1. Typical antipsychotic drugs -- D(2) receptor occupancy and depressive symptoms in schizophrenia.
- Author
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Bressan RA, Costa DC, Jones HM, Ell PJ, and Pilowsky LS
- Subjects
- Adult, Antipsychotic Agents adverse effects, Corpus Striatum diagnostic imaging, Corpus Striatum drug effects, Depression diagnostic imaging, Depression psychology, Frontal Lobe diagnostic imaging, Frontal Lobe drug effects, Humans, Male, Psychiatric Status Rating Scales, Schizophrenia diagnostic imaging, Tomography, Emission-Computed, Single-Photon, Antipsychotic Agents therapeutic use, Depression drug therapy, Receptors, Dopamine D2 drug effects, Schizophrenia drug therapy, Schizophrenic Psychology
- Abstract
We tested the hypothesis that the degree of striatal dopamine D(2) receptor blockade induced by typical antipsychotic treatment directly correlates with the presence and severity of depressive symptoms in schizophrenia. Clinical and [(123)I]-IBZM single-photon emission tomography (SPET) scan data obtained from 18 typical antipsychotic treated schizophrenic patients was analysed to evaluate the relationship between striatal D(2) receptor occupancy and the depressive subscale of the Brief Psychiatric Rating Scale (BPRS-D). Striatal D(2) receptor occupancy by typical antipsychotic drugs was significantly positively correlated with BPRS-D scores (r=0.52, p=0.025). This study suggests that high striatal dopamine D(2) blockade by typical antipsychotic drugs may contribute to the emergence of depressive symptoms in typical antipsychotic treated schizophrenic patients.
- Published
- 2002
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