Dopaminergic supersensitivity after neuroleptics: Time-course and specificity

Dopaminergic supersensitivity after neuroleptics: Time-course and specificity 213 60 60 1 1 Pavel Muller Philip Seeman Department of Pharmacology, Faculty of Medicine University of Toronto M5S 1A8 Toronto Ontario Canada Abstract It is known that a single dose of a neuroleptic can elicit dopaminergic supersensitivity in animals. On the other hand, the clinical syndrome of tardive dyskinesia takes many months or years to develop. To resolve this apparent discrepancy, it is possible that subclinical or latent tardive dyskinesia is fully compensated in most patients taking neuroleptics. In others, where the tardive dyskinesia is full-blown and grossly apparent, the dopaminergic supersensitivity may be decompensated. Such compensatory and decompensatory phases have been proposed earlier by Hornykiewicz (1974), in the case of Parkinson's Disease. Dopaminergic supersensivity persists for a period proportional to the length of the neuroleptic treatment. It is not yet clear whether the relation between the length of treatment and the persistence of supersensitivity holds for very long treatments but in principle the relationship might account for the persistence of tardive dyskinesia after years of neuroleptic pretreatment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychopharmacology Springer Journals

Dopaminergic supersensitivity after neuroleptics: Time-course and specificity

Psychopharmacology, Volume 60 (1) – Jan 1, 1978

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Publisher
Springer Journals
Copyright
Copyright © 1978 by Springer-Verlag
Subject
Biomedicine; Pharmacology/Toxicology; Psychiatry
ISSN
0033-3158
eISSN
1432-2072
DOI
10.1007/BF00429171
Publisher site
See Article on Publisher Site

Abstract

213 60 60 1 1 Pavel Muller Philip Seeman Department of Pharmacology, Faculty of Medicine University of Toronto M5S 1A8 Toronto Ontario Canada Abstract It is known that a single dose of a neuroleptic can elicit dopaminergic supersensitivity in animals. On the other hand, the clinical syndrome of tardive dyskinesia takes many months or years to develop. To resolve this apparent discrepancy, it is possible that subclinical or latent tardive dyskinesia is fully compensated in most patients taking neuroleptics. In others, where the tardive dyskinesia is full-blown and grossly apparent, the dopaminergic supersensitivity may be decompensated. Such compensatory and decompensatory phases have been proposed earlier by Hornykiewicz (1974), in the case of Parkinson's Disease. Dopaminergic supersensivity persists for a period proportional to the length of the neuroleptic treatment. It is not yet clear whether the relation between the length of treatment and the persistence of supersensitivity holds for very long treatments but in principle the relationship might account for the persistence of tardive dyskinesia after years of neuroleptic pretreatment.

Journal

PsychopharmacologySpringer Journals

Published: Jan 1, 1978

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