Selective activation of group-II metabotropic glutamate receptors is protective against excitotoxic neuronal death - PubMed (original) (raw)
Comparative Study
Selective activation of group-II metabotropic glutamate receptors is protective against excitotoxic neuronal death
G Battaglia et al. Eur J Pharmacol. 1998.
Abstract
Aminopyrrolidine-2R,4R-dicarboxylated (2R,4R-APDC) has recently been introduced as a potent and highly selective agonist of metabotropic glutamate (mGlu) receptor subtypes mGlu2 and -3. In murine cortical cultures containing both neurons and astrocytes, 2R,4R-APDC attenuated the delayed neuronal degeneration induced by a 10-min pulse of N-methyl-D-aspartate (NMDA). 2R,4R-APDC was maximally neuroprotective in a range of concentrations (0.1-1 microM) comparable to that reported for the activation of mGlu2 or -3 receptors in heterologous expression systems. The action of 2R,4R-APDC was sensitive to the mGlu2/3 receptor antagonists, (2S)-alpha-ethylglutamate and (2S,1S',2S',3R')-2-(2'-carboxy-3'-phenylcyclopropyl)glycine. These results indicate that activation of mGlu2 and/or -3 receptors is sufficient per se to protect neurons against excitotoxic degeneration, and encourage the search for potent, selective and systemically active mGlu2/3 receptor agonists as neuroprotective drugs.
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