University of Hertfordshire


  • Malak Alyamanil
  • N.S. Kirkby
  • Louise Susan MacKenzie
  • M.H. Lundberg
  • T.D. Warner
  • J.A. Mitchell
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Original languageEnglish
Article number069P
JournalpA2 online
Journal publication date2012
Publication statusPublished - 2012
EventBPS Winter Meeting 2012 - London, United Kingdom
Duration: 18 Dec 201220 Dec 2012


Prostacyclin is an important cardioprotective hormone produced by the vascular wall, whose synthesis is dependent on cyclo-oxygenase (COX) enzymes. In healthy vessels the endothelium is thought to be the main site of prostacyclin release (Moncada et al 1977). Two isoforms of COX exist, and we have recently published data demonstrating that it is COX-1 rather than COX-2 that drives the production of prostacyclin in mouse aorta (Kirkby et al 2012). In this study we aimed to extend these observations by investigating what proportion of the COX-1 driven aortic prostacyclin production that comes from the endothelium versus the rest of the vessel wall (smooth muscle layers and adventitia). To do this, we explored how removal of the endothelium would influence the ability of aortic tissue to release prostacyclin in response to a range of agonists that are known to activate the endothelium and the vessel wall

ID: 7739767