Ishii 2003Asian Journal of Andrology2003,5,3:19
8外来入侵杂草空心莲子草与本土杂草莲子草的化感作用潜力比较显示文摘为确定外来入侵杂草空心莲子草的化感作用潜力,以我国本土生长的莲子草为对照采用“三明治”生测法,测定了空心莲子草和莲子草及其不同器官对靶标莴苣和无芒稗根长和芽长的抑制率。结果表明,空心莲子草叶片处理对莴苣和无芒稗根长的抑制率分别为81%和51%,对莴苣和无芒稗芽长的抑制率分别为49%和48%,显著高于空白对照。但与莲子草相比,差异不显著。空心莲子草根系对莴苣的根长平均抑制率为54%,显著高于茎和叶片。随着样品用量增加,空心莲子草对莴苣根长的抑制率显著提高,其50mg叶片处理对莴苣根长的抑制率为83%,显著高于10mg处理的54%和30mg处理的61%。余柳青 Yoshiharu FUJII 周勇军 张建萍 陆永良 玄松南 2007中国水稻科学2007,21,1:17
9Mutual interaction between oxidative stress and endoplasmic reticulum stress in the pathogenesis of diseases specifically focusing on non-alcoholic fatty liver disease显示文摘Reactive oxygen species(ROS) are produced during normal physiologic processes with the consumption of oxygen. While ROS play signaling roles, when they are produced in excess beyond normal antioxidative capacity this can cause pathogenic damage to cells. The majority of such oxidation occurs in polyunsaturated fatty acids and sulfhydryl group in proteins, resulting in lipid peroxidation and protein misfolding, respectively. The accumulation of misfolded proteins in the endoplasmic reticulum(ER) is enhanced under conditions of oxidative stress and results in ER stress, which, together, leads to the malfunction of cellular homeostasis. Multiple types of defensive machinery are activated in unfolded protein response under ER stress to resolve this unfavorable situation. ER stress triggers the malfunction of protein secretion and is associated with a variety of pathogenic conditions including defective insulin secretion from pancreatic β-cells and accelerated lipid droplet formation in hepatocytes. Herein we use nonalcoholic fatty liver disease(NAFLD) as an illustration of such pathological liver conditions that result from ER stress in association with oxidative stress. Protecting the ER by eliminating excessive ROS viathe administration of antioxidants or by enhancing lipidmetabolizing capacity via the activation of peroxisome proliferator-activated receptors represent promising therapeutics for NAFLD.Junichi Fujii Takujiro Homma Sho Kobayashi Han Geuk Seo 2018World Journal of Biological Chemistry2018,9,1:17
10Pneumatosis cystoides intestinalis following alpha-glucosidase inhibitor treatment:A case report and review of the literature显示文摘A 69-year-old man was diagnosed as having myasthenia gravis (MG) in September 2004,and treated with thymectomy and prednisolone. He was then diagnosed as having steroid-induced diabetes mellitus,and received sulfonylurea (SU) therapy in May 2005. An alpha-glucosidase inhibitor (αGI) was added in March 2006,resulting in good glycemic control. He experienced symptoms of abdominal distention,increased flatus,and constipation in October 2007,and was admitted into our hospital in late November with hematochezia. Plain abdominal radiography revealed small linear radiolucent clusters in the wall of the colon. Computed tomography (CT) showed intramural air in the sigmoid colon. Colonoscopy revealed multiple smooth surfaced hemispherical protrusions in the sigmoid colon. The diagnosis of pneumatosis cystoides intestinalis (PCI) was made on the basis of these findings. As the αGI voglibose was suspected as the cause of this patient's PCI,treatment was conservative,ceasing voglibose,with fasting and fluid supplementation. The patient progressed well,and was discharged 2 wk later. Recently,several reports of PCI associated with αGI therapy have been published,predominantly in Japan where αGIs are commonly used. If the use of αGIs becomes more widespread,we can expect more reports of this condition on a global scale. The possibility of PCI should be considered in diabetic patients complaining of gastrointestinal symptoms,and the gastrointestinal tract should be thoroughly investigated in these patients.Tatsuhiro Tsujimoto Erika Shioyama Kei Moriya Hideto Kawaratani Yasuyo Shirai Masahisa Toyohara Akira Mitoro Jun-ichi Yamao Hisao Fujii Hiroshi Fukui 2008World Journal of Gastroenterology2008,14,39:16
