alexa Distribution and characterization of the [3H]granisetron-labelled 5-HT3 receptor in the human forebrain.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Genetic Syndromes & Gene Therapy

Author(s): Bufton KE, Steward LJ, Barber PC, Barnes NM

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Abstract The present study has demonstrated the distribution of [3H]granisetron-labelled 5-HT3 receptors in the human forebrain with relatively high levels of this receptor in homogenates of hippocampus, caudate nucleus, putamen, nucleus accumbens and amygdala. Lower levels of 5-HT3 receptors were found in other brain regions and the cervical vagus nerve. Pharmacological characterization of the labelled 5-HT3 receptor in human putamen homogenates identified a relatively low affinity for d-tubocurarine compared to the 5-HT3 receptor in NG108-15 neuroblastoma-glioma cell homogenates. In contrast, the affinities of 19 other 5-HT3 receptor ligands were not significantly different for the [3H]granisetron-labelled receptor in these two preparations. Such findings indicate that the human putamen 5-HT3 receptor displays a unique pharmacology which may have significance given the reported clinical potential of compounds active at this receptor when assessed in animal models of disease.
This article was published in Neuropharmacology and referenced in Journal of Genetic Syndromes & Gene Therapy

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