alexa Experimental atherosclerosis and oxygen free radicals.


Journal of Clinical & Experimental Cardiology

Author(s): Prasad K, Kalra J

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Abstract Oxygen free radicals are known to produce cellular injury by peroxidation of phospholipids in the cell membrane. These free radicals might damage the endothelial cell and thus set the stage for atherosclerosis. The authors studied the effect of high-cholesterol diets on the genesis of atherosclerosis and lipid peroxidation products, malondialdehyde (MDA) in rabbits. The animals were divided into four groups each comprising 5 rabbits, on the basis of their diets. Group I, control diet; group II, cholesterol; group III, coconut oil; group IV, a mixture of cholesterol, coconut oil, and cholic acid. Rabbits were sacrificed five months after being on the respective diets. Blood samples were obtained for the measurements of total cholesterol, high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), very low density lipoprotein cholesterol (VLDL-C), triglycerides, and MDA at the end of the protocol. The aortas were removed from different animals for the identification of atherosclerotic plaques. Plaques were detected in all the animals in group II and group IV. The serum total cholesterol, LDL-C, and VLDL-C were significantly higher in animals of group II and IV than in those of group I. The values for serum total cholesterol, HDL-C, LDL-C, and VLDL-C in group III were not significantly different from those in group I. The blood MDA and serum triglycerides were also higher in animals of group II and IV than in those of group I. There were, however, no significant differences in these parameters in group III as compared with those in group I.(ABSTRACT TRUNCATED AT 250 WORDS)
This article was published in Angiology and referenced in Journal of Clinical & Experimental Cardiology

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