11Feasibility of cold snare polypectomy in Japan: A pilot study显示文摘AIM: To investigate the feasibility of cold snare polypectomy(CSP) in Japan.METHODS: The outcomes of 234 non-pedunculated polyps smaller than 10 mm in 61 patients who underwent CSP in a Japanese referral center were retrospectively analyzed. The cold snare polypectomies were performed by nine endoscopists with no prior experience in CSP using an electrosurgical snare without electrocautery.RESULTS: CSPs were completed for 232 of the 234 polyps. Two(0.9%) polyps could not be removed without electrocautery. Immediate postpolypectomy bleeding requiring endoscopic hemostasis occurred in eight lesions(3.4%; 95%CI: 1.1%-5.8%), but all were easily managed. The incidence of immediate bleeding after CSP for small polyps(6-9 mm) was significantly higher than that of diminutive polyps(≤ 5 mm; 15% vs 1%, respectively). Three(5%) patients complained of minor bleeding after the procedure but required no intervention. The incidence of delayed bleeding requiringendoscopic intervention was 0.0%(95%CI: 0.0%-1.7%). In total, 12% of the resected lesions could not be retrieved for pathological examination. Tumor involvement in the lateral margin could not be histologically assessed in 70(40%) lesions.CONCLUSION: CSP is feasible in Japan. However, immediate bleeding, retrieval failure and uncertain assessment of the lateral tumor margin should not be underestimated. Careful endoscopic diagnosis before and evaluation of the tumor residue after CSP are recommended when implementing CSP in Japan.Yoji Takeuchi Takeshi Yamashina Noriko Matsuura Takashi Ito Mototsugu Fujii Kengo Nagai Fumi Matsui Tomofumi Akasaka Noboru Hanaoka Koji Higashino Hiroyasu Iishi Ryu Ishihara Henrik Thorlacius Noriya Uedo 2015World Journal of Gastrointestinal Endoscopy2015,7,17:14
12Clinical utility of the platelet-lymphocyte ratio as a predictor of postoperative complications after radical gastrectomy for clinical T2-4 gastric cancer显示文摘AIM To identify simple and sensitive markers for postoperative complications after gastrectomy, the predictive values were compared among candidate preoperative factors. METHODS Three-hundred and twelve patients with previously untreated clinical T2-4 gastric cancer who underwent a D2 standard gastrectomy(distal gastrectomy or total gastrectomy) were included in the analysis.Correlations between 21 parameters that can be determined by preoperative routine blood tests and clinically relevant postoperative complications(grade Ⅱ or higher according to the Clavien-Dindo classification) were evaluated. The optimal cutoff values and clinical significance of the selected markers were further evaluated by subgroup analyses according to age, body mass index, operative procedure and clinical disease stage.RESULTS Sixty-six patients(21.1%) experienced grade Ⅱ or higher postoperative complications. The plateletlymphocyte ratio(PLR, total lymphocyte count/platelet