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Helicobacter pylori virulence genes.

Anja Šterbenc1, Erika Jarc1, Mario Poljak1

  • 1Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana 1000, Slovenia.

World Journal of Gastroenterology
|September 24, 2019
PubMed
Summary

Helicobacter pylori (H. pylori) infection is common, but disease development depends on bacterial virulence factors interacting with host and environmental elements. This review examines key H. pylori virulence genes and their clinical significance in adults and children.

Keywords:
AdultsBacterial toxinsChildrenDisease associationHelicobacter pyloriOuter membrane proteinsVirulence genes

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Area of Science:

  • Microbiology
  • Pathogenesis
  • Gastroenterology

Background:

  • Helicobacter pylori infects half the world's population, but only some develop severe gastroduodenal diseases.
  • Disease outcome results from complex interactions between host, environmental, and bacterial virulence factors.
  • H. pylori possesses specific virulence genes for survival, motility, and adhesion to gastric cells, leading to chronic inflammation and potential ulcers or cancer.

Purpose of the Study:

  • To review key H. pylori virulence genes.
  • To analyze the prevalence, clinical significance, and relationships of these genes in children and adults.
  • To explore the role of bacterial factors in H. pylori pathogenesis.

Main Methods:

  • Literature review of studies on H. pylori virulence genes.
  • Analysis of prevalence data in different populations (children and adults).
  • Examination of clinical significance and associations of specific virulence factors like adhesins and toxins.

Main Results:

  • Several H. pylori virulence factors have been identified, including adhesins and toxins.
  • Disease associations with specific virulence genes are not always clear across diverse study populations.
  • The review synthesizes findings on the prevalence and impact of key H. pylori virulence genes.

Conclusions:

  • H. pylori virulence factors are crucial for colonization and disease progression.
  • Understanding these factors is key to deciphering H. pylori pathogenesis.
  • Further research is needed to clarify gene-disease associations across populations.