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|Type:||Artigo de periódico|
|Title:||Homocysteine And Mthfr And Vegf Gene Polymorphisms: Impact On Coronary Artery Disease [homocisteína E Polimorfismos Dos Genes Mthfr E Vegf: Impacto Na Doença Arterial Coronariana]|
De Godoy M.F.
|Abstract:||Background: Polymorphisms in genes involved in the atherosclerosis development, angiogenesis, and homocysteine (Hcy) metabolism could be risk factors for coronary artery disease (CAD). Objective: To evaluate the effect of the VEGF C-2578A and MTHFR C677T polymorphisms on CAD, and the association of these polymorphisms with the severity and extension of atherosclerotic lesions and Hcy concentrations. Methods: Two hundred and forty-four subjects were evaluated by coronary angiography and included in the study (145 with CAD and 99 controls). The VEGF C-2578A and MTHFR C677T polymorphisms were investigated by the PCR-SSCP and PCR-RFLP techniques, respectively. Plasma Hcy was quantified by liquid chromatography/sequential mass spectrometry (LC-MS/MS). Results: There was no significant difference in allele and genotype distribution between the groups, for both polymorphisms. The univariate analysis showed a higher frequency of the VEGF -2578AA genotype in the group with three-vessel disease (p=0.044). In addition, the VEGF -2578CA genotype was observed more frequently among individuals with <95% stenosis (p=0.010). After adjustment for other risk factors for CAD in a multivariate model, the VEGF C-2578A polymorphism was not found to be an independent correlate of CAD (p=0.688). The MTHFR polymorphism did not show any association with the extension and/or severity of the CAD. The MTHFR C677T polymorphism showed no direct association with hyperhomocysteinemia or increased mean plasma concentrations of Hcy. Conclusion: Although there is an apparent association between VEGF C-2578A and the development of coronary atherosclerosis, this association is not independent of conventional cardiovascular risk factors.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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