We evaluated antioxidant state of 62 patients with coronary heart disease and 47 patients with obliterating atherosclerosis of lower extremities by peroxide-depend chemiluminescence and inhibition of azo-initiated chemiluminescence and hydrogen peroxide-hemoglobin-luminol chemiluminescence system. The flash amplitude of peroxide-dependent chemiluminescence in the plasma from patients was 32% below the control. Antioxidant activity of the plasma from patients was higher than in healthy individuals by 33 and 27% depending on the type of free radical-generating systems. The increase in antioxidant activity was most pronounced in patients with combined pathology: coronary heart disease complicated by obliterating atherosclerosis. These results explain the decrease in peroxide-dependent chemiluminescence of the plasma and whole blood in patients with atherosclerosis compared to that in healthy individuals.
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