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Phencyclidine receptors and N-methyl-D-aspartate antagonism: electrophysiologic data correlates with known behaviours.

D Martin, D Lodge

Pharmacology, Biochemistry, and Behavior October 1, 1988 DOI: 10.1016/0091-3057(88)90346-2 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Laboratory study Peer reviewed
Population Cortical wedges and isolated frog spinal cords
Intervention phencyclidine (PCP) and sigma receptor ligands
Key points Phencyclidine receptor ligands, but not sigma or kappa ligands, are selective NMDA antagonists, and their potencies correlate with PCP receptor binding and discrimination studies.

Abstract

Using cortical wedges and isolated frog spinal cords, the potency of a series of psychoactive phencyclidine (PCP) and sigma receptor ligands as antagonists of N-methyl-D-aspartate (NMDA) has been compared with their potency in neurochemical and behavioural studies. Phencyclidine receptor, but not sigma or kappa, ligands were selective antagonists of NMDA on both preparations. Combination studies suggested that dissociative anaesthetics and sigma benzomorphans act at the same site. The relative potencies of the drugs as NMDA antagonists correlated well with their potency in PCP receptor binding studies in vitro and in PCP discrimination studies in vivo.

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