Arquivos de Gastroenterologia (Arq Gastroenterol )

Publisher: Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia; Colégio Brasileiro de Cirurgia Digestiva; Sociedade Brasileira de Motilidade Digestiva


Publication of the Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia - IBEPEGE, Colégio Brasileiro de Cirurgia Digestiva - CBCD, Sociedade Brasileira de Motilidade Digestiva - SBMD. Mission: To publish scientific papers by national and foreign researchers who are in agreement with the aim of the journal as well as with its editorial policies.

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    Arquivos de Gastroenterologia website
  • Other titles
    Arquivos de gastroenterologia (Online), Archives of gastroenterology
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    Document, Periodical, Internet resource
  • Document type
    Internet Resource, Computer File, Journal / Magazine / Newspaper

Publications in this journal

  • Arquivos de Gastroenterologia 10/2014; 51(4).
  • Arquivos de Gastroenterologia 04/2014; 51(2):77-78.
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    ABSTRACT: Context One of the limitations of 13C-urea breath test for Helicobacter pylori infection diagnosis in Brazil is the substrate acquisition in capsule presentation. Objectives The purpose of this study was to evaluate a capsule-based 13C-urea, manipulated by the Pharmacy Division, for the clinical practice. Methods Fifty patients underwent the conventional and the capsule breath test. Samples were collected at the baseline and after 10, 20 and 30 minutes of 13C-urea ingestion. Urease and histology were used as gold standard in 83 patients. Results In a total of 50 patients, 17 were positive with the conventional 13C-urea (75 mg) breath test at 10, 20 and 30 minutes. When these patients repeated breath test with capsule (50 mg), 17 were positive at 20 minutes and 15 at 10 and 30 minutes. The relative sensitivity of 13C-urea with capsule was 100% at 20 minutes and 88.24% at 10 and at 30 minutes. The relative specificity was 100% at all time intervals. Among 83 patients that underwent capsule breath test and endoscopy the capsule breath test presented 100% of sensitivity and specificity. Conclusions Capsule based breath test with 50 mg 13C-urea at twenty minutes was found highly sensitive and specific for the clinical setting. HEADINGS- Helicobacter pylori. Breath Test. Urea, analysis.
    Arquivos de Gastroenterologia 04/2014; 51(2):133-138.
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    ABSTRACT: Context Crohn's disease is characterized by a chronic and debilitating inflammatory disorder of the gastrointestinal tract. Several factors may contribute to its development. From extensive studies of the human genome, the polymorphism T300A of the gene ATG16L1 (autophagy-related 16-like 1) has been related to increased risk of developing this disease. Objectives Analyze the role of polymorphism T300A (rs2241880) in patients with Crohn's disease. Methods 238 samples from (control group) and 106 samples from patients with Crohn's disease recruited at five Southern Brazilian reference centers were evaluated. The genotyping consisted of the amplification via Polymerase Chain Reaction of the genomic segment encompassing T300A, followed by Restriction Fragment Length Polymorphism analysis. The amplicons and fragments were separated by agarose gel electrophoresis and confirmed under ultraviolet light. Results The genotype AG was more prevalent among patients and controls (50% vs 44.8%), followed by genotypes AA (26.4% vs 35.1%) and GG (23.6% vs 20.1%). The frequency of the allele G of the polymorphism T300A was higher in the group of patients with Crohn's disease (48.6%) than in controls (42.4%), although not reaching statistical significance. Conclusions It was not possible to confirm the increased susceptibility on development of Crohn's disease conferred by polymorphism T300A.
    Arquivos de Gastroenterologia 04/2014; 51(2):97-101.
