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Auditory brainstem: Development and plasticity of GAP-43 mRNA expression in the rat by Illing, R.-B.; Cao, Q.L.; Frster, C.R.; Laszig, R. is a Neuroscience article available to read on EtoBox.

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Expression of the growth and plasticity associated protein GAP-43 is closely related to synaptogenesis and synaptic remodeling in the developing as well as in the mature nervous system. We have studied the postnatal development of GAP-43 mRNA expression in the auditory brainstem and determined the time course of its reexpression following deafening through cochlear ablation using a digoxigenin-coupled mRNA probe. By the first postnatal day, GAP-43 mRNA was expressed at high levels in all auditory brainstem nuclei. But whereas GAP-43 mRNA is almost entirely lost in most of these nuclei in the adult animal, significant levels of this molecule are retained in the inferior colliculus and, most notably, in the lateral and medial superior olivary nucleus. As a consequence of unilateral cochleotomy, GAP-43 mRNA rose dramatically in some neurons of the ipsilateral lateral superior olive, whereas the hybridization signal decreased in others. Using double staining protocols, we found that those olivary neurons that increase their level of GAP-43 mRNA appear to be identical with the cells developing strong GAP-43 immunoreactivity after cochleotomy. By combining axonal tracing with in situ hyb

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Author

Illing, R.-B.; Cao, Q.L.; Frster, C.R.; Laszig, R.

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 0021-9967)

Published

1999

Language

EN

Field

Neuroscience (Life Sciences)