Abstract
Our aim was to investigate whether genetic polymorphism of IL-1Beta-511, IL-1RN, TNF-A-308 are involved in the susceptibility to duodenal ulcer (DU). 437 unrelated Chinese Han patients with DU and 148 healthy controls were genotyped by the polymerase chain reaction-restriction fragment length polymorphism method for the IL-1B-511, TNF-A-308 gene polymorphisms and the VNTR polymorphism in intron 2 of the IL-1RN gene polymorphisms. There was no difference in the genetic polymorphism of IL-1Beta-511, IL-1RN and TNF-A-308 in the patients with DU compared with control. After stratified by Helicobacter pylori infection, they also could not reach significant differences in this study. No statistically significant differences were observed in DU group compared with control according to combination of the IL-1Beta-511 and IL-1RN genotypes regardless of H. pylori positivity. These findings show that no evidence for the involvement of a proinflammatory polymorphism in the IL-1Beta-511, IL-1RN and TNF-A-308 in the susceptibility to DU in China.
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