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Implications of Positron Emission Tomography Research for the Investigation of the Actions of Antipsychotic Drugs

Published online by Cambridge University Press:  06 August 2018

Stephen J. List  and
John M. Cleghorn
Stephen J. List*
Affiliation:
McMaster University
John M. Cleghorn
Affiliation:
Clarke Institute of Psychiatry, Toronto, and Professor Emeritus of Psychiatry, McMaster University, Hamilton
*
∗Faculty of Health Sciences, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
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Abstract

Positron emission tomography studies of regional brain metabolic activity, cerebral blood flow and D2 dopamine receptor binding in schizophrenics and controls are reviewed. Methodological influences on the validity of the data generated by these technologies include problems with measurement as well as clinical and anatomical heterogeneity. Work in these fields to date, however, has produced strong support for the role of D2 dopamine receptor blockade in antipsychotic efficacy. Neuroleptic-induced changes in regional brain metabolism over time have also been observed; however, the relationship between such actions and symptomatic change needs to be further clarified. Future studies on time-course of neuroleptic-associated changes in regional brain metabolism, blood flow and dopamine receptor binding in schizophrenics have the potential to provide greater insight into the relationship of these actions to symptomatic changes and drug-induced side-effects.

Type
Research Article
Information
The British Journal of Psychiatry , Volume 163 , Issue S22: The Psychopharmacology of Schizophrenia , December 1993 , pp. 25 - 30
Copyright
Copyright © 1993 The Royal College of Psychiatrists 

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