title: Additive Antiatherogenic Effects of CETP rs708272 on Serum LDL Subfraction Levels in Patients with CHD Under Statin Therapy.
abstract: Recently, subfraction analysis of serum low density lipoprotein (LDL) is considered to be a better predictor of the risk of coronary heart disease (CHD) compared to the other lipid parameters. The aim of this study was to examine the effects of the HDL-associated Taq1B (rs708272) SNP of cholesterol ester transfer protein (CETP) gene on serum LDL subfractions in patients with CHD. Serum lipid levels were measured enzymatically and LDL subfraction analysis was carried out by the Lipoprint System (Quantimetrix, CA, USA). The CETP rs708272 SNP was studied in 66 healthy controls and 79 patients with CHD receiving statin therapy by the PCR-RFLP technique. The CHD patients had elevated antiatherogenic LDL-1 subfraction (p = 0.042), decreased atherogenic IDL-C subfraction (p = 0.023), and total IDL (p = 0.030) levels compared to the healthy controls. The CETP rs708272 Taq1B minor B2 allele was associated with increased levels of antiatherogenic LDL-1 (B2: 0.40 ± 0.20 vs. B1B1: 0.25 ± 0.08, p = 0.004) and large-LDL (LDL 1-2) subfractions in the CHD group (B2 allele: 0.68 ± 0.41 vs. B1B1: 0.42 ± 0.20; p < 0.05), while it was associated with reduced levels of the large-LDL subfraction in healthy subjects (B2 allele: 0.29 ± 0.14 vs. B1B1: 0.54 ± 0.24; p = 0.017). However, there was no statistically significant association between the CETP rs708272 SNP and small dense LDL subfraction (LDL 3-7) and lipoprotein levels (p > 0.05). Our findings have indicated that the CETP rs708272 SNP together with statin therapy may show a favorable effect on antiatherogenic LDL-1 and large-LDL subfractions in CHD patients with an atherogenic effect on large-LDL subfraction in healthy subjects. Based on these results, it can be concluded that the effects of the CETP variation on LDL subfraction could change in cardiometabolic events such as CHD and statin therapy.
authors.affiliation: Department of Molecular Medicine, Institute for Experimental Medicine, Istanbul University, Vakif Gureba c., Capa, 34093, Istanbul, Turkey.
authors.forename: Deniz
authors.initials: D
authors.lastname: Kanca
authors.affiliation: Department of Biochemistry, Istanbul Bilim University, Istanbul, Turkey.
authors.forename: Uzay
authors.initials: U
authors.lastname: Gormus
authors.affiliation: Department of Molecular Medicine, Institute for Experimental Medicine, Istanbul University, Vakif Gureba c., Capa, 34093, Istanbul, Turkey.
authors.forename: Bengu
authors.initials: B
authors.lastname: Tokat
authors.affiliation: Department of Molecular Medicine, Institute for Experimental Medicine, Istanbul University, Vakif Gureba c., Capa, 34093, Istanbul, Turkey.
authors.forename: Allison P
authors.initials: AP
authors.lastname: Eronat
authors.affiliation: Department of Cardiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey.
authors.forename: Zehra
authors.initials: Z
authors.lastname: Bugra
authors.affiliation: Department of Molecular Medicine, Institute for Experimental Medicine, Istanbul University, Vakif Gureba c., Capa, 34093, Istanbul, Turkey.
authors.forename: Oğuz
authors.initials: O
authors.lastname: Ozturk
authors.affiliation: Department of Molecular Medicine, Institute for Experimental Medicine, Istanbul University, Vakif Gureba c., Capa, 34093, Istanbul, Turkey. hulyayilmaz6@gmail.com.
authors.forename: Hulya
authors.initials: H
authors.lastname: Yilmaz-Aydogan
mesh_terms: D053480:Cholesterol Ester Transfer Proteins / Q000235:genetics* / Q000378:metabolism; D008078:Cholesterol, LDL / Q000097:blood / Q000235:genetics*; D003327:Coronary Disease / Q000097:blood / Q000188:drug therapy / Q000235:genetics; D005260:Female; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000008:administration & dosage*; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide
chemical_list: C506642:CETP protein, human; D053480:Cholesterol Ester Transfer Proteins; D008078:Cholesterol, LDL; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors
keywords: CETP; CHD; LDL subfraction; Taq1B (rs708272); sdLDL