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The Neuroscientist, Vol. 10, No. 4, 280-285 (2004)
DOI: 10.1177/1073858404263511

Intrinsic Regenerative Ability of Mature CNS Neurons

Jyoti A. Chuckowree

Tracey C. Dickson

James C. Vickers

University of Tasmania Hobart, Tasmania, Australia

A prevailing view in neuroscience is that the mature CNS has relatively little capacity to respond adaptively to injury. Recent data indicating a high degree of structural plasticity in the adult brain provides an impetus to reexamine how central neurons react to trauma. An analysis of both in vivo and in vitro experimental studies demonstrates that certain brain neurons may have an intrinsic ability to respond to structural injury by an attempt at regenerative sprouting. Indeed, aberrant sprouting following neuronal injury may be the cause of epilepsy following brain trauma and may underlie the neuronal changes stimulated by plaque formation in Alzheimer’s disease. An understanding of the stereotypical reaction to injury of different CNS neurons, as well as the role of nonneuronal cells, may provide new avenues for therapeutic intervention for a range of neurodegenerative diseases and "acquired" forms of CNS injury.

Key Words: Regeneration • CNS • Cortex • Axon • Head trauma • Alzheimer


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