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Mech Ageing Dev. 2005 Nov;126(11):1223-9.

The balance between influenza- and RSV-specific CD4 T cells secreting IL-10 or IFNgamma in young and healthy-elderly subjects.

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  • 1David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA.


Respiratory syncytial virus (RSV) and influenza virus cause severe disease in elderly patients. The balance of pro- and anti-inflammatory cytokines may be critical in determining disease pathogenesis and outcome of infection. The frequencies of CD4 IL-10 (anti-inflammatory)- and CD4 and CD8 IFNgamma (pro-inflammatory)-secreting memory T cells specific for either RSV or influenza were not significantly different between young and elderly groups, although the ratio of IL-10/IFNgamma was significantly reduced in the elderly RSV response. A similar trend was seen for influenza. IFNgamma-secreting CD4 T cells contributed significantly more to anti-RSV than anti-influenza responses in both groups.

[PubMed - indexed for MEDLINE]
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