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The catabolism and structure of high-density lipoproteins (HDL) may be the determining factor of their atheroprotective properties. To better understand the role of the kidney in HDL catabolism, here we characterized HDL subclasses and the catabolic rates of apo A-I in a rabbit model of proteinuria. Proteinuria was induced by intravenous administration of doxorubicin in New Zealand white rabbits (...
Paraoxonase-1 (PON1) is suggested to have a role in the antioxidant activity of high-density lipoprotein (HDL). PON1 activity levels are strongly genetically determined by the rs662 polymorphism (PON1 Q192R). To clarify the role of PON1 in lipoprotein oxidation at the population level, we examined the relations between PON1 activity, the rs662 polymorphism and oxidized lipoprotein lipids in young...
Human PON1 is a HDL-associated lipolactonase capable of preventing LDL and cell membrane oxidation and is therefore considered to be atheroprotective. PON1 contributes to the antioxidative function of HDL and reductions in HDL-PON1 activity, prevalent in a wide variety of diseases with an inflammatory component, are believed to lead to dysfunctional HDL which can promote inflammation and atherosclerosis...
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