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Oxidative Medicine and Cellular Longevity
Volume 2015, Article ID 341926, 6 pages
http://dx.doi.org/10.1155/2015/341926
Research Article

Xanthine Oxidoreductase Reference Values in Platelet-Poor Plasma and Platelets in Healthy Volunteers

Department of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University of Szczecin, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland

Received 5 November 2014; Revised 18 December 2014; Accepted 24 December 2014

Academic Editor: Angel Catalá

Copyright © 2015 Elżbieta Cecerska-Heryć 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

Introduction. Xanthine oxidoreductase (XOR) is an enzyme belonging to the class of hydroxylases. XOR is stated, inter alia, in the kidneys, liver, and small intestine as well as in leukocytes and platelets and endothelial cells of capillaries. Its main role is to participate in the conversion of hypoxanthine to xanthine and the uric acid. It occurs in two isoforms: dehydrogenase (XD) and oxidase (XO), which is considered one of the sources of reactive oxygen species. Aim of the Study. Determination of reference values of xanthine oxidoreductase activity in PPP and platelets. Materials and Methods. Study group consisted of 70 healthy volunteers. The isoform activities of xanthine oxidoreductase were determined by kinetic spectrophotometry. Results. A statistically significant difference between the activity of the XOR in PPP and platelets (). The highest activity of XO was found in both PPP and blood platelets. Significant differences between the activity of the various isoforms in PPP () and platelets () were also found. Conclusions. The healthy volunteers showed the highest activity XO (prooxidant) and the lowest XD (antioxidant), which indicates a slight oxidative stress and confirmed physiological effects of XOR.