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1Microproteinuria in patients with inflammatory bowel disease:Is it associated with the disease activity or the treatment with 5-aminosalicylic acid?显示文摘瞄准:调查在有煽动性的肠疾病(IBD ) 的病人的 microproteinuria 是否与 5-aminosalicylic 酸(5-ASA ) 与疾病活动或治疗被联系。方法:我们有希望地与 IBD 在 86 个连续病人学习了 microproteinuria, 61 与 ulcerative (UC ) 并且 25 与 Crohn 的疾病(CD ) ,以前象在他们在学习的包括以后的 2 和 6 个月一样。46 个病人为 28.8 个月(范围 1-168 瞬间) 的一个时期收到了 5-ASA。Microalbuminuria (妈磅) 和尿肾的管状的蛋白质 beta2-microglobulin (beta2mGLB ) 和 beta-N-acetyl-D-glucosamidase 铺平(贝它 -- 唠叨) 一夜间在 12-h 象 creatinine 一样被决定尿收集。肿瘤坏死 factor-alpha (TNF-alpha ) 浆液层次也被测量。结果:277 大小的一个总数(194 在 UC 病人并且 83 在 CD 病人) 被执行。在 UC 和 CD 病人的反常 microproteinuria 的流行为妈磅是 12.9% 和 6.0% , 22.7% 和 27.7% 为 beta2mGLB,并且 11.3% 和 8.4% 为贝它 -- 分别地唠叨。妈磅没与 IBD 活动被联系。Beta2mGLB 和贝它 -- 唠叨尿层次被相关到 UC 活动(UCAI:P<0.01;UCEI:P<0.005 ) 。在 UC 病人和贝它的妈磅 -- 在 CD 病人唠叨尿层次与 TNF-alpha 浆液层次有关。一个协会在 microproteinuria 和吸烟习惯之间被注意。有 5-ASA 的治疗没被相关到 microproteinuria 的严厉或到 creatinine 的变化。结论:Microproteinuria 主要与 UC 和它的活动被联系然而并非由 5-ASA 影响了。Androniki C Poulou Konstantinos E Goumas Dimitrios C Dandakis Ioannis Tyrmpas Maria Panagiotaki Androniki Georgouli Dimitrios C Soutos Athanasios Archimandritis 2006World Journal of Gastroenterology2006,12,5:126
2Pathogenesis and clinical management of Helicobacter pylori gastric infection显示文摘Helicobacter pylori(H.pylori)is a gram-negative bacterium that infects approximately 4.4 billion individuals worldwide.However,its prevalence varies among different geographic areas,and is influenced by several factors.The infection can be acquired by means of oral-oral or fecal-oral transmission,and the pathogen possesses various mechanisms that improve its capacity of mobility,adherence and manipulation of the gastric microenvironment,making possible the colonization of an organ with a highly acidic lumen.In addition,H.pylori presents a large variety of virulence factors that improve its pathogenicity,of which we highlight cytotoxin associated antigen A,vacuolating cytotoxin,duodenal ulcer promoting gene A protein,outer inflammatory protein and gamma-glutamyl transpeptidase.The host immune system,mainly by means of a Th1-polarized response,also plays a crucial role in the infection course.Although most H.pylori-positive individuals remain asymptomatic,the infection predisposes the development of various clinical conditions as peptic ulcers,gastric adenocarcinomas and mucosa-associated lymphoid tissue lymphomas.Invasive and non-invasive diagnostic methods,each of them with their related advantages and limitations,have been applied in H.pylori detection.Moreover,bacterial resistance to antimicrobial therapy is a major challenge in the treatment of this infection,and new therapy alternatives are being tested to improve H.pylori eradication.Last but not least,the development of effective vaccines against H.pylori infection have been the aim of several research studies.Breno Bittencourt de Brito Filipe Ant?nio Fran?a da Silva Aline Silva Soares Vinícius Afonso Pereira Maria Luísa Cordeiro Santos Mariana Miranda Sampaio Pedro Henrique Moreira Neves Fabrício Freire de Melo 2019World Journal of Gastroenterology2019,25,37:84
