The dopamine D3-preferring D2/D3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia
Current antipsychotic medication is largely ineffective against the negative and cognitive symptoms of schizophrenia. One promising therapeutic development is to design new molecules that balance actions on dopamine D2 and D3 receptors to maximise benefits and limit adverse effects. This study used...
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Elsevier
2016
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| Online Access: | https://eprints.nottingham.ac.uk/34643/ |
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| author | Watson, David J.G. King, Madeleine V. Gyertyán, Istvan Kiss, Béla Adham, Nika Fone, Kevin C.F. |
| author_facet | Watson, David J.G. King, Madeleine V. Gyertyán, Istvan Kiss, Béla Adham, Nika Fone, Kevin C.F. |
| author_sort | Watson, David J.G. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Current antipsychotic medication is largely ineffective against the negative and cognitive symptoms of schizophrenia. One promising therapeutic development is to design new molecules that balance actions on dopamine D2 and D3 receptors to maximise benefits and limit adverse effects. This study used two rodent paradigms to investigate the action of the dopamine D3-preferring D3/D2 receptor partial agonist cariprazine. In adult male rats, cariprazine (0.03-0.3mg/kg i.p.), and the atypical antipsychotic aripiprazole (1-3mg/kg i.p.) caused dose-dependent reversal of a delay-induced impairment in novel object recognition (NOR). Treating neonatal rat pups with phencyclidine (PCP) and subsequent social isolation produced a syndrome of behavioral alterations in adulthood including hyperactivity in a novel arena, deficits in NOR and fear motivated learning and memory, and a reduction and change in pattern of social interaction accompanied by increased ultrasonic vocalisations (USVs). Acute administration of cariprazine (0.1 and 0.3mg/kg) and aripiprazole (3mg/kg) to resultant adult rats reduced neonatal PCP-social isolation induced locomotor hyperactivity and reversed NOR deficits. Cariprazine (0.3mg/kg) caused a limited reversal of the social interaction deficit but neither drug affected the change in USVs or the deficit in fear motivated learning and memory. Results suggest that in the behavioral tests investigated cariprazine is at least as effective as aripiprazole and in some paradigms it showed additional beneficial features further supporting the advantage of combined dopamine D3/D2 receptor targeting. These findings support recent clinical studies demonstrating the efficacy of cariprazine in treatment of negative symptoms and functional impairment in schizophrenia patients. |
| first_indexed | 2025-11-14T19:23:33Z |
| format | Article |
| id | nottingham-34643 |
| institution | University of Nottingham Malaysia Campus |
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| last_indexed | 2025-11-14T19:23:33Z |
| publishDate | 2016 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-346432020-05-04T20:04:24Z https://eprints.nottingham.ac.uk/34643/ The dopamine D3-preferring D2/D3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia Watson, David J.G. King, Madeleine V. Gyertyán, Istvan Kiss, Béla Adham, Nika Fone, Kevin C.F. Current antipsychotic medication is largely ineffective against the negative and cognitive symptoms of schizophrenia. One promising therapeutic development is to design new molecules that balance actions on dopamine D2 and D3 receptors to maximise benefits and limit adverse effects. This study used two rodent paradigms to investigate the action of the dopamine D3-preferring D3/D2 receptor partial agonist cariprazine. In adult male rats, cariprazine (0.03-0.3mg/kg i.p.), and the atypical antipsychotic aripiprazole (1-3mg/kg i.p.) caused dose-dependent reversal of a delay-induced impairment in novel object recognition (NOR). Treating neonatal rat pups with phencyclidine (PCP) and subsequent social isolation produced a syndrome of behavioral alterations in adulthood including hyperactivity in a novel arena, deficits in NOR and fear motivated learning and memory, and a reduction and change in pattern of social interaction accompanied by increased ultrasonic vocalisations (USVs). Acute administration of cariprazine (0.1 and 0.3mg/kg) and aripiprazole (3mg/kg) to resultant adult rats reduced neonatal PCP-social isolation induced locomotor hyperactivity and reversed NOR deficits. Cariprazine (0.3mg/kg) caused a limited reversal of the social interaction deficit but neither drug affected the change in USVs or the deficit in fear motivated learning and memory. Results suggest that in the behavioral tests investigated cariprazine is at least as effective as aripiprazole and in some paradigms it showed additional beneficial features further supporting the advantage of combined dopamine D3/D2 receptor targeting. These findings support recent clinical studies demonstrating the efficacy of cariprazine in treatment of negative symptoms and functional impairment in schizophrenia patients. Elsevier 2016-02 Article PeerReviewed Watson, David J.G., King, Madeleine V., Gyertyán, Istvan, Kiss, Béla, Adham, Nika and Fone, Kevin C.F. (2016) The dopamine D3-preferring D2/D3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia. European Neuropsychopharmacology, 26 . pp. 208-224. ISSN 1873-7862 Dopamine D3; Cariprazine; Social isolation; Neonatal phencyclidine; Object recognition; Schizophrenia http://www.sciencedirect.com/science/article/pii/S0924977X15004034 doi:10.1016/j.euroneuro.2015.12.020 doi:10.1016/j.euroneuro.2015.12.020 |
| spellingShingle | Dopamine D3; Cariprazine; Social isolation; Neonatal phencyclidine; Object recognition; Schizophrenia Watson, David J.G. King, Madeleine V. Gyertyán, Istvan Kiss, Béla Adham, Nika Fone, Kevin C.F. The dopamine D3-preferring D2/D3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia |
| title | The dopamine D3-preferring D2/D3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia |
| title_full | The dopamine D3-preferring D2/D3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia |
| title_fullStr | The dopamine D3-preferring D2/D3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia |
| title_full_unstemmed | The dopamine D3-preferring D2/D3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia |
| title_short | The dopamine D3-preferring D2/D3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia |
| title_sort | dopamine d3-preferring d2/d3 dopamine receptor partial agonist, cariprazine, reverses behavioral changes in a rat neurodevelopmental model for schizophrenia |
| topic | Dopamine D3; Cariprazine; Social isolation; Neonatal phencyclidine; Object recognition; Schizophrenia |
| url | https://eprints.nottingham.ac.uk/34643/ https://eprints.nottingham.ac.uk/34643/ https://eprints.nottingham.ac.uk/34643/ |