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Inhibition of IFN-gamma-inducible protein-10 abrogates colitis in IL-10-/- mice

Singh U.P., S. Singh, D.D. Taub, and J.W. Lillard, Jr. (2003) Inhibition of IP-10 abrogates colitis in IL-10-/- mice. Journal of Immunology.171: 1401-1406.

Abstract

A deficiency in understanding the steps responsible for colitis is the lack of comprehension for the role chemokines play in mucosal inflammation. IFN-gamma-inducible protein-10 (IP-10) and CXCR3 are highly expressed at sites of colitis. Our findings show that IP-10 significantly contributes to the development of Th1 and inflammatory responses. Specifically, IP-10 inhibition in IL-10(-/-) mice attenuates the associated increases in serum and/or local amyloid A, IL-2, IL-6, TNF-alpha, IFN-gamma, IL-1alpha, and IL-1beta with colitis as compared with IL-10(-/-) mice that develop colitis similar to human Crohn’s disease. Correspondingly, the rate or intensity of inflammation in IL-10(-/-) mice treated with anti-IP-10 Abs showed improved scoring of inflammation, compared with control IL-10(-/-) mice. This study provides important and novel information regarding IP-10 as a target for the treatment of colitis.

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