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1Portal 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
2Laparoscopic natural orifice specimen extraction-colectomy: A systematic review显示文摘Over the last 20 years, laparoscopic colorectal surgery has shown equal efficacy for benign and malignant colorectal diseases when compared to open surgery. However, a laparoscopic approach reduces postoperative morbidity and shortens hospital stay. In the quest to optimize outcomes after laparoscopic colorectal surgery, reduction of access trauma could be a way to improve recovery. To date, one method to reduce access trauma is natural orifice specimen extraction(NOSE). NOSE aims to reduce access trauma in laparoscopic colorectal surgery. The specimen is delivered via a natural orifice and the anastomosis is created intracorporeally. Different methods are used to extract the specimen and to create a bowel anastomosis. Currently, specimens are delivered transcolonically, transrectally, transanally, or transvaginally. Each of these NOSEprocedures raises specific issues with regard to operative technique and application. The presumed benefits of NOSE-procedures are less pain, lower analgesia requirements, faster recovery, shorter hospital stay, better cosmetic results, and lower incisional hernia rates. Avoidance of extraction site laparotomy is the most important characteristic of NOSE. Concerns associated with the NOSE-technique include bacterial contamination of the peritoneal cavity, inflammatory response, and postoperative outcomes, including postoperative pain and the functional and oncologic outcomes. These issues need to be studied in prospective randomized controlled trials. The aim of this systematic review is to describe the role of NOSE in minimally invasive colorectal surgery.Albert M Wolthuis Anthony de Buck van Overstraeten André D'Hoore 2014World Journal of Gastroenterology2014,20,36:65
3Fecal microbiota transplantation as novel therapy in gastroenterology:A systematic review显示文摘AIM:To study the clinical efficacy and safety of Fecal microbiota transplantation(FMT).We systematically reviewed FMT used as clinical therapy.METHODS:We searched MEDLINE,EMBASE,the Cochrane Library and Conference proceedings from inception to July,2013.Treatment effect of FMT was calculated as the percentage of patients who achieved clinical improvement per patient category,on an intention-to-treat basis.RESULTS:We included 45 studies;34 on Clostridium difficile-infection(CDI),7 on inflammatory bowel disease,1 on metabolic syndrome,1 on constipation,1 on pouchitis and 1 on irritable bowel syndrome(IBS).In CDI 90% resolution of diarrhea in 33 case series(n = 867) was reported,and 94% resolution of diarrhea after repeated FMT in a randomized controlled trial(RCT)(n = 16).In ulcerative colitis(UC) remission rates of 0% to 68% were found(n = 106).In Crohn's disease(CD)(n = 6),no benefit was observed.In IBS,70% improvement of symptoms was found(n = 13).100% Reversal of symptoms was observed in constipation(n = 3).In pouchitis,none of the patients(n = 8) achieved remission.One RCT showed significant improvement of insulin sensitivity in metabolic syndrome(n = 10).Serious adverse events were rare.CONCLUSION:FMT is highly effective in CDI,and holds promise in UC.As for CD,chronic constipation,pouchitis and IBS data are too limited to draw conclusions.FMT increases insulin sensitivity in metabolic syndrome.Noortje G Rossen John K Mac Donald Elisabeth M de Vries Geert R D'Haens Willem M de Vos Erwin G Zoetendal Cyriel Y Ponsioen 2015World Journal of Gastroenterology2015,21,17:41
