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Soluble tumour necrosis factor (TNF)-receptor levels in serum as markers of anti-viral host reactivity by C BARTHOLDY; A NANSEN; O MARKER; A R THOMSEN is a Immunology and Microbiology article available to read on EtoBox.

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## SUMMARY The role of soluble receptors for TNF-α (sTNF-Rs) as markers of virus-induced host responses was studied by the use of murine model infections. A marked elevation in serum levels of sTNF-R75, but not sTNF-R55, was found 1 day after infection with vesicular stomatitis virus (VSV). In mice infected with lymphocytic choriomeningitis virus (LCMV), an early increase was also revealed, but peak levels of sTNF-R75 were observed later temporally related to maximal T cell-mediated anti-viral activity. Analysing different well characterized knockout mice, it was found that elevated release of sTNF-R75 into serum early after VSV infection was independent of T cells, whereas interferon (IFN)-α/β seemed to be a major mediator. In contrast, increased release of sTNF-R75 into serum 8 days post-LCMV infection was mediated via T cells but independently of both CD40 ligand and IFN-γ. A simple correlation between release of sTNF-Rs in vivo and macrophage activation in vitro was not present. These findings indicate that sTNF-R75 is indeed a sensitive marker of both innate and specific cell-mediated host reactivity during viral infection, but it is not correlated to a single immunological pa

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Author

C BARTHOLDY; A NANSEN; O MARKER; A R THOMSEN

Publisher

Oxford University Press (OUP)

Published

1999

Language

EN

Field

Immunology and Microbiology (Life Sciences)