3Treatment of gastric cancer显示文摘The authors focused on the current surgical treatment of resectable gastric cancer,and significance of periand post-operative chemo or chemoradiation.Gastric cancer is the 4thmost commonly diagnosed cancer and the second leading cause of cancer death worldwide.Surgery remains the only curative therapy,while perioperative and adjuvant chemotherapy,as well as chemoradiation,can improve outcome of resectable gastric cancer with extended lymph node dissection.More than half of radically resected gastric cancer patients relapse locally or with distant metastases,or receive the diagnosis of gastric cancer when tumor is disseminated;therefore,median survival rarely exceeds12 mo,and 5-years survival is less than 10%.Cisplatin and fluoropyrimidine-based chemotherapy,with addition of trastuzumab in human epidermal growth factor receptor 2 positive patients,is the widely used treatment in stageⅣpatients fit for chemotherapy.Recent evidence supports the use of second-line chemotherapy after progression in patients with good performanceMichele Orditura Gennaro Galizia Vincenzo Sforza Valentina Gambardella Alessio Fabozzi Maria Maddalena Laterza Francesca Andreozzi Jole Ventriglia Beatrice Savastano Andrea Mabilia Eva Lieto Fortunato Ciardiello Ferdinando De Vita 2014World Journal of Gastroenterology2014,20,7:116
4Portal vein thrombosis:Insight into physiopathology,diagnosis,and treatment显示文摘Portal vein thrombosis (PVT) is a relatively common complication in patients with liver cirrhosis, but might also occur in absence of an overt liver disease. Several causes, either local or systemic, might play an important role in PVT pathogenesis. Frequently, more than one risk factor could be identified; however, occasionally no single factor is discernable. Clinical examination, laboratory investigations, and imaging are helpful to provide a quick diagnosis, as prompt treatment might greatly affect a patient's outcome. In this review, we analyze the physiopathological mechanisms of PVT development, together with the hemodynamic and functional alterations related to this condition. Moreover, we describe the principal factors most frequently involved in PVT development and the recent knowledge concerning diagnostic and therapeutic procedures. Finally, we analyze the implications of PVT in the setting of liver transplantation and its possible influence on patients' future prognoses.Francesca R Ponziani Maria A Zocco Chiara Campanale Emanuele Rinninella Annalisa Tortora Luca Di Maurizio Giuseppe Bombardieri Raimondo De Cristofaro Anna M De Gaetano Raffaele Landolfi Antonio Gasbarrini 2010World Journal of Gastroenterology2010,16,2:75
5运动处方研究进展显示文摘目的本文试图通过对近半个世纪以来运动处方的产生及其发展过程,以及各阶段的特点进行分析和评价,为运动处方、运动康复疗法和机能评定在我国的普及应用提供理论和实践依据。方法采用计算机网络文献和资料收集法,对Medlin via Ovid、PubMed、Sport Discus、CINAHL、CAM、EMbase和EBM Cochrane Databaseof SR 7个数据库进行检索,检索词为exercise prescription、physical tness、exercise therapy、tness assessment、exercise test、randomized,检索时间均从建库至2008年6月。然后对其中的随机和非随机对照研究,以及资料较全者纳入分析讨论。结果共检索到318篇文献,但其中涉及运动处方和机能评定的随机对照试验(RCT)仅有7篇,系统评价和Meta分析各1篇。我们对其中资料较全又有代表性的93篇文献进行了系统分析讨论。结果显示:最早的运动处方和机能评定研究可以追溯到1950年,其发展与运动康复疗法的发展密不可分。二十世纪70年代是运动处方发展的初始期,首先是在身体活动与心血管健康方面提出了运动处方的概念,而后逐步提出了针对个体的运动处方,进而开始把运动处方与体能测试联系在一起讨论。二十世纪80年代运动处方开始进入了全面发展的阶段,开始用体能测试指导运动处方,并使运动处方和机能评定进入实验阶段。二十世纪90年代运动处方开始与多种运动康复疗法相结合,针对多种疾病进行干预和治疗,并与多种体能训练方法相结合指导训练和康复,成为一种主要的非药物治疗手段。进入本世纪以后,运动处方和机能评定的研究得到了全面提高,开始出现非随机对照试验和RCT,一些先进的测试手段和分析方法开始应用于机能评定和运动处方的实施。结论运动处方的发展与运动康复疗法和运动机能评定的发展是密不可分的,机能评定和体能测试是执行和实施运动处方的基础。当今,运动处方已从单一的体育锻炼方法提高到了针对多种疾病的非药物治疗手段。运动处方和机能评定的科学化已从观察性研究、群体研究,开始进入了非随机对照试验和RCT。相对其它生物学科而言,运动处方的RCT研究相对滞后,如何使运动处方获得最大的益处和最低的风险仍是值得研究的问题。步斌 侯乐荣 周学兰 韩海军 李良刚 张超慧 Maria Singh 2010中国循证医学杂志2010,10,12:78
6Bile-acid-induced cell injury and protection显示文摘Several studies have characterized the cellular and molecular mechanisms of hepatocyte injury caused by the retention of hydrophobic bile acids (BAs) in cholestatic diseases. BAs may disrupt cell membranes through their detergent action on lipid components and can promote the generation of reactive oxygen species that, in turn, oxidatively modify lipids, proteins, and nucleic acids, and eventually cause hepatocyte necrosis and apoptosis. Several pathways are involved in triggering hepatocyte apoptosis. Toxic