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  • Title: Autoradiographic visualisation of [3H]DTG binding to sigma receptors, [3H]TCP binding sites, and L-[3H]glutamate binding to NMDA receptors in human cerebellum.
    Author: Jansen KL, Dragunow M, Faull RL, Leslie RA.
    Journal: Neurosci Lett; 1991 Apr 29; 125(2):143-6. PubMed ID: 1679216.
    Abstract:
    The autoradiographic distributions of [3H]1,3-di-ortho-tolyguanidine ([3H]DTG), [3H]1-[1-(2-thienyl) cyclohexyl] piperidine ([3H]TCP) and L-[3H]glutamate were studied in the human cerebellum. [3H]DTG is a selective label for the sigma receptor, while L-[3H]glutamate binding was carried out under conditions selective for the N-methyl-D-aspartate (NMDA) receptor. [3H]TCP binding sites and sigma receptors showed marked enrichment in the Purkinje cell layer, while L-[3H]glutamate-labelled NMDA receptors showed virtually no binding in the Purkinje cell layer. The results confirm the existence of [3H]TCP binding sites which are not linked to NMDA receptors in the human cerebellum, having a distribution which is more similar to that of the haloperidol-sensitive sigma receptor.
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