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  • Title: Endogenous IL-10 protects mice from death during septic peritonitis.
    Author: van der Poll T, Marchant A, Buurman WA, Berman L, Keogh CV, Lazarus DD, Nguyen L, Goldman M, Moldawer LL, Lowry SF.
    Journal: J Immunol; 1995 Dec 01; 155(11):5397-401. PubMed ID: 7594556.
    Abstract:
    IL-10 production during endotoxic shock is part of a protective mechanism that involves IL-10-induced inhibition of TNF synthesis. We sought to determine the role of IL-10 in septic peritonitis induced by cecal ligation and puncture (CLP). CLP led to a rapid induction of IL-10 mRNA in various organs of C57BI/6 mice. In liver, IL-10 mRNA was detectable within 1 h following CLP, while in spleen and lungs, IL-10 mRNA was detected from 2 to 4 h and onward. IL-10 protein became detectable in plasma 2 h after CLP, reaching peak concentrations after 12 h (12.7 +/- 5.7 ng/ml). Pretreatment (-2 h) with anti-IL-10 mAb resulted in higher plasma TNF levels following CLP when compared with mice treated with control mAb. Plasma IL-1 activity and IFN-gamma remained undetectable in virtually all mice. Anti-IL-10 enhanced mortality after CLP (p < 0.05 by log-rank test). Addition of anti-TNF mAb did not influence the increased mortality associated with anti-IL-10 treatment. Septic peritonitis is associated with sustained production of IL-10 in various organs, which serves to protect the host against lethality.
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