Levodopa improves motor deficits but can further disrupt cognition in a macaque Parkinson model.
Mov Disord
; 28(5): 663-7, 2013 May.
Article
en En
| MEDLINE
| ID: mdl-23238827
ABSTRACT
BACKGROUND:
Levodopa effectively relieves motor symptoms in Parkinson's disease (PD), but has had inconsistent effects on cognition, even worsening some aspects of cognitive functioning. Therefore, remediation of PD cognitive deficits is a major unmet need. However, drug development efforts have been hampered by lack of an animal model in which motor and cognitive deficits can be examined simultaneously.METHODS:
Cynomolgus monkeys were trained to perform cognitive tasks and then chronically exposed to MPTP to slowly produce cognitive and motor deficits of parkinsonism.RESULTS:
Administration of L-dopa to these animals dose dependently improved motor functioning, but did not significantly improve cognitive performance. At doses that maximally improved motor function, additional cognitive deficits were observed. The present model of MPTP-induced parkinsonism recapitulates important motor and cognitive aspects of PD. Results with L-dopa mirror data derived from PD patients.CONCLUSION:
This model should allow more efficient testing of potential PD therapeutics to evaluate motor and cognitive functions simultaneously. © 2012 Movement Disorder Society.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Levodopa
/
Trastornos del Conocimiento
/
Intoxicación por MPTP
/
Movimiento
/
Antiparkinsonianos
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Mov Disord
Asunto de la revista:
NEUROLOGIA
Año:
2013
Tipo del documento:
Article
País de afiliación:
Estados Unidos