|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Promoter hypermethylation of CDH1, FHIT, MTAP and PLAGL1 in gastric adenocarcinoma in individuals from Northern Brazil显示文摘AIM: To evaluate the methylation status of CDH1, FHIT, MTAP and PLAGL1 promoters and the association of these findings with clinico-pathological characteristics. METHODS: Methylation-specific PCR (MSP) assay was performed in 13 nonneoplastic gastric adenocarcinoma, 30 intestinal-type gastric adenocarcinoma and 35 diffuse- type gastric adenocarcinoma samples from individuals in Northern Brazil. Statistical analyses were performed using the chi-square or Fisher’s exact test to assess associations between methylation status and clinico- pathological characteristics. RESULTS: Hypermethylation frequencies of CDH1, FHIT, MTAP and PLAGL1 promoter were 98.7%, 53.9%, 23.1% and 29.5%, respectively. Hypermethylation of three or four genes revealed a significant association with diffuse-type gastric cancer compared with nonneoplastic cancer. A higher hypermethylation frequency wassignificantly associated with H pylori infection in gastric cancers, especially with diffuse-type. Cancer samples without lymph node metastasis showed a higher FHIT hypermethylation frequency. MTAP hypermethylation was associated with H pylori in gastric cancer samples, as well as with diffuse-type compared with intestinal-type. In diffuse-type, MTAP hypermethylation was associated with female gender. CONCLUSION: Our findings show differential gene methylation in tumoral tissue, which allows us to conclude that hypermethylation is associated with gastric carcinogenesis. MTAP promoter hypermethylation can be characterized as a marker of diffuse-type gastric cancer, especially in women and may help in diagnosis, prognosis and therapies. The H pylori infectious agent was present in 44.9% of the samples. This infection may be correlated with the carcinogenic process through the gene promoter hypermethylation, especially the MTAP promoter in diffuse-type. A higher H pylori infection in diffuse-type may be due to greater genetic predisposition. | Mariana Ferreira Leal Eleonidas Moura Lima Patrícia Natália Oliveira Silva Paulo Pimentel Assumpo Danielle Queiroz Calcagno Spencer Luiz Marques Payo Rommel Rodríguez Burbano Marília de Arruda Cardoso Smith | 2007 | World Journal of Gastroenterology2007，13，18： | 24 |
| 2 | Fatty liver disease in severe obese patients:Diagnostic value of abdominal ultrasound显示文摘AIM:To evaluate the sensitivity and specificity of abdominal ultrasound (US) for the diagnosis of hepatic steatosis in severe obese subjects and its relation to histological grade of steatosis. METHODS: A consecutive series of obese patients, who underwent bariatric surgery from October 2004 to May 2005, was selected. Ultrasonography was performed in all patients as part of routine preoperative time and an intraoperative wedge biopsy was obtained at the beginning of the bariatric surgery. The US and histological findings of steatosis were compared, considering histology as the gold standard. RESULTS: The study included 105 patients. The mean age was 37.2 ± 10.6 years and 75.2% were female. The histological prevalence of steatosis was 89.5%. The sensitivity and specificity of US in the diagnosis of hepatic steatosis were, respectively, 64.9% (95% CI: 54.9-74.3) and 90.9% (95% CI: 57.1-99.5). The positive predictive value and negative predictive value were, respectively, 98.4% (95% CI: 90.2-99.9) and 23.3% (95% CI: 12.3-39.0). The presence of steatosis onUS was associated to advanced grades of steatosis on histology (P = 0.016). CONCLUSION: Preoperative abdominal US in our series has not shown to be an accurate method for the diagnosis of hepatic steatosis in severe obese patients. Until another non-invasive method demonstrates better sensitivity and specificity values, histological evaluation may be recommended to these patients undergoing bariatric surgery. | Alessandro de Moura Almeida Helma Pinchemel Cotrim Daniel Batista Valente Barbosa Luciana Gordilho Matteoni de Athayde Adimeia Souza Santos Almir Galvo Vieira Bitencourt Luiz Antonio Rodrigues de Freitas Adriano Rios Erivaldo Alves | 2008 | World Journal of Gastroenterology2008，14，9： | 10 |
