The human gastric pathogen, Helicobacter pylori, has co-evolved with its host and
established itself in the human stomach possibly millions of years ago. Therefore, the …

Background Individuals can be infected with multiple strains of Helicobacter pylori. However,
the differences among co-infecting strains have not been well analyzed yet. This study …

Genotypic differences in Helicobacter pylori play an important role in infection. We
characterized the diversity of the cagA, cagE, babA2, and vacA genes in H. pylori strains …

Genetic diversity in Helicobacter pylori strains may affect the function and antigenicity of
virulence factors associated with bacterial infection and, ultimately, disease outcome. In this …

Helicobacter pylori causes chronic gastric inflammation and significantly increases the risk
of duodenal and gastric ulcer disease and distal gastric carcinoma. In this study, we …

Background The genetic diversity of Helicobacter pylori can be analyzed at two different
levels: the genomic variation between strains originating from different individuals, and the …

Objective: Few studies have examined the genetic relationships ofHelicobacter pyloristrains
affecting family members. Our aim was to do so. Methods: We characterizedH. pyloriisolates …

Aim: To evaluate and develop a multiplex polymerase chain reaction (PCR) assay for
diagnosing and specific identification of virulent Helicobacter pylori strains and their main …

The vacA s and m genotypes and the presence of cagA and IS 605 were determined in
Helicobacter pylori strains from patients with mono-and multiple infections. Surprisingly …

Prevalence of H. pylori infection was determined using cultures of gastric biopsy samples of
patients attended at the academic hospital of the Federal University of Paraná, Curitiba …