title: Prevention of hepatic oxidative injury by Xiao-Chen-Chi-Tang in mice.
abstract: The three purgative Cheng-Chi-Tang decoctions (CCTDs) including Ta-Cheng-Chi-Tang (TCCT), Xiao-Chen-Chi-Tang (XCCT), and Tiao-Wei-Chen-Chi-Tang (TWCCT) are used for treating gastrointestinal disorders, including liver diseases in traditional Chinese medicine. However, the underlying mechanisms as liver disease remedies are far from fully clarified. The objective of the study is to investigate and compare the antioxidant activity of the three purgative CCTDs in order to delineate their hepatic protective potential and mechanism. Antioxidant activity measured with the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging test indicated XCCT as the most potent preparation (IC(50) 8.94 microg/ml). In tert-butylhydroperoxide (TBH, 50mM)-induced lipid peroxidation in ICR mice liver homogenates, XCCT also showed stronger and dose-dependent inhibitory activity against TBH-induced malondialdehyde (MDA, a marker of lipid peroxidation) production (IC(50) 53.66 microg/ml). In addition, XCCT showed dose-dependent protective effect against TBH-induced cytotoxicity in normal human Chung liver cells Furthermore, in carbon tetrachloride (CCl(4))-induced acute liver injury model, mice pretreated with 0.2g/kg and 0.4 g/kg of XCCT extracts showed a decrease of 59.8 and 43.1% in serum glutamic oxaloactetic transaminase (GOT) level, 51.4 and 52% in glutamic pyruvate transaminase (GPT) level, along with a reduction of 31 and 15% in MDA level, respectively, similar to the effects exerted by silymarin. XCCT pretreated mice also showed milder necrotic changes in the microscopic picture of the liver. The results suggest that XCCT has significant antioxidant activity and hepatic protection potential.
authors.affiliation: School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wu-Xing Street, Taipei 110, Taiwan, ROC.
authors.forename: Sung-Hui
authors.initials: SH
authors.lastname: Tseng
authors.forename: Ting-Yi
authors.initials: TY
authors.lastname: Chien
authors.forename: Chih-Fu
authors.initials: CF
authors.lastname: Tzeng
authors.forename: Yun-Ho
authors.initials: YH
authors.lastname: Lin
authors.forename: Chih-Hsiung
authors.initials: CH
authors.lastname: Wu
authors.forename: Ching-Chiung
authors.initials: CC
authors.lastname: Wang
mesh_terms: D000410:Alanine Transaminase / Q000097:blood; D000818:Animals; D000975:Antioxidants / Q000494:pharmacology* / Q000627:therapeutic use; D001219:Aspartate Aminotransferases / Q000097:blood; D002251:Carbon Tetrachloride; D002400:Cathartics / Q000494:pharmacology*; D002460:Cell Line; D056486:Chemical and Drug Induced Liver Injury; D004305:Dose-Response Relationship, Drug; D016166:Free Radical Scavengers / Q000494:pharmacology; D022781:Hepatocytes / Q000187:drug effects; D029001:Herbal Medicine; D006801:Humans; D020128:Inhibitory Concentration 50; D015227:Lipid Peroxidation / Q000187:drug effects; D008099:Liver / Q000187:drug effects* / Q000293:injuries; D008107:Liver Diseases / Q000517:prevention & control*; D008297:Male; D008315:Malondialdehyde / Q000097:blood; D051379:Mice; D008813:Mice, Inbred ICR; D018384:Oxidative Stress / Q000187:drug effects*; D012838:Silymarin / Q000494:pharmacology; D020122:tert-Butylhydroperoxide / Q000633:toxicity
chemical_list: D000975:Antioxidants; D002400:Cathartics; D016166:Free Radical Scavengers; D012838:Silymarin; D008315:Malondialdehyde; D020122:tert-Butylhydroperoxide; D002251:Carbon Tetrachloride; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase