Neurochemical transmission in the dorsal column nuclei.
Somatosens Mot Res
; 6(3): 237-51, 1989.
Article
em En
| MEDLINE
| ID: mdl-2567100
ABSTRACT
The transmitter chemistry of the dorsal column nuclei is reviewed, with special emphasis on the monosynaptic component of the dorsal column-medial lemniscal pathway. It is maintained that in this anatomically addressed system concerned mainly with fast, secure sensory transmission, amino acids represent the predominant mechanism used for chemical relay of primary afferent impulses. The major excitatory primary afferent transmitter is most likely glutamic acid, whereas gamma-aminobutyric acid (GABA) fulfills adequately the role of transmitter of recurrent, postsynaptic and presynaptic inhibition. Recent immunohistochemical and physiological evidence indicates that 5-hydroxytryptamine, originating mainly from neurons of the raphé nuclei, plays a modulatory role in dorsal column transmission of innocuous sensory information. The basic synaptic elements involved in transmission across this relay, along with their corresponding chemical identities, are presented in the form of a speculative model.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pele
/
Encéfalo
/
Transmissão Sináptica
/
Neurotransmissores
/
Gânglios Espinais
/
Músculos
Limite:
Animals
Idioma:
En
Revista:
Somatosens Mot Res
Assunto da revista:
NEUROLOGIA
/
PSICOFISIOLOGIA
Ano de publicação:
1989
Tipo de documento:
Article
País de afiliação:
Líbano