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1Gut microbiota and host metabolism in liver cirrhosis显示文摘The gut microbiota has the capacity to produce a diverse range of compounds that play a major role in regulatingthe activity of distal organs and the liver is strategically positioned downstream of the gut. Gut microbiota linked compounds such as short chain fatty acids, bile acids, choline metabolites, indole derivatives, vitamins, polyamines, lipids, neurotransmitters and neuroactive compounds, and hypothalamic-pituitary-adrenal axis hormones have many biological functions. This review focuses on the gut microbiota and host metabolism in liver cirrhosis. Dysbiosis in liver cirrhosis causes serious complications, such as bacteremia and hepatic encephalopathy, accompanied by small intestinal bacterial overgrowth and increased intestinal permeability. Gut dysbiosis in cirrhosis and intervention with probiotics and synbiotics in a clinical setting is reviewed and evaluated. Recent studies have revealed the relationship between gut microbiota and host metabolism in chronic metabolic liver disease, especially, non-alcoholic fatty liver disease, alcoholic liver disease, and with the gut microbiota metabolic interactions in dysbiosis related metabolic diseases such as diabetes and obesity. Recently, our understanding of the relationship between the gut and liver and how this regulates systemic metabolic changes in liver cirrhosis has increased. The serum lipid levels of phospholipids, free fatty acids, polyunsaturated fatty acids, especially, eicosapentaenoic acid, arachidonic acid, and docosahexaenoic acid have significant correlations with specific fecal flora in liver cirrhosis. Many clinical and experimental reports support the relationship between fatty acid metabolism and gut-microbiota. Various blood metabolome such as cytokines, amino acids, and vitamins are correlated with gut microbiota in probioticstreated liver cirrhosis patients. The future evaluation of the gut-microbiota-liver metabolic network and the intervention of these relationships using probiotics, synbiotics, and prebiotics, with sufficient nutrition could aid the development of treatments and prevention for liver cirrhosis patients.Makoto Usami Makoto Miyoshi Hayato Yamashita 2015World Journal of Gastroenterology2015,21,41:44
2比较内耳内淋巴显像和耳蜗电图及甘油试验在梅尼埃病诊断中的价值显示文摘目的:研究甘油试验、耳蜗电图、3T MRI在梅尼埃病(MD)患者中的关系。方法:评估20例患者,把稀释的钆造影剂通过鼓室注射入患者双侧的鼓室腔,24h后,通过3T MRI评估膜迷路积水的程度,此外为检测耳蜗积水,进行耳蜗电图和甘油试验。结果:经耳蜗电图检测,11例(55%)患者有阳性结果。经甘油试验检测,12例(60%)患者有阳性结果。同时采用甘油试验和耳蜗电图检测同一组患者时,75%的患者有阳性结果。用钆造影剂的3T MRI检查,19例(95%)患者有阳性结果。结论:与耳蜗电图及甘油试验检测相比,鼓室内注射钆造影剂的3T MRI,对内耳膜迷路积水的诊断更有价值。HISAKUNI FUKUOKA YUTAKA TAKUMI KEITA TSUKADA MAIKO MIYAGAWA TOMOHIRO OGUCHI HITOSHI UEDA MASUMI KADOYA SHIN-ICHI USAMI 张甦琳 孔维佳 2012临床耳鼻咽喉头颈外科杂志2012,26,19:16
3Serum autotaxin levels are correlated with hepatic fibrosis and ballooning in patients with non-alcoholic fatty liver disease显示文摘AIM To examine the relationship between serum autotaxin(ATX) concentrations and clinicopathological findings in non-alcoholic fatty liver disease(NAFLD) patients.METHODS One hundred eighty-six NAFLD patients who had undergone liver biopsy between 2008 and 2017 were retrospectively enrolled.Serum samples were collected at the time of biopsy and ATX was measured by enzyme immunoassays.Sera obtained from 160 healthy,nonobese individuals were used as controls.Histological findings were graded according to an NAFLD scoring system and correlations with serum ATX were calculated by Spearman's test.Diagnostic accuracy was evaluated using the area under the receiver operating characteristic curve(AUC).Cut-off values were identified by the Youden index,and the nearest clinically applicable value to the cutoff was considered the optimal threshold for clinical convenience.RESULTS Serum ATX levels were significantly higher in NAFLD patients than in controls(0.86 mg/L vs 0.76 mg/L,P < 0.001) and correlated significantly with ballooning score and fibrosis stage(r = 0.36,P < 0.001 and r = 0.45,P < 0.001,respectively).Such tendencies were stronger in female patients.There were no remarkable relationships between ATX and serum alanine aminotransferase,lipid profiles,or steatosis scores.The AUC values of ATX for predicting the presence of fibrosis(≥ F1),significant fibrosis(≥ F2),severe fibrosis(≥ F3),and cirrhosis(F4),were all more than 0.70 in respective analyses.CONCLUSION Serum ATX levels may at least partially reflect histological severity in NAFLD.Naoyuki Fujimori Takeji Umemura Takefumi Kimura Naoki Tanaka Ayumi Sugiura Tomoo Yamazaki Satoru Joshita Michiharu Komatsu Yoko Usami Kenji Sano Koji Igarashi Akihiro Matsumoto Eiji Tanaka 2018World Journal of Gastroenterology2018,24,11:6
