Dopaminergic control of 125I-labeled neurotensin binding site density in corticolimbic structures of the rat brain

Journal Article · Fri Aug 01 00:00:00 EDT 1986 · Proc. Natl. Acad. Sci. U.S.A.; (United States)

DOI:https://doi.org/10.1073/pnas.83.16.6203· OSTI ID:5023275

Herve, D; Tassin, J P; Studler, J M; Dana, C; Kitabgi, P; Vincent, J P; Glowinski, J; Rostene, W

In the rat brain, destruction of dopaminergic cell groups by injections of 6-hydroxydopamine into the ventral mesencephalic tegmentum results in large decreases in the number of neurotensin binding sites in the mesencephalon and the striatum. In contrast, these lesions produce an increase in the number of /sup 125/I-labeled neurotensin binding sites in the lateral part of the prefrontal cortex despite a large decrease in cortical dopamine levels. Increases in the number of /sup 125/I-labeled neurotensin binding sites in this cortical area as well as in the entorhinal cortex, the nucleus accumbens, and the central part of the striatum were also obtained after chronic blockade of dopamine neurotransmission by a long-acting neuroleptic pipotiazine palmitic ester. We propose that dopamine inputs regulate the density of postsynaptic neurotensin binding sites through cortical and subcortical dopamine receptors. Therefore, some of the clinical effects of neuroleptics in schizophrenic patients could be partly related to changes in neurotensin neurotransmission.

• Research Organization: Institut National de la Sante et de la Recherche Medicale U 114, Paris, France
• OSTI ID: 5023275
• Journal Information: Proc. Natl. Acad. Sci. U.S.A.; (United States), Vol. 16
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
DOPAMINE
BIOLOGICAL FUNCTIONS
PEPTIDES
RECEPTORS
AUTORADIOGRAPHY
CEREBRAL CORTEX
HORMONES
IODINE 125
LABELLED COMPOUNDS
NERVE CELLS
RATS
TISSUE DISTRIBUTION
AMINES
ANIMAL CELLS
ANIMALS
AROMATICS
AUTONOMIC NERVOUS SYSTEM AGENTS
BETA DECAY RADIOISOTOPES
BODY
BRAIN
CARDIOTONICS
CARDIOVASCULAR AGENTS
CENTRAL NERVOUS SYSTEM
CEREBRUM
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
DRUGS
ELECTRON CAPTURE RADIOISOTOPES
FUNCTIONS
HYDROXY COMPOUNDS
INTERMEDIATE MASS NUCLEI
IODINE ISOTOPES
ISOTOPES
MAMMALS
MEMBRANE PROTEINS
NERVOUS SYSTEM
NEUROREGULATORS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
PHENOLS
POLYPHENOLS
PROTEINS
RADIOISOTOPES
RODENTS
SOMATIC CELLS
SYMPATHOMIMETICS
VERTEBRATES
550201* - Biochemistry- Tracer Techniques