BAs can activate hepatocyte death receptors directly and induce oxidative damage, thereby causing mitochondrial dysfunction, and induce endoplasmic reticulum stress. When these compounds are taken up and accumulate inside biliary cells, they can also cause apoptosis. Regarding extrahepatic tissues, the accumulation of BAs in the systemic circulation may contribute to endothelial injury in the kidney and lungs. In gastrointestinal cells, BAs may behave as cancer promoters through an indirect mechanism involvingoxidative stress and DNA damage, as well as acting as selection agents for apoptosis-resistant cells. The accumulation of BAs may have also deleterious effects on placental and fetal cells. However, other BAs, such as ursodeoxycholic acid, have been shown to modulate BA-induced injury in hepatocytes. The major beneficial effects of treatment with ursodeoxycholic acid are protection against cytotoxicity due to more toxic BAs; the stimulation of hepatobiliary secretion; antioxidant activity, due in part to an enhancement in glutathione levels; and the inhibition of liver cell apoptosis. Other natural BAs or their derivatives, such as cholyl-N- methylglycine or cholylsarcosine, have also aroused pharmacological interest owing to their protective properties.Maria J Perez Oscar Briz 2009World Journal of Gastroenterology2009,15,14:53
7Chaperone-mediated autophagy: roles in disease and aging显示文摘这评论集中于调停女伴的 autophagy (CMA ) ,在 lysosomes 贡献细胞内部的蛋白质的降级的解朊的系统之一。CMA 底层蛋白质有选择地通过在膜和奉献蛋白质 translocation 建筑群的双方定位的女伴的协调行动被指向到 lysosomes 和 translocated 进 lysosomal 腔。CMA 许可证的选择与在细胞的 transcriptional 程序的酶的新陈代谢的进程和子集为 CMA 支持一个调节角色的规章的目的预定了特定的蛋白质的降级。另外, CMA 通过移动贡献细胞的质量控制损坏或失灵蛋白质。这里,我们在 CMA 的分子的动力学,规定和生理学的理解描述最近的进展,并且在对象 neurodegeneration 和癌症那样的严重人的混乱的 CMA 机能障碍的贡献的支持讨论证据。Ana Maria Cuervo Esther Wong 2014Cell Research2014,24,1:57
8Endoscopic treatment of esophageal varices in patients with liver cirrhosis显示文摘Variceal bleeding is a life-threatening complication of portal hypertension with a six-week mortality rate of approximately 20%. Patients with medium- or largesized varices can be treated for primary prophylaxis of variceal bleeding using two strategies: non-selective beta-blockers(NSBBs) or endoscopic variceal ligation(EVL). Both treatments are equally effective. Patients with acute variceal bleeding are critically ill patients. The available data suggest that vasoactive drugs, combined with endoscopic therapy and antibiotics, are the best treatment strategy with EVL being the endoscopic procedure of choice. In cases of uncontrolled bleeding, transjugular intrahepatic portosystemic shunt(TIPS) with polytetrafluoroethylene(PTFE)-covered stents are recommended. Approximately 60% of the patients experience rebleeding, with a mortality rate of 30%. Secondary prophylaxis should start on day six following the initial bleeding episode. The combination of NSBBs and EVL is the recommended management, whereas TIPS with PTFE-covered stents are the preferred option in patients who fail endoscopic and pharmacologic treatment. Apart from injection sclerotherapy and EVL, other endoscopic procedures, including tissue adhesives, endoloops, endoscopic clipping and argon plasma coagulation, have been used in the management of esophageal varices. However, their efficacy and safety, compared to standard endoscopic treatment, remain to be further elucidated. There are safety issues accompanying endoscopic techniques with aspiration pneumonia occurring at a rate of approximately 2.5%. In conclusion, future research is needed to improve treatment strategies, including novel endoscopic techniques with better efficacy, lower cost, and fewer adverse events.Christos Triantos Maria Kalafateli 2014World Journal of Gastroenterology2014,20,36:53
