Degenerative and Regenerative Responses of Injured Neurons in the Central Nervous System of Adult Mammals
In adult mammals, the severing of the optic nerve near the eye is followed by a loss of retinal ganglion cells (RGCs) and a failure of axons to regrow into the brain. Experimental manipulations of the non-neuronal environment of injured RGCs enhance neuronal survival and make possible a lengthy axon...
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Published in | Philosophical transactions of the Royal Society of London. Series B. Biological sciences Vol. 331; no. 1261; pp. 337 - 343 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
The Royal Society
29.03.1991
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Subjects | |
Online Access | Get full text |
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Summary: | In adult mammals, the severing of the optic nerve near the eye is followed by a loss of retinal ganglion cells (RGCs) and
a failure of axons to regrow into the brain. Experimental manipulations of the non-neuronal environment of injured RGCs enhance
neuronal survival and make possible a lengthy axonal regeneration that restores functional connections with the superior colliculus.
These effects suggest that injured nerve cells in the mature central nervous system (CNS) are strongly influenced by interactions
with components of their immediate environment as well as their targets. Under these conditions, injured CNS neurons can express
capacities for growth and differentiation that resemble those of normally developing neurons. An understanding of this regeneration
in the context of the cellular and molecular events that influence the interactions of axonal growth cones with their non-neuronal
substrates and neuronal targets should help in the further elucidation of the capacities of neuronal systems to recover from
injury. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-3 content type line 23 ObjectType-Review-1 |
ISSN: | 0962-8436 1471-2970 |
DOI: | 10.1098/rstb.1991.0025 |