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    ABSTRACT: Context The mesenteric fat is drained by the portal system, being related to the metabolic syndrome which is an impor-tant risk factor for non-alcoholic fatty liver disease (NAFLD). Objectives Graduate of visceral fat thickness and correlate with the NAFLD degree through ultrasonography method. Methods We studied 352 subjects for age, gender, measures of subcutaneous fat thickness and visceral fat thickness as well as the presence and degree of liver fatty. Was analyzed the independent relationship between visceral fat thickness and NAFLD, and linear regression analysis was used in order to predict the visceral fat thickness from subcutaneous fat thickness. Results The mean age of 225 women (63.9%) and 127 men (36.1%) was 47.5 ± 14.0 (18-77) years, 255 subjects had normal examinations, 97 had NAFLD thus distributed, 37 grade 1, 32 grade 2, and 28 grade 3. The subcutaneous fat thickness ranged from 0.26 to 3.50 cm with a mean of 1.3 ± 0.6 cm and visceral fat thickness ranged from 0.83 to 8.86 cm with a mean of 3.6 ± 1.7 cm. Linear regression showed that for every increase of 1 cm in subcutaneous fat thickness the visceral fat thickness will increase 0.9 cm. Conclusions The visceral fat thickness measured by ultrasonography is a useful and seems to be able to help estimate the risk of NAFLD.
    Arquivos de Gastroenterologia 04/2014; 51(2):118-122.
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    ABSTRACT: Context Celiac disease is an autoimmune disorder of the small intestine associated with several extra-intestinal features, such as reproductive disorders. The relationship between celiac disease and infertility has been previously assessed, with conflicting results. Objectives We seek to determine the relationship between celiac disease and infertility. Methods Data was extracted from case-control or cohort design studies from 1966 to December 2013 using the MEDLINE-Pubmed, EMBASE, LILACS and Cochrane Library databases. We analyzed two kinds of trials: those assessing the risk of infertility in subjects with already diagnosed celiac disease, and those evaluating the prevalence of undiagnosed celiac disease in subjects with a diagnosis of infertility. Results The search yielded 413 potentially relevant studies for revision, 12 of which were finally included for analysis. A significant association was found between women with a diagnosis of infertility and undiagnosed celiac disease [OR 3.09 (95% CI 1.74-5.49)]. When considering those studies assessing the occurrence of infertility in subjects with already-diagnosed celiac disease, no difference was found between celiac disease patients and control subjects [OR 0.99 (0.86-1.13)]. Conclusions Undiagnosed celiac disease is a risk factor for infertility. Women seeking medical advice for this particular condition should be screened for celiac disease. Adoption of a gluten-free diet could have a positive impact on fertility in this group of patients.
    Arquivos de Gastroenterologia 04/2014; 51(2):144-150.
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    ABSTRACT: Context The ingestion of gluten is responsible for the symptoms of Celiac disease, but other environmental factors can also influence. Strains of the Bifidobacterium genus have been shown to afford protection against the inflammatory response and mucosal damage caused by gliadin peptides in vitro. Objectives This study was designed to compare the concentration of fecal bifidobacteria and pH of patients with celiac disease on gluten-free diet and control subjects in order to identify if the imbalance on fecal microbiota still remain during the treatment of celiac disease and identify the necessity of dietary supplementation with pre- or probiotics. Methods It was analyzed the feces of 42 healthy subjects and 14 celiac patients. The bifidobacteria count in feces was done in selective medium BIM-25. Microscopic analysis of the colonies was performed by Gram stain. The identification of the genus Bifidobacterium was performed by determination of fructose-6-phosphate phosphoketolase. Fecal pH was measured using a pH meter. Results The concentration of bifidobacteria per gram of feces was significantly higher in healthy subjects (controls) (1.5 ± 0.63 x108 CFU/g) when compared to celiac patients (2.5 ± 1.5 x107 CFU/g). The fecal pH was not different between celiac patients (7.19 ± 0.521) and controls (7.18 ± 0.522). Conclusions These results suggest that with lower levels of bifidobacteria, celiac patients have an imbalance in the intestinal microbiota, regardless of pH, even while on a gluten-free diet. This fact could favor the pathological process of the disorder.
    Arquivos de Gastroenterologia 04/2014; 51(2):139-143.
