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Sachdev, P. et al.

The preventative role of antioxidants (selegiline and vitamin E) in a rat model of tardive dyskinesia.

BACKGROUND: We examined the potential protective effects of two potent antioxidants, selegiline and vitamin E, in a rodent model of tardive dyskinesia (TD), viz. neuroleptic-induced spontaneous orofacial movements. METHODS: Rats were treated with fortnightly injections of fluphenazine decanoate for 12 weeks, and examined at baseline and at fortnightly intervals for vacuous chewing movements, mouth tremors and tongue protrusions. RESULTS: The administration of fluphenazine led to a progressive increase of all three types of orofacial movements. In the first study, the impact of the concomitant administration of selegiline on orofacial movements was examined. Selegiline led to a reduction in orofacial movements in neuroleptic-treated rats to the level of control rats not being administered a neuroleptic drug. In the second study, rats were fed diets either high or low in their vitamin E content. High and low vitamin E diets did not significantly affect neuroleptic-induced orofacial movements. CONCLUSIONS: Our studies provide some support for the hypothesis that oxidative injury may play a role in the genesis of neuroleptic-induced movement disorder, and prompt further examination of this hypothesis in both animals and humans.[1]

References

The preventative role of antioxidants (selegiline and vitamin E) in a rat model of tardive dyskinesia. Sachdev, P., Saharov, T., Cathcart, S. Biol. Psychiatry (1999) [Pubmed]

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