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  • Title: CETP and oxidized LDL levels increase in dyslipidemic subjects.
    Author: Wang J, Gu Q, Li K, Zhang C.
    Journal: Clin Biochem; 2007 Sep; 40(13-14):995-9. PubMed ID: 17658505.
    Abstract:
    OBJECTIVES: To explore the possible associations among cholesteryl ester transfer protein (CETP), contents of lipids in low-density lipoprotein (LDL), and in vivo oxidized LDL (Ox-LDL). DESIGN AND METHODS: CETP and Ox-LDL were both detected by ELISA. Their levels and the lipid contents of LDL were investigated in 200 subjects with various dyslipidaemias. RESULTS: Compared to the control, CETP levels were significantly increased in subjects with mixed hyperlipidaemia and hypercholesterolaemic. Ox-LDL levels were only significantly increased in mixed hyperlipidaemia subjects. Triacyglycerols to cholesterol ratio in LDL was significantly increased in various dyslipidaemias subjects, of which, hypertriglyceridaemic subjects exhibited the most significant change, while hypercholesterolaemic subjects the least. Multiple linear regression analysis showed that total cholesterol and triacyglycerols levels in very low-density lipoprotein were significantly related with CETP (R(2)=0.066), and triacyglycerols and total cholesterol levels were significantly related with Ox-LDL (R(2)=0.094), respectively. CONCLUSIONS: High CETP promotes the transport of lipids among lipoproteins, which changed the lipid composition of LDL, resulting in the increase of in vivo Ox-LDL level, and subsequently contributing to the atherogenic process in dyslipidaemias subjects.
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