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    ABSTRACT: Context The rectal distension in dogs increases the rate of transitory lower esophageal sphincter relaxation considered the main factor causing gastroesophageal reflux. Objectives The aim of this study was evaluate the participation of the nitrergic pathway in the increased transitory lower esophageal sphincter relaxation rate induced by rectal distension in anesthetized dogs. Methods Male mongrel dogs (n = 21), weighing 10-15 kg, were fasted for 12 hours, with water ad libitum. Thereafter, they were anesthetized (ketamine 10 mg.Kg-1 + xylazine 20 mg.Kg-1), so as to carry out the esophageal motility evaluation protocol during 120 min. After a 30-minute basal period, the animals were randomly intravenous treated whith: saline solution 0.15M (1ml.Kg-1), L-NAME (3 mg.Kg-1), L-NAME (3 mg.Kg-1) + L-Arginine (200 mg.Kg-1), glibenclamide (1 mg.Kg-1) or methylene blue (3 mg.Kg-1). Forty-five min after these pre-treatments, the rectum was distended (rectal distension, 5 mL.Kg-1) or not (control) with a latex balloon, with changes in the esophageal motility recorded over 45 min. Data were analyzed using ANOVA followed by Student Newman-Keuls test. Results In comparison to the respective control group, rectal distension induces an increase in transitory lower esophageal sphincter relaxation. Pre-treatment with L-NAME or methylene blue prevents (P<0.05) this phenomenon, which is reversible by L-Arginine plus L-NAME. However, pretreating with glibenclamide failed to abolish this process. Conclusions Therefore, these experiments suggested, that rectal distension increases transitory lower esophageal sphincter relaxation in dogs via through nitrergic pathways.
    Arquivos de Gastroenterologia 04/2014; 51(2):102-106.
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    ABSTRACT: Context Gastric mucosa-associated lymphoid tissue (MALT) lymphoma is clearly associated with Helicobacter pylori gastritis and can be cured with anti- H pylori therapy alone. The presence of t(11;18)(q21;q21) translocation is thought to predict a lower response rate to anti- H pylori treatment. Objectives To study the presence of t(11;18)(q21;q21) genetic translocation and its clinical impact in low-grade gastric MALT lymphoma Brazilian patients. Methods A consecutive series of eight patients with gastric MALT lymphoma were submitted to gastroscopy, endoscopic ultrasound, histopathological examination, H pylori search and RT-PCR-based methodology. All patients received anti-H pylori treatment. Eradicated patients were followed-up every 3-6 months for 2 years. Results Eight patients were studied. All patients had tumor involvement restricted to the mucosa or submucosa and seven patients had low-grade gastric MALT lymphoma. All infected patients achieved H pylori eradication. Histological tumor regression was observed in 5/7 (71%) of the low-grade gastric MALT lymphoma patients. The presence of t(11;18)(q21;q21) translocation was found in 4 (57%) of these patients; among them only two had histological tumor regression following H pylori eradication. Conclusions RT-PCR is a feasible and efficient method to detect t(11;18)(q21;q21) translocation, being carried out in routine molecular biology laboratories. The early detection of such translocation can be very helpful for better targeting the therapy to be applied to gastric MALT lymphoma patients.
    Arquivos de Gastroenterologia 04/2014; 51(2):84-89.
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    ABSTRACT: Context The occurrence of severe dysphagia after laparoscopic total fundoplication is currently an important factor associated with loss of quality of life in patients undergoing this modality of treatment for gastroesophageal reflux disease. Objectives Compare the incidence and evaluate the causes of severe postoperative dysphagia in patients undergoing laparoscopic total fundoplication (LTF) without short gastric vessels division, using the anterior gastric wall (Rossetti LTF) or anterior and posterior gastric walls (Nissen LTF). Methods Analysis of the data of 289 patients submitted to LTF without short gastric vessels division from January 2004 to January 2012, with a minimum follow-up of 6 months. Patients were divided in Group 1 (Rossetti LTF - n = 160) and Group 2 (Nissen LTF - n = 129). Results The overall incidence of severe postoperative dysphagia was 3.11% (4.37% in group 1 and 1.55% in group 2; P = 0.169). The need for surgical treatment of dysphagia was 2.5% in group 1 and 0.78% in group 2 (= 0.264). Distortions of the fundoplication were identified as possible causes of the dysphagia in all patients taken to redo fundoplication after Rossetti LTF. No wrap distortion was seen in redo fundoplication after Nissen LTF. Conclusions The overall incidence of severe postoperative dysphagia did not differ on the reported techniques. Only Rossetti LTF was associated with structural distortion of the fundoplication that could justify the dysphagia.
    Arquivos de Gastroenterologia 04/2014; 51(2):113-117.