Concentrations of plasma triglycerides, cholesterol, total lipids and lipid peroxides in patients with atherosclerotic lesions of peripheral arteries, who were divided into groups according to the extent and intensity of the lesions, were estimated, as well as lipid peroxide levels in the arterial wall. Statistically highly significant increases of the estimated compounds were found in all groups in comparison with the controls. The existence of a positive correlation between the lipid peroxide concentration and other investigated components in plasma and between the lipid peroxide level in plasma and in the arterial wall was found. Possible mechanisms for lipid peroxide involvement in the process of originating atherosclerotic lesions are discussed.
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