Table of Contents Author Guidelines Submit a Manuscript
International Journal of Vascular Medicine
Volume 2016, Article ID 6312478, 10 pages
http://dx.doi.org/10.1155/2016/6312478
Clinical Study

Paraoxonase-1 and Simvastatin Treatment in Patients with Stable Coronary Artery Disease

Department of Cardiology, University Hospital, Kopernika Street 17, 31-501 Cracow, Poland

Received 24 September 2015; Revised 14 January 2016; Accepted 20 March 2016

Academic Editor: Karlheinz Peter

Copyright © 2016 Rafał Januszek. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Paraoxonase-1 (PON1) is the crucial antioxidant marker of high-density lipoproteins. The present study is aimed at assessing the effect of simvastatin treatment on PON1 activity and its relationship to Q192R and M55L polymorphisms in subjects with stable coronary artery disease (CAD). Methods. The patient group was composed of 53 individuals with stable CAD, and the control group included 53 sex-matched police officers without CAD. CAD patients were treated with simvastatin 40mg/day for 12 months. Respectively, flow mediated dilatation (FMD), serum hs-CRP and TNF-α levels, urinary 8-iso-PGF2α concentrations, and PON1 activity were evaluated in definitive intervals. Results. There was no effect of simvastatin treatment on urinary 8-iso-PGF2α. Simvastatin treatment significantly increased FMD value, decreased CRP and TNF-α concentration. After adjusting for PON1 genotypes, significantly higher PON1 activity was noted in the 192R allele carriers, in both groups. Regardless of genotype, PON1 activity remained stable after simvastatin treatment. Conclusions. The present study confirms a positive effect of simvastatin therapy on endothelial function and inflammatory markers in secondary prevention. Simvastatin treatment shows no effects on PON1 activity and 8-isoprostanes level. The effect of simvastatin therapy on PON1 activity is not modulated by Q192R and M55L polymorphisms.