Abstract:Lipid peroxidation is believed to be an important mechanism of liver injury caused by some xenobiotics. However, it has been difficult to demonstrate and quantify this process in vivo. Moreover, little is known about the disposition of lipids oxidized in the liver. F2-isoprostanes are prostanoids produced by nonenzymatic free radical-catalyzed peroxidation of arachidonic acid esterified to phospholipids. Hydrolysis of F2-isoprostanes from phospholipids by phospholipases yields free F2-isoprostanes. Excretion o… Show more
MRP2 mediates the transport of PGE(2) and its breakdown products. The biliary excretion of PGE(2) via MRP2 may contribute to rapid elimination of the prostaglandin but might also serve to relay prostaglandin signalling to the biliary tree.
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