Oxidized Lipoproteins Degrade the Endothelial Surface Layer
نویسندگان
چکیده
منابع مشابه
Oxidized lipoproteins degrade the endothelial surface layer : implications for platelet-endothelial cell adhesion.
BACKGROUND Flowing erythrocytes and platelets are separated from the luminal endothelial cell (EC) surface by a 0.5-microm-wide space named the endothelial surface layer. We hypothesized that the disruption of the endothelial surface layer by oxidized low-density lipoproteins (Ox-LDL) contributes to atherogenic increases in vascular wall adhesiveness. METHODS AND RESULTS The hamster cremaster...
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Endothelial cell derived relaxing factor (EDRF) mediated relaxation of blood vessels is impaired in vessels exposed to lipoproteins in vitro and in arteries of hyperlipidemic humans and animals. To investigate the mechanism by which lipoproteins impair the effects of EDRF, which is likely nitric oxide (NO) or a related molecule, we have bioassayed EDRF/NO activity by measuring its ability to in...
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The direct vasoactive effects of native and oxidatively modified low density lipoproteins as well as their effects on endothelium-dependent relaxations to 5-hydroxytryptamine were studied in isolated rings of pig right coronary artery. Slowly developing contractions were caused by native low density lipoproteins (100 gg protein/ml). The contractions were more pronounced in the absence than in t...
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The strong inverse relationship between HDL level and risk for coronary artery disease has been attributed to different mechanisms. More than 30 years ago, Glomset1 proposed that HDL mediates the transfer of cholesterol from peripheral tissues to the liver, where the sterol and its oxygenated products are excreted into the bile. Subsequent studies demonstrated that HDL accepts cholesterol from ...
متن کاملEndothelial responses to oxidized lipoproteins determine genetic susceptibility to atherosclerosis in mice.
BACKGROUND Oxidized LDL has been found within the subendothelial space, and it exhibits numerous atherogenic properties, including induction of inflammatory genes. We examined the possibility that variations in endothelial response to minimally modified LDL (MM-LDL) constitute one of the genetic components in atherosclerosis. METHODS AND RESULTS By a novel explant technique, endothelial cells...
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ژورنال
عنوان ژورنال: Circulation
سال: 2000
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.101.13.1500