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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

D-serine, an endogenous synaptic modulator: localization to astrocytes and glutamate-stimulated release.

Using an antibody highly specific for D-serine conjugated to glutaraldehyde, we have localized endogenous D-serine in rat brain. Highest levels of D-serine immunoreactivity occur in the gray matter of the cerebral cortex, hippocampus, anterior olfactory nucleus, olfactory tubercle, and amygdala. Localizations of D-serine immunoreactivity correlate closely with those of D-serine binding to the glycine modulatory site of the N-methyl-D-aspartate (NMDA) receptor as visualized by autoradiography and are inversely correlated to the presence of D-amino acid oxidase. D-Serine is enriched in process-bearing glial cells in neuropil with the morphology of protoplasmic astrocytes. In glial cultures of rat cerebral cortex, D-serine is enriched in type 2 astrocytes. The release of D-serine from these cultures is stimulated by agonists of non-NMDA glutamate receptors, suggesting a mechanism by which astrocyte-derived D-serine could modulate neurotransmission. D-Serine appears to be the endogenous ligand for the glycine site of NMDA receptors.[1]

References

  1. D-serine, an endogenous synaptic modulator: localization to astrocytes and glutamate-stimulated release. Schell, M.J., Molliver, M.E., Snyder, S.H. Proc. Natl. Acad. Sci. U.S.A. (1995) [Pubmed]
 
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