9Surgical outcome after docetaxel-based neoadjuvant chemotherapy in locally-advanced gastric cancer显示文摘AIM:To investigate feasibility,morbidity and surgical mortality of a docetaxel-based chemotherapy regimen randomly administered before or after gastrectomy in patients suffering from locally-advanced resectable gastric cancer.METHODS:Patients suffering from locally-advanced(T3-4 any N M0 or any T N1-3 M0)gastric carcinoma,staged with endoscopic ultrasound,bone scan,computed tomography,and laparoscopy,were assigned to receive four 21 d/cycles of TCF(docetaxel 75 mg/m 2 day 1,cisplatin 75 mg/m 2 day 1,and fluorouracil 300 mg/m 2 per day for days 1-14),either before(Arm A)or after(Arm B)gastrectomy.Operative morbidity,overall mortality,and severe adverse events were compared by intention-to-treat analysis.RESULTS:From November 1999 to November 2005,70 patients were treated.After preoperative TCF(Arm A),thirty-two(94%)resections were performed,85% of which were R0.Pathological response was complete in 4 patients(11.7%),and partial in 18(55%).No surgical mortality and 28.5%morbidity rate were observed,similar to those of immediate surgery arm(P= 0.86).Serious chemotherapy adverse events tended to be more frequent in arm B(23%vs 11%,P=0.07),with a single death per arm.CONCLUSION:Surgery following docetaxel-based chemotherapy was safe and with similar morbidity to immediate surgery in patients with locally-advanced resectable gastric carcinoma.Roberto Biffi Nicola Fazio Fabrizio Luca Antonio Chiappa Bruno Andreoni Maria Giulia Zampino Arnaud Roth Jan Christian Schuller Giancarla Fiori Franco Orsi Guido Bonomo Cristiano Crosta Olivier Huber 2010World Journal of Gastroenterology2010,16,7:43
10Diagnosis and management of bacterial infections in decompensated cirrhosis显示文摘Bacterial infections are one of the most frequent complications in cirrhosis and result in high mortality rates.Patients with cirrhosis have altered and impaired immunity,which favours bacterial translocation.Episodes of infections are more frequent in patients with decompensated cirrhosis than those with compensated liver disease.The most common and life-threatening infection in cirrhosis is spontaneous bacterial peritonitis followed by urinary tract infections,pneumonia,endocarditis and skin and soft-tissue infections.Patients with decompensated cirrhosis have increased risk of developing sepsis,multiple organ failure and death.Risk factors associated with the development of infections are severe liver failure,variceal bleeding,low ascitic protein level and prior episodes of spontaneous bacterial peritonitis (SBP).The prognosis of these patients is closely related to a prompt and accurate diagnosis.An appropriate treatment decreases the mortality rates.Preventive strategies are the mainstay of the management of these patients.Empirical antibiotics should be started immediately following the diagnosis of SBP and the first-line antibiotic treatment is third-generation cephalosporins.However,the efficacy of currently recommended empirical antibiotic therapy is very low in nosocomial infections including SBP,compared to community-acquired episodes.This may be associated with the emergence of infections caused by Enterococcus faecium and extended-spectrum β-lactamaseproducing Enterobacteriaceae,which are resistant to the first line antimicrobial agents used for treatment.The emergence of resistant bacteria,underlines the need to restrict the use of prophylactic antibiotics to patients with the greatest risk of infections.Nosocomial infections should be treated with wide spectrum antibiotics.Further studies of early diagnosis,prevention and treatment are needed to improve the outcomes in patients with decompensated cirrhosis.Maria Pleguezuelo Jose Manuel Benitez Juan Jurado Jose Luis Montero Manuel De la Mata 2013World Journal of Hepatology2013,5,1:44
