Interleukin 10 prevents necrosis in murine experimental acute pancreatitis

Gastroenterology
J L Van LaethemJ Devière

Abstract

Inflammatory events are believed to play an important role in the pathogenesis of acute pancreatitis. Interleukin 10 (IL-10) recently emerged as a major anti-inflammatory cytokine, inhibiting the secretion of proinflammatory cytokines by monocytes and/or macrophages. The potential protective role of IL-10 in a model of acute necrotizing pancreatitis in mice was tested. Animals received two intraperitoneal injections of either 1000 U recombinant IL-10 or control supernatant before and during induction of acute pancreatitis with repeated cerulein injections (seven intraperitoneal injections of 50 micrograms/kg at hourly intervals). Systemic amylase and lipase release peaked 9 hours after the first cerulein injection. This peak was significantly reduced by IL-10 treatment. Histologically, edema and inflammation of the pancreas were observed in both groups, whereas necrosis was dramatically reduced in IL-10-treated animals. Serum tumor necrosis factor levels were undetectable in this model; reverse-transcriptase polymerase chain reaction analysis of resected pancreatic tissues performed at the time of maximal morphological alterations showed a dramatically decreased expression of tumor necrosis factor alpha messenger RNA after IL-1...Continue Reading

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