4Hemorrhagic shock due to submucosal esophageal hematoma along with mallory-weiss syndrome:A case report显示文摘BACKGROUND Esophageal submucosal hematoma is a rare condition.Although the exact etiology remains uncertain,vessel fragility with external factors is believed to have led to submucosal bleeding and hematoma formation;the vessel was ruptured by a sudden increase in pressure due to nausea,and the hematoma was enlarged by antiplatelet or anticoagulant therapy.Serious conditions are rare,with a better prognosis.We present the first known case of submucosal esophageal hematoma-subsequent hemorrhagic shock due to Mallory-Weiss syndrome.CASE SUMMARY A 73-year-old female underwent endovascular treatment for an unruptured cerebral aneurysm.The patient received aspirin and clopidogrel before surgery and heparin during surgery,and was well during the surgery.Several hours after returning to the ICU,she complained of chest discomfort,vomited 500 m L of fresh blood,and entered hemorrhagic shock.Esophageal submucosal hematoma with Mallory-Weiss syndrome was diagnosed through an endoscopic examination and computed tomography.In addition to a massive fluid and erythrocyte transfusion,we performed a temporary compression for hemostasis with a Sengstaken-Blakemore(S-B)tube.Afterwards,she became hemodynamically stable.On postoperative day 1,we performed an upper gastrointestinal endoscopy and confirmed no expansion of the hematoma nor any recurring bleeding;therefore,we removed the S-B tube and clipped the gastric mucosal laceration at the esophagogastric junction.We started oral intake on postoperative day 10.The patient made steady progress,and was discharged on postoperative day 33.CONCLUSION We present the first known case of submucosal esophageal hematoma subsequent hemorrhagic shock due to Mallory-Weiss syndrome.Jiro Oba Daisuke Usuda Shiho Tsuge Riki Sakurai Kenji Kawai Shun Matsubara Risa Tanaka Makoto Suzuki Hayabusa Takano Shintaro Shimozawa Yuta Hotchi Kenki Usami Shungo Tokunaga Ippei Osugi Risa Katou Sakurako Ito Kentaro Mishima Akihiko Kondo Keiko Mizuno Hiroki Takami Takayuki Komatsu Tomohisa Nomura Manabu Sugita 2022World Journal of Clinical Cases2022,10,27:3
5Inhibition of TRPC6 Channel Activity Contributes to the Antihypertrophic Effects of Natriuretic Peptides-Guanylyl Cyclase-A Signaling in the Heart显示文摘Hideyuki Kinoshita Koichiro Kuwahara Motohiro Nishida Zhong Jian Xianglu Rong Shigeki Kiyonaka Yoshihiro Kuwabara Hitoshi Kurose Ryuji Inoue Yasuo Mori Yuhao Li Yasuaki Nakagawa Satoru Usami Masataka Fujiwara Yuko Yamada Takeya Minami Kenji Ueshima Kazuwa 2010Circulation Research2010,,12:2
6Running-in friction of hip joint replacements can be significantly reduced:The effect of surface-textured acetabular cup显示文摘Hip joint replacements represent the most effective way of treatment for patients suffering from joint diseases.Despite the rapid improvement of implant materials over the last few decades,limited longevity associated with wear-related complications persists as the main drawback.Therefore,improved tribological perfor-mance is required in order to extend the service life of replacements.The effect of surface texturing of ultra-high molecular weight polyethylene(UHMWPE)acetabular cup was investigated in the present study.Unique tilling method was utilized for manufacturing the dimples with controlled diameter and depths on the contact surface of the cup.The experiments with four commercial femoral components and two model lubricants were realized.The main attention was paid to a coefficient of friction considering the differences between the original and the dimpled cups.Results showed remarkable lowering of friction,in general.Focusing on the simulated human synovial fluid,friction was reduced by 40%(alumina ceramic),38.8%(zirconia toughened ceramic),25.5%(metal),and 9.9%(oxinium).In addition,the dimples helped to keep the friction stable without fluctuations.To conclude,the paper brings a new insight into frictional behaviour of the hip replacements during running-in phase which is essential for overall implant lifespan.It is believed that proper surface texturing may rapidly improve the life quality of millions of patients and may lead to considerable financial savings.David NECAS Hatsuhiko USAMI Tatsuya NIIMI Yoshinori SAWAE Ivan KRUPKA Martin HARTL 2020Friction2020,8,6:2
