Helicobacter pylori vacA and cagA genes have significant genetic heterogenicity, resulting
in different clinical outcomes. Northeast part of China has reported high prevalence of H …

Helicobacter pylori (H. pylori) is a major causative bacterium of chronic gas tri tis, peptic
ulcer and mucosaassociated lymphoid tissue lymphoma in humans, and associated with an …

It has been reported that Helicobacter pylori infection with the type I strain, which expresses
the VacA and CagA antigens, is associated with duodenal ulcer. We examined the diversity …

AIM: To establish stock of clinical Helicobacter pylori (H. pylori) isolates, to perform cagA and
vacA typing of these isolates, to evaluate the relationship between genotypes of cagA and …

Background Almost half of the world's population suffer from the Helicobacter pylori (H.
Pylori) infection, but only some individuals develop gastric diseases with clinical symptoms …

Background: Helicobacter pylori infection is closely associated with gastroduodenal
diseases. H. pylori infection with different vacA and cagA genotypes may result in divergent …

Background Allelic variation of the virulence genes, vacA and cagA, as the most important
virulence associated genes play an important role in the pathogenesis of severe …

Purpose: The purpose of this research was to analyze cagA and vacA genotypes status in H.
pylori isolates and relationship with clinical outcomes. Methods: Gastric biopsy specimens …

Background Infection with cagA-positive, cagA EPIYA motif ABD type, and vacA s1, m1, and
i1 genotype strains of Helicobacter pylori is associated with an exacerbated inflammatory …

Methods: Gastric biopsy was taken from 166 patients with nonulcer dyspepsia. The
specimens were processed and DNA from each H. pylori isolate was extracted from multiple …