Prevalence of the Angiotensin I Converting Enzyme Gene Insertion/Deletion Polymorphism in a Healthy Turkish Population

WOS: 000266074200007PubMed ID: 19390959Angiotensin converting enzyme (ACE) plays an essential role in the renin-angiotensin system. It converts angiotensin I to angiotensin II and inactivates bradykinin and tachykinins. Numerous studies have been published investigating associations of the ACE gene I/D polymorphism with various pathophysiological conditions. We examined the prevalence of the ACE I/D polymorphism in a sample of healthy volunteers from western Turkey, including 1063 healthy Turkish controls. Analysis of the ACE I/D gene polymorphisms by polymerase chain reaction found frequencies of 16.1% for the II genotype, 47.7% for the ID genotype, and 36.2% for the DD genotype. The allele frequency was 39.9% for the I alleles and 60.1% for the D allele. This study demonstrates that the allele and genotype frequency values for the Turkish population are similar to previously published frequencies for Caucasian populations

Association of Angiotensin-Converting Enzyme I/D and eNOS G894T Gene Polymorphisms with Erectile Dysfunction

WOS: 000291330700023Objective: Recent studies suggest that angiotensin II and nitric oxide (NO) may modulate penile smooth muscle tone and contractility. Because genotypes of the angiotensin converting enzyme (ACE) and endothelial nitric oxide synthase (eNOS) polymorphisms have been associated with disorders in the vascular system, in this study, we investigated an association between the ACE I/D and eNOS G894T gene polymorphisms and erectile dysfunction (ED). Material and Methods: A total of 44 patients and 45 control subjects were included in the study. Diagnosis of erectile dysfunction (< 26) was provided by International Index of Erectile Function (IIEF). The ACE I/D ye eNOS G894T gene polymorphisms were genotyped using PCR and RFLP. Results: No significant case-control difference was observed for the ACE I/D and eNOS G894T gene polymorphisms either by genotype or allele frequencies [(ACE I/D-X-2=0.930 p=0.628) and eNOS 894 G/T-X-2=2.114 p=0.348)]. In addition, there was no significant difference between ACE I/D (X-2=3.174 p=0.787) and eNOS G894T (X-2=4.320 p=0.633) and IIEF scores among the patient group. Conclusion: In this study, no association was found between ACE LID and eNOS G894T gene polymorphisms and erectile dysfunction in the Turkish population studied

Effect of monocyte chemoattractant protein-1 (MCP-1) gene polymorphism in Turkish patients with premature coronary artery disease

WOS: 000263221000020PubMed ID: 18651322Objectives. It has been suggested that monocyte chemoattractant protein-1 (MCP-1) is important in the initiation of atherosclerosis and crucial in monocyte recruitment into the subendothelial lesions. Recent studies have demonstrated that MCP-1 -2518 A>G polymorphism is associated with susceptibility to coronary artery disease (CAD). Since there are conflicting reports on the possible association of MCP-1 -2518 A>G polymorphism with CAD, we investigated the role of this polymorphism in Turkish patients with premature CAD. Material and methods. Genomic DNA was collected from 171 premature CAD patients and 151 healthy individuals. MCP-1 -2518 A>G polymorphism was genotyped using the PCR-RFLP method. Results. There were no differences between genotype distribution and allele frequencies in the premature CAD and control groups (AA: 49.7%; AG: 40.3%; GG: 10.0% in premature CAD groups and AA: 53.7%; AG: 34.4%; GG: 11.9% in controls; p = 0.53). The prevalence of the G allele was 0.302 in patients and 0.291 in controls. Conclusions. Our data demonstrate that MCP-1 -2518 A>G polymorphism is not associated with premature CAD in Turkish patients. Further studies are needed to elucidate the role of this polymorphism in the pathogenesis of CAD in various populations

Association between the eNOS (Glu298Asp) and the RAS genes polymorphisms and premature coronary artery disease in a Turkish population

PubMed ID: 15563875The renin-angiotensin system (RAS) and endothelial nitric oxide (NO) affect the pathogenesis of atherosclerosis and prognosis of coronary artery disease (CAD). Previous epidemiologic data suggested that genetic factors are more likely to affect young rather than old people. Our objective was to investigate the association between the polymorphisms of eNOS (Glu298Asp) and the RAS genes and premature CAD in a Turkish population. A total of 115 Turkish patients with premature CAD and 83 controls were included in the study. ACE I/D, AT1R A/C, AGT T/M and eNOS Glu298Asp gene polymorphisms were analysed by polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP). It was found that increased premature CAD risk is associated with higher frequencies of the ACE DD [OR: 2.600 (CI 95% 1.395-4.847, p=0.002)], AGT MM [OR=2.407 (CI 95% 1.267-4.573, p=0.007)] and eNOS 894TT [OR=17.000 (CI 95% 3.952-73.125, p<0.001)] genotypes. Carriers of ACE DD+eNOS 894TT (p=0.002), AGT MM+eNOS 894TT (p=0.001), AT1R AA+eNOS 894TT and AT1R non-AA+eNOS 894TT (p=0.002) genotypes were significantly associated with the risk of premature CAD. This study indicates a synergistic contribution of RAS genes (ACE I/D, AGT T/M, AT1R T/C) and eNOS Glu298Asp polymorphisms to the development of the premature CAD. © 2004 Elsevier B.V. All rights reserved

G protein beta 3 subunit gene polymorphism in Turkish hypertensives

WOS: 000260383300003PubMed ID: 18849222Objective: G protein is one of the most important regulators of intracellular signaling pathways. C825T polymorphism of G protein (33 subunit is associated with increased intracellular signal transduction. The 825T allele has been found associated with a variety of cardiovascular risk factors, including hypertension. The aim of the present study was to investigate the association between the C825T polymorphism of the G protein beta 3 subunit and essential hypertension in Turkish population. Methods: This cross-sectional, case-controlled study included 209 patients with essential hypertension (Patient group) and 82 subjects with normal blood pressure (Control group). The G protein 133 subunit C825T gene polymorphism was determined by polymerase chain reaction. Hypertension was defined according to JNC VII criteria. Statistical analysis was performed using Chi square and unpaired t tests. Logistic regression analysis was used to study association between hypertension and genotypes. Results: We found that the frequencies of the G protein 133 subunit C825T polymorphism in hypertensive and control groups were 17.7%, 59.3%, 23.0% and 32.9%, 48.8%, 18.3%, (CC, CT, TT) respectively (chi(2)=7.963, p=0.019). In the multivariate logistic regression analysis CT genotype had 2.2 (OR=2.262, 95% CI 1.228-4.167, p=0.009), and TT genotype had 2.3 times (OR=2.335, 95% CI 1.089-5.008, p=0.029) greater risk of hypertension compared to CC genotype. Conclusion: It seems that the G protein (33 subunit C825T gene polymorphism is associated with systolic and diastolic blood pressure. Furthermore, the study indicates that the G protein 133 subunit may be a susceptible gene to essential hypertension. (Anadolu Kardiyol Derg 2008; 8: 337-5