Neuroscience Bulletin

, Volume 29, Issue 4, pp 402–410

Axonal regeneration after spinal cord injury in zebrafish and mammals: differences, similarities, translation

Authors

    • Department of Physical Medicine & RehabilitationUniversity of Pittsburgh
  • Jeffery A. Plunkett
    • Department of School of Science, Technology and Engineering ManagementSt. Thomas University
  • Alexis Tapanes-Castillo
    • Department of School of Science, Technology and Engineering ManagementSt. Thomas University
    • Department of Physical Medicine & RehabilitationUniversity of Pittsburgh
    • Department of NeurobiologyUniversity of Pittsburgh
    • Department of BioengineeringUniversity of Pittsburgh
Review

DOI: 10.1007/s12264-013-1361-8

Cite this article as:
Vajn, K., Plunkett, J.A., Tapanes-Castillo, A. et al. Neurosci. Bull. (2013) 29: 402. doi:10.1007/s12264-013-1361-8

Abstract

Spinal cord injury (SCI) in mammals results in functional deficits that are mostly permanent due in part to the inability of severed axons to regenerate. Several types of growth-inhibitory molecules expressed at the injury site contribute to this regeneration failure. The responses of axons to these inhibitors vary greatly within and between organisms, reflecting axons’ characteristic intrinsic propensity for regeneration. In the zebrafish (Danio rerio) many but not all axons exhibit successful regeneration after SCI. This review presents and compares the intrinsic and extrinsic determinants of axonal regeneration in the injured spinal cord in mammals and zebrafish. A better understanding of the molecules and molecular pathways underlying the remarkable individualism among neurons in mature zebrafish may support the development of therapies for SCI and their translation to the clinic.

Keywords

spinal cord injuryaxonal regenerationgrowth inhibitionfunctional recoveryzebrafish
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Copyright information

© Shanghai Institutes for Biological Sciences, CAS and Springer-Verlag Berlin Heidelberg 2013