count × 100) exhibited the highest area under the curve value(0.639) for predicting postoperative complications among the 21 parameters, and the optimal cutoff value was determined to be 0.71(sensitivity = 70%, specificity = 56%). In the univariate analysis, the odds ratio of a low PLR for the occurrence of postoperative complications was 2.94(95%CI: 1.66-5.35, P < 0.001), and a multivariate binomial logistic analysis involving other potential risk factors identified a low PLR as an independent risk factor for postoperative complications(OR = 3.32, 95%CI: 1.82-6.25, P < 0.001). In subgroups classified according to age, body mass index, operative procedure and clinical disease stage, the low PLR group exhibited an increased incidence of postoperative complications. CONCLUSION The preoperative PLR is a simple and useful predictor of complications after curative gastrectomy in patients with clinical T2-4 gastric cancer.Kenichi Inaoka Mitsuro Kanda Hiroaki Uda Yuri Tanaka Chie Tanaka Daisuke Kobayashi Hideki Takami Naoki Iwata Masamichi Hayashi Yukiko Niwa Suguru Yamada Tsutomu Fujii Hiroyuki Sugimoto Kenta Murotani Michitaka Fujiwara Yasuhiro Kodera 2017World Journal of Gastroenterology2017,23,14:13
13Impact of concomitant use of proton pump inhibitors and clopidogrel or ticagrelor on clinical outcomes in patients with acute coronary syndrome显示文摘BackgroundThere 是在质子泵禁止者(PPI ) 和 clopidogrel 之间的可能的不利相互作用上的大争论。另外, PPI 的使用是否少些影响 ticagrelor 遗体的临床的功效,知道。在经皮的冠的干预(一种总线标准) .MethodsWe 回顾地从 “ 分析了数据以后,我们试图与急性冠的症候群(交流)在病人在临床的结果上决定 PPI 和 clopidogrel 或 ticagrelor 的伴随物管理的影响;真实 world” ;,国际,在 2003 和 2014 之间的多中心登记( n = 15,401 )并且在1年的合成主要端点上估计了 PPI 和 clopidogrel 或 ticagrelor 的伴随物管理的影响(所有原因死亡收到 PPI 的病人更老,更经常女性,并且是更可能的有 comorbidities。没有协会为收到 clopidogrel 的病人在 PPI 使用和主要端点之间被观察(调整 HR:1.036;95% CI:0.903-1.189 ) 或 ticagrelor (调整 HR:2.320;95% CI:0.875-6.151 )(P 相互作用 = 0.2004 ) 。同样, PPI 的使用没与所有原因死亡,重新梗塞,或与交流后面的一种总线标准的为与任何一个 clopidogrel 对待的病人或 ticagrelor.ConclusionsIn 病人的严重流血的减少的风险的增加的风险被联系, PPI 的伴随物使用没在收到 clopidogrel 或 ticagrelor 的病人与不利结果的增加的风险被联系。我们的调查结果显示与 clopidogrel 或 ticagrelor 在联合使用 PPI 是合理的,特别在有胃肠的流血的更高的风险的病人。Yan YAN Xiao WANG Jing-Yao FAN Shao-Ping NIE Sergio Raposeiras-Roubin Emad Abu-Assi Jose P Simao Henriques Fabrizio D'Ascenzo Jorge Saucedo Jose R Gonzfilez-Juanatey Stephen B Wilton Wouter J Kikkert Ivlin Nufiez-Gil Albert Ariza-Sole Xian-Tao SONG Dimitrios Alexopoulos Christoph Liebetrau Tetsuma Kawaji Claudio Moretti Zenon Huczek Toshiharu Fujii Luis C Correia Masa-aki Kawashiril Sasko Kedev 2016Journal of Geriatric Cardiology2016,13,3:12
14Nutritional status in relation to lifestyle in patients with compensated viral cirrhosis显示文摘AIM:To assess the nourishment status and lifestyle of non-hospitalized patients with compensated cirrhosis by using noninvasive methods.METHODS:The subjects for this study consisted of 27 healthy volunteers,59 patients with chronic viral hepatitis,and 74 patients with viral cirrhosis,from urban areas.We assessed the biochemical blood tests,anthropometric parameters,diet,lifestyle and physical activity of the patients.A homeostasis model assessment-insulin resistance(HOMA-IR) value of ≥ 2.5 was considered to indicate insulin resistance.We measured height,weight,waist circumference,arm circumference,triceps skin-fold thickness,and handgrip strength,and calculated body mass index,arm muscle circumference(AMC),and arm muscle area(AMA).We interviewed the subjects about their dietary habits