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Evidence for lipid peroxidation in atherosclerosis
J J Piotrowski1, G C Hunter, C D Eskelson
1Department of Surgery, University of Arizona Health Sciences Center, Tucson.
Life Sciences
|January 1, 1990
Summary
Lipid peroxidation, the oxidation of lipids, is linked to higher cholesterol in atherosclerotic plaque. Further research is needed to determine the exact role of lipid peroxides in atherosclerosis development.
Area of Science:
- Cardiovascular Science
- Biochemistry
Background:
- Lipid peroxidation is implicated in the development of atherosclerotic plaque.
- Atherosclerosis involves the accumulation of lipids and oxidative stress within artery walls.
Purpose of the Study:
- To investigate the association between lipid peroxidation and lipid content in human atherosclerotic tissues.
- To quantify lipid peroxide levels in normal and atherosclerotic human arteries and vein grafts.
Main Methods:
- Human aortic tissue, coronary arteries, and vein grafts were collected and snap-frozen.
- Lipids were extracted using Folch reagent and assayed for cholesterol, phospholipid, and triglyceride content.
- Lipid peroxide complexes were measured fluorometrically in tissue samples.
Main Results:
- Atherosclerotic plaque showed significantly higher cholesterol levels compared to normal tissue (p < 0.01).
- Elevated lipid peroxide fluorochromes were observed in all atherosclerotic tissues (p < 0.01), particularly in saphenous vein grafts and occlusive aortic disease.
- Lipid peroxidation and lipid accumulation were found in close association within atherosclerotic plaque.
Conclusions:
- Lipid accumulation and peroxidation are closely associated in atherosclerotic plaque.
- The precise role of lipid peroxides in the pathogenesis of atherosclerosis requires further investigation.