Animal models of tardive dyskinesia--a review.
2001
Tardive dyskinesia is a serious motor side effect of long term neuroleptic therapy, with an unknown pathophysiological basis. The leading hypothesis of the pathophysiology of tardive dyskinesia includes dopamine receptor supersensitivity, GABAergic hypofunction, excitotoicity and oxidative stress. Many preclinical models have been developed to identify the underlying pathological processes of tardive dyskinesia, but none has yet produced a parsimonious results. A wide range of animal models, viz. Homologous, analogous and correlational models have been developed to explore the pathophysiology of tardive dyskinesia. Vacuous chewing movements in rodents induced by chronic neuroleptic treatment is the most frequently employed model. As the existing models suffer from several phenomenological and methodological problems, development of new models, highly predictive of pathological basis of tardive dyskinesia can accelerate tardive dyskinesia research for the better understanding of the pathophysiological processes underlying the syndrome and for the discovery of new therapeutic targets for the treatment of tardive dyskinesia.
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