en ژنتیک Genetic پژوهشي Research <p><b>Background:</b> Coronary artery disease (CAD) is one of the leading causes of death and disability around the world. Interaction between genetic and environmental factors determines susceptibility of an individual to develop coronary artery disease . Lipoprotein lipase (LPL) play an important role in the metabolism of HDL-C ( High Density Lipoprotein Cholesterol ), LDL-C (Low Density Lipoprotein Cholesterol ) and triglycerides (TG). Dysfunction of LPL as a result of genetic variants of lipoprotein lipase gene is associated with increased risk of CAD. The aim of the present study was to investigate the relationship between the risk of coronary artery disease and LDL-C, HDL-C and TG (triglycerides) levels by lipoprotein lipase gene Hind III polymorphism.<br> <b>Materials and Methods:</b> A total of 202 subjects including 114 patients with coronary artery disease and 88 control participated in this study. The Hind III polymorphism of the lipoprotein lipase gene was determined by PCR- RFLP (Polymerase Chain Reaction-Restriction Fragment Length Polymorphism) . In the presence and absence of restriction site, the genotypes are described H+/+ , H-/- respectively.<br> <b>Results:</b> In this survey, a highly significant association between the frequent H+/+ genotype and unfavorable TG levels was observed in our population . For the Hind III genotypes, within the healthy subjects (n=88), the H+/+ genotype was found in 67 individuals (58.8%), H-/+ genotype in 38 individuals (33.3%) , and 9 individuals (7.8%) carried the H-/- genotype. Within the CAD group (n=114), 47 individuals (53.4%) with H+/+ genotype, 36 (41%) with H-/+ genotype, and 5 (5.6%) carried the H-/- genotype.<br> <b>Conclusion:</b> There was a significant difference between the distribution of LPL&ndash;Hind III genotypes and the healthy subjects and the patients with CAD (P<0.05, 0. 645). LPL&ndash;Hind III polymorphisms were not detected as independent risk factors for CAD in this study group, but had significant associations with TG levels (P<0.05).</p> Coronary artery disease (CAD), Lipoprotein lipase (LPL), Hind III Polymorphism, RFLP, dyslipidemia 19 24 http://rmm.mazums.ac.ir/browse.php?a_code=A-10-26-18&slc_lang=en&sid=1 Mahdieh Imeni 10031947532846005987 10031947532846005987 No Biology Department, Islamic Azad University of pharmaceutical sciences, Tehran, Iran Mandana Hasanzad 10031947532846005988 10031947532846005988 No Medical Sciences Research Center, Tehran Medical Branch, Islamic Azad University, Tehran, Iran Tahereh Naji 10031947532846005989 10031947532846005989 No Biology Department, Islamic Azad University of pharmaceutical sciences, Tehran, Iran Behzad Poopak 10031947532846005990 10031947532846005990 No Medical Sciences Research Center, Tehran Medical Branch, Islamic Azad University, Tehran, Iran Mojgan Babanejad 10031947532846005991 10031947532846005991 No Cardiogenetics Research Center, Shahid Rajaie Cardiovascular. Medical & Research Center, Tehran University of Medical Sciences, Tehran, Iran. Hamid Reza Sanati 10031947532846005992 10031947532846005992 No Cardiogenetics Research Center, Shahid Rajaie Cardiovascular. Medical & Research Center, Tehran University of Medical Sciences, Tehran, Iran. Reyhaneh Kameli 10031947532846005993 10031947532846005993 No Biology Department, Islamic Azad University of pharmaceutical sciences, Tehran, Iran Atoosa Madadkar 10031947532846005994 10031947532846005994 No Cardiogenetics Research Center, Shahid Rajaie Cardiovascular. Medical & Research Center, Tehran University of Medical Sciences, Tehran, Iran Zahra Hosseini Khah 10031947532846005995 10031947532846005995 No Molecular and Cell Biology Research Center, Mazandaran University of Medical Science, Sari, Mazandaran, Iran Seyed Hamid Jamaldini hjam1358@yahoo.co.uk 10031947532846005996 10031947532846005996 Yes Cardiogenetics Research Center, Shahid Rajaie Cardiovascular. Medical & Research Center, Tehran University of Medical Sciences, Tehran, Iran