Positive allosteric modulator of theα7 neuronal
nicotinic acetylcholine receptor and the purinergic P2X4 receptor.
Antihelmintic. Also modulates glutamate- and GABA-activated chloride channels.
Potentiates glycine-gated currents at low concentrations (30 nM).
Merck
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Displays 26-fold and > 440-fold selectivity over kainate and NMDA receptors respectively. Neuro-protective; delays neuronal death in a global ischaemia model and cerebral infarction in a focal ischaemia model.