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- W3030820383 abstract "Objective To investigate the protective effect of all-trans retinoic acid (ATRA) on injury of human immortalized hepatocytes (HHL-5 cells ) induced by sodium arsenite and possible mechanisms.Methods After cultured for 48 h,HHL-5 cells were divided into four groups:normal group,ATRA group,sodium arsenite group and ATRA + sodium arsenite group.HHL-5 cell viability was tested by using cell proliferation experiment (WST).Superoxide dismutase(SOD),glutathione peroxidase(GSH-Px) activity,malondialdehyde(MDA) content,and aspartate aminottransferase (AST) activity in each group were determined by biochemical method.The microstructure of HHL-5 cells in each group was observed under transmission electron microscopy.Results HHL-5 cell viability(0.57 ± 0.02) of sodium arsenite group was compared with that of normal group(0.70 ± 0.01 ),the difference was statistically significant(P ＜ 0.05).Levels of SOD,GSH-Px,MDA and AST[ (153.84 ± 2.35),(0.08 ±0.02)U/mg Prot,(4.15 ± 0.50)nmol/mg Prot,(265.43 ± 4.62) × 103 U/L] of sodium arsenite group were compared with that of normal group[(237.41 ± 18.30),(0.93 ± 0.02)U/mg Prot,(2.26 ± 0.40)nmol/mg Prot,(177 ± 9.85) ×103 U/L],and the difference was statistically significant (all P ＜ 0.05).HHL-5 cell viability (0.65 ± 0.04) of ATRA + sodium arsenite group was compared with that of sodium arsenite group, and the difference was statistically significant (P ＜ 0.05).Levels of SOD,GSH-Px,MDA and AST[ (286.85 ± 3.39),(0.56 ± 0.09)U/mg Prot,(3.36 ± 0.37)nmol/mg Prot, (220.02 ± 1.07) × 103 U/L] of ATRA+ sodium arsenite group were compared with that of sodium arsenite group,the difference was statistically significant(all P ＜ 0.05).Compared with normal group and ATRA group,the surface microvilli of HHL-5 cells of sodium arsenite group decreased,double-membrane structure was unclear,vacuolar degeneration was seen in the cytoplasm,and glycogen was aggregated.The damage level of ATRA + sodium arsenite group was decreased.Conclusions ATRA plays a protective role through increasing intracellular antioxidant enzyme activity of HHL-5 cells,removal or reduction of oxygen free radicals produced by sodium arsenite.Key words: Arsenites; Tretinoin; Antioxidants" @default.
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- W3030820383 date "2012-05-20" @default.
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- W3030820383 title "Protective effect of all-trans retinoic acid on injury of human immortalized hepatocytes induced by sodium arsenite" @default.
- W3030820383 doi "https://doi.org/10.3760/cma.j.issn.1000-4955.2012.03.007" @default.
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