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1Role of the Wnt/β-catenin pathway in gastric cancer: An indepth literature review显示文摘Gastric cancer remains one of the most common cancers worldwide and one of the leading cause for cancerrelated deaths. Gastric adenocarcinoma is a multifactorial disease that is genetically, cytologically and architecturally more heterogeneous than other gastrointestinal carcinomas.The aberrant activation of the Wnt/β-catenin signaling pathway is involved in the development and progression of a significant proportion of gastric cancer cases. This review focuses on the participation of the Wnt/b-catenin pathway in gastric cancer by offering an analysis of the relevant literature published in this field. Indeed, it is discussed the role of key factors in Wnt/β-catenin signaling and their downstream effectors regulating processes involved in tumor initiation, tumor growth, metastasis and resistance to therapy. Available data indicate that constitutive Wnt signalling resulting from Helicobacter pylori infection and inactivation of Wnt inhibitors(mainly by inactivating mutations and promoter hypermethylation) play an important role in gastric cancer. Moreover, a number of recent studies confirmed CTNNB1 and APC as driver genes in gastric cancer. The identification of specific membrane, intracellular, and extracellular components of the Wnt pathway has revealed potential targets for gastric cancer therapy. High-throughput 'omics' approaches will help in the search for Wnt pathway antagonist in the near future.Miguel Angel Chiurillo 2015World Journal of Experimental Medicine2015,5,2:58
2华北燕山带:构造、埃达克质岩浆活动与地壳演化(英文)显示文摘埃达克质火成岩在中国东部,包括燕山带是很常见的,一般认为它们是下地壳不均匀的镁铁质岩石及/或富集的上地幔岩石在高压(≥1.5 GPa)下部分熔融的结果。在燕山带内埃达克岩浆的形成有一个很长的时间(约190~80 Ma),然而岩浆活动的峰期却与约170~130 Ma间有基底岩石卷入的陆壳收缩期相一致。尽管埃达克质岩浆活动的历史很长,但那种把岩浆活动与岩石圈的拆沉效应相联系的模式似乎是不适当的。在该带内,埃达克质与非埃达克质岩浆活动有一部分是同时的,而且在地理分布上也是相间的,这说明了在下地壳和上地幔岩石的部分熔融中成分是相当不均匀的。侏罗纪及白垩纪熔融作用的热源应当是与古太平洋板块俯冲相关的中生代板底垫托的玄武岩浆。除了局部例外,在燕山带,埃达克质岩浆活动的终结和碱性岩浆活动的开始约在130~120 Ma,在此时期收缩作用使东亚大达200万km^2以上的地区发生了NW—SE向的区域性伸展作用。强烈的地壳伸展仅局限于华北克拉通北缘分布的少数几个变质核杂岩中。陆壳的伸展减薄合理地解释了130~120 Ma间发生高压埃达克质熔融条件的终结,尽管还有局部年轻的埃达克火山活动(约120~80Ma)可以在伸展规模有限而厚的地壳依然存在的地区继续出现。燕山区早白垩世的碱性侵入体中的锆石不存在前寒武纪?Gregory A. DAVIS Department of Earth Sciences, University6 of Southern California, Los Angeles,California 90089-0740 USA Department of Geology , China University of Geosciences , Beijing 100083, China 2003地学前缘2003,10,4:46
3Colorectal cancer population screening programs worldwide in 2016: An update显示文摘Colorectal cancer(CRC)is the third most commonly diagnosed cancer in the world.The incidence and mortality show wide geographical variations.Screening is recommended to reduce both incidence and mortality.However,there are significant differences among studies in implementation strategies and detection.This review aimed to present the results and strategies of different screening programs worldwide.We reviewed the literature on national and international screening programs published in Pub Med,on web pages,and in clinical guidelines.CRC Screening programs are currently underway in most European countries,Canada,specific regions in North and South America,Asia,and Oceania.The most extensive screening strategies were based on fecal occult blood testing,and more recently,the fecal immunochemical test(FIT).Participation in screening has varied greatly among different programs.The Netherlands showed the highest participation rate(68.2%)and some areas of Canada showed the lowest(16%).Participation rates were highest among women and in programs that used the FIT test.Men exhibited the greatest number of positive results.The FIT test has been the most widely used screening program worldwide.The advent of this test has increased participation rates and the detection of positive results.Mercedes Navarro Andrea Nicolas Angel Ferrandez Angel Lanas 2017World Journal of Gastroenterology2017,23,20:43
