NS 9283 is a positive allosteric modulator of α4β2 subunit-containing nicotinic acetylcholine receptors (nAChRs) that potentiates ACh-induced currents in HEK293 cells expressing human α4β2 subunit-containing nAChRs (EC50 = 4 μM). In vivo, NS 9283 potentiates ABT-594 analgesic efficacy in rat models of carrageenan-induced thermal hyperalgesia, paw skin incision post-operative pain, and monoiodoacetate-induced osteoarthritis. It reduces nicotine, but not sucrose, self-administration and reinstatement in rats when administered at a dose of 3.5 mg/kg.
