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Decreased IL-2, IFN-γ, and IL-10 Production by Aged Mice During the Acute Phase of E55+ Retrovirus Infection
Journal article   Open access   Peer reviewed

Decreased IL-2, IFN-γ, and IL-10 Production by Aged Mice During the Acute Phase of E55+ Retrovirus Infection

Mohamed Elrefaei, Kenneth J Blank and Donna M Murasko
Virology (New York, N.Y.), v 299(1)
2002
PMID: 12167336
url
https://doi.org/10.1006/viro.2002.1367View
Published, Version of Record (VoR) Open

Abstract

B cell retrovirus IFN-γ CD4 + T cell IL-2 CD8 + T cells aging IL-10
We previously reported that aged mice demonstrated a 12-week delay in virus clearance compared to young mice after infection with E55+ murine leukemia retrovirus (E55+MuLV). The current study demonstrates that both the levels of IL-2, IFN-γ, and IL-10 and the number of cells producing IL-2 and IFN-γ were lower at 2 and 4 weeks postinfection (p.i.) in aged compared to young mice after virus-specific stimulation of spleen cells in vitro. In both age groups, IL-2 and IL-10 were produced by CD4 + T and B cells, respectively. IFN-γ was produced mainly by CD4 + T cells at 2 weeks p.i. and by CD4 + and CD8 + T cells at 4 weeks p.i. in young, but primarily by CD8 + T cells, in aged mice. Therefore, delayed virus clearance is associated with age-related decreases in type 1 and type 2 cytokines and a shift in the primary source of at least one cytokine.

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