4Early J_2 basalts in SE China:Incipience of large-scale late Mesozoic magmatism显示文摘Magmatism in SE China was dormant during 204―180 Ma, but was reactivated in 180― 170 Ma (early J2), and then became more and more intensive towards the end of early Cretaceous. The small-scale early J2 magmatism is the incipience to long-term and large-scale magmatism in this region. A near east-west (EW) trend volcanic belt was distributed across south Hunan, south Jiangxi and southwest Fujian was formed during early J2 time. Along this belt from the inland toward the coast, the lithology of basalts changes from alkali into tholeiite, and the amount of erupted volcanic rocks and the proportions of rhyolites coexisting with the basalts increase. On the basis of geochemical char- acteristics of these basalts, we infer that the melting degree of source rocks and the extent of frac- tional crystallization and crustal contamination all increased whereas the depth of mantle source de- creased from the inland to the coast, which led to the variations of geological characteristics of the volcanic belt. In early J2, the western spreading Pacific plate began to subduct underneath SE China continental block, reactivating near EW trend deep fault that was originally formed during the Indos- inian event. The stress of the western spreading Pacific plate and the extent of asthenosphere up- welling increased from the inland to the coast, which is consistent with the generation and evolution of early J2 basalts.XIE Xin1, XU Xisheng1, ZOU Haibo2, JIANG Shaoyong1, ZHANG Ming3 & QIU Jiansheng1 1. State Key Laboratory of Mineral Deposit Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China 2. Department of Earth and Space Sciences, University of California at Los Angeles, Los Angeles, CA90095-1567, USA. 3. GEMOC ARC National Key Centre, Department of Earth and Planetary Sciences, Macquarie University, Sydney, N.S.W. 2109, Australia 2006Science China Earth Sciences2006,49,8:30
5碱激发水泥的类型与特点(英文)显示文摘基于所含胶凝组份的成分,可以将碱激发水泥分成5种类型:1)碱激发矿渣水泥;2)碱激发波特兰复合水泥;3)碱激发火山灰水泥;4)碱激发石灰-火山灰/矿渣水泥;5)碱激发铝酸钙复合水泥,每种类型碱激发水泥包含几种胶凝体系。综述了这5种碱激发水泥的成分和特征。史才军 何富强 A.FERNANDEZ-JIMIENEZ V.Pavel KRIVENKO Angel PALOMO 2012硅酸盐学报2012,40,1:29
6Cytochrome P450 2E1 genetic polymorphism and gastric cancer in Changle,Fujian Province显示文摘AIM: Genetic polymorphism in enzymes of carcinogen metabolism has been found to have the influence on the susceptibility to cancer. Cytochrome P450 2E1 ( CYP2 E1) is considered to play an important role in the metabolic activation of procarcinogens such as N-nitroscoamines and Iow molecular weight organic compounds. The purpose of this study is to determine whether CYP450 2Elpolymorphisms are associated with risk s of gastric cancer.METHODS: We conducted a population based case-control study in Changle county, Fujian Province, a high-risk region of gastric cancer in China. Ninety-one incident gastric cancer patients and ninety-four healthy controls were included in our study. Datas including dsmographic characteristcs, diet intake, and alcohol and tobacco consumption of indivduals in our study were completed by a standardized questionnaire. PCR-RFLP revealed three genotypes: heterozygote (C1/C2) and two homozygotes (C1/C1 and C2/C2) in CYP2E1.RESULTS: The frequency of variant genotypes (C1/C2 and C2/C2) in gastric cancer cases and controls was 36.3% and 24.5%, respectively. The rare homozygous C2/C2 genotype was found in 6 indivduals in gastric cancer group(6.6%),whereas there was only one in the control group (1.1%).However, there was no statistically significan difference between the two groups (two-tailed Fisher′s exact test, P =0.066). Indivduals in gastric cancer group were more likely to carry genotype C1/C2 (odds ratio, OR = 1.50) and C2/C2(OR = 7.34) than indivduals in control group (X2 = 4.597, for trend P=0.032). The frequencies of genofypes with the C2allele ( C1/C2 and C2/C2 genotypes) were compared with those of genotypes without C2 allele ( C1/C1 genotype )among indivduals in gastric cancer group and control group according to the pattern of gastric cancer risk factors. The