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Title: Subjective experience and striatal dopamine D(2) receptor occupancy in patients with schizophrenia stabilized by olanzapine or risperidone. Author: de Haan L, Lavalaye J, Linszen D, Dingemans PM, Booij J. Journal: Am J Psychiatry; 2000 Jun; 157(6):1019-20. PubMed ID: 10831489. Abstract: OBJECTIVE: The authors' goal was to study the relationship between subjective experience during treatment with olanzapine or risperidone and dopamine D(2) receptor occupancy in stabilized patients with schizophrenia. METHOD: Subjective experience, psychopathology, and extrapyramidal symptoms were assessed, and D(2) receptor occupancy was determined with [(123)I]iodobenzamide single photon emission computed tomography, in 22 patients whose schizophrenia was stabilized by olanzapine or risperidone. RESULTS: Subjective experience, depression, and negative symptoms were related to dopamine D(2) receptor occupancy, but extrapyramidal symptoms were not. CONCLUSIONS: These results provide preliminary evidence that negative subjective experience is related to high D(2) receptor occupancy. Longitudinal study is required because this relationship may have implications for dosing strategies.[Abstract] [Full Text] [Related] [New Search]