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Dopamine, acting at a D 1 -like receptor, depresses the release of glutamate in the nucleus accumbens (NAcc) in brain slices, thereby reducing the amplitude of the excitatory postsynaptic current (EPSC). This effect depends upon an inhibitory feedback action of adenosine, liberated following facilitation of postsynaptic NMDA receptors by D 1 receptor activation, an action independent...
Metabotropic glutamate receptors (mGlus) are known to modulate synaptic transmission in various pathways of the central nervous system, but the exact mechanisms by which this modulation occurs remain unclear. Here we utilise electrophysiological and immunocytochemical techniques on cultured autaptic hippocampal neurones to investigate the mechanism of action and distribution of mGlus. Agonists at...
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