IgE-dependent release of leukotriene C4 from alveolar macrophages.

作者: John A. Rankin , Margaret Hitchcock , William Merrill , Michael K. Bach , John R. Brashler

DOI: 10.1038/297329A0

关键词: Leukotriene C4Immune systemChemistryImmunoglobulin EReceptorMacrophageImmunologyAntigenCytotoxic T cellAntibody

摘要: Slow reacting substances (SRS) are potent bronchoconstrictors that thought to be important in the pathophysiology of asthma1. Human2–5 and animal6,7 lung fragments release SRS when sensitized by IgE antibody challenged with specific antigen. have been shown recently a family peptidolipids called leukotrienes (LTC4, LTD4 LTE4) derived from arachidonic acid8–11 vivo vitro12,14. It is not known which cell(s) responsible for releasing but two recent observations directed our attention alveolar macrophages. First, Capron co-workers demonstrated serum rats immune Schistosoma mansoni parasites could cause rat peritoneal macrophages cytotoxic schistosomules vitro15. This result interaction macrophage Fc receptors16. Similar receptors also present on macrophages17. Second, Bach Brashler18–21 established mixture LTC4 stimulated calcium ionophore A23187. We now show can activated and, antigen, LTC4.

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