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| 1 | Thiopurine-methyltransferase variants in inflammatory bowel disease:Prevalence and toxicity in Brazilian patients显示文摘AIM:To analyze the prevalence of thiopurine-methyltransferase(TPMT)genotypes and their associationwith drug toxicity in inflammatory bowel disease(IBD)patients from southeastern Brazil.METHODS:A total of 219 consecutive patients with IBD,of which 146 had Crohn’s disease and 73 had ulcerative colitis,regularly seen at the outpatient unit of the Division of Gastroenterology at the University Hospital Pedro Ernesto of the State University of Rio de Janeiro,a tertiary referral center,were enrolled in this study from February 2009 to January 2011.We analyzed the presence of major TPMT genetic variants(TPMT*2,*3A,*3C)in IBD patients by means of a specific allele and RFLP-PCR.Genomic DNA was isolated from peripheral blood leukocytes by proteinase-K/Sodium Dodecyl Sulfate digestion and phenol-chloroform extraction.TPMT*2(C238G),TPMT*3A(G460A/A719G),and TPMT*3C(A719G)genotypes were detected by real-time polymerase chain reaction followed by direct sequencing with specific primers.Clinical data were systematically recorded,and correlated with the genotype results.RESULTS:The distribution of the selected TPMT gene polymorphism TPMT*2(C238G),TPMT*3A(G460A/A719G),and TPMT*3C(A719G)genotypes was 3.6%,5.4%,and 7.7%of the patients,respectively.Among the side effects recorded from patients taking azathioprine,14 patients presented with pancreatitis and/or an elevation of pancreatic enzymes,while 6 patients had liver toxicity,and 2 patients exhibited myelosuppression/neutropenia.TPMT polymorphisms were detected in 37/219 patients(8 heterozygous for*2,11 heterozygous for*3A,and 18 heterozygous for*3C).No homozygotic polymorphisms were found.Despite the prevalence of the TPMT*3C genotype,no differences among the genotype frequencies were significant.Although no association was detected regarding myelotoxicity or hepatotoxicity,a trend towards the elevation of pancreatic enzymes was observed for TPMT*2 and TPMT*3C genotypes.CONCLUSION:The prevalence of TPMT genotypes was high among Brazilian patients.Variants genes*2and*3C may be associated with azathioprine pancreatic toxicity in a IBD southeastern Brazilian population. | Ana Teresa P Carvalho Barbara C Esberard Renata S B Fróes Davy C M Rapozo Ana B Grinman Tatiana A Simo Juliana C V C Santos Antonio José V Carneiro Luis Felipe Ribeiro-Pinto Heitor S P de Souza | 2014 | World Journal of Gastroenterology2014，20，12： | 3 |
| 2 | rate of adverse events of gastroduodenal snare polypectomy for non-flat polyp is low: A prospective and multicenter study显示文摘AIM To evaluate the rate of adverse events(AEs) during consecutive gastric and duodenal polypectomies in several Spanish centers. METHODS Polypectomies of protruded gastric or duodenal polyps ≥ 5 mm using hot snare were prospectively included. Prophylactic measures of hemorrhage were allowed in predefined cases. AEs were defined and graded according to the lexicon recommended by the American Society for Gastrointestinal Endoscopy. Patients were followed for 48 h, one week and 1 mo after theprocedure. RESULTS308 patients were included and a single polypectomy was performed in 205. Only 36(11.7%) were on prior anticoagulant therapy. Mean polyp size was 15 ± 8.9 mm(5-60) and in 294 cases(95.4%) were located in the stomach. Hemorrhage prophylaxis was performed in 219(71.1%) patients. Nine patients presented AEs(2.9%), and 6 of them were bleeding(n = 6, 1.9%)(in 5 out of 6 AE, different types of endoscopic treatment were performed). Other 24 hemorrhagic episodes could be managed without any change in the outcome of the endoscopy and, consequently, were considered incidents. We did not find any independent risk factor of bleeding.CONCLUSION Gastroduodenal polypectomy using prophylactic measures has a rate of AEs small enough to consider this procedure a safe and effective method for polyp resection independently of the polyp size and location. | Henry Córdova Lidia Argüello Carme Loras Antonio Naranjo Rodríguez Faust Riu Pons Joan B Gornals David Nicolás-Pérez Xavier Andújar Murcia Luis Hernández Santos Santolaria Carles Leal Carles Pons Enrique Pérez-Cuadrado-Robles Orlando García-Bosch Michel Papo Berger José Luis Ulla Rocha Cristina Sánchez-Montes Gloria Fernández-Esparrach | 2017 | World Journal of Gastroenterology2017，23，47： | 3 |