4Predictive factors for anastomotic leakage after laparoscopic colorectal surgery显示文摘Every colorectal surgeon during his or her career is faced with anastomotic leakage(AL); one of the most dreaded complications following any type of gastrointestinal anastomosis due to increased risk of morbidity, mortality, overall impact on functional and oncologic outcome and drainage on hospital resources. In order to understand and give an overview of the AL risk factors in laparoscopic colorectal surgery, we carried out a careful review of the existing literature on this topic and found several different definitions of AL which leads us to believe that the lack of a consensual, standard definition can partly explain the considerable variations in reported rates of AL in clinical studies. Colorectal leak rates have been found to vary depending on the anatomic location of the anastomosis with reported incidence rates ranging from 0 to 20%, while the laparoscopic approach to colorectal resections has not yet been associated with a significant reduction in AL incidence. As well, numerous risk factors, though identified, lack unanimous recognition amongst researchers. For example, the majority of papers describe the risk factors for left-sided anastomosis, the principal risk being male sex and lower anastomosis, while little data exists defining AL risk factors in a right colectomy. Also, gut microbioma is gaining an emerging role as potential risk factor for leakage.Antonio Sciuto Giovanni Merola Giovanni D De Palma Maurizio Sodo Felice Pirozzi Umberto M Bracale Umberto Bracale 2018World Journal of Gastroenterology2018,24,21:48
5帕博利珠单抗单用或与放疗联用治疗转移性非小细胞肺癌:两个随机试验的汇总分析显示文摘背景放疗可以提高整个机体对免疫治疗的应答。在Ⅱ期PEMBRO-RT研究和Ⅰ/Ⅱ期MDACC研究中,患有转移性非小细胞肺癌(NSCLC)的患者被随机分配入组,接受免疫治疗(帕博利珠单抗)+放疗联合疗法,或免疫治疗单一疗法。当上述2个研究单独分析时,联合疗法组显示出潜在获益。由于每个研究的样本量较小,缓解率和结局并未显示出统计学意义,然而却有显著的临床获益。因此,本研究进行汇总分析,来判断放疗是否会改善转移性NSCLC患者的免疫治疗应答。方法PEMBRO-RT和MDACC研究纳入标准:患者年龄≥18岁,患有转移性NSCLC,且有≥1处未经放疗照射的病灶,以便进行射野外应答监测。PEMBRO-RT研究纳入曾接受过化疗患者,MDACC研究纳入曾接受过治疗或新诊断患者。2个研究中的患者均未接受过免疫治疗。在PEMBRO-RT研究中患者被等比例随机分配入组,并根据吸烟状态进行分层(分为<10年组和≥10年组)。MDACC研究的患者根据放疗计划可行性被等比例随机分配入2个受试组。由于联合治疗组的干预本质,每个研究中的放疗均不适用盲法。在2个研究中,不论是否进行放疗,均静脉滴入帕博利珠单抗(每3周200 mg)。在PEMBRO-RT研究中,在放疗(24 Gy 3次分割照射)结束后1周给予第1剂帕博利珠单抗。在MDACC研究中,在第1次放疗(50 Gy 4次分割照射或45 Gy 15次分割照射)同时给予帕博利珠单抗。仅检测未经照射病灶的应答。本研究的终点为最佳射野外(远隔)应答率(ARR)、最佳射野外疾病控制率(ACR)、12周时ARR、12周时ACR、无进展生存期(PFS)和总生存期(OS)。2个研究的意向治疗(ITT)人群均纳入分析。PEMBRO-RT研究(NCT02492568)和MDACC研究(NCT02444741)均在ClinicalTrials.gov上注册。发现纳入148例患者,76例接受帕博利珠单抗治疗,72例接受帕博利珠单抗+放疗治疗。所有患者随访时间中位数为33个月[四分位距(IQR):32.4~33.6]。148例患者中124例(84%)组织学特征为非鳞癌,111例(75%)患者曾经接受过化疗。组间没有基线特征差异,包括PD-L1表达状态和转移灶体积。最常见的照射部位为肺转移灶(39%,28/72)、胸腔内淋巴结(21%,15/72)和非原发灶(17%,12/72)。帕博利珠单抗组和联合治疗组的最佳ARR分别为19.7%(15/76)和41.7%(30/72),OR=2.96,95%CI:1.42~6.20,P=0.0039;最佳ACR分别为43.4%(33/76)和65.3%(47/72),OR=2.51,95%CI:1.28~4.91,P=0.0071;PFS中位数分别为4.4(IQR:2.9~5.9)和9.0个月(IQR:6.8~11.2),HR=0.67,95%CI:0.45~0.99,P=0.045;OS中位数分别为8.7(IQR:6.4~11.0)和19.2个月(IQR:14.6~23.8),OR=0.67,95%CI:0.54~0.84,P=0.0004。在汇总分析中没有发现新的安全问题。解读帕博利珠单抗免疫疗法+放疗显著提高转移性NSCLC患者的应答和改善治疗结局。这些结果需要在三期临床试验中进行验证。陈大卫(翻译) 于金明(校对) Willemijn S M E Theelen Vivek Verma Brian P Hobbs Heike M U Peulen Joachim G J V Aerts Idris Bahce Anna Larissa N Niemeijer Joe Y Chang Patricia M de Groot Quynh-Nhu Nguyen Nathan I Comeaux George R Simon Ferdinandos Skoulidis Steven H Lin Kewen He Roshal Patel John Heymach Paul Baas James W Welsh 2021中华肿瘤防治杂志2021,28,24:49
6MicroRNA-451 regulates LKB1/AMPK signaling and allows adaptation to metabolic stress in glioma cells显示文摘Godlewski J Nowicki MO Bronisz A Nuovo G Palatini J De Lay M Van Brocklyn J Ostrowskl MC Chlocca EA Lawler SE. 2010中国神经肿瘤杂志2010,8,1:37
