Copyright © 1990 by the European Society of Cardiology.
© 1990 The European Society of Cardiology
The role of oxidized low density lipoprotein in the pathogenesis of atherosclerosis
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* Department of Geriatric Medicine, Faculty of Medicine, Kyoto University Japan
University of Texas Southwestern Medical Center at Dallas USA
Department of Internal Medicine, 3rd Division, Faculty of Medicine, Kyoto University Japan
Address for correspondence: Prof. Toru Kita, Department of Geriatric Medicine, Faculty of Medicine, Kyoto University. 54 Kawaracho Shogoin, Sakyeh-ku, Kyoto 606, Japan
Recently, it has been suggested that oxidized low density lipoprotein (LDL) plays an important role in atherogenesis by facilitating the accumulation of lipids in macrophages. In vitro studies from our laboratory have shown that oxidized LDL is recognized not only by a specific receptor, but also by a receptor which recognizes both oxidized LDL and acetyl LDL. Probucol, originally developed as an antioxidant, prevents the oxidative modification of LDL in vitro. Our recent studies show that probucol prevents the progression of atherosclerosis in homozygour WHHL rabbits in vivo without any changes in plasma LDL cholesterol levels.
These results strongly suggest that oxidative modification of LDL could occur in vivo and probucol could slow the progression of atherosclerosis, especially the foam cell-rich fatty streak lesions, without changing plasma cholesterol levels.
Key Words: WHHL rabbit atherosclerosis oxidized LDL receptor