and lifestyle using health assessment computer software.We surveyed daily physical activity using a pedometer.Univariate and multivariate logistic regression modeling were used to identify the relevant factors for insulin resistance.RESULTS:The rate of patients with HOMA-IR ≥ 2.5(which was considered to indicate insulin resistance) was 14(35.9%) in the chronic hepatitis and 17(37.8%) in the cirrhotic patients.AMC(%)(control vs chronic hepatitis,111.9% ± 10.5% vs 104.9% ± 10.7%,P = 0.021;control vs cirrhosis,111.9% ± 10.5% vs 102.7% ± 10.8%,P = 0.001) and AMA(%)(control vs chronic hepatitis,128.2% ± 25.1% vs 112.2% ± 22.9%,P = 0.013;control vs cirrhosis,128.2% ± 25.1% vs 107.5% ± 22.5%,P = 0.001) in patients with chronic hepatitis and liver cirrhosis were significantly lower than in the control subjects.Handgrip strength(%) in the cirrhosis group was significantly lower than in the controls(control vs cirrhosis,92.1% ± 16.2% vs 66.9% ± 17.6%,P < 0.001).The results might reflect a decrease in muscle mass.The total nutrition intake and amounts of carbohydrates,protein and fat were not significantly different amongst the groups.Physical activity levels(kcal/d)(control vs cirrhosis,210 ± 113 kcal/d vs 125 ± 74 kcal/d,P = 0.001),number of steps(step/d)(control vs cirrhosis,8070 ±3027 step/d vs 5789 ± 3368 step/d,P = 0.011),and exercise(Ex)(Ex/wk)(control vs cirrhosis,12.4 ± 9.3 Ex/wk vs 7.0 ± 7.7 Ex/wk,P = 0.013) in the cirrhosis group was significantly lower than the control group.The results indicate that the physical activity level of the chronic hepatitis and cirrhosis groups were low.Univariate and multivariate logistic regression modeling suggested that Ex was associated with insulin resistance(odds ratio,6.809;95% CI,1.288-36.001;P = 0.024).The results seem to point towards decreased physical activity being a relevant factor for insulin resistance.CONCLUSION:Non-hospitalized cirrhotic patients may need to maintain an adequate dietary intake and receive lifestyle guidance to increase their physical activity levels.Fumikazu Hayashi Chika Momoki Miho Yuikawa Yuko Simotani Etsushi Kawamura Atsushi Hagihara Hideki Fujii Sawako Kobayashi Shuji Iwai Hiroyasu Morikawa Masaru Enomoto Akihiro Tamori Norifumi Kawada Satoko Ohfuji Wakaba Fukusima Daiki Habu 2012World Journal of Gastroenterology2012,18,40:11
15Systematic review of laparoscopic vs open surgery for colorectal cancer in elderly patients显示文摘AIM: To verify the safety and validity of laparoscopic surgery for the treatment of colorectal cancer in elderly patients.METHODS: A meta-analysis was performed of a systematic search of studies on an electronic database. Studies that compared laparoscopic colectomy(LAC) in elderly colorectal cancer patients with open colectomy(OC) were retrieved, and their short and long-term outcomes compared. Elderly people were defined as 65 years old or more. Inclusion criteria were set at: Resection of colorectal cancer, comparison between laparoscopic and OC and no significant difference in backgrounds between groups.RESULTS: Fifteen studies were identified for analysis. LAC was performed on 1436 patients, and OC performed on 1810 patients. In analyses of short-term outcomes, operation time for LAC was longer than for OC(mean difference = 34.4162, 95%CI: 17.8473-50.9851, P < 0.0001). The following clinical parameters were lower in LAC than in OC: Amount of estimated blood loss(mean difference =-93.3738, 95%CI:-132.3437 