PMID: 15238825Jul 9, 2004Paper

The effects of lipid-lowering therapy on paraoxonase activities and their relationships with the oxidant-antioxidant system in patients with dyslipidemia

Coronary Artery Disease
Birgül Vanizor KuralAsim Orem

Abstract

Atorvastatin, an inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A reductase, which is used for lipid-lowering therapy, is an effective statin modulating process involved in atherosclerosis. Paraoxonase (PON) associated with high-density lipoprotein (HDL) has been postulated to have a role in protecting low-density lipoprotein (LDL) against oxidative modification. Oxidation of serum LDL is an important early step in the development of atherosclerosis and auto-antibodies against oxidized LDL (AuAb-oxLDL) reflect in-vivo LDL oxidation. To examine the effect of atorvastatin (10 mg/day) therapy on PON activity in serum and HDL, the study group included 40 patients with dyslipidemia (19 women and 21 men), 25 of whom had hypercholesterolemia and of 15 of whom had mixed-type hyperlipidemia. By taking blood samples from the patients, levels of serum lipids, lipid peroxidation product as malondialdehyde (MDA), total antioxidant status (TAS) and AuAb-oxLDL and the activities of PON in serum and isolated HDL were determined. The mean levels of total cholesterol, triglyceride, LDL-cholesterol, MDA and AuAb-oxLDL were decreased while HDL-cholesterol and TAS were increased significantly after lipid-lowering therapy in patients with dyslipid...Continue Reading

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