7最新AD研究用诊断标准:IWG-2标准显示文摘在过去的8年中,国际工作组织(IWG)和美国国立老化研究院-阿尔茨海默协会(NIA-AA)建立了阿尔茨海默病(AD)诊断标准,它能更好地定义AD的临床表型,整合了生物标记物于诊断流程中,并覆盖了疾病的全程。本意见书充分地权衡了IWG标准的优缺点,建议改进诊断框架。依据这些改进,AD的诊断变得简单,只要有恰当的AD临床表型(典型或不典型)和与AD的病理相一致的病理生理学生物标志物出现。我们认为疾病的下游的定位性生物标志,如容积性磁共振成像(MRI)和氟脱氧葡萄糖-正电子发射型计算机断层成像(FDG-PET)等,适合更好地测量和监测疾病过程。本文还详述了非典型性AD、混合性AD和AD临床前期的特异诊断标准。陈刚 曹雯炜 俞羚 糜建华 Dubois B Feldman HH Jacova C Hampel H Molinuevo JL Blennow K DeK osky ST Gauthier S Selkoe D Bateman R Cappa S Crutch S Engelborghs S Frisoni GB Fox NC Galasko D Habert MO Jicha GA Nordberg A Pasquier F Rabinovici G Robert P Rowe C Salloway S Sarazin M Epelbaum S de Souza LC Vellas B Visser PJ Schneider L Stern Y Scheltens P Cummings JL 2014神经病学与神经康复学杂志2014,11,3:31
8Helicobacter pylori in dental plaque and stomach of patients from Northern Brazil显示文摘AIM: To establish whether virulence factor genes vacA and cagA are present in Helicobacter pylori (H. pylori) retrieved from gastric mucosa and dental plaque in pa-tients with dyspepsia. METHODS: Cumulative dental plaque specimens and gastric biopsies were submitted to histological exami-nation, rapid urease test and polymerase chain reac-tion (PCR) assays to detect the presence of cagA and vacA polymorphisms.RESULTS: Detection of H. pylori from dental plaque and gastric biopsy samples was greater by PCR com-pared to histological examination and the rapid ure-ase test. DNA from H. pylori was detected in 96% of gastric mucosa samples and in 72% of dental plaque samples. Sixty-three (89%) of 71 dental plaque sam-ples that were H. pylori-positive also exhibited identical vacA and cagA genotypes in gastric mucosa. The most common genotype was vacAs1bm1 and cagA positive, either in dental plaque or gastric mucosa. These viru-lent H. pylori isolates were involved in the severity of clinical outcome.CONCLUSION: These pathogenic strains were found simultaneously in dental plaque and gastric mucosa, which suggests that gastric infection is correlated with the presence of H. pylori in the mouth.Mnica Baraúna Assumpo Luisa Caricio Martins Hivana Patricia Melo Barbosa Katarine Antonia dos Santos Barile Sintia Silva de Almeida Paulo Pimentel Assumpo Tereza Cristina de Oliveira Corvelo 2010World Journal of Gastroenterology2010,16,24:29
9珠江、流溪河大型底栖动物分布和氮磷因子的相关分析显示文摘采用Anova、多重比较并t检验的方法来比较氮、磷因子和大型底栖动物在 3个河段 (流溪河、珠江西航道及前航道 )的显著性差异分布及它们之间的相关。结果显示 ,主要污染物均为NH+4 -N ,均高出国家地表水水质V级标准。前航道NO-3 -N和NO-2 -N含量最低 ,硝化作用和河流自净作用大大地降低。PO3-4 -P也是前航道、西航道的污染因子。NH+4 -N和PO3-4 -P不是生物分布的限制因子 ,底栖动物计数和河流底层的NO-3-N ,NO-2 -N呈显著负相关关系。必须进行氮和磷的污染控制及治理 ,才可能提高河流底栖动物多样性 ,提高生态环境质量。刘玉 VERMAAT J E RUYTER E D de KRUIJF H A M de 2003中山大学学报(自然科学版)2003,42,1:22
10Sharing Clinical Trial Data: A Proposal from the International Committee of Medical Journal Editors显示文摘The International Committee of Medical Journal Editors (ICMJE) believes that there is an ethical obligation to responsibly share data generated by interventional clinical trials because participants have put themselves at risk.In a growing consensus,many funders around the world-foundations,government agencies,and industry-now mandate data sharing.Here,we outline ICMJE's proposed requirements to help meet this obligation.We encourage feedback on the proposed requirements.Anyone can provide feedback at www.icmje.org by April 18,2016.Darren B Taichman Joyce Backus Christopher Baethge Howard Bauchner Peter W de Leeuw Jeffrey M Drazen John Fletcher Frank Frizelle Irish Groves Abraham Haileamlak Astrid James Christine Laine Larry Peiperl Anja Pinborg Peush Sahni Si-Nan Wu 2016Chinese Medical Journal2016,,2:20