11A community-derived classification for extant lycophytes and ferns显示文摘发展史长通知了蕨类植物分类。当我们推断进化的树的能力改善了,针对认出生来的组的分类变得逐渐地预兆、稳定。这里,我们为 lycophytes 和蕨纲植物提供一个现代、全面分类,在下面,利用一条基于社区的途径类水平。我们 monophyly 用作主要标准让 taxa,而且目的识别保存两个广泛地被接受的存在 taxa 和界限并且与我们蕨类植物发展史的理解一致。总共,这个分类对待一在 337 个类, 51 个家庭, 14 目,和二个班估计了 11  916 种类。这个分类没在 lycophyte 和蕨纲植物上作为最后的词被打算分类,而是当前的假设的概括陈述,源于最好的可得到的数据并且在问题由熟悉植物的那些大多数塑造了。我们希望它将在蕨类植物上为最近的文学的那些想要的参考用作一个资源发展史和分类,为指导未来调查的一个框架,和推进讲话的刺激。Eric Schuettpelz Harald Schneider Alan R. Smith Peter Hovenkamp Jefferson Prado Germinal Rouhan Alexandre Salino Michael Sundue Thafs Elias Almeida Barbara Parris Emily B. Sessa Ashley R. Field Andre Luis de Gasper Carl J. Rothfels Michael D. Windham Marcus Lehnert Benjamin Dauphin Atsushi Ebihara Samuli Lehtonen Pedro Bond Schwartsburd Jordan Metzgar Li-Bing Zhang Li-Yaung Kuo Patrick J. Brownsey Masahiro Kato Marcelo Daniel Arana Francine C. Assis Michael S. Barker David S. Barrington Ho-Ming Chang Yi-Han Chang Yi-Shan Chao Cheng-Wei Chen De-Kui Chen Wen-Liang Chiou Vinicius Antonio de Oliveira Dittrich Yi-Fan Duan Jean-Yves Dubuisson Donald R. Farrar Susan Fawcett Jose Maria Gabriel y Galan Luiz Armando de Araujo Goes-Neto Jason R. Grant Amanda L. Grusz Christopher Haufler Warren Hauk Hai He Sabine Hennequin Regina Yoshie Hirai Layne Huiet Michael Kessler Petra Korall Paulo H. Labiak Anders Larsson Blanca Leen Chun-Xiang Li Fay-Wei Li Melanie Link-Perez Hong-Mei Liu Ngan Thi Lu Esteban I. Meza-Torres Xin-Yuan Miao Robbin Moran Claudine Massi Mynssens Nathalie Nagalingum Benjamin Ollgaard Alison M. Paul Jovani B. de S. Pereira Leon R. Perrie Monica Ponce Tom A. Ranker Christian Schulz Wataru Shinohara Alexander Shmakov Erin M. Sigel Filipe Soares de Souza Lana da Silva Sylvestre Weston Testo Luz Amparo Triana-Moreno Chie Tsutsumi Hanna Tuomisto IvAn A. Valdespino Alejandra Vasco Raquel Stauffer Viveros Alan Weakley Ran Wei Stina Weststrand Paul G. Wolf George Yatskievych Xiao-Gang Xu Yue-Hong Yan Liang Zhang Xian-Chun Zhang Xin-Mao Zhou 2016Journal of Systematics and Evolution2016,54,6:44
12Managements of recurrent hepatocellular carcinoma after liver transplantation: A systematic review显示文摘AIM: To investigate the efficacy(survival) and safety of treatments for recurrent hepatocellular carcinoma(HCC) in liver transplantation(LT) patients.METHODS: Literature search was performed on available online databases without a time limit until January 2015. Clinical studies describing survival after HCC recurrence in LT patients were retrieved for a fulltext evaluation. A total of 61 studies were selected: 13 case reports, 41 retrospective case series, and 7 retrospective comparative studies.RESULTS: Based on all included studies, the mean HCC recurrence rate was 16% of all LTs for HCC. A total of 1021 LT patients experienced HCC recurrence. The median time from LT to HCC recurrence was 13 mo(range 2-132 mo). The majority of patients(67%) presented with HCC extra-hepatic recurrences, involving lung, bone, adrenal gland, peritoneal lymph nodes, and rarely the brain. Overall survival after HCC recurrence was 12.97 mo. Surgical resection of localized HCC recurrence and Sorafenib for controlling systemic spread of HCC recurrence were associated with the higher survival rates(42 and 18 mo, res-pectively). However, Sorafenib, especially when combined with m TOR, was frequently associated with severe side effects that required dose reduction or discontinuation CONCLUSION: Management of recurrent HCC in LT patients is challenging and associated with poor prognosis independently of the type of treatment.Nicola de'Angelis Filippo Landi Maria Clotilde Carra Daniel Azoulay 2015World Journal of Gastroenterology2015,21,39:42
