[The presynaptic mechanisms enhancing the reactivity of the command neurons in the defensive behavior of the edible snail against the background of the action of a vasopressin analog].
No variations in the synaptic efficiency of a direct monosynaptic pathway of the defensive reflex have been found. At the same time total EPSPs in command neurons to nerve stimulation grow. The number of spikes with short latencies in secondary sensory neurons increases. Moreover, application of the vasopressin analog induces a rise in the frequency and long-term amplitude of spontaneous EPSPs in these neurons. Efficiency of transmission between peptide-activated cells and secondary sensory neurons remained high after washing, while cell reactivity grows only in the presence of the peptide.
Kudriashova
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D000200:Action Potentials / Q000187:drug effects / Q000502:physiology; D000818:Animals; D001127:Arginine Vasopressin / Q000031:analogs & derivatives* / Q000494:pharmacology; D004558:Electric Stimulation; D004924:Escape Reaction / Q000187:drug effects* / Q000502:physiology; D066298:In Vitro Techniques; D009474:Neurons / Q000187:drug effects* / Q000502:physiology; D017981:Receptors, Neurotransmitter / Q000187:drug effects* / Q000502:physiology; D012908:Snails / Q000187:drug effects* / Q000502:physiology
D017981:Receptors, Neurotransmitter; D001127:Arginine Vasopressin; C015119:argipressin, des-GlyNH2(9)-
Presinapticheskie mekhanizmy usileniia reaktivnosti komandnykh neĭronov oboronitel'nogo povedeniia vinogradnoĭ ulitki na fone deĭstviia analoga vazopressina.