title: Combined use of spinal cord-mimicking partition type scaffold architecture and neurotrophin-3 for surgical repair of completely transected spinal cord in rats.
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.
authors: Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu 226001, China.
authors: Xuesong
authors: X
authors: Wang
authors: Yi
authors: Y
authors: Li
authors: Yinfeng
authors: Y
authors: Gao
authors: Xue
authors: X
authors: Chen
authors: Jian
authors: J
authors: Yao
authors: Weiwei
authors: W
authors: Lin
authors: Ying
authors: Y
authors: Chen
authors: Jie
authors: J
authors: Liu
authors: Yumin
authors: Y
authors: Yang
authors: Xiaodong
authors: X
authors: Wang
mesh_terms: D000818:Animals; D001369:Axons / Q000502:physiology; D009416:Nerve Regeneration; D020933:Neurotrophin 3 / Q000737:chemistry* / Q000378:metabolism; D051381:Rats; D017207:Rats, Sprague-Dawley; D013116:Spinal Cord / Q000473:pathology*; D013119:Spinal Cord Injuries / Q000473:pathology / Q000503:physiopathology / Q000628:therapy*; D023822:Tissue Engineering; D054457:Tissue Scaffolds
chemical_list: D020933:Neurotrophin 3