13Hepatitis B:Epidemiology and prevention in developing countries显示文摘Hepatitis B virus(HBV)infection is a serious global public health problem.The infection may be transmitted through sexual intercourse,parenteral contact or from an infected mother to the baby at birth and,if contracted early in life,may lead to chronic liver disease,including cirrhosis and hepatocellular carcinoma.On the basis of the HBV carrier rate,the world can be divided in 3 regions of high,medium and low endemicity.The major concern is about high endemicity countries,where the most common route of infection remains vertical transmission from mother to child.Screening of all pregnant women and passive immunization with human hepatitis B immunoglobulin are not affordable for many developing countries.The infection rate can be reduced by modifying behavior,improving individual education,testing all blood donations,assuring asepsis in clinical practice and screening all pregnant women.However,availability of a safe and efficacious vaccine and adoption of appropriate immunization strategies are the most effective means to prevent HBV infection and its consequences.The unsolved problem for poorest countries,where the number of people currently infected is high,is the cost of the vaccine.A future challenge is to overcome the social and economic hurdles of maintaining and improving a prevention policy worldwide to reduce the global burden of the disease.Elisabetta Franco Barbara Bagnato Maria Giulia Marino Cristina Meleleo Laura Serino Laura Zaratti 2012World Journal of Hepatology2012,4,3:39
14Canopy Temperature Depression as a Potential Selection Criterion for Drought Resistance in Wheat显示文摘Field studies were conducted at Bushland, Texas, USA, in 2004 to examine usefulness of canopy temperature depression(CTD), the difference of air-canopy temperature, in screening wheat (Triticum aestivum L.) genotypes for yield underdryland and irrigated. Forty winter wheat genotypes were grown under irrigation and dryland. CTDs were recorded afterheading between 1 330 and 1 530 h on 6 clear days for dryland and 9 days for irrigation. Drought susceptible index (DSI)for each genotype was calculated using mean yield under dryland and irrigated conditions. Genotypes exhibited greatdifferences in CTD under each environment. The dryland CTDs averaged 1.33°C ranging from -0.67 to 2.57°C, and theaverage irrigation CTD were 4.59°C ranging from 3.21 to 5.62°C. A low yield reduction was observed under drylandconditions relative to irrigated conditions for high-CTD genotypes. CTD values were highly negatively correlated withDSI under dryland, and genotypes of CTDs = 1.3°C in dryland condition were identified as drought resistant. For 21genotypes classified as drought resistant by DSI, their CTDs were 1.68°C for dryland and 4.35°C for irrigation on average;for 19 genotypes classified as drought susceptible by DSI, average CTD was 0.94°C in dryland and 4.85°C in irrigation.The high-yield genotypes consistently had high CTD values, and the low-yield ones had low CTD values for allmeasurements in dryland. After heading, genotypes maintained consistent ranking for CTD. Regression results for CTDand yield suggested that the best time for taking CTD measurement was 3-4 weeks after heading in irrigation but any timebefore senescence in dryland. Crop water stress index (CWSI) calculated from CTD data was highly correlated with CWSIcalculated from yield, which suggesting traditional costly CWSI measurement may be improved by using portable infraredthermometers. Most importantly, grain yield was highly correlated with CTD under dryland (R2 = 0.79-0.86) and irrigation(R2 = 0.46-0.58) conditions. These results clearly indicated grain yield and water stress can be predicted by taking CTDvalues in field, which can be used by breeding programs as a potential selection criterion for grain yield and droughtresistance in wheat, but a second study year is needed to confirm further.FAN Ting-lu Maria Balta Jackie Rudd William A Payne 2005Agricultural Sciences in China2005,4,10:35
