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À propos de : Oxidation of low-density lipoproteins by rat mesangial cells and the interaction of oxidized low-density lipoproteins with rat mesangial cells in vitro        

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  • Oxidation of low-density lipoproteins by rat mesangial cells and the interaction of oxidized low-density lipoproteins with rat mesangial cells in vitro
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  • Glomerulosclerosis and atherosclerosis share common pathobiological mechanisms. Experiments carried out in vitro over the past decade using cells thought to be involved in the atherosclerotic process such as endothelial cells, smooth muscle cells, and monocyte/macrophages have shown that postsecretory modifications such as oxidation increase the atherogenicity of LDL. Animal experiments employing antioxidant therapy have also been shown to slow the progression of atherosclerotic lesions. We set out to investigate the interactions between oxidized LDL (oxLDL) and rat mesangial cells (RMC) that might be of importance in the glomerulosclerotic process. Our results show that RMC have the ability to oxidize LDL, that oxLDL binding was 2-3-fold greater than native LDL (nLDL), and that oxLDL was more cytotoxic to these cells than nLDL. We speculate that cell-mediated oxidation of LDL in vivo may play a role in the progression of the glomerulosclerotic process.
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  • 8.6.512
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