Effect of therapy on platelet activating factor-induced aggregation in acute stroke.

Abstract:

:Platelet activating factor, a potent inducer of in vivo platelet activation and thrombosis, has been shown to be excessively active in acute ischemic stroke patients. Therefore, we studied the effect of aspirin/dipyridamole therapy in inhibiting platelet activating factor-induced platelet activation in acute ischemic stroke patients, 23 taking aspirin/dipyridamole and 21 untreated. Aspirin/dipyridamole-treated patients failed to show suppression of platelet activating factor-induced platelet aggregation even though collagen-induced activation was inhibited, suggesting that platelet activating factor acts by cyclooxygenase-independent mechanisms. Failure to suppress cyclooxygenase-independent mechanisms of platelet activation may explain the limited usefulness of current antiplatelet therapy, aspirin in particular, in stroke prevention. The role of selective platelet activating factor antagonists both in isolation and combined with aspirin needs to be investigated for their usefulness in the treatment and prevention of ischemic stroke.

journal_name

Stroke

journal_title

Stroke

authors

Joseph R,Welch KM,D'Andrea G

doi

10.1161/01.str.20.5.609

subject

Has Abstract

pub_date

1989-05-01 00:00:00

pages

609-11

issue

5

eissn

0039-2499

issn

1524-4628

journal_volume

20

pub_type

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