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- W2099767408 abstract "IL-10 exhibits anti-inflammatory effects on activated rodent mast cells (MC) in vitro and inhibits allergen-induced airway inflammation in vivo in murine models. The effects of IL-10 on the allergic activation of human MC are presently unknown.In light of the well-known heterogeneity of mast cell reactivity between animal species, one cannot readily predict the response of human MC to IL-10. Moreover, the impact of IL-10 on MC-derived proinflammatory mediators is still unknown. Thus, the objective of this study was to investigate the effects of IL-10 on the release of inflammatory mediators by IgE/anti-IgE-challenged human cord blood-derived mast cells (CBMC), used as an in vitro model of MC phenotypically similar to human lung MC.Highly purified human MC were obtained by a first step of long-term culture of cord blood mononuclear cells in the presence of human recombinant stem cell factor (rhSCF) and of human recombinant IL-6 (rhIL-6), followed by a second step of purification by depletion of contaminating cells with an immunomagneticThe cells were treated with human IgE, then challenged with anti-human IgE, in the presence or the absence of recombinant rhIL-10 used at various concentrations. Histamine, tumour necrosis factor-alpha (TNF-alpha), IL-5 and IL-8 were measured in the various supernatants collected at different times after the beginning of the challenge.IL-10 inhibited the release of TNF-alpha and of IL-8, but not of IL-5, by activated CBMC. Interestingly, IL-10 also inhibited the release of histamine by activated CBMC, contrasting with data reported for rodent MC.These findings suggest that IL-10 might have anti-inflammatory effects on IgE/anti-IgE-challenged human MC by inhibiting their release of TNF-alpha, IL-8 and histamine. These data provide new insights into the control of human mast cell activation and might lead to a better knowledge of the cellular mechanisms controlling allergic reactions." @default.
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- W2099767408 date "2001-05-01" @default.
- W2099767408 modified "2023-10-18" @default.
- W2099767408 title "Inhibition of IgE-induced activation of human mast cells by IL-10" @default.
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- W2099767408 doi "https://doi.org/10.1046/j.1365-2222.2001.01069.x" @default.
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