Neurotrophin regulation of cortical dendritic growth requires activity

A Kimberley Usrey, Lawrence C. Katz, Donald C. Lo

Research output: Contribution to journalArticle

399 Citations (Scopus)

Abstract

Neurotrophins have been proposed to mediate several forms of activity- dependent competition in the central nervous system. A key element of such hypotheses is that neurotrophins act preferentially on active neurons; however, little direct evidence supports this postulate. We therefore examined, in ferret cortical brain slices, the interactions between activity and neurotrophins in regulating dendritic growth of layer 4 pyramidal neurons. Inhibition of spontaneous electrical activity, synaptic transmission, or L-type calcium channels each prevented the otherwise dramatic increase in dendritic arborizations elicited by brain-derived neurotrophic factor. In developing cortex, this requirement for conjoint neurotrophin signaling and activity provides a mechanism for selectively enhancing the growth and connectivity of active neurons.

Original languageEnglish (US)
Pages (from-to)1057-1064
Number of pages8
JournalNeuron
Volume17
Issue number6
DOIs
StatePublished - Dec 1996
Externally publishedYes

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Nerve Growth Factors
Growth
Neurons
L-Type Calcium Channels
Ferrets
Neuronal Plasticity
Pyramidal Cells
Brain-Derived Neurotrophic Factor
Synaptic Transmission
Central Nervous System
Brain

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Neurotrophin regulation of cortical dendritic growth requires activity. / Usrey, A Kimberley; Katz, Lawrence C.; Lo, Donald C.

In: Neuron, Vol. 17, No. 6, 12.1996, p. 1057-1064.

Research output: Contribution to journalArticle

Usrey, A Kimberley ; Katz, Lawrence C. ; Lo, Donald C. / Neurotrophin regulation of cortical dendritic growth requires activity. In: Neuron. 1996 ; Vol. 17, No. 6. pp. 1057-1064.
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