15阿斯匹林在男性和女性心血管事件一级预防中的应用——随机对照试验性别特异性汇总分析显示文摘背景:阿斯匹林可降低高危成人发生心血管疾病的危险。但是,女性人群是否与男性人群一样获益,仍不清楚。 目的:确定阿斯匹林在不同性别人群心血管疾病一级预防中的获益与危险。数据来源和研究选择:数据源于MEDLINE和Cochrane中心的对照试验数据库(1966年至2005年3月)、检出文章的参考文献以及重要科学会议的报告。入选合格的研究为:在无心血管疾病参试者中进行的前瞻性阿斯匹林治疗随机对照试验,研究报告了心肌梗死、卒中和心血管病死亡数据。共检出6项试验95456名个体。其中3项试验仅包括男性,1项试验仅包括女性,另外2项试验包括两种性别。 数据提取:审查、确定随机研究的患者数量、平均随访时间和终点事件(复合心血管事件[非致死性心肌梗死、非致死性卒中和心血管死亡]以及具体每种心血管事件和大出血事件的发生)。 数据综合:在51342例女性中,有1285例发生主要心血管事件:卒中625例,心肌梗死469例,心血管死亡364例。阿斯匹林显著减少心血管事件12%(优势比[oddsratio,OR],0.86;95%可信区间[CI],0.79-0.99;P=0.03),显著减少卒中事件17%(OR,0.83;95%CI,0.70-0.97;P=0.02),后者反映的是缺血性卒中的降低(OR,0.76;95%、CI,0.63-0.93;P=0.08);对心肌梗死和心血管死亡无显著影响。在44114例男性试验对象中,有2047例发生主要心血管事件:卒中597例,心肌梗死1023例,心血管死亡776例。阿斯匹林显著减少心血管事件14%(OR,0.86;95%CI,0.78-0.94;P=0.01),减少心肌梗死32%(OR,0.68;95%CI,0.54-0.86;P=0.001);对卒中和心血管疾病所致死亡无显著影响。阿斯匹林治疗增加了女性(OR,1.68;95%CI,1.13-2.52;P=0.01)和男性(OR,1.72;95%CI,1.35—2.20;P〈0.001)的出血危险。 结论:对于女性和男性,由于阿斯匹林减少了女性缺血性卒中以及男性心肌梗死事件的发生,故降低了他们发生复合心血管事件的危险。阿斯匹林显著增加出血危险,女性与男性出血危险相似。Jeffrey S. Berger Maria C. Roncaglioni Fausto Avanzini Ierta Pangrazzi Gianni Tognoni David L. Brown 崔艳丽(译) 赵秀丽(校) 2006美国医学会杂志(中文版)2006,25,5:40
16Bile acids:Chemistry,physiology,and pathophysiology显示文摘The family of bile acids includes a group of molecular species of acidic steroids with very peculiar physical-chemical and biological characteristics.They are synthesized by the liver from cholesterol through several complementary pathways that are controlled by mechanisms involving finetuning by the levels of certain bile acid species.Although their best-known role is their participation in the digestion and absorption of fat,they also play an important role in several other physiological processes.Thus,genetic abnormalities accounting for alterations in their synthesis,biotransformation and/or transport may result in severe alterations,even leading to lethal situations for which the sole therapeutic option may be liver transplantation.Moreover,the increased levels of bile acids reached during cholestatic liver diseases are known to induce oxidative stress and apoptosis,resulting in damage to the liver parenchyma and,eventually,extrahepatic tissues.When this occurs during pregnancy,the outcome of gestation may be challenged.In contrast,the physical-chemical and biological properties of these compounds have been used as the bases for the development of drugs and as pharmaceutical tools for the delivery of active agents.Maria J Monte Jose JG Marin Alvaro Antelo Jose Vazquez-Tato 2009World Journal of Gastroenterology2009,15,7:36
17Renin-angiotensin system in the pathogenesis of liver fibrosis显示文摘Hepatic fibrosis is considered a common response to many chronic hepatic injuries.It is a multifunctional process that involves several cell types,cytokines,chemokines and growth factors leading to a disruption of homeostatic mechanisms that maintain the liver ecosystem.In spite of many studies regarding the development of fibrosis,the understanding of the pathogenesis remains obscure.The hepatic tissue remodeling process is highly complex,resulting from the balance between collagen degradation and synthesis.Among the many mediators that take part in this process,the components of the Renin angiotensin system(RAS) have progressively assumed an important role.Angiotensin(Ang)□acts as a profibrotic