Vitamin E attenuates the development of haloperidol-induced dopaminergic hypersensitivity in rats: possible implications for tardive dyskinesia

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Abstract
Chronic haloperidol treatment in rats results in behavioural supersensitivity to dopamine agonists. This mechanism has been suggested as a possible animal model for tardive dyskinesia. In the present study the simultaneous administration of vitamin E to chronic haloperidol treatment in rats prevented the development of behavioural supersensitivity to apomorphine. This finding suggest that the concomitant administration of vitamin E to neuroleptics might prevent the development of tardive dyskinesia in humans.