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Journal of Obesity
Volume 2013 (2013), Article ID 729515, 10 pages
http://dx.doi.org/10.1155/2013/729515
Clinical Study

The Impact of Rapid Weight Loss on Oxidative Stress Markers and the Expression of the Metabolic Syndrome in Obese Individuals

1Centre for Preventive Cardiology, 3rd Department of Internal Medicine, General Teaching Hospital and Charles University in Prague, U Nemocnice 2, 128 08 Prague 2, Czech Republic
2Center for Cardiovascular Disease Prevention, Methodist DeBakey Heart Center, and Section of Cardiovascular Research, Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA

Received 27 August 2013; Revised 28 October 2013; Accepted 18 November 2013

Academic Editor: David Allison

Copyright © 2013 Eva Tumova et al. 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

Objective. Obesity is linked with a state of increased oxidative stress, which plays an important role in the etiology of atherosclerosis and type 2 diabetes mellitus. The aim of our study was to evaluate the effect of rapid weight loss on oxidative stress markers in obese individuals with metabolic syndrome (MetS). Design and Methods. We measured oxidative stress markers in 40 obese subjects with metabolic syndrome (MetS+), 40 obese subjects without metabolic syndrome (MetS−), and 20 lean controls (LC) at baseline and after three months of very low caloric diet. Results. Oxidized low density lipoprotein (ox-LDL) levels decreased by 12% in MetS+ subjects, associated with a reduction in total cholesterol (TC), even after adjustment for age and sex. Lipoprotein associated phospholipase A2 (Lp-PLA2) activity decreased by 4.7% in MetS+ subjects, associated with a drop in LDL-cholesterol (LDL-C), TC, and insulin levels. Multivariate logistic regression analysis showed that a model including ox-LDL, LpPLA2 activity, and myeloperoxidase (MPO) improved prediction of MetS status among obese individuals compared to each oxidative stress marker alone. Conclusions. Oxidative stress markers were predictive of MetS in obese subjects, suggesting a higher oxidative stress. Rapid weight loss resulted in a decline in oxidative stress markers, especially in MetS+ patients.