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|Titolo:||Modulation by interferon-gamma of the production and gene expression of IL-1 receptor antagonist in human neutrophils|
|Autori interni:||GASPERINI, Sara|
CASSATELLA, Marco Antonio
|Data di pubblicazione:||1998|
|Abstract:||In this report, we show that interferon-gamma (IFN-gamma) modulates the production of IL-1ra in activated human neutrophils. In lipopolysaccharide-stimulated cells, IFN-gamma increased the release of IL-1ra without modulating IL-1ra mRNA accumulation; under these conditions, IFN-gamma only marginally enhanced IL-1ra de novo synthesis, while IL-1ra was more efficiently secreted. In response to the formylated peptide, fMLP, neutrophils released small but significant amounts of IL-1ra, yet without an increase in IL-1ra mRNA over constitutive levels. Following IFN-gamma treatment, however, the fMLP-elicited IL-1ra production was greatly potentiated, and this was accompanied by a transient increased accumulation of IL-1ra mRNA. Finally, opsonized yeast particles were found to induce IL-1ra formation at late incubation times, and prior treatment of neutrophils with IFN-gamma moderately enhanced this response. Collectively, our results demonstrate that in neutrophils activated by different classes of agonists, I|
|Appare nelle tipologie:||01.01 Articolo in Rivista|
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