Iranian Journal of Immunology

Angiotensin Converting Enzyme Gene Polymorphism in Iranian Patients with Type 2 Diabetes

Document Type : Original Article

Authors

Abdol Rahim Nikzamir 1
Taghi Golmohammadi 1
Manouchehr Nakhjavani 2
Mahine Zahraei 1
Ali Akbar Amirzargar 3

1 Department of Medical Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran

2 Department of Endocrinology and Metabolism, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran

3 Immunogenetic Laboratory, Department of Immunology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran

https://doi.org/10.22034/iji.2006.16930
Abstract
Background: Angiotensin I converting enzyme (ACE) is a Zinc metalloproteinase, converts Ang-I to Ang- II, a pro-inflammatory agent which may contribute to pathophysiology of some diseases like type 2 diabetes.
Objective: To investigate the relationship between ACE I/D polymorphism and type 2 diabetes in 261 Iranian casecontrol pairs.
Methods: 170 patients (85 type 2 diabetics with nephropathy and 85 type 2 diabetics without nephropathy) and 91 healthy control subjects were enrolled in our study. I/D polymorphism of the ACE gene was detected by polymerase chain reaction (PCR) utilizing specific primers.
Results: The frequency of DD genotype in the DN group was higher than that of the type 2 diabetic patients (30.6% vs. 20%, P =0.157) and the control group (30.6% vs. 14.3%, P=0.006). The frequency of D allele in nephropathic patients was 58.2% as compared to type 2 diabetic patients without nephropathy 50.5% (P=0.19) and control subjects 37.3% (P =0.001). Therefore, the frequency of DD genotype and D allele significantly increased in DN patients in comparison to healthy controls.
Conclusion: It is concluded that the DD genotype and/or D allele of ACE gene may increase the risk for type 2 diabetes but not diabetic nephropathy.

Keywords

Angiotensin Converting Enzyme
Type 2 Diabetes
Nephropathy

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