Muscle-derived neurotrophin-4 as an activity-dependent trophic signal for adult motor neurons.
Science
; 268(5216): 1495-9, 1995 Jun 09.
Article
em En
| MEDLINE
| ID: mdl-7770776
ABSTRACT
The production of neurotrophin-4 (NT-4) in rat skeletal muscle was found to depend on muscle activity. The amounts of NT-4 messenger RNA present decreased after blockade of neuromuscular transmission with alpha-bungarotoxin and increased during postnatal development and after electrical stimulation in a dose-dependent manner. NT-4 immunoreactivity was detected in slow, type I muscle fibers. Intramuscular administration of NT-4 induced sprouting of intact adult motor nerves. Thus, muscle-derived NT-4 acted as an activity-dependent neurotrophic signal for growth and remodeling of adult motor neuron innervation. NT-4 may thus be partly responsible for the effects of exercise and electrical stimulation on neuromuscular performance.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Músculo Esquelético
/
Neurônios Motores
/
Fatores de Crescimento Neural
Limite:
Animals
Idioma:
En
Ano de publicação:
1995
Tipo de documento:
Article