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  • Title: [Association of Rs10487667 genetic polymorphism of thromboxane synthase with myocardial infarction in Uigur population of Xinjiang].
    Author: Wang BZ, Ma YT, Fu ZY, Xie X, Zhang XL, Chen BD, Liu F, Yu ZX.
    Journal: Zhonghua Yu Fang Yi Xue Za Zhi; 2010 Nov; 44(11):1032-6. PubMed ID: 21215134.
    Abstract:
    OBJECTIVE: To investigate the association between the polymorphism of thromboxane synthase gene (CYP5A1) and myocardial infarction (MI) of Uigur nationality patients in Xinjiang. METHODS: Rs10487667 site polymorphism in CYP5A1 gene of 318 patients with MI (MI group) and 232 healthy control subjects (control group) were analyzed by polymerase chain reaction and restriction fragment length polymorphism. The serum thromboxane B(2)(TXB(2)) concentration was also detected in all subjects. The relationship of multiple factors and myocardial infarction was evaluated comprehensively by non-condition logistic regression analysis. RESULTS: The frequencies of CYP5A1 gene Rs10487667 site polymorphism in MI group and control group were: GG type 0.204 (65/318) and 0.155 (36/232), GT type 0.553 (176/318) and 0.466 (106/232), TT type 0.242 (77/318) and 0.379 (88/232), respectively. There was significant difference in frequencies of GG genotype (χ(2) = 12.193, P = 0.002) between two groups and G allele frequency in MI group (0.481 (306/636)) was significant higher than control group (0.388 (180/464)) (χ(2) = 9.449, P = 0.021), but no difference in frequencies of GT and TT genotypes (χ(2) = 0.699, P > 0.05)between controls and MI cases. There was significant difference in serum TXB(2) level between MI ((184.3 ± 34.7) pg/ml) and control ((124.3 ± 28.1) pg/ml) groups (t = 5.503, P = 0.034). In the case and control group, the serum TXB(2) level of the person with GT + GG genotype ((164.21 ± 22.56) and (134.26 ± 19.83) pg/ml)) was significant higher than those of TT genotypes ((113.67 ± 54.23) and (98.54 ± 13.11) pg/ml) (t values were 5.433 and 5.108, respectively, both P values < 0.05). Logistic regression analysis showed that the T allele of the CYP5A1 gene was one independent risk factor of MI (OR = 1.673, 95%CI: 1.020 - 2.156) after adjustment of risk factors. CONCLUSION: Rs10487667 polymorphism in CYP5A1 gene might be a risk factor of MI in Uigur population in Xinjiang, which maybe related with the significant high serum TXB(2) level.
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