1. The cognitive profile of aripiprazole differs from that of other atypical antipsychotics in schizophrenia patients.
- Author
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Hori H, Yoshimura R, Katsuki A, Hayashi K, Ikenouchi-Sugita A, Umene-Nakano W, and Nakamura J
- Subjects
- Adult, Analysis of Variance, Aripiprazole, Cognition Disorders etiology, Dose-Response Relationship, Drug, Female, Humans, Japan, Male, Middle Aged, Neuropsychological Tests, Psychiatric Status Rating Scales, Schizophrenia complications, Statistics as Topic, Treatment Outcome, Young Adult, Antipsychotic Agents therapeutic use, Cognition Disorders drug therapy, Piperazines therapeutic use, Quinolones therapeutic use, Schizophrenia drug therapy, Schizophrenic Psychology
- Abstract
We investigated the effects of the atypical antipsychotics risperidone, olanzapine, and aripiprazole on the cognitive functions of Japanese patients with schizophrenia with respect to dosage amounts and dosing schedules. We performed a cross-sectional survey using the Brief Assessment of Cognition in Schizophrenia - Japanese Language Version (BACS-J) to evaluate the neurocognitive functions of 101 schizophrenic patients who took the same dose of one of the three aforementioned antipsychotics for at least 3 months. The BACS-J composite score correlated negatively with the prescribed dosages of risperidone and olanzapine. In contrast, we did not find a correlation between the BACS-J composite score and the prescribed dosage of aripiprazole. Moreover, the primary scores for verbal learning, motor function, and attention and processing speed were significantly lower among the patients who were taking the prescribed dosage of risperidone. The scores for verbal learning and motor function were also significantly lower when correlated with the prescribed dosage of olanzapine. We did not find a correlation between any of the primary scores on the BACS-J and the prescribed dosage of aripiprazole. In fact, the results suggest there is no linear relationship between the dose of aripiprazole and cognitive impairment, which may be due to its unique pharmacological profile., (Copyright © 2012 Elsevier Ltd. All rights reserved.)
- Published
- 2012
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