Abstract
BackgroundDyslipidemia, a metabolic alteration that affects lipoprotein levels, is considered a major risk factor for atherosclerosis and its complications. Dyslipidemia also affects the hemostatic system, especially impairing fibrinolysis, and increased levels of thrombin-activatable fibrinolysis inhibitor (TAFI) have been associated with cardiovascular events. Objectives and methodsThis study evaluated the association of acquired risk factors (hypertension, body mass index — BMI, smoking, sedentary lifestyle, use or not of oral contraceptives and hormone replacement therapy, and post-menopause status), the polymorphisms Thr325Ile (rs1926447), Ala147Thr (rs3742264) and +1542C/G (rs940) in the TAFI gene, and TAFI plasma levels in 109 dyslipidemic and 105 normolipemic individuals. Biochemical analyses and TAFI levels were evaluated by colorimetric/turbidimetric assays and ELISA, respectively. Genotypic and allelic frequencies were determined by polymerase chain reaction (PCR). ResultsHypertension, increased BMI, and menopause were more common in dyslipidemic individuals, who had higher TAFI levels. The alleles 325Ile, Ala147, and C showed association with lower TAFI levels. The rs3742264 polymorphism was associated with dyslipidemia in males. ConclusionsThe results suggest that TAFI levels are independently associated to dyslipidemia and that the polymorphism rs3742264 may be related to cardiovascular risk in male subjects.
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