Abstract:Glutamate transporters preserve the spatial specificity of synaptic transmission by limiting glutamate diffusion away from the synaptic cleft, and prevent excitotoxicity by keeping the extracellular concentration of glutamate at low nanomolar levels. Glutamate transporters are abundantly expressed in astrocytes. Previous estimates in the rat hippocampus suggest that the surface density of glutamate transporters in astrocytic membranes is ~10,800 μm−2. Here, we estimate their surface density in astrocytic membr… Show more
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