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  • Title: The effects of prostaglandins E2, F2 alpha, prostacyclin, flurbiprofen and aspirin on arrhythmias resulting from coronary artery ligation in anaesthetized rats.
    Author: Coker SJ, Parratt JR.
    Journal: Br J Pharmacol; 1981 Sep; 74(1):155-9. PubMed ID: 7023587.
    Abstract:
    1 Various prostaglandins and inhibitors of prostaglandin synthesis were administered prior to acute coronary artery ligation in anaesthetized rats and their effects were assessed on the number and severity of the resulting early arrhythmias (ventricular ectopic activity; incidence and duration of ventricular tachycardia and of ventricular fibrillation). 2 Prostaglandin E2 (PGE2), PGF2 alpha and prostacyclin all showed antiarrhythmic activity; in contrast flurbiprofen increased the incidence of ventricular fibrillation and mortality. 3 Both the number of ventricular ectopic beats and the incidence of ventricular fibrillation were reduced by aspirin. 4 The results suggest that the release of endogenous PGE2, PGF2 alpha and prostacyclin could reduce early post-infarction ventricular arrhythmias whilst the protective effect of aspirin in this model adds further support for the hypothesis that thromboxane release is involved in the genesis of these arrhythmias.
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