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  • Title: Resistin induces lipolysis and re-esterification of triacylglycerol stores, and increases cholesteryl ester deposition, in human macrophages.
    Author: Rae C, Robertson SA, Taylor JM, Graham A.
    Journal: FEBS Lett; 2007 Oct 16; 581(25):4877-83. PubMed ID: 17889853.
    Abstract:
    Human resistin, found within atheroma, exerts inflammatory, angiogenic and proliferative effects in vascular cells and may predict coronary events. Here, we investigate mechanisms by which resistin contributes to macrophage 'foam cell' formation. Increases in macrophage (THP-1) cholesteryl ester mass, in the presence or absence of oxidized LDL, were not explained by altered cholesterol efflux. Instead, resistin enhanced fractional turnover of the endogenous triacylglycerol pool, increased uptake and decreased oxidation of exogenous fatty acids, and decreased phosphorylation of acetyl CoA carboxylase, all factors increasing the availability of fatty acyl CoA substrate for acyl CoA: cholesterol acyltransferase-1, thereby enhancing macrophage cholesteryl ester deposition.
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