| 3 | Endoscopic ultrasound-guided vs endoscopic retrograde cholangiopancreatography biliary drainage for obstructed distal malignant biliary strictures: A systematic review and meta-analysis显示文摘BACKGROUND For palliation of malignant biliary obstruction(MBO), the gold-standard method of biliary drainage is endoscopic retrograde cholangiopancreatography(ERCP)with the placement of metallic stents. Endoscopic ultrasound(EUS)-guided drainage is an alternative that is typically reserved for cases of ERCP failure.Recently, however, there have been robust randomized clinical trials(RCTs)comparing EUS-guided drainage and ERCP as primary approaches to MBO.AIM To compare EUS guidance and ERCP in terms of their effectiveness and safety in palliative biliary drainage for MBO.METHODS This was a systematic review and meta-analysis, in which we searched the MEDLINE, Excerpta Medica, and Cochrane Central Register of Controlled Trials databases. Only RCTs comparing EUS and ERCP for primary drainage of MBO were eligible. All of the studies selected provided data regarding the rates of technical and clinical success, as well as the duration of the procedure, adverse events, and stent patency. We assessed the risk of biases using the Jadad score and the quality of evidence using the Grading of Recommendations Assessment,Development and Evaluation criteria.RESULTS The database searches yielded 5920 records, from which we selected 3 RCTs involving a total of 222 patients(112 submitted to EUS and 110 submitted to ERCP). In the EUS and ERCP groups, the rate of technical success was 91.96%n and 91.81%, respectively, with a risk difference(RD) of 0.00%(95%CI:-0.07, 0.07;P = 0.97; I^2 = 0%). The clinical success was 84.81% and 85.53% in the EUS and ERCP groups, respectively, with an RD of-0.01%(95%CI:-0.12, 0.10; P = 0.90; I^2 =0%). The mean difference(MD) for the duration of the procedure was-0.12%(95%CI:-8.20, 7.97; P = 0.98; I^2 = 84%). In the EUS and ERCP groups, there were14 and 25 adverse events, respectively, with an RD of-0.06%(95%CI:-0.23, 0.12; P= 0.54; I^2 = 77%). The MD for stent patency was 9.32%(95%CI:-4.53, 23.18; P =0.19; I^2 = 44%). The stent dysfunction rate was significantly lower in the EUS t group(MD =-0.22%; 95 CI:-0.35,-0.08; P = 0.001; I^2 = 0%).CONCLUSION EUS represents an interesting alternative to ERCP for MBO drainage,demonstrating lower stent dysfunction rates compared with ERCP. Technical and clinical success, duration, adverse events and patency rates were similar. | Fernanda P Logiudice Wanderlei M Bernardo Facundo Galetti Vitor M Sagae Carolina O Matsubayashi Antonio C Madruga Neto Vitor O Brunaldi Diogo T H de Moura Tomazo Franzini Spencer Cheng Sergio E Matuguma Eduardo G H de Moura | 2019 | World Journal of Gastrointestinal Endoscopy2019，11，4： | 6 |
| 4 | Impaired T-cell differentiation in diabetic foot ulceration显示文摘Foot ulceration is one of the most debilitating complications associated with diabetes,but its cause remains poorly understood.Several studies have been undertaken to understand healing kinetics or find possible therapies to enhance healing.However,few studies have been directed at understanding the immunological alterations that could influence wound healing in diabetes.In this study,we analysed the T-cell receptor(TCR)repertoire diversity in TCR-αβ^(+)T cells.We also analysed the distribution and phenotype of T cells obtained from the peripheral blood of healthy controls and diabetic individuals with or without foot ulcers.Our results showed that diabetic individuals,especially those with foot ulcers,have a significantly lower naive T-cell number and a poorer TCR-Vβrepertoire diversity.We also showed that the reduced TCR-Vβrepertoire diversity in diabetic individuals was mainly owing to the accumulation of effector T cells,the major source of tumour necrosis factor-αproduction,which was even more pronounced in patients with acute foot ulceration.Moreover,the expression of several inflammatory chemokine receptors was significantly reduced in diabetic patients.In conclusion,effector T-cell accumulation and TCR repertoire diversity reduction appear to precede the development of foot ulcers.This finding may open new immunological therapeutic possibilities and provide a new prognostic tool in diabetic wound care. | João Moura João Rodrigues Marta Gonçalves Cláudia Amaral Margarida Lima Eugénia Carvalho | 2017 | Cellular & Molecular Immunology2017，14，9： | 6 |
