Literature DB >> 7770776

Muscle-derived neurotrophin-4 as an activity-dependent trophic signal for adult motor neurons.

H Funakoshi1, N Belluardo, E Arenas, Y Yamamoto, A Casabona, H Persson, C F Ibáñez.   

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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Year:  1995        PMID： 7770776     DOI： 10.1126/science.7770776

Source DB:  PubMed          Journal:  Science        ISSN： 0036-8075            Impact factor:   47.728


  105 in total

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