RESUMO
BACKGROUND: The purpose of this study was to identify the angiotensin-converting enzyme (ACE) gene (I/D) variations in CAD patients and healthy controls in an Iranian population (West Azerbaijan province of Iran). METHOD: This cross-sectional study included 95 CAD patients and 203 healthy controls. ACE I/D polymorphisms were assessed using PCR, and their frequency was determined. RESULTS: There were 298 people, 95 CAD patients, and 203 controls, with an average age of 50.96±3.45 and 51.14±10.20. We discovered that the frequency of the D allele was significantly higher in CAD patients than in controls (P = 0.0009). In contrast, the frequency of the I allele was significantly higher in controls than in CAD patients (P = 0.0009). The D allele carriers genotypes (DD + ID) were more frequent in the CAD patients than in the control group (P = 0.008). The ACE II genotype-state carriers were more common in the control group than in CAD patients (P = 0.008). However, in the case of the ACE ID genotype, no significant differences were not found in the tested groups (P = 0.47). CONCLUSIONS: These findings suggest that individuals with the ACE DD genotype are predisposed to CAD, whereas individuals with the ACE II genotype state are protected.
RESUMO
The study was conducted to evaluate the association between MMP-1 (rs1799750)-1607 1G/2G and MMP-3 (rs3025058)-1612 5A/6A polymorphisms/haplotypes and coronary artery disease (CAD) risk among Iranian Turks. Totally, 102 patients with CAD and 102 healthy subjects joined the study. Genomic DNA isolation was carried out using "salting out" method from 3 to 4 mL of whole blood samples. The MMP-1 (-1607 2G/1G) and MMP-3 (-1612 5A/6A) promoter gene polymorphisms were detected via polymerase chain reaction restriction fragment length polymorphism. Our results indicated that the frequencies of the MMP-1 (-1607) 2G alleles and 2G/2G genotypes and the MMP-3 (-1612) 6A alleles and 6A/6A genotypes were higher in CAD patients older than 50 years than in healthy controls (P < 0.05). We failed to show statistically significant differences between the CAD patients younger than 50 years and controls concerning MMP-1 -1607 ins/delG (1G > 2 G, rs1799750) and MMP-3 -1612 ins/delA (5A/6A, rs3025058) polymorphisms (P > 0.05). The frequencies of MMP-3/MMP-1 haplotypes were not statistically different among tested groups (P > 0.05). This examination, as the first study of its own kind in Iranian Turks, reported association between MMP-1 (rs1799750) -1607 2G/2G and MMP-3 (rs3025058) -1612 6A/6A genotypes and CAD risk in patients older than 50 years.
