4.4 Article

Effect of cervical spinal cord hemisection on the expression of axon growth markers

Journal

NEUROSCIENCE LETTERS
Volume 462, Issue 3, Pages 276-280

Publisher

ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2009.06.058

Keywords

Plasticity; Spinal cord injury; Axon growth markers; GAP-43

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Funding

  1. IRME
  2. FRC

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To evaluate the plasticity processes occurring in the spared and injured tissue after partial spinal cord injury, we have compared the level of axon growth markers after a C2 cervical hemisection in rats between the contralateral (spared) and ipsilateral (injured) cervical cord using western blotting and immunohistochemical techniques. In the ipsilateral spinal cord 7 days after injury, although GAP-43 levels were increased in the ventral horn caudal to the injury, they were globally decreased in the whole structure (C1-C6). By contrast, in the contralateral intact side 7 days and 1 month after injury, we have found an increase of GAP-43 and Pill tubulin levels, suggesting that processes of axonal sprouting may occur in the spinal region contralateral to the injury. This increase of GAP-43 in the contralateral spinal cord after cervical hemisection may account, at least partially, to the spontaneous ipsilateral recovery observed after a cervical hemisection. (C) 2009 Published by Elsevier Ireland Ltd.

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