PMID- 15531908 OWN - NLM STAT- MEDLINE DCOM- 20050303 LR - 20230216 IS - 0023-6837 (Print) IS - 0023-6837 (Linking) VI - 85 IP - 1 DP - 2005 Jan TI - Camostat mesilate attenuates pancreatic fibrosis via inhibition of monocytes and pancreatic stellate cells activity. PG - 75-89 AB - Camostat mesilate (CM), an oral protease inhibitor, has been used clinically for the treatment of chronic pancreatitis in Japan. However, the mechanism by which it operates has not been fully understood. Our aim was to evaluate the therapeutic efficacy of CM in the experimental pancreatic fibrosis model induced by dibutyltin dichloride (DBTC), and we also determined the effect of CM on isolated monocytes and panceatic stellate cells (PSCs). In vivo, chronic pancreatitis was induced in male Lewis rats by single administration of 7 mg/kg DBTC and a special diet containing 1 mg/g CM was fed to the DBTC+CM-treated group from day 7, while the DBTC-treated group rats were fed a standard diet. At days 0, 7, 14 and 28, the severity of pancreatitis and fibrosis was examined histologically and enzymologically in both groups. In vitro, monocytes were isolated from the spleen of a Lewis rat, and activated with lipopolysaccharide stimulation. Thereafter, the effect of CM on monocyte chemoattractant protein-1 (MCP-1) and tumor necrosis factor-alpha (TNF-alpha) production from monocytes was examined. Subsequently, cultured rat PSCs were exposed to CM and tested to see whether their proliferation, MCP-1 production and procollagen alpha1 messenger RNA expression was influenced by CM. In vivo, the oral administration of CM inhibited inflammation, cytokines expression and fibrosis in the pancreas. The in vitro study revealed that CM inhibited both MCP-1 and TNF-alpha production from monocytes, and proliferation and MCP-1 production from PSCs. However, procollagen alpha1 expression in PSCs was not influenced by CM. These results suggest that CM attenuated DBTC-induced rat pancreatic fibrosis via inhibition of monocytes and PSCs activity. FAU - Gibo, Junya AU - Gibo J AD - Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. FAU - Ito, Tetsuhide AU - Ito T FAU - Kawabe, Ken AU - Kawabe K FAU - Hisano, Terumasa AU - Hisano T FAU - Inoue, Masanobu AU - Inoue M FAU - Fujimori, Nao AU - Fujimori N FAU - Oono, Takamasa AU - Oono T FAU - Arita, Yoshiyuki AU - Arita Y FAU - Nawata, Hajime AU - Nawata H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Lab Invest JT - Laboratory investigation; a journal of technical methods and pathology JID - 0376617 RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Esters) RN - 0 (Guanidines) RN - 0 (Organotin Compounds) RN - 0 (Procollagen) RN - 0 (Protease Inhibitors) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0FD207WKDU (camostat) RN - 4V7M9137X9 (Gabexate) RN - J4AQN88R8P (dibutyldichlorotin) SB - IM MH - Animals MH - Cell Proliferation/drug effects MH - Chemokine CCL2/genetics/metabolism MH - Disease Models, Animal MH - Dose-Response Relationship, Drug MH - Esters MH - Fibrosis/chemically induced/*drug therapy/pathology MH - Gabexate/*analogs & derivatives/pharmacology/*therapeutic use MH - Guanidines MH - Male MH - Monocytes/drug effects/metabolism/*pathology MH - Organotin Compounds/toxicity MH - Pancreas/drug effects/metabolism/*pathology MH - Pancreatitis/chemically induced/*drug therapy/pathology MH - Procollagen/genetics/metabolism MH - Protease Inhibitors/pharmacology/*therapeutic use MH - RNA, Messenger/metabolism MH - Rats MH - Rats, Inbred Lew MH - Tumor Necrosis Factor-alpha/genetics/metabolism EDAT- 2004/11/09 09:00 MHDA- 2005/03/04 09:00 CRDT- 2004/11/09 09:00 PHST- 2004/11/09 09:00 [pubmed] PHST- 2005/03/04 09:00 [medline] PHST- 2004/11/09 09:00 [entrez] AID - S0023-6837(22)01463-5 [pii] AID - 10.1038/labinvest.3700203 [doi] PST - ppublish SO - Lab Invest. 2005 Jan;85(1):75-89. doi: 10.1038/labinvest.3700203.