[Degeneration of the afferent fibers simulating the effects of motor denervation on skeletal muscle]. / La degenerazione delle fibre afferenti simula gli effetti della denervazione motoria sul muscolo scheletrico.
Boll Soc Ital Biol Sper
; 55(19): 1950-5, 1979 Oct 15.
Article
em It
| MEDLINE
| ID: mdl-554631
ABSTRACT
Degeneration of afferent nerve fibres was induced in rats in order to observe its effects on the properties of the extra-junctional membrane of soleus muscle fibres. In one approach, removal of dorsal root ganglia L4 and L5 was accomplished in preparations with intact or impulse-blocked (with tetrodotoxin containing cuffs around the sciatic nerve) efferent innervation. Spike resistance to tetrodotoxin developed in the inactive deafferented preparations earlier and to a greater extent than in control, that is only impulse-blocked, preparations. In another series of experiments, efferent denervation alone proved to be less effective than the association of efferent and afferent denervation. On the other hand, section of the afferent fibres central to the dorsal root ganglia was without effect. These results are consistent with the interpretation that products of nerve degeneration contribute together with inactivity to the development of the extrajunctional membrane changes observed in skeletal muscle after denervation.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vias Aferentes
/
Vias Eferentes
/
Músculos
/
Degeneração Neural
Limite:
Animals
Idioma:
It
Revista:
Boll Soc Ital Biol Sper
Ano de publicação:
1979
Tipo de documento:
Article