results show that indivduals who exposed to these gastric cancer risk factors and carry the C2 allele seemed to have a higher risk of developing gastric cancer.CONCLUSION: Polymorphism of CYP2E1 gene may have some effct in the development of gastric cancer in Changle county, Fujian Province.Lin Cai~1 Shun-Zhang Yu~2 Zuo-Feng Zhang~3 1 Department of Epidemiology,Fujian Medical University,Fuzhou 350004,Fujian Province,China2 Department of Epidemiology,Shanghai Medical University,Shanghai 200032,China3 Department of Epidemiology,UCLA School of Public Health,Los Angeles California,USA 2001World Journal of Gastroenterology2001,7,6:25
7Glutathione S-transferases M1,T1 genotypes and the risk of gastric cancer:A case-control study显示文摘AIM Glutathione S-transferases (GSTs are involved in the detoxification of many potential carcinogens and appear to play a critical role in the protection from the effects of carcinogens. The contribution of glutathione Stransferases M1 and T1 genotypes to susceptibility to the risk of gastric cancer and their interaction with cigarette smoking are still unclear. The aim of this study was to determine whether there was any relationship between genetic polymorphisms of GSTM1 and GSTT1 and gastric cancer.METHODS A population based case - control study was carried out in a high-risk area, Changle County, Fujian Province, China. The epidemiological data were collected by a standard questionnaire and blood samples were obtained from 95 incidence gastric cancer cases and 94 healthy controls. A polymerase chain reaction method was used to detect the presence or absence of the GSTM1 and GSTT1 genes in genomic DNA. Logistic regression model was employed in the data analysis.RESULTS An increase in risk for gastric cancer was found among carriers of GSTM1 null genotype. The adjusted odds ratio (OR) was 2.63 [95% Confidence Interval (95% CI) 1.17-5.88], after controlling for age,gender, cigarette smoking, alcohol drinking, and fish sauce intake. The frequency of GSTT1 null genotype in cancer cases (43.16%) was not significantly different from that in controls (50.00%). However, the risk for gastric cancer in those with GSTM1 null and GSTT1 nonnull genotype was significantly higher than in those with both GSTM1 and GSTT1 non-null genotype (OR = 2.77,95% Cl 1.15- 6.77). Compared with those subjects who never smoked and had normal GSTM1 genotype, Ors were 1.60 (95% CI: 0.62- 4.19) for never smokers with GSTM1 null type, 2.33 (95% CI 0.88- 6.28) for smokers with normal GSTM1, and 8.06 (95% CI 2.83- 23.67) for smokers with GSTM1 null type.CONCLUSIONS GSTM1 gene polymorphisms may be associated with genetic susceptibility of stomach cancer and may modulate tobacco-related carcinogenesis of gastric cancer.Lin Cai Shun-Zhang Yu Zuo-Feng Zhang Department of Epidemiology.Fujian Medical University,Fuzhou 350004,Fujian Province,ChinaDepartment of Epidemiology,Shanghai Medical University,Shanghai 200032,China Department of Epidemiology,UCLA School of Public Health,Los Angeles California,USA 2001World Journal of Gastroenterology2001,7,4:22
8Risk factors and classifications of hilar cholangiocarcinoma显示文摘Cholangiocarcinoma is the second most common primary malignant tumor of the liver.Perihilar cholangiocarcinoma or Klatskin tumor represents more than 50% of all biliary tract cholangiocarcinomas.A wide range of risk factors have been identified among patients with Perihilar cholangiocarcinoma including advanced age,male gender,primary sclerosing cholangitis,choledochal cysts,cholelithiasis,cholecystitis,parasitic infection(Opisthorchis viverrini and Clonorchis sinensis),inflammatory bowel disease,alcoholic cirrhosis,nonalcoholic cirrhosis,chronic pancreatitis and metabolic syndrome.Various classifications have been used to describe the pathologic and radiologic appearance of cholangiocarcinoma.The three systems most commonly used to evaluate Perihilar cholangiocarcinoma are the Bismuth-Corlette(BC) system,the Memorial Sloan-Kettering Cancer Center and the