TY - JOUR
T1 - Differences in participation of innate and adaptive immunity to respiratory syncytial virus in adults and neonates
AU - Krishnan, Subramaniam
AU - Craven, Mary
AU - Welliver, Robert C.
AU - Ahmad, Nafees
AU - Halonen, Marilyn
N1 - Funding Information:
Financial support: National Institutes of Health (grants AI-44697, P50 HL 67672, and AI-42268).
PY - 2003/8/1
Y1 - 2003/8/1
N2 - Innate and adaptive immune responses to respiratory syncytial virus (RSV) in neonates were assessed by cord blood mononuclear cell (MC) cytokine expression and proliferation and these responses were compared with those from adult peripheral blood MCs. In adult cells, inactivated and live virus invoked cytokines reflecting both innate and adaptive immunity (interleukin [IL]-6, interferon [IFN]-γ, IL-2, tumor necrosis factor [TNF]-α, and IL-10). Low levels of IL-4 were detected, although only with inactivated virus. In contrast, in neonatal cells, inactivated virus invoked large levels of the innate immune cytokines IL-6, TNF-α, and IL-10 and reduced levels of IFN-γ and IL-12 but no adaptive cytokines. Live virus induced fewer innate (IL-6, IL-10, and IFN-γ) and no adaptive immune cytokines. RSV-induced proliferation was absent in neonatal MCs, although positive in adult MCs. Thus, exposure to RSV does not appear to occur before birth, and adaptive immune insufficiency or greater innate responses may account for early life RSV-induced illnesses.
AB - Innate and adaptive immune responses to respiratory syncytial virus (RSV) in neonates were assessed by cord blood mononuclear cell (MC) cytokine expression and proliferation and these responses were compared with those from adult peripheral blood MCs. In adult cells, inactivated and live virus invoked cytokines reflecting both innate and adaptive immunity (interleukin [IL]-6, interferon [IFN]-γ, IL-2, tumor necrosis factor [TNF]-α, and IL-10). Low levels of IL-4 were detected, although only with inactivated virus. In contrast, in neonatal cells, inactivated virus invoked large levels of the innate immune cytokines IL-6, TNF-α, and IL-10 and reduced levels of IFN-γ and IL-12 but no adaptive cytokines. Live virus induced fewer innate (IL-6, IL-10, and IFN-γ) and no adaptive immune cytokines. RSV-induced proliferation was absent in neonatal MCs, although positive in adult MCs. Thus, exposure to RSV does not appear to occur before birth, and adaptive immune insufficiency or greater innate responses may account for early life RSV-induced illnesses.
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U2 - 10.1086/376530
DO - 10.1086/376530
M3 - Article
C2 - 12870126
AN - SCOPUS:0041656418
SN - 0022-1899
VL - 188
SP - 433
EP - 439
JO - Journal of Infectious Diseases
JF - Journal of Infectious Diseases
IS - 3
ER -