Pharmacological characterization of psychosis-like behavior in the MPTP-lesioned nonhuman primate model of Parkinson's disease
Identifieur interne : 001917 ( PascalFrancis/Corpus ); précédent : 001916; suivant : 001918Pharmacological characterization of psychosis-like behavior in the MPTP-lesioned nonhuman primate model of Parkinson's disease
Auteurs : Naomi P. Visanji ; Jordi Gomez-Ramirez ; Tom H. Johnston ; Donna Pires ; Valerie Voon ; Jonathan M. Brotchie ; Susan H. FoxSource :
- Movement disorders [ 0885-3185 ] ; 2006.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
Investigation of the pathophysiology of psychosis in Parkinson's disease (PD), as well as the assessment of potential novel therapeutics, has been limited by the lack of a well-validated animal model. MPTP-lesioned primates exhibit abnormal behaviors that are distinct from dyskinesia and parkinsonism and may represent behavioral correlates of neural processes related to psychosis in PD. Here we assess four types of behavior-agitation, hallucinatory-like responses to nonapparent stimuli, obsessive grooming, and stereotypies that are termed "psychosis-like"-and define their pharmacology using a psychosis-like behavior rating scale. By assessing the actions of drugs known to enhance or attenuate psychosis in PD patients, we find that the pharmacology of these behaviors recapitulates, in several respects, the pharmacology of psychosis in PD. Thus, levodopa and apomorphine elicited psychosis-like behaviors. Amantadine significantly decreased levodopa-induced dyskinesia but exacerbated psychosis-like behaviors. Haloperidol reduced psychosis-like behaviors but at the expense of increased parkinsonian disability while the atypical neuroleptics clozapine and quetiapine reduced psychosis-like behaviors without significant effect on parkinsonian disability. The response of different components of the psychotomimetic behavior suggested the involvement of both dopaminergic and nondopaminergic mechanisms in their expression.
Notice en format standard (ISO 2709)
Pour connaître la documentation sur le format Inist Standard.
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Format Inist (serveur)
NO : | PASCAL 07-0021714 INIST |
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ET : | Pharmacological characterization of psychosis-like behavior in the MPTP-lesioned nonhuman primate model of Parkinson's disease |
AU : | VISANJI (Naomi P.); GOMEZ-RAMIREZ (Jordi); JOHNSTON (Tom H.); PIRES (Donna); VOON (Valerie); BROTCHIE (Jonathan M.); FOX (Susan H.) |
AF : | Toronto Western Research Institute, Toronto Western Hospital/Toronto/Canada (1 aut., 2 aut., 3 aut., 4 aut., 6 aut.); Department of Psychiatry, Toronto Western Hospital/Toronto/Canada (5 aut.); Division of Neurology, University of Toronto/Toronto/Canada (7 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2006; Vol. 21; No. 11; Pp. 1879-1891; Bibl. 74 ref. |
LA : | Anglais |
EA : | Investigation of the pathophysiology of psychosis in Parkinson's disease (PD), as well as the assessment of potential novel therapeutics, has been limited by the lack of a well-validated animal model. MPTP-lesioned primates exhibit abnormal behaviors that are distinct from dyskinesia and parkinsonism and may represent behavioral correlates of neural processes related to psychosis in PD. Here we assess four types of behavior-agitation, hallucinatory-like responses to nonapparent stimuli, obsessive grooming, and stereotypies that are termed "psychosis-like"-and define their pharmacology using a psychosis-like behavior rating scale. By assessing the actions of drugs known to enhance or attenuate psychosis in PD patients, we find that the pharmacology of these behaviors recapitulates, in several respects, the pharmacology of psychosis in PD. Thus, levodopa and apomorphine elicited psychosis-like behaviors. Amantadine significantly decreased levodopa-induced dyskinesia but exacerbated psychosis-like behaviors. Haloperidol reduced psychosis-like behaviors but at the expense of increased parkinsonian disability while the atypical neuroleptics clozapine and quetiapine reduced psychosis-like behaviors without significant effect on parkinsonian disability. The response of different components of the psychotomimetic behavior suggested the involvement of both dopaminergic and nondopaminergic mechanisms in their expression. |
CC : | 002B17; 002B17G; 002B17A03 |
FD : | Système nerveux pathologie; Psychose; Parkinson maladie; Comportement; Primates; Modèle animal |
FG : | Mammalia; Vertebrata; Encéphale pathologie; Extrapyramidal syndrome; Maladie dégénérative; Système nerveux central pathologie |
ED : | Nervous system diseases; Psychosis; Parkinson disease; Behavior; Primates; Animal model |
