Abstract
Prostacyclin and thromboxane A2 (TXA2) are both derived from arachidonic acid, a fatty acid present in the phospholipids of cell membranes. TXA2 is an unstable (t1/2 30s at 37 °C), powerful vasoconstrictor agent generated by platelets1. Prostacyclin is also unstable (t1/2 3 min at 37 °C) but induces vasodilatation and inhibits platelet aggregation. Prostacyclin and thromboxane A2 represent, therefore, the opposite poles of a homeostatic mechanism for regulation of platelet aggregability in vivo. Manipulation of this control mechanism will affect thrombus and haemostatic plug formation.
* This chapter was previously published in Advanced Medicine 17, and is reproduced by permission of the authors and the publishers, Pitman Medical Limited, Tunbridge Wells, U.K.
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Moncada, S., Vane, J.R. (1982). Biological significance and therapeutic potential of prostacyclin. In: Pegg, D.E., Jacobsen, I.A., Halasz, N.A. (eds) Organ Preservation. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-6267-8_3
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DOI: https://doi.org/10.1007/978-94-011-6267-8_3
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