Cited by 226Tryptophan and brain disordersSchizophrenia research and treatmentStress Responses and Cortisol

Markers of inflammation and stress distinguish subsets of individuals with schizophrenia and bipolar disorder

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Fillman, S G, Sinclair, D, Fung, S J, Webster, M J, Shannon Weickert, C·2014·Translational Psychiatry

Abstract

Schizophrenia and bipolar disorder share a number of common features, both symptomatically and biologically. Abnormalities in the neuroimmune and the stress-signaling pathways have been previously identified in brains of individuals with both diseases. However, the possible relationship between abnormalities in stress and neuroimmune signaling within the cortex of people with psychotic illness has not been defined. To test the hypothesis that combined alterations in brain stress responsiveness and neuroimmune/inflammatory status are characteristic of some individuals suffering from major mental illness, we examined gene expression in the Stanley Array Cohort of 35 controls, 35 individuals with schizophrenia and 34 individuals with bipolar disorder. We used levels of 8 inflammatory-related transcripts, of which SERPINA3 was significantly elevated in individuals with schizophrenia (F(2,88)=4.137, P<0.05), and 12 glucocorticoid receptor signaling (stress) pathway transcripts previously examined, to identify two clusters of individuals: a high inflammation/stress group (n=32) and a low (n=68) inflammation/stress group. The high inflammation/stress group has a significantly greater number of individuals with schizophrenia (n=15), and a trend toward having more bipolar disorder individuals (n=11), when compared with controls (n=6). Using these subgroups, we tested which microarray-assessed transcriptional changes may be associated with high inflammatory/stress groups using ingenuity analysis and found that an extended network of gene expression changes involving immune, growth factors, inhibitory signaling and cell death factors also distinguished these groups. Our work demonstrates that some of the heterogeneity in schizophrenia and bipolar disorder may be partially explained by inflammation/stress interactions, and that this biological subtype cuts across Diagnostic and Statistical Manual of Mental Disorders (DSM)-defined categories.

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Authors
Fillman, S. G., Sinclair, D., Fung, S. J., Webster, M. J., & Shannon Weickert, C.
Affiliations
  • UNSW Sydney (AU)
  • Stanley Medical Research Institute (US)
Venue
Translational Psychiatry
Published
2014-02-25
Volume
4
Issue
2
Pages
e365-e365
ISSN
2158-3188 (ISSN-L)
OpenAlex
W2081664670
Cited by
226
References
96
Citations by year
2026: 15 · 2025: 15 · 2024: 13 · 2023: 16 · 2022: 23 · 2021: 22 · 2020: 18 · 2019: 25 · 2018: 12 · 2017: 18 · 2016: 25 · 2015: 16 · 2014: 7
FWCI
6.71
Type
journal article
Language
en
Open access
Locations
  • Translational Psychiatry (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • UNSWorks (UNSW Sydney) (submittedVersion, cc-by-nc-nd)
  • Figshare (submittedVersion, cc-by-nc-sa)
Funders
  • Stanley Medical Research Institute
  • Neuroscience Research Australia
  • University of New South Wales
  • NSW Ministry of Health
  • Macquarie Group Foundation
  • Medical Research Council
  • National Health and Medical Research Council (1021970)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
schizophrenia, bipolar disorder, neuroinflammation, stress response, glucocorticoid receptor signaling, alpha-1-antichymotrypsin, gene expression, transcriptome, neuroimmune signaling, psychosis, biotypes
MeSH terms
Adult, Bipolar Disorder, Cerebral Cortex, Female, Humans, Inflammation, Male, Middle Aged, Schizophrenia, Stress, Psychological, Cohort Studies, Biomarkers, Gene Expression, Young Adult

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