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Experimental Brain Research

, Volume 133, Issue 2, pp 178–188 | Cite as

Antiparkinsonian and neuroprotective effects of modafinil in the mptp-treated common marmoset

  • P. Jenner
  • B.-Y. Zeng
  • L.A. Smith
  • R.K.B. Pearce
  • B. Tel
  • L. Chancharme
  • G. Moachon
Research Article

Abstract.

The psychostimulant drug, modafinil, protects rodents against 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) toxicity, striatal ischemia and partial transection of the nigro-striatal pathway. We now report on the ability of modafinil to reverse motor disability in MPTP-treated common marmosets and to prevent MPTP-induced nigral cell death in this species. In the initial experiments, adult common marmosets were treated with MPTP to produce stable motor deficits. The subsequent administration of modafinil (10, 30 or 100 mg/kg/day, p.o.) produced a dose-dependent reversal of motor disability. In a subsequent experiment, normal common marmosets were concurrently treated with 10, 30 or 100 mg/kg of modafinil once daily by gavage during acute MPTP administration (daily for 5 days), continuing for 2 weeks after the last dose of MPTP. Modafinil dose-dependently prevented the decline in motor activity normally produced by MPTP treatment. MPTP treatment caused a 76% loss of nigral tyrosine-hydroxylase-immunoreactive cells in placebo-treated animals, and this was dose-dependently prevented by modafinil. At the highest dose (100 mg/kg/day) of modafinil, there was no significant loss of tyrosine-hydroxylase-immunoreactive cells in the substantia nigra compared with normal animals. MPTP treatment also reduced striatal dopamine uptake sites by 95%, as measured by specific [3H]-mazindol binding, compared with normal controls. Modafinil treatment dose-dependently reduced the loss of specific [3H]-mazindol binding. Behavioural and morphological evidence in the present study indicate a potential antiparkinsonian and neuroprotective role for modafinil, which may form a new pharmacological approach to the treatment of Parkinson's disease.

Modafinil Primates MPTP treatment 

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Copyright information

© Springer-Verlag 2000

Authors and Affiliations

  • P. Jenner
    • 1
  • B.-Y. Zeng
    • 1
  • L.A. Smith
    • 1
  • R.K.B. Pearce
    • 1
  • B. Tel
    • 1
  • L. Chancharme
    • 2
  • G. Moachon
    • 2
  1. 1.Neurodegenerative Disease Research Centre, Division of Pharmacology and Therapeutics, Guy's, King's and St Thomas' School of Biomedical Sciences, King's College, Guy's Campus, London SE1 1UL, UK
  2. 2.Laboratoire L. Lafon, Centre de Recherches, 9470 Maisons-Alfort, Cedex, France

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