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Participation of central kappa-opioid receptor in arrhythmogenesis
Y B Lishmanov1, L N Maslov, D S Ugdyzhekova
1Department of Experimental Cardiology, Institute of Cardiology, Tomsk, Russia.
Life Sciences
|January 1, 1997
Abstract:
The effect of kappa receptors agonists and antagonists was studied in the model of epinephrine induced arrhythmias. Kappa receptor agonists U-50,488 and [D-Ala2]-Dynorphin A (1-13) administered I.C.V. potentiate the arrhythmogenic effect of epinephrine. The effect of U-50,488 was completely blocked by kappa receptor antagonist, nor-binaltorphine. Administration of N-cholinergic receptor inhibitor, hexamethonium, prevented pro-arrhythmic effects of U-50,488 and [D-Ala2]-Dynorphin A (1-13). The data support the hypothesis that central kappa opioid receptors play an important role in the arrhythmogenesis.