Modification of neutrophil adhesion to human endothelial cell line in acute ischemic stroke by dipyridamole and candesartan

H. Hallevi, I. Hazan-Halevy, E. Paran

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Ischemic stroke is a leading cause of disability. Inflammation of the vessel wall following neutrophil adhesion to vascular endothelium may contribute to ischemic damage. We studied the effect of a platelet inhibitor and an angiotensin II receptor antagonist: alone or in combination, on the adhesion of neutrophils to endothelial cell line in stroke patients. Neutrophils were collected from 12 patients with ischemic stroke within 48 h. Six patients with previous stroke and six healthy volunteers served as control. Neutrophils were incubated with dipyridamole, candesartan or both and allowed to adhere to human endothelial cell line (ECV-304). Adhesion and expression of adhesion molecules (AM) were determined using fluorescence-activated cell-sorting (FACS). Dipyridamole and the combination of dipyridamole and candesartan inhibited significantly the adhesion of neutrophils from ischemic stroke patients as compared to controls with a prominent additive effect. No inhibition was seen in the control groups. These drugs also reduced significantly the expression of the AM Mac-1. Both candesartan and dipyridamole inhibited the adhesion of neutrophils to vascular endothelium in ischemic stroke patients but not in chronic stroke patients or healthy persons. This effect may be related to specific downregulation of Mac-1 by these drugs or other intracellular events.

Original languageEnglish
Pages (from-to)1002-1007
Number of pages6
JournalEuropean Journal of Neurology
Issue number9
StatePublished - 1 Sep 2007
Externally publishedYes


  • Adhesion
  • Ischemic stroke
  • Neutrophils

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology


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