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OBJECTIVE: The purpose of the current analysis was to investigate the direct inhibitory effects of perampanel and other anti-seizure medications (ASMs) on the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA), N-methyl-D-aspartic acid (NMDA), and kainate glutamate receptor subtypes using electrophysiological assessments. METHODS: ) values were determined based on sigmoidal-curve fitting using GraphPad Prism software. RESULTS: values of 930,000 and 1,000,000 nM, respectively. SIGNIFICANCE: Only a few ASMs evaluated in this study showed direct interaction with ionotropic glutamate receptors. Perampanel is the only ASM that had a potent inhibitory effect on all AMPA receptor subtypes, but did not inhibit NMDA or kainate receptor subunits; while phenobarbital inhibited GluA2(R), and carbamazepine and lamotrigine inhibited the NMDA receptor at high concentration ranges.
Fukushima et al. (Sat,) studied this question.
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