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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

In vivo predegeneration of peripheral nerves: an effective technique to obtain activated Schwann cells for nerve conduits.

In vivo predegeneration of peripheral nerves is presented as a convenient and effective method to obtain activated Schwann cells and an enhanced cell yield following in vitro cultivation. The experiments conducted in rats were aimed at clinical use in gaining Schwann cell suspensions for filling artificial conduits in order to bridge peripheral nerve gaps. The rat sciatic nerve used as a model was transected distally to the spinal ganglia. Predegeneration in vivo was allowed to take place for 1, 2, 3 and 4 days and up to 1, 2 and 3 weeks. The nerve was then resected and prepared for cell cultivation. Schwann cells cultivated from the contralateral untreated nerve served as control. Immunostaining for S100, nerve growth factor receptor and the adhesion molecules N-cadherin and L1 was used to characterize the general state of the cultures. Viability was assessed by fluorescein fluorescence staining, and the proliferation index was determined by bromodeoxyuridine-DNA incorporation. The Schwann cells from predegenerated nerves revealed an increased proliferation rate compared to the control, whereas fibroblast contamination was decreased. Best results were obtained 1 week after predegeneration.[1]

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