Cited by 203Schizophrenia research and treatmentBipolar Disorder and TreatmentMental Health and Psychiatry

Brain structure, function, and neurochemistry in schizophrenia and bipolar disorder—a systematic review of the magnetic resonance neuroimaging literature

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Birur, Badari, Kraguljac, Nina Vanessa, Shelton, Richard C., Lahti, Adrienne Carol·2017·npj Schizophrenia

Abstract

Since Emil Kraepelin’s conceptualization of endogenous psychoses as dementia praecox and manic depression, the separation between primary psychotic disorders and primary affective disorders has been much debated. We conducted a systematic review of case–control studies contrasting magnetic resonance imaging studies in schizophrenia and bipolar disorder. A literature search in PubMed of studies published between January 2005 and December 2016 was conducted, and 50 structural, 29 functional, 7 magnetic resonance spectroscopy, and 8 combined imaging and genetic studies were deemed eligible for systematic review. Structural neuroimaging studies suggest white matter integrity deficits that are consistent across the illnesses, while gray matter reductions appear more widespread in schizophrenia compared to bipolar disorder. Spectroscopy studies in cortical gray matter report evidence of decreased neuronal integrity in both disorders. Functional neuroimaging studies typically report similar functional architecture of brain networks in healthy controls and patients across the psychosis spectrum, but find differential extent of alterations in task related activation and resting state connectivity between illnesses. The very limited imaging-genetic literature suggests a relationship between psychosis risk genes and brain structure, and possible gene by diagnosis interaction effects on functional imaging markers. While the existing literature suggests some shared and some distinct neural markers in schizophrenia and bipolar disorder, it will be imperative to conduct large, well designed, multi-modal neuroimaging studies in medication-naïve first episode patients that will be followed longitudinally over the course of their illness in an effort to advance our understanding of disease mechanisms.

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Crossref · 10.1038/s41537-017-0013-9

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  • Diffusion studies of the uncinate fasciculus and anterior and posterior thalamic radiations have shown decreased fractional anisotropy in both BD and schizophrenia.

    “Diffusion studies of the uncinate fasciculus (79) (connecting the amygdala with the medial- and orbitofrontal cortices) and anterior and posterior thalamic radiations (192) have shown decreased fractional anistrophy (a marker of white matter microstructural abnormality) in both BD and schizophrenia.”
  • Structural abnormalities common to both BD and schizophrenia have been observed on neuroimaging.

    “Structural abnormalities common to both BD and schizophrenia have also been observed on neuroimaging.”

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Research works printed but not linked: 3

  1. [30]Intravenous Ketamine for the Treatment of Mental Health Disorders: a Review of Clinical Effectiveness and Guidelines. Ottawa (ON). (2014). 25411673
  2. [46]Pina-Camacho, L. et al. Age at first episode modulates diagnosis-related structural brain abnormalities in psychosis. Schizophr Bull.43, 344–357 (2016). PMC4753597 26371339
  3. [120]Radonic E Comparison of hippocampal volumes in schizophrenia, schizoaffective and bipolar disorder Coll. Antropol. 2011 1 249 252 21648342

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Authors
Birur, B., Kraguljac, N. V., Shelton, R. C., & Lahti, A. C.
Affiliations
University of Alabama at Birmingham (US)
Corresponding author
Lahti, Adrienne Carol
Venue
npj Schizophrenia
Published
2017-04-03
Volume
3
Issue
1
Pages
15-15
ISSN
2334-265X (ISSN-L)
OpenAlex
W2603262402
Cited by
203
References
144
Citations by year
2026: 4 · 2025: 21 · 2024: 12 · 2023: 18 · 2022: 27 · 2021: 31 · 2020: 34 · 2019: 24 · 2018: 25 · 2017: 7
FWCI
3.74
Type
journal article
Language
en
Open access
Locations
  • Schizophrenia (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Institute of Mental Health (R01MH102951, K23MH106683)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
  • Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
Keywords
bipolar disorder, psychosis spectrum, brain structure, white matter integrity, gray matter reduction, resting-state functional connectivity, task-related brain activation, brain networks, neurochemistry, magnetic resonance spectroscopy, imaging genetics, first-episode psychosis, neuroimaging biomarkers

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