TNM classification.The BC classification provides preoperative assessment of local spread.The Memorial Sloan-Kettering cancer center proposes a staging system according to three factors related to local tumor extent:the location and extent of bile duct involvement,the presence or absence of portal venous invasion,and the presence or absence of hepatic lobar atrophy.The TNM classification,besides the usual descriptors,tumor,node and metastases,provides additional information concerning the possibility for the residual tumor(R) and the histological grade(G).Recently,in 2011,a new consensus classification for the Perihilar cholangiocarcinoma had been published.The consensus was organised by the European Hepato-PancreatoBiliary Association which identified the need for a new staging system for this type of tumors.The classification includes information concerning biliary or vascular(portal or arterial) involvement,lymph node status or metastases,but also other essential aspects related to the surgical risk,such as remnant hepatic volume or the possibility of underlying disease.Miguel Angel Suarez-Munoz Jose Luis Fernandez-Aguilar Belinda Sanchez-Perez Jose Antonio Perez-Daga Beatriz Garcia-Albiach Ysabel Pulido-Roa Naiara Marin-Camero Julio Santoyo-Santoyo 2013World Journal of Gastrointestinal Oncology2013,5,7:23
9Chemotherapy for gastric cancer显示文摘变形胃的癌症仍然是非药品疾病。没有生活妥协的质量,辩解的化疗被表明了延长幸存。单个代理人的许多和联合被证实了在变形疾病的治疗活跃。客观反应率为综合化学疗法为单个代理人的治疗和 30-60% 从 10-30%。阶段 II 和 III 研究的结果在这篇论文以及新药的潜在的功效被考察。为有局部性的疾病的病人,助手和 neoadjuvant 化疗和放射治疗的角色被讨论。辅助化疗上的大多数研究没能表明一个幸存优点,因此,它没在大多数中心被看作标准疗法。辅助免疫化疗在朝鲜和日本根本上被开发了。有 OK-432 的阶段 III 试用的元分析建议那免疫化疗可以改进病人的幸存与 curatively resected 胃的癌症。基于美国的结果团体之间 0116 学习,手术后的 chemoradiation 与 resected 在病人作为标准照顾被接受了在北美洲的胃的癌症。然而,结果被病人们经历了的事实有点惊讶不到推荐 D1 淋巴节点解剖和复发的模式建议没有任何效果,积极效果在微变形疾病上源于本地放射疗法。Neoadjuvant 化疗或 chemoradiation 治疗仍然保持试验性,但是几阶段 II 学习正在显示出有希望的结果。阶段 III 试用被需要。Javier Sastre Jose Angel García-Saenz Eduardo Díaz-Rubio 2006World Journal of Gastroenterology2006,12,2:22
10里德尔剪切的组合型式与走滑盆地组合型式的相似性显示文摘走滑断裂体系中经常发育里德尔剪切的断裂组合,世界上不同构造背景下与走滑断裂相关的盆地(走滑盆地)也很多见。因此里德尔剪切是地质构造研究中的重要方面。我们从三个方面对里德尔剪切的节理构造组合及盆地组合进行了对比:(1)里德尔剪切构造组合与比例尺无关。里德尔剪切带的(转换)拉张区与沉积盆地的分布区是相似的;(2)断裂的最大位移区与断陷盆地的沉积中心是一致的,断陷盆地长轴平行于断裂走向;(3)物理模拟试验及数学模拟试验都证实了走滑盆地的演化。基于上述认识,我们通过厘米级岩芯标本的观察,结合已发表的盆地资料,提出了6类与里德尔剪切有关的构造组合及断陷盆地组合。(1)雁列状构造及盆地组合:许多盆地发育雁列状构造。同时,与里德尔剪切相关的雁列状盆地的宽度与主剪切断裂的剪切位移呈正相关。(2)帚状或马尾状构造及盆地组合:二者在形态上相似,所以归为一类。成因上,马尾状构造及盆地主要发育在走滑断裂的拉张端部,而帚状构造或盆地反映走滑断裂的旋扭作用,可以在走滑断裂影响区域的任何部位。(3)串珠状构造及盆地组合:该类型的盆地主要是指释压盆地的组合,拉分盆地也可以形成串珠状盆地。(4)S状或Z状构造或盆地组合:左行走滑形成Z状构造或盆地,而右行走划形成S状构造或盆地。(5)多字型构造及盆地组合:是拉分盆地的典型组合,可以过渡到串珠状盆地。(6)复杂的网状构造及盆地组合:通常是由于分布型简单剪切的作用结果。以上盆地组合类型包括大型盆地内次级单元(次级盆地或更次级盆地)的组合,但不包括多成因、多期活动的构造及盆地。许顺山 彭华 Angel F.NIETO-SAMANIEGO 陈书平 吴习东 2017地质论评2017,63,2:23
11Hepatitis B virus genotype has no impact on hepatitis B e antigen seroconversion after lamivudine treatment显示文摘AIM: To investigate the association of hepatitis B virus (HBV) genotype and HBeAg seroconversion after nucleotide analogue treatment.METHODS: Chronic hepatitis B patients receiving lamivudine followed up for at least 6 months post-treatment were studied. Consecutive treatment-naive patients who were prospectively followed up in the clinic for at least 18 months were studied as controls. HBeAg seroconversion was defined as loss of HBeAg, appearance of anti-HBe and normalization of alanine aminotransferase for at least 6 months.RESULTS: Thirty-five patients on lamivudine and 96 control patients followed up for 39 (18-49) months were studied.Lamivudine was given for 12 (10-18) months, and patients were followed up for 15 (6-34) months after drug cessation.Genotype B and C HBV were found in 43 and 88 patients and HBeAg seroconversion occurred in 12 (28 %) and 16(18 %) patients, respectively (P=0.30). There was no difference in HBeAg seroconversion between patients infected by genotype B and C HBV in the control (35 % vs 21%, P=0.25) and lamivudine-treated (14 % vs 10 %,P=1.00) groups.CONCLUSION: HBeAg seroconversion after treatment by lamivudine was not influenced by the HBV genotype.Henry Lik-Yuen Chan May-Ling Wong Alex Yui Hui Angel Mei-Ling Chim Ada Mei-Ling Tse Lawrence Cheung-Tsui Hung Francis Ka-Leung Chan Joseph Jao-Yiu Sung 2003World Journal of Gastroenterology2003,9,12:21