EG : | Mammalia; Vertebrata; Cerebral disorder; Extrapyramidal syndrome; Degenerative disease; Central nervous system disease |
SD : | Sistema nervioso patología; Psicosis; Parkinson enfermedad; Conducta; Primates; Modelo animal |
LO : | INIST-20953.354000158935070110 |
ID : | 07-0021714 |
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<front><div type="abstract" xml:lang="en">Investigation of the pathophysiology of psychosis in Parkinson's disease (PD), as well as the assessment of potential novel therapeutics, has been limited by the lack of a well-validated animal model. MPTP-lesioned primates exhibit abnormal behaviors that are distinct from dyskinesia and parkinsonism and may represent behavioral correlates of neural processes related to psychosis in PD. Here we assess four types of behavior-agitation, hallucinatory-like responses to nonapparent stimuli, obsessive grooming, and stereotypies that are termed "psychosis-like"-and define their pharmacology using a psychosis-like behavior rating scale. By assessing the actions of drugs known to enhance or attenuate psychosis in PD patients, we find that the pharmacology of these behaviors recapitulates, in several respects, the pharmacology of psychosis in PD. Thus, levodopa and apomorphine elicited psychosis-like behaviors. Amantadine significantly decreased levodopa-induced dyskinesia but exacerbated psychosis-like behaviors. Haloperidol reduced psychosis-like behaviors but at the expense of increased parkinsonian disability while the atypical neuroleptics clozapine and quetiapine reduced psychosis-like behaviors without significant effect on parkinsonian disability. The response of different components of the psychotomimetic behavior suggested the involvement of both dopaminergic and nondopaminergic mechanisms in their expression.</div>
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<ET>Pharmacological characterization of psychosis-like behavior in the MPTP-lesioned nonhuman primate model of Parkinson's disease</ET>
<AU>VISANJI (Naomi P.); GOMEZ-RAMIREZ (Jordi); JOHNSTON (Tom H.); PIRES (Donna); VOON (Valerie); BROTCHIE (Jonathan M.); FOX (Susan H.)</AU>
<AF>Toronto Western Research Institute, Toronto Western Hospital/Toronto/Canada (1 aut., 2 aut., 3 aut., 4 aut., 6 aut.); Department of Psychiatry, Toronto Western Hospital/Toronto/Canada (5 aut.); Division of Neurology, University of Toronto/Toronto/Canada (7 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2006; Vol. 21; No. 11; Pp. 1879-1891; Bibl. 74 ref.</SO>
<LA>Anglais</LA>
<EA>Investigation of the pathophysiology of psychosis in Parkinson's disease (PD), as well as the assessment of potential novel therapeutics, has been limited by the lack of a well-validated animal model. MPTP-lesioned primates exhibit abnormal behaviors that are distinct from dyskinesia and parkinsonism and may represent behavioral correlates of neural processes related to psychosis in PD. Here we assess four types of behavior-agitation, hallucinatory-like responses to nonapparent stimuli, obsessive grooming, and stereotypies that are termed "psychosis-like"-and define their pharmacology using a psychosis-like behavior rating scale. By assessing the actions of drugs known to enhance or attenuate psychosis in PD patients, we find that the pharmacology of these behaviors recapitulates, in several respects, the pharmacology of psychosis in PD. Thus, levodopa and apomorphine elicited psychosis-like behaviors. Amantadine significantly decreased levodopa-induced dyskinesia but exacerbated psychosis-like behaviors. Haloperidol reduced psychosis-like behaviors but at the expense of increased parkinsonian disability while the atypical neuroleptics clozapine and quetiapine reduced psychosis-like behaviors without significant effect on parkinsonian disability. The response of different components of the psychotomimetic behavior suggested the involvement of both dopaminergic and nondopaminergic mechanisms in their expression.</EA>
<CC>002B17; 002B17G; 002B17A03</CC>
<FD>Système nerveux pathologie; Psychose; Parkinson maladie; Comportement; Primates; Modèle animal</FD>
<FG>Mammalia; Vertebrata; Encéphale pathologie; Extrapyramidal syndrome; Maladie dégénérative; Système nerveux central pathologie</FG>
<ED>Nervous system diseases; Psychosis; Parkinson disease; Behavior; Primates; Animal model</ED>
<EG>Mammalia; Vertebrata; Cerebral disorder; Extrapyramidal syndrome; Degenerative disease; Central nervous system disease</EG>
<SD>Sistema nervioso patología; Psicosis; Parkinson enfermedad; Conducta; Primates; Modelo animal</SD>
<LO>INIST-20953.354000158935070110</LO>
<ID>07-0021714</ID>
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