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Phencyclidine Model of Frontal Cortical Dysfunction in Nonhuman PrimatesDepartment of Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania
Department of Pyschiatry, Yale University School of Medicine, New Haven, Connecticut
Department of Pharmacology, Department of Pyschiatry, Yale University School of Medicine, New Haven, Connecticut, robert.roth{at}yale.edu Long-term intake of noncompetitive N-methyl-D-aspartate (NMDA)/glutamate receptor antagonists, such as phencyclidine (PCP), can simulate schizophrenia-like symptomatology in human subjects and can produce aberrant behavior in animals. The behavioral changes produced by PCP in animals have been suggested to model certain primary symptoms of idiopathic psychotic disorders, and the neurobiological substrates affected by PCP have been implicated in the pathophysiology of schizophrenia. This review considers the validity of PCP-induced behaviors in animals as a model of the human disorder, and a developing hypothesis of PCP-induced neurochemical dysfunction within the prefrontal cortex is presented. The behavioral and neurochemical effects of PCP may support the notion that altered glutamatergic/dopaminergic interactions within prefrontal cortex contribute to the cognitive dysfunction of schizophrenia.
Key Words: Dopamine Schizophrenia Cognition NMDA Glutamate Prefrontal cortex
The Neuroscientist, Vol. 6, No. 4,
263-270 (2000) |
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