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J Immunol. 2000 Sep 1;165(5):2327-30.

The T cell chemoattractant IFN-inducible protein 10 is essential in host defense against viral-induced neurologic disease.

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Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92612, USA.


The contribution of the T cell chemoattractant chemokine IFN-inducible protein 10 (IP-10) in host defense following viral infection of the CNS was examined. IP-10 is expressed by astrocytes during acute encephalomyelitis in mouse hepatitis virus-infected mice, and the majority of T lymphocytes infiltrating into the CNS expressed the IP-10 receptor CXCR3. Treatment of mice with anti-IP-10 antisera led to increased mortality and delayed viral clearance from the CNS as compared with control mice. Further, administration of anti-IP-10 led to a >70% reduction (p </= 0.001) in CD4+ and CD8+ T lymphocyte infiltration into the CNS, which correlated with decreased (p </= 0.01) levels of IFN-gamma. These data indicate that IP-10 functions as a sentinel molecule in host defense and is essential in the development of a protective Th1 response against viral infection of the CNS.

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