Abstract
Oxidative stress plays a key role in the pathogenesis and development of atherosclerosis. AimTo evaluate the relationship between a novel oxidative stress index (reflecting both oxidative and anti-oxidant counterparts) with traditional cardiovascular risk factors and C-reactive protein (CRP) in coronary artery disease (CAD). Methods100 angiographically proven CAD and 70 control subjects (mean age: 65±10 years, 110 males), underwent a global cardiovascular risk assessment and serum CRP and oxidative stress estimation. The Oxidative-INDEX was calculated after automated evaluation of serum hydroperoxides and total anti-oxidant capacity (D-ROM and OXY-adsorbent Test, Diacron, Italy) subtracting the OXY standardized variable from the ROM standardized variable. ResultsThe Oxidative-INDEX was higher in CAD with respect to control subjects (p<0.001). A stepwise elevation in the Oxidative-INDEX levels was found depending on the number of affected vessels (p<0.001). Oxidative stress was elevated according to the presence of diabetes (p<0.001), smoking habit (p<0.01), and hypercholesterolemia (p<0.05). Oxidative-INDEX significantly correlated with aging (p≤0.05) and CRP (p<0.001). The Oxidative-INDEX increased with the number of cardiovascular risk factors (p<0.001).After adjustment for traditional CV risk factors, the multivariate logistic regression analysis indicated the Oxidative-INDEX concentration as an independent factor for CAD (odds ratio=1.4, confidence intervals=1.1–1.9, p<0.05). ConclusionOxidative stress represents a shared molecular pathway in atherosclerotic-related conditions, and its estimation by the automated Oxidative-INDEX could represent a valuable tool and a promising target in the prevention, diagnosis and treatment of CAD in the clinical setting.
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