Investigation on two polymorphisms effective on HDL-C concentration in patients with coronary artery disease using restriction fragment length polymorphism

Gatreh Samani, K. and Noori, M. and RahbaniNobar, M. and Hashemzadeh, M. and Farrokhi, E. and DarabiAmin, M. (2008) Investigation on two polymorphisms effective on HDL-C concentration in patients with coronary artery disease using restriction fragment length polymorphism. journal of shahrekord university of medical sciences, 10 (2).

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Abstract

Background and aim: High density lipoprotein cholesterol (HDL-C) is a known inverse predictor of coronary heart disease (CHD). Cholesteryl ester transfer protein (CETP) and hepatic lipase (HL) are key proteins in HDL-C metabolism so that decreased CETP or HL activity is associated with high HDL-C. -629C/A polymorphism in promoter of CETP gene and-514C/T in promoter of HL gene were previously reported to reduce related protein level in plasma. In this study association of these polymorphisms with CHD related to HDL-C level were investigated. Methods: In this analytical-descriptive study 321 subjects underwent coronary angiography and divided in two groups base on angiogram (non CAD = 135 and CAD = 186). Serum lipids profile was measured by standard procedure and genotype was detected using PCR-RFLP method. Results: Overall the CETP genotype frequencies were in CAD patients: 58.8% (n=110), 28.9% (n=54) and 12.3% (n=23) and in non CAD patients: 45.2% (n=61), 41.5% (n=56) and 13.3% (n=18) for AA, CA and CC respectively. HL genotype frequencies were in CAD patients: 61.6% (n=114), 33.5% (n=62) and 4.9% (n=9) and in non CAD patients: 65.9% (n=89), 27.4% (n=37) and 6.7% (n=9) for CC, CT and TT respectively. In control group HDL-C concentration was higher for AA than CC genotype in -629C/A, and also for TT than CC genotype in -514C/T. Allele A in all subjects and T allele in woman were higher in CAD than non CAD group. A high increase in HDL-C level (10. mg/dl) was observed in individuals with CETP-AA/LIPC-TT and CETP-CA/LIPC-TT relative to CETP-CC/LIPC-CC across all subjects (P< 0.001) but there was no difference in CAD prevalence. Conclusion: Allele A from -629C/A, and T from -514C/T even with the increasing of HDL-C concentration had higher frequency in CAD than non CAD group. Therefore, it seems that HDL-C didn’t protect coronary artery when CETP or HL activity was reduced by these polymorphisms.

Item Type: Article
Uncontrolled Keywords: Cholesteryl ester transfer protein, Coronary artery disease, Hepatic lipase, HDL-C, Restriction enzyme.
Subjects: WG Cardiovascular System
QU Biochemistry
Divisions: Faculty of Medicine > Basic Sciences Academic Groups > Department of Biochemistry and Genetics
Reserach Vice-Chancellar Department > Cellular and Molecular Research Center
Reserach Vice-Chancellar Department > Journal of Shahrekord University of Medical Sciences
Depositing User: zahra bagheri .
Date Deposited: 03 Oct 2017 06:13
Last Modified: 03 Oct 2017 06:13
URI: http://eprints.skums.ac.ir/id/eprint/5743

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