Neurotensin receptors in parkinson's disease and progressive supranuclear palsy: an autoradiographic study in basal ganglia

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Abstract

The technique of receptor autoradiography was used to study the distribution of neurotensin receptors in post mortem brain tissues from patients affected by Parkinson's disease, progressive supranuclear palsy and from age-matched controls. [125I]Neurotensin was used as ligand. Significant receptor decreases were found in the substantia nigra, both pars compacta and reticulata, and in the putamen in Parkinson's disease and progressive supranuclear palsy. In addition, significant decreases of neurotensin receptors were found in the ventral tegmental area, nucleus accumbens and dorsal part of caudate head in patients with Parkinson's disease but not in patients with progressive supranuclear palsy, indicating differential involvement of neurotensin receptors in these two neurological disorders. In addition, both in Parkinson's disease and progressive supranuclear palsy the decrement of striatal neurotensin binding sites was less than expected from the reported decrease of dopamine content in this nucleus, suggesting only partial localization of neurotensin receptors on mesostriatal dopaminergic projections. © 1990.

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Chinaglia, G., Probst, A., & Palacios, J. M. (1990). Neurotensin receptors in parkinson’s disease and progressive supranuclear palsy: an autoradiographic study in basal ganglia. Neuroscience, 39(2), 351–360. https://doi.org/10.1016/0306-4522(90)90273-7

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