Hepatoprotective Activity of Water Extracts from Chaga Medicinal Mushroom, Inonotus obliquus (Higher Basidiomycetes) Against Tert-Butyl Hydroperoxide-Induced Oxidative Liver Injury in Primary Cultured Rat Hepatocytes.

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Abstract

We examined the hepatoprotective activity of Inonotus obliquus water extract (IO-W) against tert-butyl hydroperoxide (t-BHP)-induced oxidative liver injury in the primary cultured rat hepatocyte. The 50% radical scavenging concentrations (SC50s) of IO-W for radical-scavenging activity against 2,2'-azino-bis-(3-ethylbenzothi- azoline-6-sulfonic acid) (ABTS) and 1,1-diphenyl-2-picryl-hydrazyl (DPPH) were 5.19 mg/mL and 0.39 mg/mL, respectively. IO-W pretreatment to the primary cultured hepatocytes significantly (p 100 µg/ mL). In conclusion, this study demonstrates that IO-W exhibited hepatoprotective activity against t-BHP-induced oxidative liver injury in the primary cultured hepatocyte probably via its abilities of quenching free radicals, inhibiting the leakage of ALT, AST, and LDH, and decreasing MDA formation.