Regulation of pulmonary fibrosis by chemokine receptor CXCR3
J. Clin. Invest. Dianhua Jiang, et al. 114:291 doi:10.1172/JCI16861 [
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Figure 5IFN-γ regulates lung fibrosis. (
A) Lung injury was induced in CXCR3-deficient (KO) or WT mice by intratracheal instillation of bleomycin. For one group of CXCR3-deficient mice, recombinant IFN-γ was injected intramuscularly 20 hours before and repeated 24 and 48 hours after bleomycin treatment. On day 21 after bleomycin instillation, the lungs were harvested and assayed for collagen content. (
B) Neutralizing IFN-γ Ab worsens lung fibrosis. IFN-γ or isotype-matched control Ig was given to C57BL/6J mice 24 hours before bleomycin lung injury. Collagen contents were assayed on day 21 following injury in C57BL/6J mice. Six to seven mice per group were used.