PMID- 16676162 OWN - NLM STAT- MEDLINE DCOM- 20071024 LR - 20131121 IS - 0340-5761 (Print) IS - 0340-5761 (Linking) VI - 81 IP - 1 DP - 2007 Jan TI - Protection effect of piper betel leaf extract against carbon tetrachloride-induced liver fibrosis in rats. PG - 45-55 AB - Piper betel leaves (PBL) are used in Chinese folk medicine for the treatment of various disorders. PBL has the biological capabilities of detoxication, antioxidation, and antimutation. In this study, we evaluated the antihepatotoxic effect of PBL extract on the carbon tetrachloride (CCl(4))-induced liver injury in a rat model. Fibrosis and hepatic damage, as reveled by histology and the activities of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were induced in rats by an administration of CCl(4) (8%, 1 ml/kg body weight) thrice a week for 4 weeks. PBL extract significantly inhibited the elevated AST and ALT activities caused by CCl(4) intoxication. It also attenuated total glutathione S-transferase (GST) activity and GST alpha isoform activity, and on the other hand, enhanced superoxide dismutase (SOD) and catalase (CAT) activities. The histological examination showed the PBL extract protected liver from the damage induced by CCl(4) by decreasing alpha-smooth muscle actin (alpha-sma) expression, inducing active matrix metalloproteinase-2 (MMP2) expression though Ras/Erk pathway, and inhibiting TIMP2 level that consequently attenuated the fibrosis of liver. The data of this study support a chemopreventive potential of PBL against liver fibrosis. FAU - Young, Shun-Chieh AU - Young SC AD - Institute of Biochemistry and Biotechnology, Chung Shan Medical University, No. 110, Section 2, Chien Kauo N. Road, Taichung 402, Taiwan. FAU - Wang, Chau-Jong AU - Wang CJ FAU - Lin, Jing-Jing AU - Lin JJ FAU - Peng, Pei-Ling AU - Peng PL FAU - Hsu, Jui-Ling AU - Hsu JL FAU - Chou, Fen-Pi AU - Chou FP LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060505 PL - Germany TA - Arch Toxicol JT - Archives of toxicology JID - 0417615 RN - 0 (Actins) RN - 0 (Drugs, Chinese Herbal) RN - 0 (smooth muscle actin, rat) RN - 3352-57-6 (Hydroxyl Radical) RN - CL2T97X0V0 (Carbon Tetrachloride) RN - EC 1.11.1.6 (Catalase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EC 2.5.1.18 (Glutathione Transferase) RN - EC 2.6.1.1 (Aspartate Aminotransferases) RN - EC 2.6.1.2 (Alanine Transaminase) RN - EC 2.7.12.2 (Mitogen-Activated Protein Kinase Kinases) RN - EC 3.4.24.24 (Matrix Metalloproteinase 2) SB - IM MH - Actins/metabolism MH - Alanine Transaminase/metabolism MH - Animals MH - Aspartate Aminotransferases/metabolism MH - Blotting, Western MH - Body Weight/drug effects MH - Carbon Tetrachloride/administration & dosage/*toxicity MH - Catalase/metabolism MH - Dose-Response Relationship, Drug MH - Drugs, Chinese Herbal/chemistry/isolation & purification/*therapeutic use MH - Glutathione Transferase/metabolism MH - Hydroxyl Radical/metabolism MH - Injections, Intraperitoneal MH - Liver/drug effects/metabolism/pathology MH - Liver Cirrhosis, Experimental/chemically induced/drug therapy/*prevention & control MH - Male MH - Matrix Metalloproteinase 2/metabolism MH - Mitogen-Activated Protein Kinase Kinases/metabolism MH - Phytotherapy MH - Piper betle/*chemistry MH - Plant Leaves/*chemistry MH - Rats MH - Rats, Wistar MH - Superoxide Dismutase/metabolism EDAT- 2006/05/06 09:00 MHDA- 2007/10/25 09:00 CRDT- 2006/05/06 09:00 PHST- 2006/01/13 00:00 [received] PHST- 2006/03/27 00:00 [accepted] PHST- 2006/05/06 09:00 [pubmed] PHST- 2007/10/25 09:00 [medline] PHST- 2006/05/06 09:00 [entrez] AID - 10.1007/s00204-006-0106-0 [doi] PST - ppublish SO - Arch Toxicol. 2007 Jan;81(1):45-55. doi: 10.1007/s00204-006-0106-0. Epub 2006 May 5.