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Platelet-Activating Factor and Related Lipid Mediators pp 283–298Cite as

Platelet-Activating Factor: Mechanisms of Cellular Activation

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Abstract

Platelet-activating factor (PAF) is a phosphatidylcholine containing a long-chain alkyl ether at position 1 and an acetate ester at position 2 (Blank et al., 1979; Demopoulos et al., 1979; Polonsky et al., 1980):

Various cell types form and secrete this product when stimulated. PAF is found in the blood of animals undergoing experimentally induced toxic reactions such as anaphylaxis, serum sickness, and endotoxemia. It can mimic these reactions when injected intravenously into healthy animals. In particular, PAF infusion produces the activation of intravascular leukocytes and platelets, contraction of pulmonary airways, vascular instability, enhanced capillary permeability, and cardiac abnormalities. Deposited locally into tissues, PAF promotes edema and leukocyte accumulation. These results implicate PAF as a mediator of allergic and inflammatory reactions. However, even the most complex, systemic effects of PAF must result from fundamental interactions with target cells. Some understanding of these interactions has been obtained using in vitro studies on tissues containing one or only a few cell types.

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  1. Department of Medicine, Wake Forest University Medical Center, Winston-Salem, North Carolina, 27103, USA

    Joseph T. O’Flaherty

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  1. Medical and Health Sciences Division, Oak Ridge Associated Universities, Oak Ridge, Tennessee, 37831, USA

    Fred Snyder Ph.D

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O’Flaherty, J.T. (1987). Platelet-Activating Factor: Mechanisms of Cellular Activation. In: Snyder, F. (eds) Platelet-Activating Factor and Related Lipid Mediators. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-5284-6_13

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  • DOI: https://doi.org/10.1007/978-1-4684-5284-6_13

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4684-5286-0

  • Online ISBN: 978-1-4684-5284-6

  • eBook Packages: Springer Book Archive

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