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    A preliminary investigation into the effects of antipsychotics on sub-chronic phencyclidine-induced deficits in attentional set-shifting in female rats

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    McLean_Behavioural_Brain_Research_2008.pdf (324.9Kb)
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    Publication date
    2008-05-16
    Author
    McLean, Samantha L.
    Beck, J.P.
    Woolley, M.L.
    Neill, Joanna C.
    Keyword
    Schizophrenia; Set-shifting; Phencyclidine; Rat; Atypical antipsychotics; Haloperidol
    Rights
    © 2008 Elsevier B.V. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
    Peer-Reviewed
    Yes
    
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    Abstract
    Rationale The NMDA receptor antagonist, phencyclidine (PCP), has been shown to induce symptoms characteristic of schizophrenia. A loss in executive function and the ability to shift attention between stimulus dimensions is impaired in schizophrenia; this can be assessed in rodents by the perceptual attentional set-shifting task. Objective The aim of this study was to investigate whether the deficits induced by sub-chronic PCP in attentional set-shifting could be reversed by sub-chronic administration of clozapine, risperidone or haloperidol. Methods Adult female hooded-Lister rats received sub-chronic PCP (2 mg/kg) or vehicle (1 ml/kg) i.p. twice daily for 7 days, followed by a 7-day washout period. PCP-treated rats then received clozapine, risperidone, haloperidol or vehicle once daily for 7 days and were then tested in the perceptual set-shifting task. Results PCP significantly (p < 0.01) increased the number of trials to reach criterion in the EDS phase when compared to vehicle and this deficit was significantly (p < 0.01) attenuated by sub-chronic clozapine (2.5 mg/kg) and risperidone (0.2 mg/kg), but not by sub-chronic haloperidol treatment (0.05 mg/kg). Conclusions These data show that sub-chronic PCP produced a robust deficit within the EDS phase in the attentional set-shifting task, in female rats. Atypical antipsychotics, clozapine and risperidone, but not the classical agent, haloperidol, significantly improved the PCP-induced cognitive deficit.
    URI
    http://hdl.handle.net/10454/8487
    Version
    Accepted Manuscript
    Citation
    McLean SL, Beck JP, Woolley ML and Neill JC (2008) A preliminary investigation into the effects of antipsychotics on sub-chronic phencyclidine-induced deficits in attentional set-shifting in female rats. Behavioural Brain Research. 189(1): 152-158.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.bbr.2007.12.029
    Type
    Article
    Collections
    Life Sciences Publications

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