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  • Title: Synergism between chemotactic peptide and platelet-activating factor in stimulating thromboxane B2 and leukotriene B4 biosynthesis in human neutrophils.
    Author: Tanizawa H, Tai HH.
    Journal: Biochem Pharmacol; 1989 Aug 01; 38(15):2559-63. PubMed ID: 2547385.
    Abstract:
    Formyl-Met-Leu-Phe (FMLP) and platelet-activating factor (PAF) were capable of stimulating thromboxane B2 (TXB2) and leukotriene B4 (LTB4) syntheses in human neutrophils, albeit in a relatively poor degree. A combination of FMLP and PAF, however, was synergistic in stimulating TXB2 and LTB4 syntheses. Phorbol myristate acetate (PMA) appeared to attenuate PAF- but not FMLP-induced arachidonate metabolism. These results suggest that cooperative action of FMLP and PAF on arachidonate release and metabolism does exist and that PMA-mediated protein kinase C activation may regulate FMLP and PAF actions in a different manner.
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