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[Components of human placental extract and its protective effect to rat from D-GalN induced acute liver injury].

Objective: To evaluate the effect of human placental extracts (HPE) on the protection from acute liver injury (ALI) induced by D-GalN and analyze the components of HPE. Methods: (1)Fourty male mice were randomly divided into five groups (Blank, Model, MgIG, HPE and HPE+ MgIG) for the ALI model and treatments.The serum alanine aminotransferase (ALT) and aspartate transaminase (AST) were determined by biochemical assays.Nitric monoxide (NO), malondialdehyde (MDA), superoxide dismutase (SOD), total antioxidant capacity (T-AOC) in serum and hepatic tissue were detected by assay kits.The extent of liver damage was evaluated by histological examination.(2)Relative molecular mass of HPE was determined by SDS-PAGE.(3) Component identification was performed by using LCMS-TOF.(4)Selected functional molecules in HPE were detected by protein array. Results: (1) A lower level of NO and MDA and a higher SOD and T-AOC were observed in rats treated with HPE compared to the non-treated rats in an acute liver failure disease model.(2) The size of HPE was about 1 200-4 600 by electrophores.(3) 7 peaks of HPE were identified, including uracil, hypoxanthine, tyrosine, phenylalanine, tryptophan, xanthine and thymine.(4) Comparable high concentrations of TGF-β, IGF-1, IL-9, IL-29 and TNF-α of HPE were revealed by protein array. Conclusions: (1) HPE protects rat from liver damage induced by D-GalN. (2) HPE contains Uracil, hypoxanthine, xanthine, thymine, and functional proteins as TGF-β, IGF-1, IL-9, IL-29 and TNF-α.

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