Oxidative stress and endothelial dysfunction: clinical evidence and therapeutic implications
- PMID: 24373981
- DOI: 10.1016/j.tcm.2013.12.001
Oxidative stress and endothelial dysfunction: clinical evidence and therapeutic implications
Abstract
An imbalance of nitric oxide (NO) and reactive oxygen species (ROS), so-called "oxidative stress," may promote endothelial dysfunction, leading to cardiovascular complications. Activation of nicotinamide-adenine dinucleotide phosphate oxidase, xanthine oxidase, cyclooxygenase, and mitochondrial electron transport, inactivation of the antioxidant system, and uncoupling of endothelial NO synthase lead to oxidative stress along with an increase in ROS production and decrease in ROS degradation. Although experimental studies, both in vitro and in vivo, have shown a critical role of oxidative stress in endothelial dysfunction under the condition of excessive oxidative stress, there is little information on whether oxidative stress is really involved in endothelial function in humans. In a clinical setting, we showed an association between oxidative stress and endothelial function, especially in patients with renovascular hypertension as a model of increased oxidative stress and in patients with Gilbert syndrome as a model of decreased oxidative stress, through an increase in the antioxidant property of unconjugated bilirubin.
Copyright © 2014 Elsevier Inc. All rights reserved.
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