PMID- 15925388 OWN - NLM STAT- MEDLINE DCOM- 20050929 LR - 20131121 IS - 0024-3205 (Print) IS - 0024-3205 (Linking) VI - 77 IP - 15 DP - 2005 Aug 26 TI - Melatonin ameliorates carbon tetrachloride-induced hepatic fibrogenesis in rats via inhibition of oxidative stress. PG - 1902-15 AB - Melatonin is reported to exhibit a wide variety of biological effects, including antioxidant and anti-inflammatory. Evidence shows the important role of oxidative stress in the etiopathogenesis of hepatic fibrosis. The aim of this study was to investigate the protective effects of administration of melatonin in rats with carbon tetrachloride-induced fibrosis for 6 weeks. Hepatic fibrotic changes were evaluated biochemically by measuring tissue hydroxyproline levels and histopathogical examinations. Malondialdehyde (MDA), an end product of lipid peroxidation, and glutathione peroxidase (GSH-px) and superoxide dismutase (SOD) levels were evaluated in tissue homogenates by spectrophotometry. The nuclear factor-kappaB (NF-kappaB) in liver tissue was examined by immunohistochemistry. Tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) concentrations in Kupffer cells (KCs) culture supernatants were measured with ELISA. The rats injected subcutaneously with CCl4 for 6 weeks resulted in hepatic fibrotic changes increased hydroxyproline and MDA levels, and decreased GSH-px and SOD levels, whereas melatonin reversed these effects. Furthermore, melatonin inhibited the expression of NF-kappaB in liver tissue and decreasing production of proinflammatory cytokines such as TNF-alpha and IL-1beta from KCs in fibrotic rats. These present results suggest that melatonin ameliorates carbon tetrachloride-induced hepatic fibrogenesis in rats via inhibition of oxidative stress and proinflammatory cytokines production. FAU - Wang, Hua AU - Wang H AD - Institute of Clinical Pharmacology, Anhui Medical University, Hefei 230032, China. wanghua@ahmu.edu.cn FAU - Wei, Wei AU - Wei W FAU - Wang, Ni-Ping AU - Wang NP FAU - Gui, Shuang-Yin AU - Gui SY FAU - Wu, Li AU - Wu L FAU - Sun, Wu-Yi AU - Sun WY FAU - Xu, Shu-Yun AU - Xu SY LA - eng PT - Journal Article PL - Netherlands TA - Life Sci JT - Life sciences JID - 0375521 RN - 0 (Interleukin-1) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (Serum Albumin) RN - 0 (Serum Globulins) RN - 0 (Tumor Necrosis Factor-alpha) RN - 4Y8F71G49Q (Malondialdehyde) RN - CL2T97X0V0 (Carbon Tetrachloride) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EC 2.6.1.1 (Aspartate Aminotransferases) RN - EC 2.6.1.2 (Alanine Transaminase) RN - JL5DK93RCL (Melatonin) RN - RMB44WO89X (Hydroxyproline) SB - IM MH - Alanine Transaminase/blood MH - Animals MH - Aspartate Aminotransferases/blood MH - Carbon Tetrachloride MH - Glutathione Peroxidase/metabolism MH - Hydroxyproline/metabolism MH - Interleukin-1/metabolism MH - Kupffer Cells/drug effects/metabolism MH - Lipopolysaccharides/pharmacology MH - Liver/drug effects/metabolism/pathology MH - Liver Cirrhosis, Experimental/chemically induced/pathology/*prevention & control MH - Male MH - Malondialdehyde/metabolism MH - Melatonin/*pharmacology MH - NF-kappa B/metabolism MH - Oxidative Stress/*drug effects MH - Rats MH - Rats, Sprague-Dawley MH - Serum Albumin/metabolism MH - Serum Globulins/metabolism MH - Superoxide Dismutase/metabolism MH - Tumor Necrosis Factor-alpha/metabolism EDAT- 2005/06/01 09:00 MHDA- 2005/09/30 09:00 CRDT- 2005/06/01 09:00 PHST- 2004/10/29 00:00 [received] PHST- 2005/04/15 00:00 [accepted] PHST- 2005/06/01 09:00 [pubmed] PHST- 2005/09/30 09:00 [medline] PHST- 2005/06/01 09:00 [entrez] AID - S0024-3205(05)00407-8 [pii] AID - 10.1016/j.lfs.2005.04.013 [doi] PST - ppublish SO - Life Sci. 2005 Aug 26;77(15):1902-15. doi: 10.1016/j.lfs.2005.04.013.