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  • Title: The effects of interleukin-10 on interleukin-1 receptor antagonist and interleukin-1 beta production in human monocytes and neutrophils.
    Author: Jenkins JK, Malyak M, Arend WP.
    Journal: Lymphokine Cytokine Res; 1994 Feb; 13(1):47-54. PubMed ID: 8186324.
    Abstract:
    LPS stimulates human monocytes and neutrophils to produce IL-1 beta and IL-1 receptor antagonist (IL-1ra). IL-10 has been shown to inhibit LPS-induced IL-1 beta production in human monocytes. The objective of these studies was to examine the effects of IL-10 on human monocyte and neutrophil IL-1ra protein and mRNA production and compare it to IL-1 beta. IL-10 markedly inhibited LPS-induced IL-1 beta mRNA and protein production in both cell types. IL-10 alone induced IL-1ra mRNA production in monocytes with a low level of protein production. Furthermore, IL-10 led to enhanced levels of IL-1ra mRNA in LPS-induced monocytes at 2 to 6 h and of IL-1ra protein at 4-16 h, but there was no increase in levels of IL-1ra protein at 24 h or later. In neutrophils IL-10 alone did not stimulate IL-1ra protein or mRNA production and did not augment LPS-induced IL-1ra mRNA. These net effects of IL-10 resulted in an increase in the ratio of IL-1ra to IL-1 beta in both neutrophils and monocytes. The net effects of IL-10 on inflammatory cells may be important in modulation of biologic responses to IL-1.
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