TLR9 gene polymorphism confers risk to Helicobacter pylori infection in Jiangsu, China and its inspiration for precision nursing car.

BACKGROUND: The number of studies which investigate the association between TLR9 gene polymorphism and Helicobacter pylori (H.pylori) infection is low and their results are not consistent.

OBJECTIVE: To get a better understanding of the association between TLR9 gene polymorphism and H.pylori infection, providing basis and risk assessment for precision nursing for hospital nurses.

METHODS: A total of 630 normal physical examination subjects were collected including 240 H.pylori (+) and 390 H.pylori (-) subjects. PCR-RFLP was applied to investigate the present polymorphism. At the same time, the meta-analysis was performed between TLR9 gene polymorphism and H.pylori infection risk.

RESULTS: Three genotypes (TT, TC, and CC) were observed for TLR9 gene rs187084 polymorphism. CC genotype and C allele were responsible for the significant associations (all P< 0.05). Meta-analysis found no significant associations were found by any genetic models (all P> 0.05).

CONCLUSION: TLR9 polymorphism has a crucial role in H.pylori infection risk and CC genotype confers increased risk to H.pylori infection in the Southern Chinese population. After understanding the influence of TLR9 gene polymorphism on H.pylori infection, nurses can improve the risk assessment of Helicobacter pylori infection and provide health education more personally.