Resumo

TORRES JIMENEZ, Franklin  e  TORRES BAYONA, Carlos. Molecular pathophysiology in infection by Helicobacter pylori. Salud, Barranquilla [online]. 2016, vol.32, n.3, pp.500-512. ISSN 0120-5552.

Abstract Helicobacter pylori infection is the most common process worldwide bacterial colonization. In 1994 the International Agency for Research on Cancer (IARC) categorized the Helicobacter pylori as a type I carcinogen. The infection by this bacterium increases the risk of gastric cancer to 6 times more than individuals who do not have the infection. Colombia has a prevalence of Helicobacter pylori infection of 86% in adults aged 20 years and 80% in children over 8 years. Persistent infection and recurrent gastric mucosa can generate an inflammatory response, or silent processes, which in, the worst of the cases, can progress to gastric adenocarcinoma diffuse type or intestinal. There are multiple factors that influence the clinical consequences of Helicobacter pylori infection, some of them: host genetic predisposition, genetic immunoregulation of infected patients, environmental factors and heterogeneity of the virulence factors of the various strains. Therefore, we can say that gastric pathologies, especially gastritis and adenocarcinoma, are conditions of multifactorial etiology that may result from various causes or conditions. In this review, we analyze the main aspects related to the molecular pathophysiology in Helicobacter pylori infection, with emphasis on topics related to virulence factors.

Palavras-chave : infection; Helicobacter pylori; virulence factors; inflammation; gastritis.

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