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- W69175077 abstract "Enhanced platelet reactivity is critical to the pathophysiology of occlusive arterial thrombotic disease. Despite the strong clinical associations between hyperlipidemia, a major risk factor for atherosclerosis, and a pro-thrombotic phenotype, the mechanisms responsible for enhanced platelet reactivity during hyperlipidemia remain unknown. Pro-atherosclerotic lipid abnormalities such as hypercholesterolemia are associated with both enhanced oxidant stress and generation of biologically active oxidized lipids, including potential ligands for the scavenger receptor CD36, a major platelet surface glycoprotein. Using multiple murine in vivo thrombosis models we now demonstrate that hyperlipidemic atherosclerosis prone mice (apolipoprotein E-deficient or LDL receptor-deficient) form occlusive intravascular thrombi faster than wildtype mice, and that genetic deletion of CD36 protects mice from hyperlipidemia-associated enhanced platelet reactivity and accompanying pro-thrombotic phenotype. Structurally defined oxidized choline glycerophospholipid molecular species that serve as endogenous high affinity ligands for CD36 are shown to : be markedly increased in plasma of hyperlipidemic mice; be elevated in plasma of subjects with low HDL levels; and to promote platelet activation and alpha-granule release via CD36 at pathophysiological levels. These studies thus demonstrate that platelet CD36 interactions with specific endogenous oxidized lipids play a heretofore unrecognized role in the well-known clinical associations between hyperlipidemia, oxidant stress and a prothrombotic phenotype." @default.
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- W69175077 date "2007-10-16" @default.
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- W69175077 title "Abstract 522: Specific Oxidized Phospholipids Modulate Platelet Reactivity In Vivo During Hyperlipidemia Via Cd36: A Mechanism Linking Hyperlipidemia, Oxidant Stress And A Pro-thrombotic Phenotype" @default.
- W69175077 doi "https://doi.org/10.1161/circ.116.suppl_16.ii_92" @default.
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