11Evolution of transanal total mesorectal excision for rectal cancer:From top to bottom显示文摘The gold standard for curative treatment of locally advanced rectal cancer involves radical resection with a total mesorectal excision(TME). TME is the most effective treatment strategy to reduce local recurrence and improve survival outcomes regardless of the surgical platform used. However, there are associated morbidities, functional consequences, and quality of life(QoL) issues associated with TME; these risks must be considered during the modern-day multidisciplinary treatment for rectal cancer. This has led to the development of new surgical techniques to improve patient, oncologic, and QoL outcomes. In this work, we review the evolution of TME to the transanal total mesorectal excision(TaTME) through more traditional minimally invasive platforms. The review the development, safety and feasibility, proposed benefits and risks of the procedure, implementation and education models, and future direction for research and implementation of the TaTME in colorectal surgery. While satisfactory short-term results have been reported, the procedure is in its infancy, and long term outcomes and definitive results from controlled trials are pending.As evidence for safety and feasibility accumulates,structured training programs to standardize teaching,training, and safe expansion will aid the safe spread of the TaTME.Sameh Hany Emile F Borja de Lacy Deborah Susan Keller Beatriz Martin-Perez Sadir Alrawi Antonio M Lacy Manish Chand 2018World Journal of Gastrointestinal Surgery2018,10,3:18
12Diagnosis of pancreatic tumors by endoscopic ultrasound-guided fine-needle aspiration显示文摘AIM: To evaluate the diagnostic accuracy of endoscopic ultrasound-guided fi ne-needle aspiration (EUS-FNA) for pancreatic solid tumors larger or smaller than 3 cm, and cystic lesions. METHODS: From January/1997 to December/2006, 611 patients with pancreatic tumors were subjected to EUS-FNA. The fi nal diagnosis was obtained either by surgery (356 cases) or after a mean clinical follow-up of 11.8 mo in the remaining patients. RESULTS: There were 405 solid tumors, 189 cystic lesions and 17 mixed. Pancreatic specimens for cytological assessment were successfully obtained by EUS-FNA in 595 (97.4/) cases. There were 352 (57.6/) malignancies and 259 (42.4/) benign tumors. Among the malignancies, pancreatic adenocarcinomas accounted for 67/ of the lesions. Overall, the sensitivity, specifi city, positive and negative predictive values, and accuracy of EUS-FNA were, respectively, 78.4/, 99.2/, 99.3/, 77.2/ and 87.2/. Specif ically for solid tumors, the same parameters for neoplasms larger and smaller than 3 cm were, respectively, 78.8/ vs 82.4/, 100/ vs 98.4/, 100/ vs 99/, 54.8/ vs 74.1/ and 83.1/ vs 87.8/. For cystic lesions, the values were, respectively, 72.2/, 99.3/, 97.5/, 91/ and 92.2/. CONCLUSION: EUS-FNA can be used to sample pancreatic tumors in most patients. Even though the negative predictive value is inadequate for large solid tumors, the results are rather good for small solid tumors, especially concerning the sensitivity, negative predictive value and diagnostic accuracy. Among all pancreatic lesions, EUS-FNA for cystic lesions canreveal the best negative predictive value and diagnostic accuracy, both higher than 90/.José Celso Ardengh César Vivian Lopes Luiz Felipe Pereira de Lima Juliano Rodrigues de Oliveira Filadélfi o Venco Giulio Cesare Santo José Luiz Pimenta Módena 2007World Journal of Gastroenterology2007,13,22:17
