Differential effects of dextrorphan and levorphanol on the excitation of rat spinal neurons by amino acids
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Add time:09/27/2019 Source:sciencedirect.com
The effects of the stereoisomers dextrorphan and levorphanol on the excitation of spinal neurons by electrophoretically administered excitatory amino acids were studied in pentobarbitone-anaesthetised rats. Both isomers reduced responses to N-methyl-DL-aspartate (NMA), dextrorphan being both more selective and more potent than levorphanol in this respect. This observation supports the purposal that the NMA-blocking activity of a variety of drugs with psychotomimetic properties is subserved by actions at phencyclidine (PCP)/σ opiate receptors.
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