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Clinical and Diagnostic Laboratory Immunology, May 1995, 322-324, Vol 2, No. 3
K Matsuda, H Tsutsumi, Y Okamoto and C Chiba
Cytokine (interleukin 6 [IL-6] and tumor necrosis factor alpha [TNF-
alpha]) activity in nasopharyngeal secretions of 21 infants and children
(19 days to 16 months old) infected with primary respiratory syncytial
virus was determined by an enzyme-linked immunosorbent assay. IL-6 and
TNF-alpha were detectable in 100% (21 of 21) and 67% (14 of 21) of cases
during the course of infection, respectively. Generally, TNF-alpha activity
was high in the acute phase and declined thereafter, sometimes to
undetectable levels. IL-6 activity was also highest in the acute phase and
declined thereafter in infants younger than 5 months, while in patients
older than 5 months, it-increased during the course of the disease to peak
in the early convalescent phase. These observations suggest that
inflammatory cytokines are produced in vivo in infants and children in
response to primary respiratory syncytial virus infection and may be
involved in disease pathogenesis. However, the mechanism of induction of
cytokines may be different for infants and children in different age
groups.
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Development of interleukin 6 and tumor necrosis factor alpha activity in nasopharyngeal secretions of infants and children during infection with respiratory syncytial virus
Department of Pediatrics, Sapporo Medical University School of Medicine, Japan.
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