NMDA receptors are expressed in oligodendrocytes and activated in ischaemia

Ragnhildur Káradóttir, Pauline Cavelier, Linda H. Bergersen and David Attwell ()
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Ragnhildur Káradóttir: University College London
Pauline Cavelier: University College London
Linda H. Bergersen: University of Oslo
David Attwell: University College London

Nature, 2005, vol. 438, issue 7071, 1162-1166

Abstract: Glial glutamate receptors Oligodendrocytes are the cells in the white matter of the central nervous system that produce and maintain the myelin sheath that insulates the impulse-carrying axon. They are damaged by the neurotransmitter glutamate in diseases as diverse as cerebral palsy, spinal cord injury, stroke and multiple sclerosis. It has become widely accepted that, unlike neurons which are mainly killed by glutamate acting on NMDA receptors, oligodendrocytes lack these receptors and are killed solely by glutamate acting on AMPA/kainate receptors. This thinking has guided therapeutic strategies, but it seems that the underlying assumption about glutamate receptor types may be wrong. Three papers published this week make a convincing case for the presence of NMDA receptors in oligodendrocytes, and for their involvement in causing damage to the cells in injury and disease. This will refocus attention on NMDA receptors as an important therapeutic target for drugs in a variety of neurological disorders.

Date: 2005
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DOI: 10.1038/nature04302

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