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Functional repair of the corticospinal tract by delayed transplantation of olfactory ensheathing cells in adult rats

Keyvan-Fouladi, N.; Raisman, G.; Li, Y.; (2003) Functional repair of the corticospinal tract by delayed transplantation of olfactory ensheathing cells in adult rats. The Journal of Neuroscience , 23 (28) pp. 9428-9434. Green open access

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Abstract

Adult rats were trained to use their forepaws to retrieve a piece of food. Destruction of the dorsal corticospinal tract on one side at the level of the first cervical segment abolished the use of the ipsilateral forepaw for retrieval for at least 6 months after operation. Where a variable amount of the corticospinal tract was spared, there was a proportionate persistence of retrieval. In lesioned rats that had shown no retrieval for 8 weeks after operation, a suspension of olfactory ensheathing cells was injected into the lesion site. Starting between 1 and 3 weeks after transplantation, all rats with transplants bridging the lesion site resumed retrieval by the ipsilateral forepaw. Biotin dextran anterograde tracing shows regenerating corticospinal axons crossing the bridge, traveling caudally for ~10 mm in the distal part of the corticospinal tract and forming terminal arborizations in the spinal gray matter. Functional recovery can occur when only ~1% of the corticospinal tract axons are present.

Type: Article
Title: Functional repair of the corticospinal tract by delayed transplantation of olfactory ensheathing cells in adult rats
Open access status: An open access version is available from UCL Discovery
Publisher version: http://www.jneurosci.org/cgi/content/abstract/23/2...
Language: English
Additional information: Published by the Society for Neuroscience This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. The license allows you to copy, distribute, and transmit the work, as well as adapting it. However, you must attribute the work to the author (but not in any way that suggests that they endorse you or your use of the work), and cannot use the work for commercial purposes without prior permission of the author. If you alter or build upon this work, you can distribute the resulting work only under the same or similar license to this one. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.
Keywords: Spinal cord, axon, lesion, CNS, function, transplantation, OECs, delayed, regeneration, adult, repair
UCL classification: UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Brain Repair and Rehabilitation
URI: https://discovery.ucl.ac.uk/id/eprint/7638
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