13H pylori (CagA) and Epstein-Barr virus infection in gastric carcinomas:Correlation with p53 mutation and c-Myc,Bcl-2 and Bax expression显示文摘AIM: To investigate the interrelationship between H pylori and Epstein-Barr virus (EBV) infection in the gastric carcinogenesis having in focus the p53 mutation and the c-Myc, Bcl-2 and Bax expression. METHODS: seventy-one gastric carcinoma tissues were assessed by polymerase chain reaction (PCR) for H pylori and in situ hybridization for EBV. c-Myc, Bcl-2 and Bax expression were detected by immunohistochemistry and single-stranded conformational polymorphism (SSCP) for p53 mutation. RESULTS: The positivity rates for H pylori and EBV were 94.4% and 8.45%, respectively. The majority of the cases displayed only the H pylori presence. All EBV positive cases were also H pylori positive. None infectious agent was observed in 5.55% of the cases. The intestinal type tumor was more frequent in the co-infected and non-infected groups. The female predominated in the non-infected group showing statistical significance (70.4% vs 29.6%, P=0.039). The Bcl-2 was only detected in the group exclusively infected by H pylori. However, c-Myc and Bax were detected in the three groups but with a low frequency in the co-infected group. Mutation of p53 was present in all groups, with the highest frequencies in the H pylori positive groups. CONCLUSION: The frequency of H pylori infection in gastric carcinomas was high. The presented data indicated that gastric carcinogenesis has different pathways depending of the presence of the two investigated infectious agents, suggesting a possible involvement of H pylori with apoptotic process. The low expression of c-Myc and Bax in the EBV-positive groups suggests that EBV may inhibit the expression of these proteins. Nevertheless, p53 mutation shows to be a relevant alteration, independent of both infectious agents.Valeska Portela Lima Marcos Antonio Pereira de Lima Angela Rosa André Márcia Valéria Pitombeira Ferreira Marcos Aurélio Pessoa Barros Sílvia Helena Barem Rabenhorst 2008World Journal of Gastroenterology2008,14,6:17
14Interleukin-1 and TNF-α polymorphisms and Helicobacter pylori in a Brazilian Amazon population显示文摘AIM:To study the association between Interleukin-1(IL-1)and tumor necrosis factor(TNF)-αpolymorphisms,infection by Helicobacter pylori(H pylori)and the development of gastrointestinal diseases.METHODS:Genomic DNA was extracted from the peripheral blood of 177 patients with various gastrointestinal diseases and from 100 healthy volunteers.The polymorphisms in IL-1βand TNF-αgenes were analyzed using the polymerase chain reactionrestriction fragment length polymorphism method(PCRRFLP)and those from IL-1RN with PCR.The presence of infection due to H pylori and the presence of the CagA toxin were detected by serology.The histopathological parameters in the gastric biopsies of the patients were according to the Sydney classification.RESULTS:A comparison of the frequencies of the different polymorphisms studied among the patients and the control group demonstrated that the allele IL1RN*2 was more frequent among patients with gastric ulcers and adenocarcinoma.Carriers of the allele ILRN*2 and those with reactive serology for anti-CagA IgG had a greater risk of developing peptic ulcer and gastric adenocarcinoma,as well as a higher degree of inflammation and neutrophilic activity in the gastric mucosa.CONCLUSION:Our results indicate a positive association between IL-1RN gene polymorphism and infection by positive H pylori CagA strains and the development of gastric ulcers and adenocarcinoma.Hivana Patricia Melo Barbosa Luisa Caricio Martins Sidney Emanuel Batista dos Santos Samia Demachki Mnica Baraúna Assumpo Charliana Damasceno Arago Tereza Cristina de Oliveira Corvelo 2009World Journal of Gastroenterology2009,15,12:17