| 5 | Nonalcoholic fatty liver disease in asymptomatic Brazilian adolescents显示文摘AIM:To evaluate the prevalence and clinical characteristics of Nonalcoholic fatty liver disease(NAFLD) among asymptomatic Brazilian adolescents. METHODS:Transversal observational study included asymptomatic adolescents with central obesity from private and public schools in Salvador-Bahia,northeastern Brazil.The children answered a questionnaire that included age,gender,race,and medical history,and were submitted to a complete physical exam and abdominal ultrasound.Biochemical exams included:ALT,AST,GGT,C reactive protein(CRP),fasting glucose,insulin,cholesterol and triglycerides.Criteria for NAFLD included:the presence of steatosis in ultrasound and/or high level of ALT,negative or occasional historic of intake of alcohol(≤140 g/wk),negative investigation for hepatitis A,B,C,auto-immune hepatitis,Wilson disease and hemochromatosis.RESULTS:From October,2005 to October,2006,the study included 1801 subjects between 11 and 18 years of age and a mean age of 13.7±2.0 years.One hundred ninety-nine had central obesity.The prevalence of NAFLD was 2.3%,most of whom were male and white.Insulin resistance(IR)was observed in 22.9% of them and had positive correlations with ALT and GGT(P<0.05).Elevated CRP was observed in 6.9% of the cases;however,it was not associated with WC,IR or liver enzymes. CONCLUSION:The prevalence of NAFLD in Brazilian adolescents was low.The ethnicity may have influence this frequency in the population studied,which had a large proportion of African descendents. | Raquel Rocha Helma Pinchemel Cotrim Almir Galvo Vieira Bitencourt Daniel Batista Valente Barbosa Adméia Souza Santos Alessandro de Moura Almeida Bruno Cunha Isabel Guimares | 2009 | World Journal of Gastroenterology2009，15，4： | 2 |
| 6 | Population structure of Cniopsis cruentata(Latreille, 1803) in the Paripe estuary, Brazil显示文摘 | MOURA N F O COELHO-FILHO P A COELHO P A | 2000 | Nauplius2000，8，： | 1 |
| 7 | COL1A1 Sp1-binding site polymorphism as a risk factor for genital prolapse显示文摘 | Andrea Moura Rodrigues Manoel Jo?o Batista Castello Gir?o Ismael Dale Cotrim Guerreiro Silva Marair Gracio Ferreira Sartori Karina de Falco Martins Rodrigo de Aquino Castro | 2008 | International Urogynecology Journal2008，，11： | 1 |
| 8 | Seasonality of influenza in the tropics: a distinct pattern in northeastern Brazil 显示文摘 | Moura FE Perdig?o AC Siqueira MM | 2009 | Am J Trop Med Hyg2009，81，1： | 1 |
| 9 | Volatile constituents of cooked bullfrog (Rana catesbeiana) legs显示文摘 | N6BREGA I C C ATA MOURA O M | 2007 | Food Chemistry2007，102，1： | 1 |
| 10 | Stability, antimicrobial activity, and effect of nisin on the physico - chemical properties of fruit juices 显示文摘 | Junior A A D O Moura T R D Barbosa A A T | 2015 | International Journal of Food Microbiology2015，211，： | 1 |
| 11 | Time re- versal in multiple-input multiple-output radar显示文摘 | Jin Yuanwei Moura J M F O'Donoughue N | 2010 | IEEE J of Selected Topics in Signal Processing2010，4，1： | 1 |
| 12 | Rescaled range analysis and detrended fluctuation analysis study of cast irons ultrasonic backscattered signals 显示文摘 | MAURICIO J MATOS O ELINEUDO P MOURA de SILVIO KRUGER E MACCOS J REBELLO A | 2004 | CHAOS SOLITIONS & FRACTALS2004，，19： | 1 |
| 13 | The effects of vacuum induction melting and electron beam melting techniques on the purity of NiTi shape memory alloys显示文摘 | Otubo J Rigo O D Moura Neto C | 2006 | Materials Science and Engineering A2006，438，： | 1 |
| 14 | Applications of micelle and microemulsion systems containing aminated surfactants synthesized from ricinoleic acid as carbon - steel corrosion inhibitors 显示文摘 | MOURA E F NETO A O W DANTAS T N C | 2009 | Colloids and Surfaces A: Physicochemical and Engineering Aspects2009，340，13： | 1 |
| 15 | Dynamical modelling of a genetic algorithm显示文摘 | Solteiro P E Tenreiro M J Moura O P | 2006 | Signal Processing2006，86，10： | 1 |
| 16 | Endoscopic Detection of Early Esophageal Squamous Cell Carcinoma in Patients with Achalasia: Narrow-Band Imaging versus Lugol’s Staining显示文摘 | Edson Ide Fred Olavo Arag?o Andrade Carneiro Mariana Souza Varella Fraz?o Dalton Marques Chaves Rubens Ant?nio Aissar Sallum Eduardo Guimar?es Hourneaux de Moura Paulo Sakai Ivan Cecconello Fauze Maluf-Filho Everson L. A. Artifon | 2013 | Journal of Oncology2013，，： | 1 |
| 17 | Magnetic resonance cholangiography in the diagnosis of biliary complications after orthotopic liver transplantation显示文摘 | M.M Linhares A.M Gonzalez S.M Goldman R.D.S Coelho N.Y Sato R.M.A.M Moura M.H.G Silva V.P Lanzoni A Salzedas C.B Serra T Succi G D’Ippolito J Szejnfeld T Trivi?o | 2004 | Transplantation Proceedings2004，，4： | 1 |
| 18 | Time reversal in multiple-input multiple-output radar显示文摘 | JIN Yuan MOURA J M F O'DONOUGHUE N | | 0，，01： | 1 |
| 19 | Volatile constituents of cooked bullfrog (Rana catesbeiana) legs显示文摘 | Nóbrega I C C Ataíde C S Moura O M | 2007 | Food Chemistry2007，102，1： | 1 |
| 20 | Volatile constituents of cooked bullfrog (Rana catesbeiana) legs显示文摘 | NOBREGA I C C ATAIDE C S MOURA O M | | 0，，01： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员