Abstract
Background: The common and major pathological change in ischemic stroke is atherosclerosis in the artery. Tumor necrosis factor-a (TNF-a) is closely related to the pathogenesis of atherosclerosis. The aim of our study was to investigate whether TNF-a gene variants (-238G/A and -308G/A) are associated with ischemic stroke. Methods: A total of 619 ischemic stroke patients and 612 controls were recruited to estimate the frequencies of two TNF-a (-238G/A and -308G/A) single nucleotide polymorphisms using a Sequenom MassARRAY time-of-flight mass spectrometer. The association between TNF-a gene polymorphisms and ischemic stroke risk was evaluated by computing the odds ratio (OR) and 95% Confidence Interval with multivariate unconditional logistic regression analyses. Results: The OR results indicated that no significant associations were found between TNF-a gene (-238G/A and -308G/A) polymorphisms and the risk of ischemic stroke using five genetic models, including the allele model (A vs. G), co-dominant model 1 (GA vs. GG), co-dominant model 2 (AA vs. GG), the dominant model (AA+GA vs. GG), and the recessive model (GG+GA vs. AA). Conclusions: The TNF-a (-238G/A and -308G/A) gene polymorphisms may not be a susceptible predictor of ischemic stroke in Chinese populations.
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