[Modulation of the antiarrhythmic effect by endogenous opioids during adaptation to hypoxia in rats]

Autor: Iu B, Lishmanov, E V, Uskina, A V, Krylatov, B Iu, Kondrat'ev, D S, Ugdyzhekova, L N, Maslov
Rok vydání: 1998
Předmět:
Zdroj: Rossiiskii fiziologicheskii zhurnal imeni I.M. Sechenova. 84(4)
ISSN: 0869-8139
Popis: Adaptation of rats to hypoxia increased the heart resistance against arrhythmogenic effects. The Met-enkephaline-Arg6-Phe7 contant increased in the hypothalamus of the adapted animals. The blockers of mu- and delta-opioid receptors reduced the antiarrhythmic effect of the adaptation, whereas chi-receptor inhibitor, nor-binaltorphimine, completely abolished it. The findings suggest the antiarrhythmic effect depends on an increase of the endogenous opioids level and modulated effect of these peptides upon autonomous nervous system.
Databáze: OpenAIRE