Axonal regeneration of proctolinergic neurons in the central nervous system of the locust

Brain Res Dev Brain Res. 2004 May 19;150(1):73-6. doi: 10.1016/j.devbrainres.2004.02.006.

Abstract

We provide evidence for axonal regeneration in the central nervous system (CNS) of the locust (Locusta migratoria). We followed the morphology of a small set of proctolin-immunoreactive neurons in the ventral nerve cord before and after crushing one cervical connective in the third instar. The proximal segments started sprouting within 3 days post lesion and grew into the suboesophageal ganglion within 9 days, covering a distance of approximately 2 mm. Within the suboesophageal ganglion, the regenerated neurites formed arborisations in the appropriate region which closely resemble the original shape. These findings will allow us to compare regeneration to the well-described embryonic development of axonal connectivity in this animal.

MeSH terms

  • Animals
  • Central Nervous System / cytology
  • Central Nervous System / physiology*
  • Denervation
  • Ganglia, Invertebrate / cytology
  • Ganglia, Invertebrate / growth & development
  • Ganglia, Invertebrate / metabolism
  • Grasshoppers
  • Growth Cones / metabolism
  • Growth Cones / physiology*
  • Growth Cones / ultrastructure
  • Immunohistochemistry
  • Nerve Regeneration / physiology*
  • Neural Pathways / cytology
  • Neural Pathways / growth & development
  • Neural Pathways / metabolism
  • Neuropeptides*
  • Oligopeptides / metabolism*

Substances

  • Neuropeptides
  • Oligopeptides
  • proctolin