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Neurotensin receptor binding levels in basal ganglia are not altered in Huntington's chorea or schizophrenia

Journal Article · · Synapse (New York); (USA)
; ; ; ;  [1]
  1. Sandoz Pharma Ltd., Basel (Switzerland)
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Autoradiographic techniques were used to examine the distribution and levels of neurotensin receptor binding sites in the basal ganglia and related regions of the human brain. Monoiodo ({sup 125}I-Tyr3)neurotensin was used as a ligand. High amounts of neurotensin receptor binding sites were found in the substantia nigra pars compacta. Lower but significant quantities of neurotensin receptor binding sites characterized the caudate, putamen, and nucleus accumbens, while very low quantities were seen in both medial and lateral segments of the globus pallidus. In Huntington's chorea, the levels of neurotensin receptor binding sites were found to be comparable to those of control cases. Only slight but not statistically significant decreases in amounts of receptor binding sites were detected in the dorsal part of the head and in the body of caudate nucleus. No alterations in the levels of neurotensin receptor binding sites were observed in the substantia nigra pars compacta and reticulata. These results suggest that a large proportion of neurotensin receptor binding sites in the basal ganglia are located on intrinsic neurons and on extrinsic afferent fibers that do not degenerate in Huntington's disease.

OSTI ID:
5800954
Journal Information:
Synapse (New York); (USA), Journal Name: Synapse (New York); (USA) Vol. 7:2; ISSN 0887-4476; ISSN SYNAE
Country of Publication:
United States
Language:
English

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