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  • Title: Synthesis of prostaglandins and eicosanoids by the mast cell secretory granule.
    Author: Chock SP, Schmauder-Chock EA.
    Journal: Biochem Biophys Res Commun; 1988 Nov 15; 156(3):1308-15. PubMed ID: 3190706.
    Abstract:
    The identification of a non-bilayer phospholipid storage in the secretory granule and the linking of the eicosanoid production with the release of histamine have prompted us to examine whether the secretory granule may also serve as both the source as well as the site of prostaglandin synthesis during exocytosis. By exposing the contents of purified granules to exogenous arachidonic acid at neutral pH, we observed the rapid formation of many eicosanoids. The presence of prostaglandins E2, D2 and F2a were identified. The kinetics of E2 formation was also followed. The localization of the arachidonic acid cascade to the secretory granule explains why the production of eicosanoids is so intimately tied to the process of granule exocytosis.
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