Proctolin-like immunoreactivity in dorsal paired median neurons generating plateau action potentials in cockroach Periplaneta americana

The proctolinergic nature of dorsal paired median (DPM) neurons generating plateau action potentials (PAPs) of the cockroach CNS has been demonstrated using a double labelling technique (lucifer yellow staining and proctolin-like immunochemistry). Electrophysiological results support morphological e...

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Bibliographic Details
Published in:Neuroscience research 1997-11, Vol.29 (3), p.263-268
Main Authors: Amat, Corine, Sinakevitch-Pean, Irina, Hue, Bernard
Format: Article
Language:English
Subjects:
Action Potentials
Animals
Axons - physiology
Axons - ultrastructure
Cockroach
Dorsal paired median neuron (DPM)
Electrophysiology - methods
Fluorescent Dyes
Immunohistochemistry - methods
Insect central nervous system
Isoquinolines
Male
Neurites - physiology
Neuritic initiation site
Neurons - cytology
Neurons - physiology
Neuropeptides
Neurotransmitter Agents - analysis
Oligopeptides - analysis
Periplaneta - physiology
Plateau action potential
Proctolin
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Summary:The proctolinergic nature of dorsal paired median (DPM) neurons generating plateau action potentials (PAPs) of the cockroach CNS has been demonstrated using a double labelling technique (lucifer yellow staining and proctolin-like immunochemistry). Electrophysiological results support morphological evidence that a direct pathway exists from axons passing throughout the proctodeal nerves to electrically active DPM neuron somata. However, the occurrence of spike failure along the neuritic membrane and the existence of a neuritic spike initiating site has been postulated because spontaneous PAPs recorded intracellularly were not associated on a one-to-one basis with peripheral axon spikes.
ISSN:0168-0102
1872-8111
DOI:10.1016/S0168-0102(97)00091-6