Journal
INTERNATIONAL JOURNAL OF MEDICINAL MUSHROOMS
Volume 17, Issue 11, Pages 1069-1076Publisher
BEGELL HOUSE INC
DOI: 10.1615/IntJMedMushrooms.v17.i11.70
Keywords
medicinal mushrooms; Inonotus obliquus; Chaga mushroom; hepatocyte; tert-butyl hydroperoxide; primary culture; liver injury
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We examined the hepatoprotective activity of Inonotus obliquus water extract (IO-W) against tertbutyl hydroperoxide (t-BHP)-induced oxidative liver injury in the primary cultured rat hepatocyte. The 50% radical scavenging concentrations (SC(50)s) of IO-W for radical-scavenging activity against 2,2'-azino-bis-(3-ethylbenzothiazoline-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<0.05) protected the cells from t-BHP-induced cytotoxic injury even at a low concentration of IO-W (10 mu g/mL). The cellular leakage of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and lactate dehydrogenase (LDH), as well as malondialdehyde (MDA) formation caused by t-BHP were significantly (p<0.05) suppressed by IO-W pretreatment (>100 mu g/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.
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