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  • Title: The quantitative autoradiographic distribution of [3H]MK-801 binding sites in the normal human spinal cord.
    Author: Shaw PJ, Ince PG, Johnson M, Perry EK, Candy J.
    Journal: Brain Res; 1991 Jan 18; 539(1):164-8. PubMed ID: 1826627.
    Abstract:
    The distribution of NMDA receptors in the normal human spinal cord has been investigated using the non-competitive channel blocking agent MK-801. Specific [3H]MK-801 binding was present throughout the spinal grey matter at all segmental levels, the greatest density of binding being found in the substantia gelatinosa. Focal areas of high binding were also found in a distribution corresponding to lower motor neurones in the ventral horns. This study provides anatomical evidence that NMDA receptors are likely to be important in motor as well as sensory spinal synaptic transmission. The anatomical distribution of NMDA receptors in relation to motor neurone somata may have important implications in selective vulnerability to excitotoxic injury.
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