to-54.4039, P < 0.0001), overall morbidity(OR = 0.5427, 95%CI: 0.4425-0.6655, P < 0.0001), incisional surgical site infection(OR = 0.6262, 95%CI: 0.4310-0.9097, P = 0.0140), bowel obstruction and ileus(OR = 0.6248, 95%CI: 0.4519-0.8638, P = 0.0044) and cardiovascular complications(OR = 0.4767, 95%CI: 0.2805-0.8101, P = 0.0062). In analyses of long-term outcomes(median follow-up period: 36.4 mo in LAC, 34.3 mo in OC), there was no significant difference in overall survival(mean difference = 0.8321, 95%CI: 0.5331-1.2990, P = 0.4187) and disease specific survival(mean difference = 1.0254, 95%CI: 0.6707-1.5675, P = 0.9209). There was also no significant difference in the number of dissected lymph nodes(mean difference =-0.1360, 95%CI:-4.0553-3.7833, P = 0.9458).CONCLUSION: LAC in elderly colorectal cancer patients had benefits in short-term outcomes compared with OC except operation time. The long-term outcomes and oncological clearance of LAC were similar to that of OC. These results support the assertion that LAC is an effective procedure for elderly patients with colorectal cancer.Shoichi Fujii Mitsuo Tsukamoto Yoshihisa Fukushima Ryu Shimada Koichi Okamoto Takeshi Tsuchiya Keijiro Nozawa Keiji Matsuda Yojiro Hashiguchi 2016World Journal of Gastrointestinal Oncology2016,8,7:10
16Effect of Ca addition on the microstructure and the mechanical properties of asymmetric double-sided friction stir welded AZ61 magnesium alloy显示文摘The effects of 2%Ca addition on the microstructure and the mechanical properties of the asymmetric double-sided friction stir welded magnesium alloy AZ61 were investigated.Compared to the Ca-free AZ61magnesium alloy,the addition of 2%Ca significantly refines the grains in the stir zone after welding.Due to the existence of thermally stable Al2Ca particles,there is no noticeable change in the grain size in the stir zone regardless of the welding heat input.The electron backscattered diffraction analysis at the center of the stir zone confirmed the significant deterioration of the(0001)texture strength from the addition of 2%Ca.The tensile test of the joint suggested that the addition of 2%Ca provides stable tensile properties to the joint regardless of the welding parameters.The critical(0001)texture strength that determines the ultimate tensile strength decreased from 20 to 15 by the Ca addition.The addition of Ca enhanced the deterioration of the plastic elongation when the(0001)texture strength increased.Mengran Zhou Yoshiaki Morisada Hidetoshi Fujii 2020Journal of Magnesium and Alloys2020,8,1:10
17Pink-color sign in esophageal squamous neoplasia, and speculation regarding the underlying mechanism显示文摘AIM:To investigate the reasons for the occurrence of the pink-color sign of iodine-unstained lesions. METHODS:In chromoendoscopy, the pink-color sign of iodine-unstained lesions is recognized as useful for the diagnosis of esophageal squamous cell carcinoma. Patients with superficial esophageal neoplasms treated by endoscopic resection were included in the study. Areas of mucosa with and without the pink-color sign were evaluated histologically. The following histologic features that were possibly associated with the pinkcolor sign were evaluated. The keratinous layer and basal cell layer were classified as present or absent. Cellular atypia was classified as high grade, moderate grade or low grade, based on nuclear irregularity, mitotic figures, loss of polarity, chromatin pattern