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- W2082896627 endingPage "634" @default.
- W2082896627 startingPage "617" @default.
- W2082896627 abstract "The adult central nervous system is capable of considerable anatomical reorganization and functional recovery after injury. Functional outcomes, however, vary greatly, depending upon size and location of injury, type and timing of intervention, and type of recovery and plasticity evaluated. The present study was undertaken to assess the recovery of skilled and unskilled forelimb function in adult rats after a C5/C6 spinal cord over-hemisection and delayed intervention with fetal spinal cord transplants and neurotrophins. Recovery of forelimb function was evaluated during both target reaching (a skilled behavior) and vertical exploration (an unskilled behavior). Anatomical tracing and immunohistochemistry were used to assess the growth of descending raphespinal, corticospinal, and rubrospinal fibers at the injury site, tracts that normally confer forelimb function. Delayed intervention with transplants and either brain-derived neurotrophic factor (BDNF) or neurotrophin-3 (NT-3) restored skilled left forelimb reaching to pre-injury levels. Animals showed recovery of normal reaching movements rather than compensation with abnormal movements. Transplants and NT-3 also improved right forelimb use during an unskilled vertical exploration, but not skilled right reaching. Intervention with fetal transplant tissue supported the growth of descending serotonergic, corticospinal, and rubrospinal fibers into the transplant at the lesion site. The addition of neurotrophins, however, did not significantly increase axonal growth at the lesion site. These studies suggest that the recovery of skilled and unskilled forelimb use is possible after a large cervical spinal cord injury following delayed intervention with fetal spinal cord and neurotrophins. Plasticity of both spared and axotomized descending pathways likely contributes to the functional recovery observed." @default.
- W2082896627 created "2016-06-24" @default.
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- W2082896627 date "2006-05-01" @default.
- W2082896627 modified "2023-09-26" @default.
- W2082896627 title "Delayed Intervention with Transplants and Neurotrophic Factors Supports Recovery of Forelimb Function after Cervical Spinal Cord Injury in Adult Rats" @default.
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- W2082896627 doi "https://doi.org/10.1089/neu.2006.23.617" @default.
- W2082896627 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16689666" @default.