2015
DOI: 10.1186/s12931-015-0282-7
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Alveolar macrophages support interferon gamma-mediated viral clearance in RSV-infected neonatal mice

Abstract: BackgroundPoor interferon gamma (IFNγ) production during respiratory syncytial virus (RSV) is associated with prolonged viral clearance and increased disease severity in neonatal mice and humans. We previously showed that intra-nasal delivery of IFNγ significantly enhances RSV clearance from neonatal lungs prior to observed T-lymphocyte recruitment or activation, suggesting an innate immune mechanism of viral clearance. We further showed that alveolar macrophages dominate the RSV-infected neonatal airways rela… Show more

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Cited by 51 publications
(58 citation statements)
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“…The high rate of reinfections by RSV results in a significant burden on health care in infants and elderly 2. Interferon gamma (IFN‐γ) and T cells are essential to mount an adequate immune response during RSV infections in newborn and adult mice 3, 4, 5. This suggests an important role for IFN‐γ in the clearance of primary infections as well as in reinfections 4, 6.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…The high rate of reinfections by RSV results in a significant burden on health care in infants and elderly 2. Interferon gamma (IFN‐γ) and T cells are essential to mount an adequate immune response during RSV infections in newborn and adult mice 3, 4, 5. This suggests an important role for IFN‐γ in the clearance of primary infections as well as in reinfections 4, 6.…”
Section: Introductionmentioning
confidence: 99%
“…Interferon gamma (IFN‐γ) and T cells are essential to mount an adequate immune response during RSV infections in newborn and adult mice 3, 4, 5. This suggests an important role for IFN‐γ in the clearance of primary infections as well as in reinfections 4, 6. Inhibition or inadequate activation of T cells resulting in lower secretion of IFN‐γ may explain this high rate of reinfections 7, 8.…”
Section: Introductionmentioning
confidence: 99%
“…Alveolar macrophages are important players in the pulmonary immune system (3)(4)(5)(6)(7)(8). During pneumococcal infection, clearance of pneumococci is initiated by macrophages, not neutrophils.…”
mentioning
confidence: 99%
“…This reduction was associated with the upregulation of antiviral proteins, such as IFIT1and Mx1 [34]. High levels of IFN-γ exposure prior to RSV infection have also been shown to inhibit RSV replication in adult BALB/c mice [35]. Though IFN-γ is largely considered a proinflammatory cytokine [36] it has also been reported to have anti-inflammatory effects [37,38,39].…”
Section: Resultsmentioning
confidence: 99%