Nerve Terminal Sprouting
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. O oxido nitrico na plasticidade das celulas de Schwann terminais e dos terminais nervosos da junção neuromuscular
Músculos distróficos apresentam alterações no complexo distrofinaglicoproteínas, bem como ausência da enzima óxido nítrico sintase neuronal, associada a alterações na estrutura da junção neuromuscular. No presente trabalho, estudamos as respostas dos terminais nervosos e das células de Schwann terminais após lesão nervosa, na ausência de óxi
Publicado em: 2005
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2. Sera from patients with motor neuron disease and associated paraproteinaemia fail to inhibit experimentally induced sprouting of motor nerve terminals.
IgG kappa paraproteinaemia was discovered in one patient with amyotrophic lateral sclerosis and one with chronic spinal muscular atrophy. Serum from these patients was injected into mouse muscles paralysed by botulinum toxin which is known to induce sprouting from motor nerve terminals. Daily injection of serum for 7 days failed to inhibit terminal sprouting
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3. Incoming synapses and size of small granule-containing cells in a rat sympathetic ganglion after post-ganglionic axotomy.
A quantitative ultrastructural study has been made of the reaction of the incoming synapses of small granule-containing cells after axotomy of the major post-ganglionic branches of the superior cervical ganglion of the young adult rat. These cells are intrinsic and interneurone-like in this ganglion, receiving a preganglionic input and giving outgoing synaps
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4. Evidence for a Conserved Function in Synapse Formation Reveals Phr1 as a Candidate Gene for Respiratory Failure in Newborn Mice
Genetic studies using a set of overlapping deletions centered at the piebald locus on distal mouse chromosome 14 have defined a genomic region associated with respiratory distress and lethality at birth. We have isolated and characterized the candidate gene Phr1 that is located within the respiratory distress critical genomic interval. Phr1 is the ortholog o
American Society for Microbiology.
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5. Light and electron microscopic identification of nerve terminal sprouting and retraction in normal adult frog muscle.
A combined light and electron microscopic study was performed on neuromuscular junctions of normal adult frogs. In a previous investigation signs of new synapse formation, as well as abandoned former synaptic sites, have been observed in normal muscles (Wernig, Pécot-Dechavassine & Stöver, 1980a, b). Here we performed a detailed light and electron microsco
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6. Motor unit size and synaptic competition in rat lumbrical muscles reinnervated by active and inactive motor axons.
The size of motor units has been measured in adult rat muscles reinnervated by active and inactive motor axons. The results suggest that active nerve terminals have a competitive advantage over inactive terminals during neuromuscular synapse elimination. The experiments were done using the fourth deep lumbrical muscle in the rat hind foot, which receives its
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7. Miniature end-plate potentials in rat skeletal muscle poisoned with botulinum toxin.
Spontaneous transmitter release, recorded as miniature end-plate potentials (m.e.p.p.s), was studied in rat extensor digitorum longus (e.d.l.) and soleus muscles partially or completely paralysed by botulinum toxin type A (BoTx). Normal unpoisoned muscles were examined for comparison. Analysis of m.e.p.p.s in both normal and BoTx-poisoned muscles confirmed t