12TRAF-mediated regulation of immune and inflammatory responses显示文摘The tumor necrosis factor (TNF) receptor-associated factor (TRAF) family consists of six mammalian members,and is shown to participate in signal transduction of a large number of receptor families including TNF receptor family (TNFR) and Toll-like receptors-interleukin-1 receptors (TLR-IL-1R) family.Upon receptor activation,TRAFs are directly or indirectly recruited to the intracellular domains of these receptors.They subsequently engage other signaling proteins to activate inhibitor of κB kinase (IKK) complex,TRAF family member-associated NF-κB activator (TANK)-binding kinase 1 (TBK1) and inducible I κB kinase (IKK-i) (also known as IKKε),ultimately leading to activation of transcription factors such as NF-κB and interferon-regulatory factor (IRF) to induce immune and inflammatory responses.WANG YaYa1,ZHANG Peng2,LIU YingFang2 & CHENG GenHong1 1 Department of Microbiology,Immunology & Molecular Genetics,University of California Los Angeles,609 Charles E.Young Drive East,Los Angeles,California 90095,USA 2 National Laboratory of Biomacromolecules,Institute of Biophysics,Chinese Academy of Sciences,Beijing 100101,China 2010Science China(Life Sciences)2010,53,2:19
13Role of gastrin-peptides in Barrett's and colorectal carcinogenesis显示文摘Gastrin is the main hormone responsible for the stimulation of gastric acid secretion;in addition,gastrin and its derivatives exert proliferative and antiapoptotic effects on several cell types.Gastrin synthesis and secretion are increased in certain situations,for example,when proton pump inhibitors are used.The impact of sustained hypergastrinemia is currently being investigated.In vitro experiments and animal models have shown that prolonged hypergastrinemia may be related with higher cancer rates;although,this relationship is less clear in human beings.Higher gastrin levels have been shown to cause hyperplasia of several cell types;yet,the risk for developing cancer seems to be the same in normo-and hypergastrinemic patients.Some tumors also produce their own gastrin,which can act in an autocrine manner promoting tumor growth.Certain cancers are extremely dependent on gastrin to proliferate.Initial research focused only on the effects of amidated gastrins,but there has been an interest in intermediates of gastrin in the last few decades.These intermediates aren't biologically inactive;in fact,they may exert greater effects on proliferation and apoptosis than the completely processed forms.In certain gastrin overproduction states,they are the most abundant gastrin peptides secreted.The purpose of this review is to examine the gastrin biosynthesis process and to summarize the results from different studies evaluating the production,levels,and effects of the main forms of gastrin in different overexpression states and their possible relationship with Barrett's and colorectal carcinogenesis.Eduardo Chueca Angel Lanas Elena Piazuelo 2012World Journal of Gastroenterology2012,18,45:19
14On linking climate to Chinese dynastic change: Spatial and temporal variations of monsoonal rain显示文摘The causal correlation or linkage between the East Asian Monsoon (EAM) intensity and rise/fall of Chinese dynasties recently proposed by high-resolution paleoclimate reconstructions is examined in detail. Aside from many exceptions to the correlation, both instrumental and historical climate records show strong spatial variations of rainfall on annual-to-decadal scales over eastern China. The relationship between rainfall and EAM intensity also exhibits regional disparity. These observations suggest: (1) Tak-ing paleo-proxy records from a single locality in eastern China to imply changes in drought/wetness as to affect the cultural and political history