mediator and Ang-(1-7),the newly recognized RAS component,appears to exert a counter-regulatory role in liver tissue.We briefly review the liver fibrosis process and current aspects of the RAS.This review also aims to discuss some experimental evidence regarding the participation of RAS mediators in the pathogenesis of liver fibrosis,focusing on the putative role of the ACE2-Ang-(1-7)-Mas receptor axis.Regina Maria Pereira Robson Augusto Souza dos Santos Filipi Leles da Costa Dias Mauro Martins Teixeira Ana Cristina Simoes e Silva 2009World Journal of Gastroenterology2009,15,21:37
18Current knowledge on esophageal atresia显示文摘Esophageal atresia (EA) with or without tracheoesophageal fistula (TEF) is the most common congenital anomaly of the esophagus. The improvement of survival observed over the previous two decades is multifactorial and largely attributable to advances in neonatal intensive care, neonatal anesthesia, ventilatory and nutritional support, antibiotics, early surgical intervention, surgical materials and techniques. Indeed, mortality is currently limited to those cases with coexisting severe life-threatening anomalies. The diagnosis of EA is most commonly made during the first 24 h of life but may occur either antenatally or may be delayed. The primary surgical correction for EA and TEF is the best option in the absence of severe malformations. There is no ideal replacement for the esophagus and the optimal surgical treatment for patients with long-gap EA is still contro-versial. The primary complications during the postoperative period are leak and stenosis of the anastomosis, gastro-esophageal reflux, esophageal dysmotility, fistula recurrence, respiratory disorders and deformities of the thoracic wall. Data regarding long-term outcomes and follow-ups are limited for patients following EA/TEF repair. The determination of the risk factors for the complicated evolution following EA/TEF repair may positively impact long-term prognoses. Much remains to be studied regarding this condition. This manuscript provides a literature review of the current knowledge regarding EA.Paulo Fernando Martins Pinheiro Ana Cristina Simoes e Silva Regina Maria Pereira 2012World Journal of Gastroenterology2012,18,28:35
19The Calcineurin B-Like Calcium Sensors CBL1 and CBL9 Together with Their Interacting Protein Kinase ClPK26 Regulate the Arabidopsis NADPH Oxidase RBOHF显示文摘象反应的氧种类(ROS ) 和 Ca2+ 一样的第二个送信人的刺激特定的累积对许多在植物发信号和规定过程中央。然而,管理发信号的 Ca2+ 和 ROS 的相互的相互关系的机制开始仅仅正在出现。呼吸爆炸 oxidase 相当或相同的事物(RBOH ) 的 NADPH oxidases 家庭是当和他们的交往的 kinases (CIPK ) 的 Calcineurin 象 B 一样(CBL )Ca2+ 传感器蛋白质被显示了在表明过程的许多 Ca2+- 工作时,贡献 ROS 的产生的批评部件。在这研究,我们识别在两个都表明系统之间的直接功能的相互作用。我们报导交往 CBL 蛋白质 kinase CIPK26 明确地在酵母与 RBOHF 的 N 终端领域交往二混血儿的分析并且与在植物房间的全身的 RBOHF 蛋白质。另外,在有 CIPK26 的 CBL1 或 CBL9 的 vitro 和合作表示的 CIPK26 phosphorylates RBOHF 强烈在 HEK293T 房间由 RBOHF 提高 ROS 生产。一起,这些调查结果识别在调停 CBLCIPK 的 Ca2+ 在植物发信号并且 ROS 发信号之间的直接互联并且为 NADPH oxidase RBOHF 的 synergistic 激活提供证据由对它由 CBL1/9CIPK26 建筑群的 EF 传递和导致 Ca2+ 的 phosphorylation 直接 Ca2+ 有约束力。Maria Magdalena Drerup Kathrin Schlückinga Kenji Hashimoto Prabha Manishankar Leonie Steinhorst Kazuyuki Kuchitsu Jōrg Kudl 2013Molecular Plant2013,6,2:35
20页岩微观孔隙演化及分形特征研究显示文摘以美国印第安纳州伊利诺伊盆地的New Albany页岩(热成熟度RO值范围为0.35%~1.41%)为研究对象,分别采用氮气吸附法和二氧化碳吸附法表征页岩纳米孔隙结构特点,研究了页岩微观孔隙随热成熟度、总有机碳含量(TOC)及无机矿物组分的演化特征,并探索了页岩孔隙分形特征的热演化规律及其与孔隙结构参数的相关关系。结果表明,随着热成熟度的升高,页岩孔容呈现非单调演化趋势,推测其与有机质的初次和二次裂解密切相关。Frenkel-Halsey-Hill(FHH)方法和热力学模型计算获得的页岩样品的孔隙分形维数在2.47~2.61之间,表明了页岩孔隙具有明显的分形特征。研究还发现,生油窗内成熟页岩样品的孔隙分形维数与其孔容显著正相关,而与孔径显著负相关,暗示孔隙分形维数与页岩气体吸附能力密切相关。更高的分形维数使得孔隙结构趋于复杂,并有利于气体吸附存储。因此,页岩孔隙分形维数可作为定量表征孔隙结构非均质性、评价页岩气体吸附存储能力的重要参数之一。陈燕燕 邹才能 Maria Mastalerz 朱如凯 白斌 杨智 2015天然气地球科学2015,26,9:38
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