Protective effect of the Aralia continentalis root extract against carbon tetrachloride-induced hepatotoxicity in mice.
The root of Aralia continentalis Kitagawa has been used in traditional Korean medicine to relieve pain and to treat inflammation. The purpose of this study was to investigate the protective effects of the extract of A. continentalis roots (AC) against hepatotoxicity induced by carbon tetrachloride (CCl4) and the mechanism of its hepatoprotective effect. In mice, pretreatment with AC prior to the administration of CCl4 significantly prevented the increased serum enzymatic activity of ALT and AST as well as the formation of hepatic malondialdehyde. Histopathological evaluation of the livers also revealed that AC reduced the incidence of liver lesions induced by CCl4. In addition, pretreatment with AC significantly prevented both the depletion of reduced glutathione (GSH) content and the decrease in glutathione-S-transferase (GST) activity in the liver of CCl4-intoxicated mice. Hepatic GSH levels and GST activity were increased by treatment with AC alone. Heme oxygenase-1 (HO-1) is known to be induced by oxidative stress and to confer protection against oxidative tissue injuries. Interestingly, AC markedly upregulated hepatic HO-1 expression in CCl4-treated mice, which might provide anti-oxidative activity in the liver. These results indicate that AC plays a critical protective role in CCl4-induced acute liver injury by promoting anti-oxidative protein expression.
Hwang
Yong Pil
YP
BK 21 Project Team, Department of Pharmacy, College of Pharmacy, Research Center for Proteineous Materials, Chosun University, 375 Seosuk-dong, Gwangju 501-759, Republic of Korea.
Choi
Jae Ho
JH
Jeong
Hye Gwang
HG
D000818:Animals; D027983:Aralia / Q000737:chemistry*; D002252:Carbon Tetrachloride Poisoning; D056486:Chemical and Drug Induced Liver Injury / Q000517:prevention & control*; D004305:Dose-Response Relationship, Drug; D005978:Glutathione; D005982:Glutathione Transferase / Q000378:metabolism; D015227:Lipid Peroxidation; D008099:Liver / Q000378:metabolism; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D018517:Plant Roots / Q000737:chemistry*
D010936:Plant Extracts; D005982:Glutathione Transferase; D005978:Glutathione