15ISO_BMWP底栖动物监测法在中国河流有机污染评价中的修正及应用显示文摘河流有机污染是我国目前特别严重的环境污染问题之一。可以采用化学或生物监测的方法进行评价。首次采用大型底栖动物BMWP(BiologicalMonitoringWorkingParty)系统方法,对广州珠江前航道、西航道和流溪河下游段共3个河段进行有机污染生物监测评价。结果显示:底栖动物在3河段间分布确有显著性差异,根据修正的BMWP分数可以判断流溪河水质相对较好,水质级别相应于中国地表水环境质量标准Ⅳ~Ⅴ级,西航道和前航道水质级别均为Ⅴ级。通过测试这一方法能成功地应用在珠江及流溪河,且修正后的ISO_BMWP法可以较好地匹配于我国地表水5级评价系统,因此,初步认为修正后的ISO_BMWP系统可以成为一个和化学监测互补的好方法,从而应用于中国河流的生物监测评价。刘玉 VERMAAT J E RUYTER E D de KRUIJF H A M de 2004中山大学学报(自然科学版)2004,43,4:15
16Subclinical abnormal glucose tolerance is a predictor of death in liver cirrhosis显示文摘AIM:To determine if subclinical abnormal glucose tolerance(SAGT)has influence on survival of non-diabetic patients with liver cirrhosis.METHODS:In total,100 patients with compensatedliver cirrhosis and normal fasting plasma glucose were included.Fasting plasma insulin(FPI)levels were measured,and oral glucose tolerance test(OGTT)was performed.According to OGTT results two groups of patients were formed:those with normal glucose tolerance(NGT)and those with SAGT.Patients were followed every three months.The mean follow-up was932 d(range of 180-1925).Survival was analyzed by the Kaplan-Meyer method,and predictive factors of death were analyzed using the Cox proportional hazard regression model.RESULTS:Of the included patients,30 showed NGT and70 SAGT.Groups were significantly different only in age,INR,FPI and HOMA2-IR.Patients with SAGT showed lower 5-year cumulated survival than NGT patients(31.7%vs 71.6%,P=0.02).Differences in survival were significant only after 3 years of follow-up.SAGT,Child-Pugh B,and high Child-Pugh and Model for EndStage Liver Disease(MELD)scores were independent predictors of death.The causes of death in 90.3%of cases were due to complications related to liver disease.CONCLUSION:SAGT was associated with lower survival.SAGT,Child-Pugh B,and high Child-Pugh and MELD scores were independent negative predictors of survival.Diego García-Compeán Joel Omar Jáquez-Quintana Fernando Javier Lavalle-González José Alberto González-González Linda Elsa Mu?oz-Espinosa Jesús Zacarías Villarreal-PérezEndocrinology Service and Department of Internal Medicine University Hospital 'Dr. José E. González' and Medical School Universidad Autónoma de Nuevo León Monterrey 64320 México Héctor J Maldonado-Garza 2014World Journal of Gastroenterology2014,20,22:12
17Role of mi RNAs and their potential to be useful as diagnostic and prognostic biomarkers in gastric cancer显示文摘Alterations in epigenetic control of gene expression play an important role in many diseases, including gastric cancer. Many studies have identified a large number of upregulated oncogenic mi RNAs and downregulated tumour-suppressor mi RNAs in this type of cancer. In this review, we provide an overview of the role of mi RNAs, pointing to their potential to be useful as diagnostic and/or prognostic biomarkers in gastric cancer. Moreover, we discuss the influence of polymorphisms and epigenetic modifications on mi RNA activity.Kelly Cristina da Silva Oliveira Taíssa Maíra Thomaz Araújo Camila Inagaki Albuquerque Gabriela Alcantara Barata Carolina Oliveira Gigek Mariana Ferreira Leal Fernanda Wisnieski Fernando Augusto Rodrigues Mello Junior André Salim Khayat Paulo Pimentel de Assumpcao Rommel Mário Rodriguez Burbano Marília Cardoso Smith Danielle Queiroz Calcagno 2016World Journal of Gastroenterology2016,22,35:11
