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- W2325100053 abstract "Dual probe microdialysis was used to investigate whether GluN2A and GluN2B NMDA receptor subunits regulate striatal output pathways under dyskinetic conditions. The preferential GluN2A antagonist NVP-AAM077 perfused in the dopamine-depleted striatum of 6-hydroxydopamine hemilesioned dyskinetic rats reduced GABA and glutamate levels in globus pallidus whereas the selective GluN2B antagonist Ro 25-6981 elevated glutamate without affecting pallidal GABA. Moreover, intrastriatal NVP-AAM077 did not affect GABA but elevated glutamate levels in substantia nigra reticulata whereas Ro 25-6981 elevated GABA and reduced nigral glutamate. To investigate whether GluN2A and GluN2B NMDA receptor subunits are involved in motor pathways underlying dyskinesia expression, systemic NVP-AAM077 and Ro 25-6981 were tested for their ability to attenuate levodopa-induced abnormal involuntary movements. NVP-AAM077 failed to prevent dyskinesia while Ro 25-6981 mildly attenuated it. We conclude that in the dyskinetic striatum, striatal GluN2A subunits tonically stimulate the striato-pallidal pathway whereas striatal GluN2B subunits tonically inhibit striato-nigral projections. Moreover, GluN2A subunits are not involved in dyskinesia expression whereas GluN2B subunits minimally contribute to it." @default.
- W2325100053 created "2016-06-24" @default.
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- W2325100053 date "2013-04-23" @default.
- W2325100053 modified "2023-10-16" @default.
- W2325100053 title "GluN2A and GluN2B NMDA Receptor Subunits Differentially Modulate Striatal Output Pathways and Contribute to Levodopa-Induced Abnormal Involuntary Movements in Dyskinetic Rats" @default.
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- W2325100053 doi "https://doi.org/10.1021/cn400016d" @default.
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