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This study was conducted to evaluate the hepatoprotective effect of polysaccharides from Pleurotus ostreatus (POP) on carbon tetrachloride-induced acute liver injury (ALI) in rats. The hepatoprotective effect of POP against ALI was reflected by the decreased alanine transaminase and aspartate transaminase levels in blood, increased superoxide dismutase, catalase, and glutathione peroxidase levels, and decreased malondialdehyde levels in blood and liver. TUNEL and immunohistochemistry analyses showed that TUNEL apoptosis cell rate and Bax, cytochrome C, caspase-3, caspase-9, and apoptosis-inducing factor expression levels were obviously decreased, whereas Bcl-2 expression levels obviously increased after POP treatment. A total of 11 metabolites belonging to energy, amino acid, fatty acid, and gut bacteria metabolism were identified as biomarkers by using metabolite analysis of liver homogenate based on ultra-performance liquid chromatography–tandem mass spectrometry. POP exhibited hepatoprotective effects on CCl 4 -induced ALI, and the underlying mechanism is correlated with antioxidants that regulate metabolic pathway disorders and alleviate liver mitochondria apoptosis. • POP exhibited hepatoprotective effect against acute liver injury. • The hepatoprotective effects were correlated with antioxidants • The hepatoprotective effects were correlated with anti-apoptosis. • The hepatoprotective effects were correlated with regulate metabolism disorders. [ABSTRACT FROM AUTHOR]

This study was performed to evaluate the hepatoprotective effect of FVP on carbon tetrachloride induced acute liver injury rats. Transaminase levels, antioxidant effect and histopathology were used to assess the recovery of FVP treated acute liver injury rats. Metabolomic analysis of liver homogenate based on GC–MS was used to obtain a global understanding of metabolic change between acute liver injury model rats and FVP-treated rats in order to assess the underlying mechanisms. Multivariate statistical approaches such as principal component analysis and orthogonal projection to latent structure square-discriminant analysis revealed distinctions among the normal, liver injury model, and FVP groups. The results demonstrated that FVP had a hepatoprotective effect on acute liver injury by decreasing AST and ALT levels, enhancing antioxidant effect and attenuating pathological injury. Sixteen metabolites were identified as biomarkers. These biomarkers belonged to glyoxylate and dicarboxylate metabolism, galactose metabolism, glycine, serine and threonine metabolism, glycerolipid metabolism, alanine, aspartate and glutamate metabolism, TCA cycle, pyruvate metabolism, arginine and proline metabolism. [ABSTRACT FROM AUTHOR]