Summary
The regional prevention by neuroleptic drugs of specificin vivo 3H-spiperone binding was studied in the rat brain. L-sulpiride, thioridazine and clozapine were found to reduce the3H-spiperone binding selectively in the olfactory tubercle, septum, substantia nigra region and frontal cortex but not the striatum at dose levels which preferentially block apomorphine (APO) induced hyperactivity. The maximal prevention of specific3H-spiperone binding by l-sulpiride and clozapine reached 60–80% in the former structures while the displacement of striatal3H-spiperone binding did not exceed 40%. In contrast to l-sulpiride, thioridazine and clozapine both chlorpromazine and haloperidol reduced the3H-spiperone binding to the same extent in all regions studied. Chlorpromazine and haloperidol were potent in prevention of striatal3H-spiperone bindingin vivo which reached 60–80% in this structure.
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Köhler, C., Haglund, L., Ögren, S.O. et al. Regional blockade by neuroleptic drugs ofin vivo 3H-spiperone binding in the rat brain. Relation to blockade of apomorphine induced hyperactivity and stereotypies. J. Neural Transmission 52, 163–173 (1981). https://doi.org/10.1007/BF01249601
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DOI: https://doi.org/10.1007/BF01249601