Combined use of spinal cord-mimicking partition type scaffold architecture and neurotrophin-3 for surgical repair of completely transected spinal cord in rats.

TitleCombined use of spinal cord-mimicking partition type scaffold architecture and neurotrophin-3 for surgical repair of completely transected spinal cord in rats.
Publication TypeJournal Article
Year of Publication2013
AuthorsWang X, Li Y, Gao Y, Chen X, Yao J, Lin W, Chen Y, Liu J, Yang Y, Wang X
JournalJournal of biomaterials science. Polymer edition
Volume24
Issue8
Pagination927-39
Date Published2013
Abstract

A body of evidence has suggested that tissue-engineered nerve grafts hold promise for the surgical repair of spinal cord injuries. In this study, a novel nerve graft was prepared to be implantated into a 5 mm gap which was caused by a complete transection of the rat spinal cord. The graft was featured by incorporation of neurotrophin-3 into a chitosan-based tube scaffold with a spinal cord-mimicking, partition-type architecture, which was prepared based on the morphometric insights of normal spinal cord anatomy. A set of behavioral, functional, and histological examinations were carried out to evaluate the repair. Results from Basso, Beattie, and Bresnahan tests, motor evoked potential measurements, anterograde tracing, and histological analyses suggested that the combined application of chitosan as the scaffold biomaterial, a spinal cord-mimicking partition-type as the scaffold architecture, and neurotrophin-3 (NT-3) as the bioactive component might probably create synergetic promotion on spinal cord regeneration. This composite nerve graft yielded significantly better results in axonal regeneration and function restoration as compared to its scaffold alone or other types of hollow tube scaffold alone.

DOI10.1107/S1600536813013056
Alternate JournalJ Biomater Sci Polym Ed