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- W2149524128 abstract "To assess the importance of tumour necrosis factor alpha (TNF-alpha) promoter polymorphism in relation to infection with the cytotoxin associated gene A (cagA) subtype of Helicobacter pylori within a dyspeptic Korean population.Eighty three patients with gastric disease and 113 healthy controls were studied. The DNA from gastric biopsy specimens was analysed by H pylori specific and cagA specific polymerase chain reaction (PCR). To characterise TNF-alpha polymorphism at positions -308 and -238, PCR based restriction fragment length polymorphism analysis was performed.Helicobacter pylori infection was closely correlated with G to A transition at position -308 of the TNF-alpha promoter when compared with healthy controls (odds ratio (OR), 2.912; 95% confidence interval (CI), 1.082 to 7.836; p = 0.034). Although TNF-alpha -308 polymorphism in patients with H pylori was not significantly different from that in patients without H pylori, the -308A polymorphism was strongly associated with H pylori cagA subtype infection when compared with the polymorphism in cagA negative H pylori infection (OR, 8.757; 95% CI, 1.413 to 54.262; p = 0.019) and healthy controls (OR, 3.683; 95% CI, 1.343 to 10.101; p = 0.011). G to A genetic change at position -238 of the TNF-alpha gene was not significantly associated with H pylori cagA subtype infection. In addition, genetic polymorphisms at both sites of the TNF-alpha promoter in patients with H pylori infection did not correlate with the severity of disease.TNF-alpha -308A polymorphism was significantly related to infection with the H pylori cagA subtype in Korean patients with gastric disease." @default.
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- W2149524128 date "2001-09-01" @default.
- W2149524128 modified "2023-10-16" @default.
- W2149524128 title "Association between TNF- promoter polymorphism and Helicobacter pylori cagA subtype infection" @default.
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- W2149524128 doi "https://doi.org/10.1136/jcp.54.9.703" @default.
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