Hepatoprotective effects of an active part from Artemisia sacrorum Ledeb. against acetaminophen-induced toxicity in mice

Aims of studyAlthough Artemisia sacrorum Ledeb. (Compositae) has long been used as one kind of oriental folk medicine to treat some liver diseases, the underlying mechanism(s) by which these effects are induced remains to be defined. This study was designed to investigate the hepatoprotective effects of 50% ethanol eluate precipitation of Artemisia sacrorum Ledeb. (EEP) on acetaminophen (APAP)-induced toxicity in mice.Materials and methodsThe levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and tumor necrosis factor-α (TNF-α) levels in mouse sera, and glutathione (GSH), malondialdehyde (MDA) in mouse liver tissues were measured. In addition, apoptosis and necrosis were evaluated by liver histopathological analysis and DNA laddering. Moreover, caspase-3 and -8 protein expressions in mouse livers were observed by Western blot analysis.ResultsPretreated with EEP prior to the administration of APAP significantly prevented the increases of AST, ALT, and TNF-α levels in sera, and suppressed the GSH depletion, MDA accumulation in liver tissues markedly. In addition, EEP prevented APAP-induced apoptosis and necrosis, as indicated by liver histopathological analysis, immunohistochemical analysis, and DNA laddering. Furthermore, according to the results from Western blot analysis, EEP decreased APAP-induced caspase-3 and caspase-8 protein expressions in mouse livers markedly.ConclusionAll these results suggest that the protective effects of EEP against APAP-induced liver injury may involve mechanisms associated with its inhibitive effects of lipid peroxidation and the down-regulation of TNF-α mediated apoptosis. In a word, EEP could be a valuable candidate for further development for prevention and treatment of hepatic injury.

Pretreated with 50% ethanol eluate precipitation of Artemisia sacrorum Ledeb. (EEP) prior to the administration of APAP significantly prevented the increases of AST, ALT, and TNF-α levels in sera, and suppressed the GSH depletion, MDA accumulation in liver tissues markedly. In addition, EEP prevented APAP-induced apoptosis and necrosis, as indicated by liver histopathological analysis, immunohistochemical analysis, and DNA laddering. Furthermore, according to the results from Western blot analysis, EEP decreased APAP-induced caspase-3 and -8 protein expressions in mouse livers markedly.It is suggested that the protective effects of EEP against APAP-induced liver injury may involve mechanisms associated with its inhibitive effects of lipid peroxidation and the down-regulation of TNF-α mediated apoptosis.Figure optionsDownload as PowerPoint slide