Transcriptional changes in sensory ganglion associated with primary afferent collateral sprouting in spared dermatome model

Primary afferent collateral sprouting (PACS) is a process whereby non-injured primary afferent neurons respond to some stimulus by extending new branches from existing axons. In the model used here (spared dermatome), the intact sensory neurons respond to the denervation of adjacent areas of skin by sprouting new axon branches into that adjacent denervated territory. Neurons of both the central and peripheral nervous systems undergo this process, which contributes to both adaptive and maladaptive plasticity. Investigations of gene expression changes associated with PACS can provide a better understanding of the molecular mechanisms controlling this process. Consequently, it can be used to develop treatment for spinal cord injury to promote functional recovery.

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Harrison BJ, Venkat G, Hutson T, Rau KK, Bunge MB, Mendell LM, Gage FH, Johnson RD, Hill C, Rouchka EC, Moon L, Petruska JC