of China is fraught with uncertainty. (2) On annual-to-decadal scales, the thesis that δ18O in speleothems can be used as a proxy for the EAM strength lacks empirical underpinnings.ZHANG DeEr1, LI Hong-Chun2,3, KU Teh-Lung2,4 & LU LongHua5 1 National Climate Center, Beijing 100081, China 2 Department of Earth Sciences & Research Center of Ocean Environment and Technology, Cheng-Kung University, Tainan 70101, Taiwan, China 3 School of Geographical Sciences, Southwest University of China, Chongqing 400715, China 4 Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, USA 5 Chinese Academy of Meteorological Sciences, Beijing 100081, China 2010Chinese Science Bulletin2010,55,1:19
15在 laparoscopic 肝外科的快轨道的节目: 理论或事实?显示文摘 AIM:To analyze our results after the introduction of a fast-track(FT) program after laparoscopic liver surgery in our Hepatobiliarypancreatic Unit.METHODS:All patients(43) undergoing laparoscopic liver surgery between March 2004 and March 2010 were included and divided into two consecutive groups:Control group(CG) from March 2004 until December 2006 with traditional perioperative cares(17 patients) and fast-track group(FTG) from January 2007 until March 2010 with FT program cares(26 patients).Primary endpoint was the influence of the program on the postoperative stay,the amount of re-admissions,morbidity and mortality.Secondarily we considered duration of surgery,use of drains,conversion to open surgery,intensive cares needs and transfusion.RESULTS:Both groups were homogeneous in age and sex.No differences in technique,time of surgery or conversion to open surgery were found,but more malignant diseases were operated in the FTG,and then transfusions were higher in FTG.Readmissions and morbidity were similar in both groups,without mortality.Postoperative stay was similar,with a median of 3 for CG vs 2.5 for FTG.However,the 80.8% of patients from FTG left the hospital within the first 3 d after surgery(58.8% for CG).CONCLUSION:The introduction of a FT program after laparoscopic liver surgery improves the recovery of patients without increasing complications or re-admissions,which leads to a reduction of the stay and costs.Belinda Sánchez-Pérez José Manuel Aranda-Narváez Miguel Angel Suárez-Muoz Moises elAdel-delFresno José Luis Fernández-Aguilar Jose Antonio Pérez-Daga Ysabel Pulido-Roa Julio Santoyo-Santoyo 2012World Journal of Gastrointestinal Surgery2012,4,11:18
16Classification and management of bile duct injuries显示文摘To review the classification and general guidelines for treatment of bile duct injury patients and their long term results. In a 20-year period, 510 complex circumferential injuries have been referred to our team for repair at the Instituto Nacional de Ciencias Médicasy Nutrición 'Salvador Zubirán' hospital in Mexico City and 198 elsewhere (private practice). The records at the third level Academic University Hospital were analyzed and divided into three periods of time: GⅠ-1990-99 (33 cases), G Ⅱ2000-2004 (139 cases) and GⅢ2004-2008 (140 cases). All patients were treated with a Roux en Y hepatojejunostomy. A decrease in using transanastomotic stents was observed (78% vs 2%, P = 0.0001). Partial segment Ⅳ and Ⅴ resection was more frequently carried out (45% vs 75%, P = 0.2) (to obtain a high bilioenteric anastomosis). Operative mortality (3% vs 0.7%, P = 0.09), postoperative cholangitis (54% vs 13%, P = 0.0001), anastomosis strictures (30% vs 5%, P = 0.0001), short and long term complications and need for reoperation (surgical or radiological) (45% vs 11%, P = 0.0001) were significantly less in the last period. The authors concluded that transition to a high volume center has improved long term results for bile duct injury repair. Even interested and tertiary care centers have a learning curve.Miguel Angel Mercado Ismael Domínguez 2011World Journal of Gastrointestinal Surgery2011,3,4:17
