Cited by 81Schizophrenia research and treatmentNeurotransmitter Receptor Influence on BehaviorTreatment of Major Depression

Dopamine supersensitivity psychosis as a pivotal factor in treatment-resistant schizophrenia

Suzuki, Tomotaka, Kanahara, Nobuhisa, Yamanaka, Hiroshi, Takase, Masayuki, Kimura, Hiroshi, Watanabe, Hiroyuki, Iyo, Masaomi·2015·Psychiatry Research

Abstract

There may be subtypes in treatment-resistant schizophrenia (TRS), and one of the subtypes may be related to dopamine supersensitivity psychosis (DSP). In developing strategies for prevention and treatment TRS, it is important to clarify the role of DSP in TRS. TRS patients were recruited from 3 hospitals for the present study. Through chart reviews, all patients were judged as either TRS or not, and then possible TRS patients were investigated about their past/present histories of DSP episode(s) by direct interviews. We then compared each factor between the groups with and without DSP episode(s). Out of 611 patients screened, 147 patients met the criteria for TRS and were included in the present analysis. These were divided into groups with and without DSP, comprising 106 (72.1%) and 41 patients (27.9%), respectively. Clinical characteristics in the two groups were similar, except for drug-induced movement disorders (DIMDs), which were significantly more important in DSP patients. Of the DSP patients, 42% and 56% experienced rebound psychosis and tolerance to antipsychotic effects, respectively. The present study revealed that approximately 70% of TRS patients experienced one or more DSP episodes, which may have a strong impact on the long-term prognosis of patients with schizophrenia.

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Crossref · 10.1016/j.psychres.2015.02.021

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Authors
Suzuki, T., Kanahara, N., Yamanaka, H., Takase, M., Kimura, H., Watanabe, H., & Iyo, M.
Affiliations
Chiba University (JP)
Corresponding author
Kanahara, Nobuhisa
Venue
Psychiatry Research
Publisher
Elsevier BV
Published
2015-06
Volume
227
Issue
2-3
Pages
278-282
ISSN
0165-1781 (ISSN-L)
OpenAlex
W2001661616
Cited by
81
References
43
Citations by year
2026: 9 · 2025: 2 · 2024: 3 · 2023: 6 · 2022: 6 · 2021: 15 · 2020: 10 · 2019: 6 · 2018: 8 · 2017: 7 · 2016: 5 · 2015: 4
FWCI
6.49
Type
journal article
Language
en
Open access
closed
Locations
  • Psychiatry Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
SENSHIN Medical Research Foundation
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
treatment-resistant schizophrenia, drug-induced movement disorders, schizophrenia subtypes, prognosis
MeSH terms
Adult, Dopamine, Drug Tolerance, Female, Humans, Male, Middle Aged, Movement Disorders, Psychoses, Substance-Induced, Schizophrenia, Antipsychotic Agents

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