IgE-independent mediator release from basophils is considered an important event in inflammation, particularly in nonallergic immediate hypersensitivity and in allergic late-phase reactions. This study demonstrates that after exposure to IL-3, basophils release histamine and leukotrienes in response to the neutrophil-activating peptide NAF/NAP-1. Thus, the sequential action of two pure cytokines can promote basophils mediator release. In the presence of IL-3, NAF/NAP-1 functions like a "histamine-releasing factor" and may therefore not only induce cellular infiltration but also provoke symptoms of hypersensitivity reactions.
The neutrophil-activating peptide NAF/NAP-1 induces histamine and leukotriene release by interleukin 3-primed basophils.
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C A Dahinden, Y Kurimoto, A L De Weck, I Lindley, B Dewald, M Baggiolini; The neutrophil-activating peptide NAF/NAP-1 induces histamine and leukotriene release by interleukin 3-primed basophils.. J Exp Med 1 November 1989; 170 (5): 1787–1792. doi: https://doi.org/10.1084/jem.170.5.1787
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