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  • Title: Dextrorphan and dextromethorphan attenuate glutamate neurotoxicity.
    Author: Choi DW.
    Journal: Brain Res; 1987 Feb 17; 403(2):333-6. PubMed ID: 2881608.
    Abstract:
    The dextrorotatory morphinan opioid, dextrorphan, which has recently been reported to block the excitation of cortical neurons by N-methyl-D-aspartate, was found at 10-100 microM concentrations to attenuate both morphological and chemical evidence of glutamate neurotoxicity in murine neocortical cell cultures; a similar effect was found with its methyl ester derivative, dextromethorphan. Given other data suggesting that glutamate neurotoxicity may participate in the pathogenesis of the central neuronal loss associated with certain human neurological diseases, the present observations raise the possibility that these clinically tested opioids, or related compounds, may eventually prove to have some clinical therapeutic utility.
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