Review
doi: 10.1016/s0952-7915(02)00361-8.The role of IFN-gamma in the outcome of chlamydial infection
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- PMID:12088678
- DOI: 10.1016/s0952-7915(02)00361-8
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Review
The role of IFN-gamma in the outcome of chlamydial infection
Martín E Rottenberg et al. Curr Opin Immunol.2002 Aug.
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Abstract
Chlamydia are intracellular bacteria which infect many vertebrates, including humans. They cause a myriad of severe diseases, ranging from asymptomatic infection to pneumonia, blindness or infertility. IFN-gamma plays an important role in defense against acute infection and in the establishment of persistence. Chlamydia have evolved mechanisms to escape IFN-gamma functions. IFN-gamma-mediated effector mechanisms may involve effects on the metabolism of tryptophan or iron, on the inducible NO synthase (iNOS), on the secretion of chemokines and adhesion molecules or on the regulation of T-cell activities. IFN-gamma is secreted by the innate and the adaptive arms of the immune system. Within the former, Chlamydia-infected macrophages express IFN-gamma that in turn mediates resistance to infection. IFN-alpha/beta are pivotal for both IFN-gamma- and iNOS-mediated resistance to chlamydial infection in macrophages.
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