Abstract
Stomach pathologies develop in a complex interaction between the host's genetic background and H. pylori virulent genes. Thus, our study aimed to compare active chronic gastritis (ACG), and intestinal metaplasia (IM) with inactive chronic gastritis (ICG), according to interleukin polymorphisms of IL6-174 G/C, IL8-251 A/T, IL1β-511 C/T, and IL1RN VNTR taking into account patient gender and H. pylori genotypes. Interleukin polymorphisms were determined by RFLP-PCR and H. pylori genotype by PCR. IL6-174 GC and IL8-251T allele showed a protective effect in women against ACG development and, conversely, IL8-251 polymorphism showed a risk for men. More virulent H. pylori strains were associated with the IL8-251T allele and IL1β-511T allele in the AGC, and the vacA m1allele and cagE gene from H. pylori was associated with the IM. Analysis of the progression of gastric lesions must take into account host variability genetic associated with genes H. pylori due to the relation between the virulent H. pylori genes and more severe gastric lesions, besides the relevance to the gender to IL6-174 and IL8-251 polymorphisms.
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