Antioxidant activity of medicinal herb Rhodococcum vitis-idaea on galactosamine-induced liver injury in rats.
Aim of the study was to evaluate in vivo antioxidant action of medicinal herb Rhodococcum vitis-idaea (Rh.v) on galactosamine (GalN)-induced rat liver toxicity. The results showed that the hepatotoxicity and oxidative stress induced by GalN (700 mg/kg, s.c.) after 24 h evidenced by an increase in serum alanine aminotransferase and glutathione (GSH) S-transferase activities, and lipid peroxidation in liver homogenate were significantly inhibited, when 10 times diluted Rh.v. extract (5 ml/kg, i.p.) was given to rats 12 and 1 h before GalN treatment demonstrating that the extract of Rh.v is a potent antioxidant and protective against GalN-induced hepatotoxicity. The main antioxidant compound of the herb water extract used in the experiment was determined as arbutin, which possess 8% of dry weight of the herb. The electron spin resonance (ESR) spectrometer analysis revealed that the arbutin isolated from Rh.v exhibited strong superoxide and hydroxyl radical scavenging ability.
Myagmar
B E
BE
Faculty, of Medicine, Laboratory of Physiology and Pharmacology, School of Health Sciences, University of the Ryukyus, Nishihara, Okinawa 903-0215, Japan.
Shinno
E
E
Ichiba
T
T
Aniya
Y
Y
D000818:Animals; D000975:Antioxidants / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D056486:Chemical and Drug Induced Liver Injury / Q000517:prevention & control*; D004305:Dose-Response Relationship, Drug; D029791:Ericaceae; D005688:Galactosamine; D008297:Male; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D018515:Plant Leaves; D020011:Protective Agents / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D051381:Rats; D017208:Rats, Wistar
D000975:Antioxidants; D010936:Plant Extracts; D020011:Protective Agents; D005688:Galactosamine