Neurotropin® Accelerates the Differentiation of Schwann Cells and Remyelination in a Rat Lysophosphatidylcholine-Induced Demyelination Model.
Int J Mol Sci
; 19(2)2018 Feb 08.
Article
en En
| MEDLINE
| ID: mdl-29419802
ABSTRACT
Neurotropin® (NTP), a non-protein extract of inflamed rabbit skin inoculated with vaccinia virus, is clinically used for the treatment of neuropathic pain in Japan and China, although its effect on peripheral nerve regeneration remains to be elucidated. The purpose of this study was to investigate the effects of NTP on Schwann cells (SCs) in vitro and in vivo, which play an important role in peripheral nerve regeneration. In SCs, NTP upregulated protein kinase B (AKT) activity and Krox20 and downregulated extracellular signal-regulated kinase1/2 activity under both growth and differentiation conditions, enhanced the expression of myelin basic protein and protein zero under the differentiation condition. In a co-culture of dorsal root ganglion neurons and SCs, NTP accelerated myelination of SCs. To further investigate the influence of NTP on SCs in vivo, lysophosphatidylcholine was injected into the rat sciatic nerve, leading to the focal demyelination. After demyelination, NTP was administered systemically with an osmotic pump for one week. NTP improved the ratio of myelinated axons and motor, sensory, and electrophysiological function. These findings reveal novel effects of NTP on SCs differentiation in vitro and in vivo, and indicate NTP as a promising treatment option for peripheral nerve injuries and demyelinating diseases.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Polisacáridos
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Células de Schwann
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Lisofosfatidilcolinas
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Diferenciación Celular
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Enfermedades Desmielinizantes
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Remielinización
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Año:
2018
Tipo del documento:
Article