alexa Abstract | Etanercept, a TNF-alpha Binding Agent, Is Ineffective in the Prevention of Post-ERCP Pancreatitis in Canines

JOP. Journal of the Pancreas
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Context The incidence of post-ERCP pancreatitis is 1-22%. It continues to be a difficult problem for endoscopist and patient. Uncovering an agent that may be used to prevent its occurrence is critical. Objective The aim of our study was to investigate the role of etanercept in the prevention of post-ERCP pancreatitis. Design Endoscopic retrograde pancreatography (ERP)-induced injury was performed in dogs using a previously established endoscopic model of post-ERCP pancreatitis. Animals Eight study dogs underwent ERP: 4 were pre-treated with etanercept one day before the procedure and 4 were untreated. In addition, three control dogs not undergoing ERP were also studied. Main outcome measures Serum levels of amylase, lipase, and TNF-alpha, as well as the ratio of urinary trypsinogen activation peptide (TAP) and urinary creatinine, were measured before and after ERP. Necropsy was performed on post-operative day 5. All pancreatic specimens were graded by two blinded pathologists according to a validated scoring system. Results Eight study dogs developed mild to moderate clinical pancreatitis with hyperamylasemia (11,538±4,065 U/L vs. 701±157 U/L; post-ERP peak levels vs. baseline values: P<0.001) and hyperlipasemia (3,637±2,333 U/L vs. 246±125 U/L; P=0.003). Mean total injury score was significantly elevated in study dogs compared to control dogs (6.16±1.85 vs. 1.06±0.49; P=0.001). There were escalating total injury scores concordant with more elaborate methods of endoscopically-induced injury although the trend did not reach the statistical significance (P=0.223). When comparing untreated to etanercept-treated dogs, there were no significant differences in serum amylase levels (P=0.903), serum lipase levels (P=0.771), TAP/creatinine urinary ratio (P=0.912), and pancreatic injury score (P=0.324). Conclusion Etanercept is ineffective in prevention of mild to moderate post-ERCP pancreatitis in canines. ERP-induced pancreatic injury can be used as a reliable animal model for studies investigating therapy and prevention of post-ERCP pancreatitis.

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Author(s): Jonathan M Buscaglia Brian W Simons Brent J Prosser Dawn S Ruben Samuel A Giday Priscilla Magno John O Clarke Eun Ji Shin Anthony N Kalloo Sergey V Kantsevoy Kathleen L Gabrielson Sanjay B Jagannath


Cholangiopancreatography, Endoscopic Retrograde, Dogs, Pancreatitis

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