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  • Title: Molecular species of platelet-activating factor generated by human neutrophils challenged with ionophore A23187.
    Author: Oda M, Satouchi K, Yasunaga K, Saito K.
    Journal: J Immunol; 1985 Feb; 134(2):1090-3. PubMed ID: 3917470.
    Abstract:
    Two species of platelet-activating factor (PAF), 1-hexadecyl- and 1-octadecyl-2-acetyl-sn-glycero-3-phosphocholine (C16 = 0 AGEPC and C18 = 0 AGEPC) were detected in ionophore A23187-stimulated human neutrophils. The amount of AGEPC in 1 x 10(7) neutrophil cells was 80 +/- 26 pmol (mean +/- standard error) with a range of 14 to 223 pmol (n = 8), and it consisted of 80% of the C16 = 0 species and 20% of the C18 = 0 species. Most of the AGEPC derived from ionophore-treated neutrophils remained cell associated rather than being secreted into the medium, even when the medium contained ample albumin protein, which can trap AGEPC. These results were obtained by a technique of gas chromatography-mass spectrometry coupled with selected ion monitoring.
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