Gamma interferon levels during Chlamydia trachomatis pneumonia in mice
- PMID: 8335389
- PMCID: PMC281040
- DOI: 10.1128/iai.61.8.3556-3558.1993
Gamma interferon levels during Chlamydia trachomatis pneumonia in mice
Abstract
Host defense against murine Chlamydia trachomatis (mouse pneumonitis agent [MoPn]) in a murine model was investigated. Gamma interferon (IFN-gamma) was produced in the lungs by both MoPn-susceptible nude athymic (nu/nu) and MoPn-resistant heterozygous (nu/+) mice. In vivo depletion of IFN-gamma in nu/nu mice led to exacerbation of infection. Fluorescence-activated cell sorter analysis disclosed induction of GL3 antibody-positive cells (putatively gamma/delta+ T cells) in nu/nu mouse lung during infection with MoPn. Treatment of nu/nu mice in vivo with antibody to NK cells (anti-asialo GM1 antibody) or to gamma/delta cells (UC7-13D5) did not significantly decrease IFN-gamma production in the lung. However, treatment of severe combined immunodeficiency mice (which lack gamma/delta cells) with antibody to NK cells significantly reduced lung IFN-gamma levels.
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