UMMS Affiliation

Department of Psychiatry

Publication Date

2019-10-08

Document Type

Article

Disciplines

Mental Disorders | Nervous System | Neuroscience and Neurobiology | Psychiatry | Therapeutics

Abstract

Antipsychotic medications can have a significant effect on brain function after only several days of treatment. It is unclear whether such an acute effect can serve as an early predictor for treatment response in schizophrenia. Thirty-two patients with drug-naive, first-episode schizophrenia and 32 healthy controls underwent resting-state functional magnetic resonance imaging. Patients were treated with olanzapine and were scanned at baseline and 1 week of treatment. Healthy controls were scanned once at baseline. Symptom severity was assessed within the patient group using the Positive and Negative Syndrome Scale (PANSS) at three time points (baseline, 1 week of treatment, and 8 weeks of treatment). The fractional amplitude of low frequency fluctuation (fALFF) and support vector regression (SVR) methods were used to analyze the data. Compared with the control group, the patient group showed increased levels of fALFF in the bilateral putamen at baseline. After 1 week of olanzapine treatment, the patient group showed decreased levels of fALFF in the right putamen relative to those at baseline. The SVR analysis found a significantly positive relationship between the reduction in fALFF after 1 week of treatment and the improvement in positive symptoms after 8 weeks of treatment (r = 0.431, p = 0.014). The present study provides evidence that early reduction and normalization of fALFF in the right putamen may serve as a predictor for treatment response in patients with schizophrenia.

Keywords

early predictor, fractional amplitude of low frequency fluctuation, olanzapine, pattern classification, schizophrenia

Rights and Permissions

Copyright © 2019 Wu, Ou, Liu, Chen, Li, Zhao, Guo and Fan. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

DOI of Published Version

10.3389/fpsyt.2019.00741

Source

Front Psychiatry. 2019 Oct 8;10:741. doi: 10.3389/fpsyt.2019.00741. eCollection 2019. Link to article on publisher's site

Journal/Book/Conference Title

Frontiers in psychiatry

Related Resources

Link to Article in PubMed

PubMed ID

31649567

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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