Abstract
It was found that applying 10−8 M oxytocin (OT) affects the functional properties of three types of cholinoreceptors under conditions of voltage clamping at the membrane of identified ganglia neurons inHelix pomatia. This neuropeptide depressed acetycholine-(ACh-)induced sodium-potassium-calcium current in neuron RB3 without altering reversal potential of ACh-induced current. Two (sub-) types of cholinoreceptors were distinguished on the basis of findings on OT effects on ACh-induced chloride currents; ACh-induced chloride current was reduced by the action of OT on the cholinoreceptors of one of these (neuron F4) and increased in the case of neurons D5 and F86. The effects of applying OT and serotonin were reversible but not cumulative. Injection of OT exerted an action on ACh-induced chloride current independent of that of OT application. Involvement of cyclic adenosine monophosphate in OT-induced bimodal modulation of functional properties of three types of cholinoreceptors was demonstrated.
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A. A. Bogomolets Institute of Physiology, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Neirofiziology, Vol. 22, No. 1, pp. 87–93, January–February, 1990.
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Dyatlov, V.A. Modulatory effects of oxytocin on functional properties of three types of cholinoreceptors in molluskan neurons. Neurophysiology 22, 72–77 (1990). https://doi.org/10.1007/BF01052058
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DOI: https://doi.org/10.1007/BF01052058