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• W2089417406 abstract "Helicobacter pylori infection is associated with the development of several gastroduodenal diseases. Bacterial virulence genes have been found associated with an increased risk for gastric disease.Herein, associations were made between the presence of vacA, cagA, cagE, babA2 and oipA genes in H. pylori isolates and the range of clinical consequences of the infection.PCR was used to amplify vacA, cagA, cagE, babA2 and oipA genes in 166 isolates-50 patients with peptic ulcer, 39 with non-atrophic gastritis, 26 with atrophic gastritis, 26 with intestinal metaplasia and 25 with gastric adenocarcinoma.cagA, cagE, babA2 and oipA genes were found in 73%, 75%, 48% and 74% of isolates, respectively. The cytotoxic vacA s1m1/cagA positive/cage positive genotype was present in 64% (100/157) of isolates. A higher frequency of cytotoxic strains was observed in cancer patients (84%), intestinal metaplasia (91%) and peptic ulcer (81%) in comparison with gastritis patients (50%) (p=0.002, 0.008, 0.007, respectively). The oipA and babA2 frequency was higher in cytotoxic isolates than in non-cytotoxic isolates (oipA: 81% vs. 52%, P=0,003; babA2: 58% vs. 12% (p<0.001). No significant association was found among clinical outcomes and oipA or babA2 genotypes, analyzed alone or in combination with vacA and cagA.Therefore, babA2 or oipA genes are not marker indicators of ulcer or cancer." @default.
• W2089417406 created "2016-06-24" @default.
• W2089417406 creator A5012158652 @default.
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• W2089417406 date "2005-09-01" @default.
• W2089417406 modified "2023-10-14" @default.
• W2089417406 title "Frecuencia de los genotipos babA2, oipA y cagE de Helicobacter pylori en pacientes colombianos con enfermedades gastroduodenales." @default.
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• W2089417406 doi "https://doi.org/10.7705/biomedica.v25i3.1357" @default.
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