Psychopharmacology

, Volume 82, Issue 1–2, pp 135–139

Atypical neuroleptics increase self-administration of cocaine: An evaluation of a behavioural screen for antipsychotic activity

  • David C. S. Roberts
  • Gary Vickers
Original Investigations

Abstract

Several drugs have been shown to exert antipsychotic effects, yet they display an atypical profile with respect to standard neuroleptic drug screens. Low doses of traditional neuroleptics are known to increase self-administration of psychomotor stimulants; we sought to determine whether these atypical drugs would cause a comparable effect. Sulpiride, metoclopramide and thioridazine produced a dose-dependent increase in cocaine intake similar to that found for chlorpromazine, haloperidol, pimozide and flupenthixol. This effect was found to correlate (r=0.94) with daily clinical dose. Clozapine, however, produced a dose-dependent decrease in cocaine intake. The advantages and disadvantages of using this measure as a screening procedure for neuroleptic drugs are discussed.

Key words

Atypical neuroleptics Cocaine self-administration Haloperidol Chlorpromazine Pimozide Flupenthixol Sulpiride Metoclopramide Clozapine Thioridazine Rat 

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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • David C. S. Roberts
    • 1
  • Gary Vickers
    • 1
  1. 1.Department of PsychologyCarleton UniversityOttawaCanada

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