Original Article Validation of a novel, physiologic model of experimental acute pancreatitis in the mouse
Kathryn M. Ziegler, Terence E. Wade, Sue Wang, Deborah A. Swartz-Basile, Henry A. Pitt, Nicholas J. Zyromski
Department of Surgery, Indiana University, Indianapolis, IN, USA
Received November 23, 2010; Accepted December 20, 2010; Epub December 23, 2010; Published January 1, 2011
Abstract: Background: Many experimental models of acute pancreatitis suffer from lack of clinical relevance. We sought to validate a recently reported murine model of acute pancreatitis that more closely represents the physiology of human biliary pancreatitis. Methods: Mice (C57BL/6J and CF-1) underwent infusion of 50μl of 5% sodium taurocholate (NaT) or 50μl of normal saline (NaCl) directly into the pancreatic duct. Twenty-four hours later, pancreatitis severity was graded histologically by three independent observers, and pancreatic tissue concentration of interleukin-6 (IL-6) and monocyte chemoattractant protein-1 (MCP-1) were determined by ELISA. Results: Twenty four hours after retrograde injection, the total pancreatitis score was significantly greater in mice infused with NaT than in those infused with NaCl (6.3 ± 1.2 vs. 1.2 ± 0.4, p<0.05). In addition, the inflammatory mediators IL-6 and MCP-1 were increased in the NaT group relative to the NaCl group. Discussion: Retrograde pancreatic duct infusion of sodium taurocholate induces acute pancreatitis in the mouse. This model is likely representative of human biliary pancreatitis pathophysiology, and therefore provides a powerful tool with which to elucidate basic mechanisms underlying the pathogenesis of acute pancreatitis.(AJTR1011005).
Address all correspondence to: Nicholas J Zyromski, MD Assistant Professor, Department of Surgery Indiana University School of Medicine 535 Barnhill Dr. RT 130 Indianapolis, IN 46202 Ph 317-274-5012 Fax 317-274-4554 Email: nzyromsk@iupui.edu