[Modulation of excitation transfer in the intracardiac ganglionic system by the opioid peptide dermorphin].
The aim of the study was to determine whether opioid peptides could modulate the intracardiac ganglionic excitation. It has been shown that postganglionic impulse activity recorded in the frog intracardiac nerve was inhibited by endogenous amphibian opioid peptide-dermorphin (10(-12)-10(-6) M). The inhibition was blocked by naloxone (10(-5) M). Dermorphin (10(-6) M) had no influence on transitory impulse activity in the intracardiac postganglionic sympathetic fibers. It is suggested that opioid peptides take part in the mediatory process in the intracardiac ganglia.
D000701:Analgesics, Opioid / Q000494:pharmacology*; D000818:Animals; D005724:Ganglia / Q000187:drug effects* / Q000502:physiology; D006321:Heart / Q000294:innervation*; D066298:In Vitro Techniques; D009431:Neural Conduction / Q000187:drug effects*; D009842:Oligopeptides / Q000494:pharmacology*; D018847:Opioid Peptides; D011896:Rana temporaria
D000701:Analgesics, Opioid; D009842:Oligopeptides; D018847:Opioid Peptides; C030058:dermorphin
Moduliatsiia peredachi vozbuzhdeniia vo vnutriserdechnom ganglioznom apparate opioidnym peptidom--dermorfinom.