This Article Free Full Text (Free PDF) Free References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Sekuri, C. Articles by Akin, M. Search for Related Content PubMed PubMed Citation Articles by Sekuri, C. Articles by Akin, M. Social Bookmarking                   What's this?

Renin-angiotensin system gene polymorphisms and premature coronary heart disease

Kent Hospital, Department of Cardiology, Izmir, Turkey, csekuri{at}hotmail.com

F Sirri Cam

Celal Bayar University, Faculty of Medicine, Department of Medical Biology and Genetics, Manisa, Turkey

Ertugrul Ercan

Central Hospital, Department of Cardiology, Izmir, Turkey

Istemihan Tengiz

Central Hospital, Department of Cardiology, Izmir, Turkey

Abdi Sagcan

Kent Hospital, Department of Cardiology, Izmir, Turkey

Erhan Eser

Celal Bayar University, Faculty Of Medicine, Department of Public Health, Manisa, Turkey

Afig Berdeli

Ege University, Faculty of Medicine, Department of Pediatrics, Izmir, Turkey

Mustafa Akin

Ege University, Faculty of Medicine, Department of Pediatrics, Izmir, Turkey

Introduction

Experimental and clinical studies demonstrated that the renin-angiotensin system (RAS) affects the pathogenesis of atherosclerosis and prognosis of coronary heart disease (CHD). The aim of this study was to investigate the genotype distribution and the allele frequencies of three RAS genes polymorphisms and their effects on premature CHD in a Turkish population.

Materials and methods

One-hundred and fifteen Turkish patients with premature CHD and 128 controls were included into the study. Angiotensin-converting enzyme (ACE), angiotensin II type 1 (AT₁) receptor and angiotensinogen (AGT) gene polymorphisms were analysed by polymerase chain reaction (PCR ) and restriction fragment length polymorphism (RFLP).

Results

The patients group showed an increased frequency of the ACE D allele compared with controls (65% vs. 35%, p=0.0001). There was a significant association between the DD genotype and premature CHD (ACE DD vs. ID and II; odds ratio [OR]=2.82 [CI 95% 1.33—2.91, p=0.002]). Also, we observed increased premature CHD risk associated with higher frequencies of the AGT MM genotype in patients when compared with controls (AGT MM vs. TT and MT, OR=1.92 [CI 95% 1.11—3.33, p=0.018]). We found a significant association between AT₁-receptor AA genotype and decreased risk of premature CHD (AT1R AA vs. AC and CC, OR= 0.57[CI 95% 0.34—0.95, p=0.03]).

Conclusions

We demonstrated that increased premature CHD risk is associated with higher frequencies of the ACE DD and AGT MM genotypes. These findings indicate a synergistic contribution of ACE DD and AGT MM polymorphisms to the development of premature CHD. Also, our results suggest that family history, smoking, diabetes, hypertension, obesity and ACE DD genotype were independent risk factors for premature CHD.

Key Words: premature coronary heart disease • renin-angiotensin system • gene polymorphism • cardiovascular risk factors

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				M. M. de Resende, S. L. Amaral, C. Moreno, and A. S. Greene Congenic strains reveal the effect of the renin gene on skeletal muscle angiogenesis induced by electrical stimulation Physiol Genomics, October 8, 2008; 33(1): 33 - 40. [Abstract] [Full Text] [PDF]