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Effects of quetiapine and sertindole on subchronic ketamine-induced deficits in attentional set-shifting in rats
RATIONALE: Prefrontal cortical dysfunctions, including an impaired ability to shift perceptual attentional set, are core features of schizophrenia. Nevertheless, the effectiveness of second-generation antipsychotic drugs in treating specific prefrontal dysfunctions remains equivocal. OBJECTIVES: To...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer-Verlag
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3276756/ https://www.ncbi.nlm.nih.gov/pubmed/21918808 http://dx.doi.org/10.1007/s00213-011-2487-x |
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author | Nikiforuk, Agnieszka Popik, Piotr |
author_facet | Nikiforuk, Agnieszka Popik, Piotr |
author_sort | Nikiforuk, Agnieszka |
collection | PubMed |
description | RATIONALE: Prefrontal cortical dysfunctions, including an impaired ability to shift perceptual attentional set, are core features of schizophrenia. Nevertheless, the effectiveness of second-generation antipsychotic drugs in treating specific prefrontal dysfunctions remains equivocal. OBJECTIVES: To model schizophrenia-like cognitive inflexibility in rats, we evaluated the effects of repeated administration of ketamine, the noncompetitive antagonist of the N-methyl-d-aspartate receptor, after a washout period of 14 days in the attentional set-shifting task (ASST). Next, we investigated whether the atypical antipsychotics quetiapine and sertindole would alleviate the ketamine-induced set-shifting impairment. METHODS: Ketamine (30 mg/kg) was administered intraperitoneally to rats once daily for 5 or 10 consecutive days to assess its efficacy in producing cognitive impairment. The ASST was performed 14 days following the final drug administration. Quetiapine (0.63, 1.25 or 2.5 mg/kg) or sertindole (2.5 mg/kg) was administered per os 120 min before testing. RESULTS: The results of the present study demonstrate that ketamine treatment for 10 but not 5 days significantly and specifically impaired rats’ performance in the extra-dimensional shift (EDs) stage of the ASST. This cognitive inflexibility was reversed by acute administration of sertindole or quetiapine. Quetiapine also promoted set-shifting in cognitively unimpaired control animals. CONCLUSION: The data presented here show that subchronic administration of ketamine induces cognitive inflexibility after a washout period. This cognitive deficit likely reflects clinically relevant aspects of cognitive dysfunction encountered in schizophrenic patients. The beneficial effects of quetiapine on set-shifting may have therapeutic implications for the treatment of schizophrenia and other disorders associated with frontal-dependent cognitive impairments. |
format | Online Article Text |
id | pubmed-3276756 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Springer-Verlag |
record_format | MEDLINE/PubMed |
spelling | pubmed-32767562012-03-01 Effects of quetiapine and sertindole on subchronic ketamine-induced deficits in attentional set-shifting in rats Nikiforuk, Agnieszka Popik, Piotr Psychopharmacology (Berl) Original Investigation RATIONALE: Prefrontal cortical dysfunctions, including an impaired ability to shift perceptual attentional set, are core features of schizophrenia. Nevertheless, the effectiveness of second-generation antipsychotic drugs in treating specific prefrontal dysfunctions remains equivocal. OBJECTIVES: To model schizophrenia-like cognitive inflexibility in rats, we evaluated the effects of repeated administration of ketamine, the noncompetitive antagonist of the N-methyl-d-aspartate receptor, after a washout period of 14 days in the attentional set-shifting task (ASST). Next, we investigated whether the atypical antipsychotics quetiapine and sertindole would alleviate the ketamine-induced set-shifting impairment. METHODS: Ketamine (30 mg/kg) was administered intraperitoneally to rats once daily for 5 or 10 consecutive days to assess its efficacy in producing cognitive impairment. The ASST was performed 14 days following the final drug administration. Quetiapine (0.63, 1.25 or 2.5 mg/kg) or sertindole (2.5 mg/kg) was administered per os 120 min before testing. RESULTS: The results of the present study demonstrate that ketamine treatment for 10 but not 5 days significantly and specifically impaired rats’ performance in the extra-dimensional shift (EDs) stage of the ASST. This cognitive inflexibility was reversed by acute administration of sertindole or quetiapine. Quetiapine also promoted set-shifting in cognitively unimpaired control animals. CONCLUSION: The data presented here show that subchronic administration of ketamine induces cognitive inflexibility after a washout period. This cognitive deficit likely reflects clinically relevant aspects of cognitive dysfunction encountered in schizophrenic patients. The beneficial effects of quetiapine on set-shifting may have therapeutic implications for the treatment of schizophrenia and other disorders associated with frontal-dependent cognitive impairments. Springer-Verlag 2011-09-15 2012 /pmc/articles/PMC3276756/ /pubmed/21918808 http://dx.doi.org/10.1007/s00213-011-2487-x Text en © The Author(s) 2011 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
spellingShingle | Original Investigation Nikiforuk, Agnieszka Popik, Piotr Effects of quetiapine and sertindole on subchronic ketamine-induced deficits in attentional set-shifting in rats |
title | Effects of quetiapine and sertindole on subchronic ketamine-induced deficits in attentional set-shifting in rats |
title_full | Effects of quetiapine and sertindole on subchronic ketamine-induced deficits in attentional set-shifting in rats |
title_fullStr | Effects of quetiapine and sertindole on subchronic ketamine-induced deficits in attentional set-shifting in rats |
title_full_unstemmed | Effects of quetiapine and sertindole on subchronic ketamine-induced deficits in attentional set-shifting in rats |
title_short | Effects of quetiapine and sertindole on subchronic ketamine-induced deficits in attentional set-shifting in rats |
title_sort | effects of quetiapine and sertindole on subchronic ketamine-induced deficits in attentional set-shifting in rats |
topic | Original Investigation |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3276756/ https://www.ncbi.nlm.nih.gov/pubmed/21918808 http://dx.doi.org/10.1007/s00213-011-2487-x |
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