L-Glutamic acid-15N is the 15N-labeled version of L-Glutamic acid, an excitatory neurotransmitter and an agonist at metabotropic, kainate, NMDA, and AMPA glutamate receptor subtypes. It directly activates the release of dopamine (DA) from dopaminergic terminals.
NBQX, also known as FG9202, is an AMPA receptor antagonist. NBQX blocks AMPA receptors in micromolar concentrations (~10–20 µM) and also blocks kainatereceptors. In experiments, it is used to counter glutamate excitotoxicity. NBQX was found to have anticonvulsant activity in rodent seizure models. As the disodium salt, NBQX is soluble in water at high concentrations (at least up to 100 mM).
EGIS-8332 is a potent and selective non-competitive AMPA receptor antagonist. EGIS-8332 inhibits AMPA kainate ion channels and cell death. EGIS-8332 inhibited AMPA currents in rat cerebellar Purkinje cells and inhibited the AMPA- and quisqualate-induced excitotoxicity in primary cultures of telencephalon neurons (IC(50)=5.1-9.0 microM), in vitro. EGIS-8332 seems suitable for further development for the treatment of epilepsy, ischaemia and stroke based on its efficacy in a variety of experimental disease models, and on its low side effect potential.