alexa Migration of Schwann cells from the distal stump of the sciatic nerve 1 week after transection: the effects of insulin and cytosine arabinoside.
Neurology

Neurology

International Journal of Neurorehabilitation

Author(s): Dubov P, Svzensk I

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Abstract We have examined the migratory capacity of Schwann cells from the distal stump of a 1-week transected sciatic nerve of adult rat for a distance of 10 mm. The distal stump was introduced into the open end of a silicone chamber packed with artificial fibrin sponge (Gelaspon) soaked in phosphate-buffered saline (control chambers), cytosine arabinoside (Ara-C) (0.05 mM), or insulin (40 U/ml). Migrating Schwann cells were distinguished from fibroblasts by the presence of non-specific cholinesterase (nChE) activity and glial fibrillary acidic protein (GFAP). The cells of distal stumps including Schwann cells accepted Gelaspon as a suitable adhesive substratum. In the chambers filled with Gelaspon soaked in phosphate-buffered saline alone Schwann cells were outnumbered by fibroblasts. The addition of Ara-C resulted in greater numbers of Schwann cells, which migrate longer distances into the chambers. The application of insulin enhanced Schwann cell migration as well. These morphologic observations were further supported by biochemical measurements of nChE activity. The results suggest an influence on Schwann cell migration by fibroblasts of connective tissue sheaths and a stimulation of Schwann cell migration by insulin. This article was published in Glia and referenced in International Journal of Neurorehabilitation

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