AI Article Synopsis

  • The study aimed to establish a rat model for continuous regional arterial infusion of nafamostat and evaluate its effects on severe acute pancreatitis through different administration routes.
  • Rats received nafamostat either intravenously or via intraarterial infusion, with assessments of drug concentration in the pancreas and lung, as well as levels of trypsinogen activated peptide (TAP) and serum interleukin-6.
  • Results showed that intraarterial infusion led to higher nafamostat levels in the pancreas and reduced levels of TAP and pancreatic necrosis, along with lower serum IL-6 and mortality rates compared to intravenous infusion.

Article Abstract

Objectives: The rat experimental model of continuous regional arterial infusion of protease inhibitor (CRAI) on acute pancreatitis has yet to be established. Therefore, the aims of this study were (1) to establish the rat experimental model of CRAI and (2) to evaluate the effects of nafamostat on rat severe acute pancreatitis via different routes of administration.

Methods: The rat internal jugular vein or the celiac artery was infused with nafamostat, and the concentration of nafamostat in the lung and pancreas was measured. After the induction of severe acute pancreatitis, rats received intravenous or regional intraarterial infusion of nafamostat and then concentrations of trypsinogen activated peptide (TAP) and serum interleukin (IL-6), and histologic sections of the pancreas were examined and the 96-hour survival rate was evaluated.

Results: CRAI rats had higher concentrations of nafamostat in the pancreas than those infused intravenously. However, CRAI rats had lower concentrations of nafamostat in the lung that those infused intravenously. CRAI significantly reduced the levels of TAP and pancreatic necrosis. Moreover, the levels of serum IL-6 and the mortality rate were significantly reduced after CRAI compared with the intravenous infusion of nafamostat.

Conclusion: The effectiveness of the rat experimental model of CRAI on acute pancreatitis was clearly demonstrated. The concentration of nafamostat in the lung and pancreas and the effects of nafamostat differ according to the route of administration.

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http://dx.doi.org/10.1097/01.mpa.0000153328.54569.28DOI Listing

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