Cited by 217Tryptophan and brain disordersSchizophrenia research and treatmentNeuroinflammation and Neurodegeneration Mechanisms

Serum and gene expression profile of cytokines in first-episode psychosis

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Di Nicola, Marco, Cattaneo, Annamaria, Hepgul, Nilay, Di Forti, Marta, Aitchison, Katherine J., Janiri, Luigi, Murray, Robin M., Dazzan, Paola +2 more·2013·Brain Behavior and Immunity

Abstract

An inflammatory syndrome has been previously reported in chronic schizophrenia. The aims of this study were to investigate: (1) serum levels and leukocyte gene expression of cytokines in patients with first-episode psychosis and controls; and (2) possible causes of abnormal cytokine levels in first-episode psychosis, testing their association with psychosocial stressors, current nicotine and cannabis use, and duration of antipsychotic treatment. We recruited 24 first-episode psychosis patients and 24 healthy controls matched for age, gender, ethnicity and body mass index. Serum interleukin(IL)-1α, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, Tumour Necrosis Factor- α (TNF-α), Interferon- γ (IFN-γ), vascular endothelial growth factor (VEGF), epidermal growth factor (EGF), and monocyte chemotactic protein-1 (MCP-1) were analysed in all subjects. Leukocyte gene expression analyses were conducted only for those cytokines that were different between-groups in the serum analyses. Patients had significantly higher serum levels of IL-1α (effect size d=0.6, p=0.03), IL-1β (d=0.4, p=0.01), IL-8 (d=0.6, p=0.01) and TNF-α (d=0.7, p=0.05) and a trend for higher IL-6 serum levels (d=0.3, p=0.09) when compared with controls. Leukocyte m-RNA levels of IL-1α (d=0.6, p=0.04), IL-6 (d=0.7, p=0.01) and TNF-α (d=1.6, p<0.001), but not IL-1β and IL-8, were also significantly higher in patients. A history of childhood trauma was associated with higher TNF-α serum levels (p=0.01), while more recent stressful life-events were associated with higher TNF-α mRNA levels in leukocytes (p=0.002). In conclusion, first-episode psychosis is characterised by a pro-inflammatory state supported, at least in part, by activation of leukocytes. Past and recent stressors contribute to this pro-inflammatory state.

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  1. Henderson D.C. Schizophrenia and comorbid metabolic disorders J Clin. Psychiatry 66 Suppl 6 2005 11 20 16107179

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Authors
Di Nicola, M., Cattaneo, A., Hepgul, N., Di Forti, M., Aitchison, K. J., Janiri, L., Murray, R. M., Dazzan, P., Pariante, C. M., & Mondelli, V.
Affiliations
  • King's College London (GB)
  • Università Cattolica del Sacro Cuore (IT)
Corresponding author
Mondelli, Valeria
Venue
Brain Behavior and Immunity
Publisher
Elsevier BV
Published
2013-07
Volume
31
Pages
90-95
ISSN
0889-1591 (ISSN-L)
OpenAlex
W2036825944
Cited by
217
References
46
Citations by year
2026: 11 · 2025: 11 · 2024: 9 · 2023: 20 · 2022: 11 · 2021: 18 · 2020: 20 · 2019: 16 · 2018: 23 · 2017: 15 · 2016: 12 · 2015: 19 · 2014: 19 · 2013: 11 · 2012: 2
FWCI
5.02
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior and Immunity (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by)
  • Research Portal (King's College London) (submittedVersion)
Funders
  • South London and Maudsley NHS Foundation Trust
  • Wellcome Trust
  • National Institute for Health and Care Research (CL-2008-17-005)
  • British Heart Foundation
  • Academy of Medical Sciences (AMS-SGCL5-Mondelli)
  • European College of Neuropsychopharmacology
  • Medical Research Council (MR/J002739/1)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
first-episode psychosis, cytokines, inflammation, interleukin-1, interleukin-6, TNF-α, leukocyte gene expression, childhood trauma, psychosocial stress, nicotine use, cannabis use, antipsychotic treatment duration, proinflammatory state
MeSH terms
Adult, Female, Humans, Male, Psychotic Disorders, Stress, Psychological, Gene Expression, Cytokines

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