Abstract
Preliminary selective block of μ-, δ1-, δ2-, and κ-opioid receptors had no effect on the incidence of ventricular arrhythmias during 10-min coronary occlusion-reperfusion in ketamine-narcotized rats. Repetitive short-term immobilization of rats for 2 weeks improved heart resistance to the arrhythmogenic action of coronary occlusion and reperfusion. Selective μ-opioid receptor antagonist CTAP completely abolished, while selective δ- and κ-opioid receptor antagonists did not modulate the antiarrhythmic effect of adaptation. Probably, endogenous agonists of μ-opioid receptors play an important role in the adaptive improvement of heart resistance to arrhythmogenic factors, but are insignificant for the modulation of heart resistance to the arrhythmogenic action of short-term local ischemia-reperfusion in non-adapted animals.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 139, No. 2, pp. 138–142, February, 2005
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Maslov, L.N., Lishmanov, Y.B., Naryzhnaya, N.V. et al. Role of Endogenous Opioid Receptor Agonists in Regulation of Heart Resistence to the Arrhythmogenic Action of Short-Term Ischemia and Reperfusion. Bull Exp Biol Med 139, 172–175 (2005). https://doi.org/10.1007/s10517-005-0239-9
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DOI: https://doi.org/10.1007/s10517-005-0239-9