17卒中相关性肺炎的诊断卒中肺炎共识小组的推荐意见显示文摘背景和目的下呼吸道感染常并发于卒中并对转归造成不利影响。对于并发于卒中的下呼吸道感染性疾病,目前尚无公认的专业术语或诊断金标准,这导致临床诊疗和研究受到影响。本共识旨在提出急性卒中并发下呼吸道感染的标准化术语和可操作性诊断标准。方法对多个文献数据库进行系统检索,经过证据回顾和2轮讨论,最后于2014年9月在英国曼彻斯特召开共识会议,经75%以上共识小组成员达成一致意见后形成共识。结果达成的共识如下:(1)推荐使用卒中相关性肺炎(stroke-associated pneumonia, SAP )作为卒中发病后7 d内发生的下呼吸道感染性疾病的专业术语。(2)提议对 SAP 使用经过改良的美国疾病控制预防中心(Centers for Disease Control and Prevention, CDC)诊断标准:①很可能的 SAP:符合 CDC 诊断标准,但复查或动态监测胸部 X 片仍缺乏典型改变;②确诊的 SAP:符合 CDC 诊断标准,且胸部 X 片有典型改变。(3)关于白细胞计数或 C反应蛋白在 SAP 诊断中的作用证据有限。(4)其他生物学标记物(如降钙素原)的证据不足。结论提议根据 CDC 诊断标准对 SAP 的术语和诊断制定可操作性的共识标准,需要在卒中患者中进行前瞻性研究来确定其信度、效度以及对医生行为(包括抗生素选择)和临床转归的影响。Craig J. Smith Amit K Kishore Andy Vail Angel Chamorro Javier Garau Stephen J. Hopkins Mario Di Napoli Lalit Kalra Peter Langhorne Joan Montaner Christine Roffe Anthony G. Rudd Pippa J. TyrreU Diederik van de Peek Mark Woodhead Andreas Meisel 范琳琳 宿英英 2016国际脑血管病杂志2016,24,2:17
18Preventative effects of a probiotic, Lactobacillus salivarius ssp. salivarius, in the TNBS model of rat colitis显示文摘AIM: To investigate the intestinal anti-inflammatory effect and mechanism of a probiotic Lactobacillus sakuvarius ssp.salivariusCECT5713 in the TNBS model of rat colitis.METHODS: Female Wistar rats (180-200 g) were used in this study. A group of rats were administered orally the probiotic L. salivarius ssp. salivarius (5×108 CFU suspended in 0.5 mL of skimmed milk) daily for 3 wk. Two additional groups were used for reference, a non-colitic and a control colitic without probiotic treatment, which received orally the vehicle used to administer the probiotic. Two weeks after starting the experiment, the rats were rendered colitic by intracolonic administration of 10 mg of TNBS dissolved in 0.25 mL of 500 mL/L ethanol. One week after colitis induction, all animals were killed and colonic damage was evaluated both histologically and biochemically. The biochemical studies performed in colonic homogenates include determination of myeloperoxidase (MPO) activity,glutathione (GSH) content, leukotriene B4 (LTB4) and tumor necrosis factor α (TNF-α) levels, as well as inducible nitric oxide synthase (iNOS) expression. In addition, the luminal contents obtained from colonic samples were used for microbiological studies, in order to determine Lactobacilli and Bifidobacteria counts.RESULTS: Treatment of colitic rats with L. salivarius ssp.salivarius resulted in amelioration of the inflammatory response in colitic rats, when compared with the corresponding control group without probiotic treatment. This antiinflammatory effect was evidenced macroscopically by a significant reduction in the extent of colonic necrosis and/or inflammation induced by the administration of TNBS/ethanol (2.3+0.4 cm vs3.4+0.3 cm in control group,P<0.01) and histologically by improvement of the colonic architecture associated with a reduction in the neutrophil infiltrate in comparison with non-treated colitic rats. The latter was confirmed biochemically by a significant reduction of colonic MPO activity (105.3+26.0 U/g vs180.6±21.9 U/g, P<0.05), a marker of neutrophil infiltration. The beneficial effect was associated with an increase of the colonic GSH content (1 252±42 nmol/g vs 1 087+51 nmol/g, P<0.05),which is depleted in colitic rats, as a consequence of the oxidative stress induced by the inflammatory process. In addition, the treatment of colitic rats with L. salivarius resulted in a significant reduction of colonic TNF-α levels (509.4±68.2 pg/g vs782.9±60.1 pglg, P<0.01) and in a lower colonic iNOS expression, when compared to TNBS control animals without probiotic administration. Finally,treated colitic rats showed higher counts of Lactobacilli species in colonic contents than control colitic rats, whereas no differences were observed in Bifidobacteria counts.CONCLUSION: Administration of the probiotic L. salivarius ssp. salivarius CECT5713 facilitates the recovery of the inflamed tissue in the TNBS model of rat colitis, an effect associated with amelioration of the production of some of the mediators involved in the inflammatory response in the intestine, such as cytokines, including TNF-α and NO. This beneficial effect could be ascribed to its effect on the altered immune response that occurs in this inflammatory condition.Laura Peran Desiree Camuesco Monica Comalada Ana Nieto Angel Concha Maria Paz Diaz-Ropero Monica Olivares Jordi Xaus Antonio Zarzuelo Julio Galvez 2005World Journal of Gastroenterology2005,11,33:17