and nuclear/cytoplasmic ratio. Vascular change was assessed based on dilatation, tortuosity, caliber change and variability in shape. Vessels with these four findings were classified as positive for vascular change. Endoscopic images of the lesions were captured immediately after iodine staining, 2-3 min after iodine staining and after complete fading of iodine staining. Quantitative analysis of color changes after iodine staining was also performed. RESULTS:A total of 61 superficial esophageal neoplasms in 54 patients were included in the study. The lesions were located in the cervical esophagus in one case, the upper thoracic esophagus in 10 cases, the mid-thoracic esophagus in 33 cases, and the lower thoracic esophagus in 17 cases. The median diameter of the lesions was 20 mm (range:2-74 mm). Of the 61 lesions, 28 were classified as pink-color sign positive and 33 as pink-color sign negative. The histologic diagnosis was high-grade intraepithelial neoplasia (HGIN) or cancer invading into the lamina propria in 26 of the 28 pink-color sign positive lesions. There was a significant association between pink-color sign positive epithelium and HGIN or invasive cancer (P = 0.0001). Univariate analyses found that absence of the keratinous layer and cellular atypia were significantly associated with the pink-color sign. After Bonferroni correction, there were no significant associations between the pink-color sign and presence of the basal membrane or vascular change. Multivariate analyses found that only absence of the keratinous layer was independently associated with the pink-color sign (OR = 58.8, 95%CI:5.5-632).Quantitative analysis was performed on 10 superficial esophageal neoplasms with both pink-color sign positive and negative areas in 10 patients. Pink-color sign positive mucosa had a lower mean color value in the late phase (pinkish color) than in the early phase (yellowish color), and had similar mean color values in the late and final phases. These findings suggest that pinkcolor positive mucosa underwent color fading from the color of the iodine (yellow) to the color of the mucosa (pink) within 2-3 min after iodine staining. Pink-color sign negative mucosa had similar mean color values in the late and early phases (yellowish color), and had a lower mean color value in the final phase (pinkish color) than in the late phase. These findings suggest that pink-color sign negative mucosa did not undergo color fading during the 2-3 min after iodine staining, and underwent color fading only after spraying of sodium thiosulfate. CONCLUSION:The pink-color sign was associated with absence of the keratinous layer. This sign may be caused by early fading of iodine staining.Ryu Ishihara Hiromitsu Kanzaki Hiroyasu Iishi Kengo Nagai Fumi Matsui Takeshi Yamashina Noriko Matsuura Takashi Ito Mototsugu Fujii Sachiko Yamamoto Noboru Hanaoka Yoji Takeuchi Koji Higashino Noriya Uedo Masaharu Tatsuta Yasuhiko Tomita Shingo Ishiguro 2013World Journal of Gastroenterology2013,19,27:10