1825-羟维生素D和甲状旁腺激素与高血压的相关性显示文摘有研究证实,维生素D缺乏和甲状旁腺激素(PTH)过高与高血压的发生密切相关。维生素D缺乏不仅可以影响肾素血管紧张素系统及PTH水平,而且可以直接参与血管炎性反应,影响高血压的发生发展。PTH可以通过促进血管炎性反应及血管钙化等参与高血压的进展。目前还没有前瞻性研究同时评估维生素D和PTH水平与高血压发病的关系。该研究分析多民族动脉粥样硬化研究的前瞻性数据,发现低水平25羟维生素D[25(OH)D]和高水平PTH与高血压发病相关,特别是在肥胖人群中。但在校正混杂因素后,25(OH)D水平与高血压发病的相关性无统计学意义,而PTH水平与高血压发病仍然相关。鉴于维生素D缺乏和PTH过量在人群中是普遍现象,该研究对于更好地了解高血压发病机制,在人群中开展高血压预防工作有重要意义。van Ballegooijen AJ Kestenbaum B Sachs MC de Boer IH Siscovick DS Hoofnagle AN Ix JH Visser M Brouwer IA 练桂丽 叶鹏 2014中华高血压杂志2014,22,6:10
19Biliary tract schwannoma:A rare cause of obstructive jaundice in a young patient显示文摘Schwannoma is a tumor derived from Schwann cells which usually arises in the upper extremities, trunk, head and neck, retroperitoneum, mediastinum, pelvis, and peritoneum. However, it can arise in the gastro-intestinal tract, including biliary tract. We present a 24-year-old male patient with obstructive jaundice, whose investigation with computed tomography abdomen showed focal wall thickening in the common hepatic duct, difficult to differentiate with hilar adenocarcinoma. He was diagnosed intraoperatively schwannoma of common bile duct and treated with local resection. The patient recovered well without signs of recurrence of the lesion after 12 mo. We also reviewed the common bile duct schwannoma related in the literature and evaluated the difficulty in pre and intraoperative differential diagnosis with adenocarcinoma hilar. Resection is the treatment of choice for such cases and the tumordid not recur in any of the resected cases.Gilton Marques Fonseca André Luis Montagnini Manoel de Souza Rocha Rosely Antunes Patzina Mário Vinícius Angelete Alvarez Bernardes Ivan Cecconello José Jukemura 2012World Journal of Gastroenterology2012,18,37:10
20Use of butyrate or glutamine in enema solution reduces inflammation and fibrosis in experimental diversion colitis显示文摘AIM:To investigate whether butyrate or glutamine enemas could diminish inflammation in experimental diversion colitis.METHODS:Wistar specific pathogen-free rats were submitted to a Hartmann's end colostomy and treated with enemas containing glutamine,butyrate,or saline.Enemas were administered twice a week in the excluded segment of the colon from 4 to 12 wk after the surgical procedure.Follow-up colonoscopy was performed every 4 wk for 12 wk.The effect of treatment was evaluated using video-endoscopic and histologic scores and measuring interleukin-1β,tumor necrosis factor-alpha,and transforming growth factor beta production in organ cultures by enzyme linked immunosorbent assay.RESULTS:Colonoscopies of the diverted segment showed mucosa with hyperemia,increased number of vessels,bleeding and mucus discharge.Treatment with either glutamine or butyrate induced significant reductions in both colonoscopic(P < 0.02) and histological scores(P < 0.01) and restored the densities of collagen fibers in tissue(P = 0.015;P = 0.001),the number of goblet cells(P = 0.021;P = 0.029),and the rate of apoptosis within the epithelium(P = 0.043;P = 0.011) to normal values.The high levels of cytokines in colon explants from rats with diversion colitis significantly decreased to normal values after treatment with butyrate or glutamine.CONCLUSION:The improvement of experimental diversion colitis following glutamine or butyrate enemas highlights the importance of specific luminal nutrients in the homeostasis of the colonic mucosa and supports their utilization for the treatment of human diversion colitis.Rodrigo Goulart Pacheco Christiano Costa Esposito Lucas CM Müller Morgana TL Castelo-Branco Leonardo Pereira Quintella Vera Lucia A Chagas Heitor Siffert P de Souza Alberto Schanaider 2012World Journal of Gastroenterology2012,18,32:9
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