19Cell Death Mechanisms Induced by Cytotoxic Lymphocytes显示文摘One of the functions of the immune system is to recognize and destroy abnormal or infected cells to maintain homeostasis. This is accomplished by cytotoxic lymphocytes. Cytotoxicity is a highly organized multifactor process. Here,we reviewed the apoptosis pathways induced by the two main cytotoxic lymphocyte subsets,natural killer(NK) cells and CD8+ T cells. In base to recent experimental evidence,we reviewed NK receptors involved in recognition of target-cell,as well as lytic molecules such as perforin,granzymes-A and-B,and granulysin. In addition,we reviewed the Fas-FasL intercellular linkage mediated pathway,and briefly the cross-linking of tumor necrosis factor(TNF) and TNF receptor pathway. We discussed three models of possible molecular interaction between lytic molecules from effector cytotoxic cells and target-cell membrane to induction of apoptosis.Chávez-Galán L Arenas-Del Angel MC Zenteno E Chávez R Lascurain R 2009Cellular & Molecular Immunology2009,6,1:17
20Tenofovir vs lamivudine plus adefovir in chronic hepatitis B:TENOSIMP-B study显示文摘AIM To demonstrate the non-inferiority(15% non-inferiority limit) of monotherapy with tenofovir disoproxil fumarate(TDF) vs the combination of lamivudine(LAM) plus adefovir dipivoxil(ADV) in the maintenance of virologic response in patients with chronic hepatitis B(CHB) and prior failure with LAM.METHODS This study was a Phase IV prospective, randomized, open, controlled study with 2 parallel groups(TDF and LAM+ADV) of adult patients with hepatitis B e antigen(HBe Ag)-negative CHB, prior failure with LAM, on treatment with LAM+ADV for at least 6 mo, without prior resistance to ADV and with an undetectable viral load at the start of the study, in 14 Spanish hospitals. The follow-up time for each patient was 48 wk after randomization, with quarterly visits in which the viral load, biochemical and serological parameters, adverse effects, adherence to treatment and consumption of hospital resources were analysed.RESULTS Forty-six patients were evaluated [median age: 55.4 years(30.2-75.2); 84.8% male], including 22 patients with TDF and 24 with LAM+ADV. During study development, hepatitis B virus DNA(HBV-DNA) remained undetectable, all patients remained HBe Ag negative, and hepatitis B surface antigen(HBs Ag) positive. Alanine aminotransferase(ALT) values at the end of the study were similar in the 2 groups(25.1± 7.65, TDF vs 24.22 ± 8.38, LAM+ADV, P = 0.646). No significant changes were observed in creatinine or serum phosphorus values in either group. No significant differences between the 2 groups were noted in the identification of adverse effects(AEs)(53.8%, TDF vs 37.5%, LAM+ADV, P = 0.170), and none of the AEs which occurred were serious. Treatment adherence was 95.5% and 83.3% in the TDF and the LAM+ADV groups, respectively(P = 0.488). The costs associated with hospital resource consumption were significantly lower with the TDF treatment than the LAM+ADV treatment(€4943 ± 1059 vs €5811 ± 1538, respectively, P < 0.001).CONCLUSION TDF monotherapy proved to be safe and not inferior to the LAM+ADV combination therapy in maintaining virologic response in patients with CHB and previous LAM failure. In addition, the use of TDF generated a significant savings in hospital costs.Manuel Rodríguez Juan Manuel Pascasio Enrique Fraga Javier Fuentes Martín Prieto Gloria Sánchez-Antolín Jose Luis Calleja Esther Molina María Luisa García-Buey María Angeles Blanco Javier Salmerón María Lucía Bonet Jose Antonio Pons Jose Manuel González Miguel Angel Casado Francisco Jorquera 2017World Journal of Gastroenterology2017,23,41:16
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