18联合应用氯吡格雷和质子泵抑制剂对急性冠状动脉综合征患者经皮冠状动脉介入术后预后的影响显示文摘目的探讨联合应用氯吡格雷和质子泵抑制剂(PPI)对急性冠状动脉综合征(ACS)患者经皮冠状动脉介入(PCI)术后预后的影响。方法回顾性分析2003年至2014年来自10个国家(加拿大,巴西,德国,波兰,荷兰,西班牙,意大利,希腊,中国,日本)15个临床中心的ACS合并PCI术后18077例患者的临床资料。研究氯吡格雷、PPI与ACS患者PCI术后预后的关系。比较患者的基本临床特征、既往病史、生化指标、药物应用,以及终点事件的发生率情况。通过Cox回归模型进行分析及倾向性评分调整其他可能影响患者的预后因素包括人口学信息(年龄、性别)和临床指标,计算PPI这一干预因素的风险比并评价其是否能够明显影响患者的预后。结果基于国际多中心Blee MACs注册登记研究分析,排除关键数据缺失过多患者2676例。根据纳入与排除标准及倾向性评分调整整理后,再排除患者6461例,最终列队患者8940例。根据患者用药不同,将患者分为氯吡格雷+PPI组(4814例)和氯吡格雷组(4126例)。氯吡格雷+PPI组患者女性、高血压病史、高脂血症病史、糖尿病史、外周血管疾病史、既往急性心肌梗死史、慢性肾功能不全病史、消化道溃疡病史、冠状动脉旁路移植术病史、既往出血病史、恶性肿瘤病史、不稳定型心绞痛、非sT段抬高型心肌梗死、心功能Killip分级≥2级、经皮腔内冠状动脉成形术、出院后血管紧张素转换酶抑制剂/血管紧张素Ⅱ受体拮抗剂应用比例、年龄和入院时血肌酐水平明显高于氯吡格雷组[25.4%(1225/4814)比21.0%(865/4126)、59.9%(2882/4814)比49.2%(2032/4126)、48.3%(2327/4814)比42.7%(1762/4126)、26.4%(1272/4814)比22.1%(910/4126)、8.0%(386/4814)比5.6%(231/4126)、12.3%(593/4814)比10.6%(436/4126)、2.0%(98/4814)比0.7%(30/4126)、2.3%(112/4814)比1.0%(42/4126)、3.6%(172/4814)比2.2%(92/4126)、4.5%(219/4814)比3.0%(123/4126)、8.0%(387/4814)比4.7%(193/4126)、13.4%(644/4814)比9.1%(374/4126)、29.1%(1400/4814)比15.9%(656/4126)、14.5%(699/4814)比11.2%(462/4126)、56.0%(2697/4814)比55.7%(2300/4126)、75.5%(3633/4814)比68.6%(2829/4126)、(66±12)岁比(61±13)岁、(10±6)mg/L比(9±4)mg/L];且入院时血红蛋白水平和出院后β受体阻滞剂应用比例明显低于氯吡格雷组[(138±19)g/L比(141±16)g/L、80.6%(3880/4814)比83.1%(3428/4126)],差异均有统计学意义(均P〈0.05)。调整前,氯吡格雷+PPI组主要终点事件(全因死亡/再发心肌梗死/出血)发生率明显高于氯吡格雷组,差异有统计学意义(风险比为1.331,95%置信区间为1.161-1.524)。调整后,氯吡格雷+PPI组主要终点事件(全因死亡/再发心肌梗死/出血)发生率与氯吡格雷组比较,差异无统计学意义(风险比为1.036,95%置信区间为0.903-1.189)。结论ACS患者PCI术后联合应用PPI与氯吡格雷是合理的,尤其在胃肠道出血高危患者中。严研 王晓 范婧尧 聂绍平 Sergio Raposeiras-Roubin Emad Abu-Assi Jose Paulo Simao Henriques Fabrizio D'Ascenzo Jorge Saucedo Jose Ramon Gonzalez-Juanatey Stephen B. Wilton Wouter J. Kikkert Ivan Nunez-Gil Albert Ariza-Sole Dimitrios Alexopoulos Christoph Liebetrau Testuma Kawaji Claudio Moretti Zenon Huczek Toshiharu Fujii Luis Claudio Correia Masa-aki Kawashiri Sasko Kedev 2017中国医药2017,12,2:10
19Effects of 5-HT2B, 5-HT3 and 5-HT4 receptor antagonists on gastrointestinal motor activity in dogs显示文摘AIM:To study the effects of 5-hydroxytryptamine(5-HT)receptor antagonists on normal colonic motor activity in conscious dogs.METHODS:Colonic motor activity was recorded using a strain gauge force transducer in 5 dogs before and after 5-HT2B,5-HT3 and 5-HT4 receptor antagonist administration.The force transducers were implanted on the serosal surfaces of the gastric antrum,terminal ileum,ileocecal sphincter and colon.Test materials or vehicle alone was administered as an intravenous bolus injection during a quiescent period of the whole colon in the interdigestive state.The effects of these receptor antagonists on normal gastrointestinal motor activity were analyzed.RESULTS:5-HT2B,5-HT3 and 5-HT4 receptor antagonists had no contractile effect on the fasting canine terminal ileum.The 5-HT3 and 5-HT4 receptor antagonists inhibited phaseⅢof the interdigestive motor complex of the antrum and significantly inhibited colonic motor activity.In the proximal colon,the inhibitory effect was dose dependent.Dose dependency,however,was not observed in the distal colon.The 5-HT2B receptor antagonist had no contractile effect on normal colonic motor activity.CONCLUSION:The 5-HT3 and 5-HT4 receptor antagonists inhibited normal colonic motor activity.The5-HT2B receptor antagonist had no contractile effect on normal colonic motor activity.Hiroki Morita Erito Mochiki Nobuyuki Takahashi Kiyoshi Kawamura Akira Watanabe Toshinaga Sutou Atsushi Ogawa Mitsuhiro Yanai Kyoichi Ogata Takaaki Fujii Tetsuro Ohno Souichi Tsutsumi Takayuki Asao Hiroyuki Kuwano 2013World Journal of Gastroenterology2013,19,39:9
20Bone status assessment in Japanese subjects using speed of sound along the tibiaNobuyuki Miyatake Hiroko Muta Chigusa Murota Mari Haga Masafumi Fujii 2002Chinese Medical Journal2002,,2:9
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