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Título: | Is the acute NMDA receptor hypofunction a valid model of schizophrenia? |
Autor: | Adell, Albert CSIC ORCID ; Jiménez-Sánchez, Laura CSIC; López-Gil, Xavier CSIC ORCID; Romón, Tamara CSIC | Fecha de publicación: | 2012 | Editor: | Oxford University Press | Citación: | Schizophrenia Bulletin 38(1): 9-14 (2012) | Resumen: | Several genetic, neurodevelopmental, and pharmacological animal models of schizophrenia have been established. This short review examines the validity of one of the most used pharmacological model of the illness, ie, the acute administration of N-methyl-D-aspartate (NMDA) receptor antagonists in rodents. In some cases, data on chronic or prenatal NMDA receptor antagonist exposure have been introduced for comparison. The face validity of acute NMDA receptor blockade is granted inasmuch as hyperlocomotion and stereotypies induced by phencyclidine, ketamine, and MK-801 are regarded as a surrogate for the positive symptoms of schizophrenia. In addition, the loss of parvalbumin-containing cells (which is one of the most compelling finding in postmortem schizophrenia brain) following NMDA receptor blockade adds construct validity to this model. However, the lack of changes in glutamic acid decarboxylase (GAD67) is at variance with human studies. It is possible that changes in GAD67 are more reflective of the neurodevelopmental condition of schizophrenia. Finally, the model also has predictive validity, in that its behavioral and transmitter activation in rodents are responsive to antipsychotic treatment. Overall, although not devoid of drawbacks, the acute administration of NMDA receptor antagonists can be considered as a good model of schizophrenia bearing a satisfactory degree of validity. © 2011 The Author. | Descripción: | El pdf del artículo es la versión post-print. | Versión del editor: | http://dx.doi.org/10.1093/schbul/sbr133 | URI: | http://hdl.handle.net/10261/73676 | DOI: | 10.1093/schbul/sbr133 | Identificadores: | doi: 10.1093/schbul/sbr133 issn: 0586-7614 e-issn: 1745-1701 |
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