Suppression of proliferative cholangitis in a rat model by local delivery of paclitaxel

• Published in: Journal of Hepato‐Biliary‐Pancreatic Surgery Vol. 10; no. 2; pp. 176 - 182
• Main Authors: Park, Seon‐Mee, Choi, Jae‐Woon, Kim, Seung–Taik, Cho, Myung‐Chan, Sung, Ryo Hyen, Jang, Lee‐Chan, Park, Jin‐Woo, Lee, Sum Ping, Park, Yong‐Hyun
• Format: Journal Article
• Language: English
• Published: Japan 2003
• Subjects: Animals; Antineoplastic Agents, Phytogenic - administration & dosage; Bile Ducts - pathology; biliary stricture; Cholangitis - drug therapy; Cholangitis - pathology; Cholangitis - prevention & control; Disease Models, Animal; Dose-Response Relationship, Drug; Immunohistochemistry; Male; paclitaxel; Paclitaxel - administration & dosage; proliferative cholangitis; rat; Rats; Rats, Sprague-Dawley
• ISSN: 0944-1166; 1868-6982; 1436-0691
• DOI: 10.1007/s00534-002-0804-9

Background Proliferative cholangitis (PC) leads to biliary stricture, which is the main cause of hepatolithiasis, recurrent cholangitis, and biliary cirrhosis. The aim of this study was to determine whether local delivery of paclitaxel, which inhibits cell proliferation by overstabilization of microtubules, prevents PC in a rat model. Methods PC was induced by introducing a fine nylon thread into the bile duct in a rat. Paclitaxel (100 μl of 10, 100, and 1000 μmol/l) or solvent vehicle was administered into the bile duct for 15 min. One week after treatment, histopathologic examination and 5‐bromodeoxyuridine (BrdU) labeling of the bile duct were performed. Results In comparison with the control, the mean thickness of the bile duct was reduced by 29% in the 1000 μmol/l paclitaxel‐treated group (2.61 ± 0.31 μm vs 3.67 ± 0.25 μm, P < 0.05). The luminal area increased (P < 0.0001) and the grade of epithelial–glandular proliferation was decreased (P < 0.01) as the dose of paclitaxel increased. Ductal fibrosis and inflammatory cell infiltration were similar in both groups. The BrdU labeling index was significantly lower in the paclitaxel‐treated group (P < 0.05). Conclusions Local delivery of paclitaxel suppressed PC in a rat model by the inhibition of epithelial–glandular proliferation and may offer an effective therapeutic option for biliary stricture.