Table of Contents
ISRN Nutrition
Volume 2014, Article ID 405867, 7 pages
http://dx.doi.org/10.1155/2014/405867
Clinical Study

Effect of Fresh Orange Juice Intake on Physiological Characteristics in Healthy Volunteers

1Isfahan Cardiovascular Research Center, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan 8187698191, Iran
2Physiology Research Center, Isfahan University of Medical Sciences, Isfahan 7346181746, Iran
3Department of Cardiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan 7346181746, Iran
4Social Health Determinants Research Center and Department of Epidemiology and Biostatistics, School of Health, Shahrekord University of Medical Sciences, Shahrekord 8815713361, Iran
5Department of Pharmacology & Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, Canada V6T 1Z3

Received 8 December 2013; Accepted 12 January 2014; Published 4 March 2014

Academic Editors: A. Shaish and P. V. Torres Durán

Copyright © 2014 Sedigheh Asgary 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

Background. Impaired endothelial function is a predictor of cardiovascular events. Orange juice (OJ) is rich in dietary flavonoids and could inhibit oxidative stress and inflammatory responses. We examined the effects of commercial (COJ) and fresh orange juice (FOJ) on endothelial function and physiological characteristics in healthy humans. Materials and Methods. Twenty-two healthy volunteers years were enrolled in a single blind randomized crossover controlled trial. The two groups consumed either COJ for the first 4 weeks and then FOJ (CFOJ, 4 weeks), or FOJ for the first 4 weeks and then COJ (FCOJ, 4 weeks). We assessed endothelial function by measuring flow-mediated dilation, serum concentrations of lipids, apolipoproteins A and B (apo A-1 and apo B), and inflammatory markers such as vascular endothelial adhesion molecule 1 (VCAM-1), E-selectin, high-sensitivity C-reactive protein (hs-CRP), and interleukin-6. Results. Consumption of both juices decreased VCAM, hs-CRP, and E-selectin but increased apo A-1. A decline in LDL occurred in the FOJ group. There were no differences between the characteristics of two groups, with the exception of apo A-1 levels that were increased with both forms of OJ. The largest variations occurred with hs-CRP, VCAM in both groups. Conclusion. Consumption of COJ and FOJ produced beneficial effects on the physiological characteristics of healthy volunteers. Although these results could encourage the consumption of OJ, intervention studies are needed to determine the long-term effects of these types of OJ on metabolic and cardiovascular endpoints.