| 3 | Sex-specific effects of Eugenia punicifolia extract on gastric ulcer healing in rats显示文摘AIM To evaluate the sex-specific effects of a hydroalcoholic extract from Eugenia punicifolia(HEEP) leaves on gastric ulcer healing.METHODS In this rat study involving males, intact(cycling) females, and ovariectomized females, gastric ulcers were induced using acetic acid. A vehicle, lansoprazole, or HEEP was administered for 14 d after ulcer induction. Body weight was monitored throughout the treatment period. At the end of treatment, the rats were euthanized and the following in vivo and in vitro investigations were performed: macroscopic examination of the lesion area and organ weights, biochemical analysis, zymography, and evaluation of protein expression levels. Additionally, the concentration-dependent effect of HEEP was evaluated in terms of subacute toxicity and cytotoxicity.RESULTS Compared to the vehicle, HEEP demonstrated a great healing capacity by substantially reducing the ulcerative lesion area in males(52.44%), intact females(85.22%), and ovariectomized females(65.47%), confirming that HEEP accelerates the healing of acetic acidinduced gastric lesions and suggesting that this effect is modulated by female sex hormones. The antiulcer effect of HEEP was mediated by prostaglandin E2 only in male rats. Overall, the beneficial effect of HEEP was the highest in intact females. Notably, HEEP promoted the expression of vascular endothelial growth factor(intact vs ovariectomized females) and decreased the expression of Caspase-8 and Bcl-2(intact female vs male or ovariectomized female). Additionally, HEEP enhanced fibroblast proliferation and migration into a wounded area in vitro, confirming its healing effect. Finally, no sign of subacute toxicity or cytotoxicity of HEEP was observed.CONCLUSION In gastric ulcers, HEEP-induced healing(modulated by female sex hormones; in males, mediated by prostaglandin) involves extracellular matrix remodeling, with gastric mucosa cell proliferation and migration. | Larissa Lucena Périco Vinícius Peixoto Rodrigues Rie Ohara Gabriela Bueno Vania Vasti Alfieri Nunes Raquel Cássia dos Santos Ana Carolina Lima Camargo Luis Antuio Justulin Joior Sérgio Faloni de Andrade Viviane Miranda Bispo Steimbach Luísa Mota da Silva Lúcia Regina Machado da Rocha Wagner Vilegas Catarina dos Santos Clélia Akiko Hiruma-Lima | 2018 | World Journal of Gastroenterology2018，24，38： | 3 |
| 4 | Impact of changes in the treatment of nasopharyngeal carcinoma: an experience of 30 years 显示文摘 | Santos JA Gonzalez C Cuesta P | 1995 | Radiotherapy and Oncology1995，36，2： | 2 |
| 5 | Purification of metallurgical grade silicon by acid leaching显示文摘 | SANTOS I C GONCALVES A P SANTOS C S ALMEIDA M AFONSO M H CRUZ M J | 1990 | Hydrometallurgy1990，23，： | 1 |
| 6 | Aromaticity and electronic structure of silabenzenes, possible existence of a new cluster Si6 Li6 显示文摘 | Santos J C Fuentealba P | 2007 | Chem Phys Lett2007，443，456： | 1 |
| 7 | Correspondence between left ventricular 17 myocardial segments and coronary anatomy obtained by multi - detector com- puted tomography: an ex vivo contribution显示文摘 | Donato P Coelho P Santos C er al | 2012 | Surg Radiol Anat2012，34，9： | 1 |
| 8 | Mechanical properties of HSLA bainitic steel subjected to controlled rolling with accelerated cooling显示文摘 | RODRIGUES P C M PERELOMA E V SANTOS D B | 2000 | Materials Science and Engineering: A2000，283，： | 1 |
| 9 | Response of antioxidant enzymes in freshwater fish populations (Leuciscus alburnides complex)to inorginanic pollu- tants exposure显示文摘 | Lopes P A Pinheiro T Santos M C | 2001 | Sci Total Environ2001，280，13： | 1 |
| 10 | Immunohisto-chemical evidence of PTEN in oral squamous cell carcinoma and its correlation with the histological malignancy grading system显示文摘 | Squarize C H Castilho R M Santos P D Jr | 2002 | J Oral Pathol Med2002，31，： | 1 |
| 11 | Structure of NiCrAlY coatings deposited on single-crystal alloy turbine blade material by laser cladding 显示文摘 | VILAR R SANTOS E C FERREIRA P N FRANCO N DA SILVA | 2009 | Acta Materialia2009，57，18： | 1 |
| 12 | 查看详情显示文摘 | Santos C N Menses D D S Echegut P Neuville D R Hernandes A C Ibanez A | | 0，，： | 1 |
| 13 | Formation of ultra- fine ferrite mierostructure in warm rolled and annealed C-Mn steel显示文摘 | Santos D B Bruzszek R K Rodrigues P C M | 2003 | Materials Science and Engineering: A2003，346，12： | 1 |
| 14 | Genetic markers in ribosomal DNA for the identification of members of the genus Anisakis (Nematoda : Ascaridoidea) defined by polymerase chain reaction-based restriction fragment length polymorphism 显示文摘 | D'Amelio S Mathiopoulos K D Santos C P | 2000 | Int J Parasitol2000，30，2： | 1 |
| 15 | Role of macrophage migration in- hibitory factor (M1F) in murine antigen-induced arthritis: interaction with glucocorticoids显示文摘 | Santos L Hall P Metz C | 2001 | Clin Exp Immunol2001，123，2： | 1 |
| 16 | Pathophysiology of ventila- tor-associated lung injury 显示文摘 | Rocco PR Dos Santos C Pelosi P | 2012 | Curr Opin Anaesthesiol2012，25，2： | 1 |
| 17 | Towards automatic conflict de- tection in home and building automation systems 显示文摘 | Carreira P Resendes S Santos A C | 2014 | Pervasive and Mobile Computing2014，12，： | 1 |
| 18 | Comparison of three single-phase PLL algorithms for UPS applications显示文摘 | Santos Filho R M Seixas P F Cortizo P C | 2008 | IEEE Transactions on Industrial Electronics2008，55，8： | 1 |
| 19 | Effect of cigarette smoking on serum alpha-tocopherol and the lipid profile in a Portuguese population显示文摘 | LOPES P A SANTOS M C VICENTE L VIEGAS-CRESPO A M | 2004 | Clin Chim Acta2004，348，12： | 1 |
| 20 | Chronic stress impairs rat growth and jejunal epithelial barrier function:role of mast cells 显示文摘 | SANTOS J MICHELLE B YANG P C | 2000 | Am J Physiol Gastrointest Liver Physiol2000，278，6： | 1 |
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