7Angiotensin receptor blocker neprilysin inhibitors显示文摘Heart failure(HF)is a clinical syndrome that results from a structural or functional cardiac disorder that reduces the ability of the ventricle of the heart to fill with,or eject,blood.It is a multifaceted clinical condition that affects up to 2%of the population in the developed world,and is linked to significant morbidity and mortality;it is therefore considered a major concern for public health.Regarding the mechanism of HF,three neurohumoral factors-the reninangiotensin-aldosterone system,the sympathetic nervous system,and natriuretic peptides—are related to the pathology of chronic HF(CHF),and the targets of treatment.Angiotensin receptor blocker and neprilysin inhibitor(angiotensinreceptor neprilysin inhibitor),namely sacubitril/valsartan(SAC/VAL),has been introduced as a treatment for CHF.SAC/VAL is an efficacious,safe,and costeffective therapy that improves quality of life and longevity in patients with HF with reduced ejection fraction(HFrEF),and reduces hospital admissions.An inhospital initiation strategy offers a potential new avenue to improve the clinical uptake of SAC/VAL.In the last five years,SAC/VAL has been established as a cornerstone component of comprehensive disease-modifying medical therapy in the management of chronic HFrEF.On the other hand,further work,with carefully designed and controlled preclinical studies,is necessary for understanding the molecular mechanisms,effects,and confirmation of issues such as long-term safety in both human and animal models.Daisuke Usuda Toshihiro Higashikawa Yuta Hotchi Kenki Usami Shintaro Shimozawa Shungo Tokunaga Ippei Osugi Risa Katou Sakurako Ito Toshihiko Yoshizawa Suguru Asako Kentaro Mishima Akihiko Kondo Keiko Mizuno Hiroki Takami Takayuki Komatsu Jiro Oba Tomohisa Nomura Manabu Sugita 2021World Journal of Cardiology2021,13,8:2
8The preoperative plasma D-dimer level is an independent prognostic factor in patients with completely resected non-small cell lung cancer显示文摘Koichi Fukumoto Tetsuo Taniguchi Noriyasu Usami Koji Kawaguchi Takayuki Fukui Futoshi Ishiguro Shota Nakamura Kohei Yokoi 2015Surgery Today2015,,1:2
9Oral treatment with nicorandil at discharge is associated with reduced mortality after acute myocardial infarction显示文摘Yasuhiko Sakata Daisaku Nakatani Masahiko Shimizu Shinichiro Suna Masaya Usami Sen Matsumoto Masahiko Hara Satoru Sumitsuji Shigeo Kawano Katsuomi Iwakura Toshimitsu Hamasaki Hiroshi Sato Shinsuke Nanto Masatsugu Hori Issei Komuro 2011Journal of Cardiology2011,,:2
10Study on a concrete filled structure for nuclear power plants显示文摘M. Takeuchi M. Narikawa I. Matsuo K. Hara S. Usami 1998Nuclear Engineering and Design1998,,2:2
11Pyrochemical reduction of uranium dioxide and plutonium dioxide by lithium metal显示文摘T Usami M Kurata T Inoue H.E Sims S.A Beetham J.A Jenkins 2002Journal of Nuclear Materials2002,,1:2
12显示文摘 Gotoh Y Umemoto H 1993J Appl Poly Sci: Appl Polym Sym1993,52,:1
13Characterization of chron- ic idiopathic thrombocytopenic purpura in Japanese children: a retrospective multi-centerstudy 显示文摘Kubota M Adachi S Usami I 2010Int J Hematol2010,91,2:1
14Preparation of organic silica films with low delectric constant from the liquid phase显示文摘Usami K I Sumimura K Matsumura M 1998Jpn J Appl Phys1998,37,:1
15Enteral nutrition prevents bacterial translocation but does not improve survival during acute pancreatitis显示文摘Kotani J Usami M Nomura H 1999Arch Surg1999,134,:1
16Cryogenic small-flaw strength and creep deformation of epoxy resins 显示文摘Usami S Ejima H Suzuki T 1999Cryogenics1999,39,9:1
17Tumor suppressor in lung cancer-1 as a novel amelo-blast adhesion molecule and its downreg-ulation in ameloblastoma显示文摘Usami Y Ito A Ohnuma K Fuku T 2007Pathol Int2007,57,2:1
18Welded box compression members 显示文摘Usami T Fukumoto Y 1984Journal of Structural Engineering ASCE1984,110,10:1
19Prevention of infectionin dental procedures显示文摘Matsuyama M Usami L Masuda K t al 2007J Hosp infect2007,3,1:1
20The effect of adding silica to zirconia to counteract zireonia's tendency to degrade at low tem- peratures 显示文摘Nakamura T Usami H Ohnishi H 2011Dent Mater2011,30,3:1
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