title: Protective effect of glycoprotein isolated from Ulmus davidiana Nakai on carbon tetrachloride-induced mouse liver injury.
abstract: This study was carried out to evaluate the hepatoprotective activity of glycoprotein isolated from the stems of Ulmus davidiana Nakai (UDN), which has been used as an anti-inflammatory agent in folk medicine. We evaluated lipid peroxidation in glucose/glucose oxidase (G/GO)-induced BNL CL.2 cells and measured thiobarbituric acid reactive substances (TBARS), lactate dehydrogenase (LDH), nitric oxide (NO), antioxidant enzyme (superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx)), activity of cytotoxic-related signals (hepatic cytochrome c, nuclear factor-kappa B (NF-kappaB) and activator protein-1 (AP-1)) and levels of plasma lipids (triglyceride (TG) and total cholesterol (TC)) in carbon tetrachloride (CCl(4,) 1.0 mL kg(-1))-induced A/J mouse. The results in G/GO-induced BNL CL.2 cells showed that UDN glycoprotein had a dose-dependent inhibitory effect on lipid peroxidation. The results in carbon tetrachloride (CCl(4,) 1.0 mL kg(-1))-induced A/J mouse indicated that treatment with UDN glycoprotein (40 mg kg -1) lowered LDH activity and TBARS formation, and increased NO production and antioxidant enzymes activity, compared with control. Also, our finding from CCl(4)-treated mice after pretreatment with UDN glycoprotein demonstrated that the activity of cytotoxic-related signals decreased but the levels of plasma lipids increased, compared with CCl(4) treatment alone. Here, we speculate that UDN glycoprotein has a protective character to CCl(4)-induced mouse liver injury.
authors.affiliation: Molecular Biochemistry Laboratory, Institute of Biotechnology, Chonnam National University, Kwangju, 300 Yongbong-Dong, 500-757, South Korea.
authors.forename: Sei-Jung
authors.initials: SJ
authors.lastname: Lee
authors.forename: Phil-Sun
authors.initials: PS
authors.lastname: Oh
authors.forename: Jeong-Hyeon
authors.initials: JH
authors.lastname: Ko
authors.forename: Kwang
authors.initials: K
authors.lastname: Lim
authors.forename: Kye-Taek
authors.initials: KT
authors.lastname: Lim
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D002251:Carbon Tetrachloride / Q000633:toxicity; D002374:Catalase / Q000378:metabolism; D002460:Cell Line; D056486:Chemical and Drug Induced Liver Injury; D045304:Cytochromes c / Q000378:metabolism; D005979:Glutathione Peroxidase / Q000378:metabolism; D006023:Glycoproteins / Q000494:pharmacology*; D015227:Lipid Peroxidation / Q000187:drug effects; D008055:Lipids / Q000097:blood; D008099:Liver / Q000187:drug effects* / Q000378:metabolism; D008107:Liver Diseases / Q000378:metabolism; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D016328:NF-kappa B / Q000378:metabolism; D010936:Plant Extracts / Q000494:pharmacology; D020011:Protective Agents / Q000494:pharmacology*; D013482:Superoxide Dismutase / Q000378:metabolism; D018808:Transcription Factor AP-1 / Q000378:metabolism; D034403:Ulmus / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D006023:Glycoproteins; D008055:Lipids; D016328:NF-kappa B; D010936:Plant Extracts; D020011:Protective Agents; D018808:Transcription Factor AP-1; D045304:Cytochromes c; D002251:Carbon Tetrachloride; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase