Journal
NEUROSCIENTIST
Volume 16, Issue 1, Pages 40-50Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/1073858409339215
Keywords
thrombospondin; TNF-alpha; synaptogenesis; neurexin
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Synaptic plasticity, the ability of neurons to change the number and strength of their synapses, has long been considered the sole province of the neuron. Yet neurons do not function ill isolation, they are a part of elaborate glial networks where they are intimately associated with astrocytes. Astrocytes make extensive contacts with synaptic sites where they release soluble factors that can increase synapse number, provide synaptic insulation restricting the spread of neurotransmitter to neighboring synapses, and release neuroactive compounds, gliotransmitters, that can directly influence synaptic transmission. During periods of synaptogenesis, astrocvte processes are highly mobile kind may contribute to the Stabilization of new synapses. AS our understanding of the extent of their influence at the synapse unfolds, it is clear that astrocytes are well poised to modulate multiple aspects of Synaptic plasticity.
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