Background Helicobacter pylori is a major cause of chronic gastritis and an established risk
factor for gastric adenocarcinoma. This bacterium also exhibits an extraordinarily high …

Aims: This study aims to evaluate the prevalence of H. pylori cagA and vacA genotypes in
our region and to determine their relationship to the severity of the lesions that they cause …

Infection with Helicobacter pylori strains harboring determinants of pathogenicity may lead to
a strong inflammatory response in gastric mucosa. In this work, we examined the frequency …

Helicobacter pylori (H. pylori) plays a crucial role in the pathogenesis of gastritis, peptic
ulcer, and gastric cancer. The presence of pathogenicity islands (PAI) genes contributes to …

The varieties of infections caused by Helicobacter pylori may be due to differences in
bacterial genotypes and virulence factors as well as environmental and host-related factors …

The molecular epidemiology of Helicobacter pylori in Africa is poorly documented. From
January 2007 to December 2008, we investigated 187 patients with gastric symptoms in one …

Background The cytotoxin associated gene A (cagA), and the vacuolating cytotoxin gene A
(vacA) of Helicobacter pylori have been associated to phenotypic characteristics of …

Background H. pylori seroprevalence in Brazilians varies and is dependent on
socioeconomic status, sanitation conditions and ethnicity; furthermore, H. pylori is not always …

The clinical outcome of Helicobacter pylori infection may be associated with the cagA
bacterial genotype. To investigate the cagA status of H. pylori-infected patients and the …

Abstract Background: Associations between Helicobacter pylori gene diversity and gastric
cancer have not been reported on in Costa Rica, despite its being one of the countries with …