B M Cohen1, W Wan. 1. Mailman Research Center, McLean Hospital, Belmont, MA 02178, USA.
Abstract
OBJECTIVE: Because recent data suggest that there are abnormalities of the thalamus in schizophrenia, the authors tested the effects of antipsychotic drugs on thalamic sites. METHOD: Nine rats were given acute doses of the typical neuroleptic haloperidol (N = 3), the atypical neuroleptic clozapine (N = 3), or a drug-free vehicle (N = 3). Cellular activation was assessed by using immunohistochemistry to determine expression of the immediate response gene c-fos. RESULTS: Both antipsychotic drugs induced increased Fos immunoreactivity, suggesting increased activity in cells of the midline nuclei of the thalamus. CONCLUSIONS: The shared clinical effects of antipsychotic drugs may be mediated in part through actions on the thalamus.
OBJECTIVE: Because recent data suggest that there are abnormalities of the thalamus in schizophrenia, the authors tested the effects of antipsychotic drugs on thalamic sites. METHOD: Nine rats were given acute doses of the typical neuroleptic haloperidol (N = 3), the atypical neuroleptic clozapine (N = 3), or a drug-free vehicle (N = 3). Cellular activation was assessed by using immunohistochemistry to determine expression of the immediate response gene c-fos. RESULTS: Both antipsychotic drugs induced increased Fos immunoreactivity, suggesting increased activity in cells of the midline nuclei of the thalamus. CONCLUSIONS: The shared clinical effects of antipsychotic drugs may be mediated in part through actions on the thalamus.
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