Cited by 931Tryptophan and brain disordersSchizophrenia research and treatmentNeuroinflammation and Neurodegeneration Mechanisms

Inflammation and immunity in schizophrenia: implications for pathophysiology and treatment

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Khandaker, Golam M, Cousins, Lesley, Deakin, Julia, Lennox, Belinda R, Yolken, Robert, Jones, Peter B·2015·The Lancet Psychiatry

Abstract

Complex interactions between the immune system and the brain might have important aetiological and therapeutic implications for neuropsychiatric brain disorders. A possible association between schizophrenia and the immune system was postulated over a century ago, and is supported by epidemiological and genetic studies pointing to links with infection and inflammation. Contrary to the traditional view that the brain is an immunologically privileged site shielded behind the blood-brain barrier, studies in the past 20 years have noted complex interactions between the immune system, systemic inflammation, and the brain, which can lead to changes in mood, cognition, and behaviour. In this Review, we describe some of the important areas of research regarding innate and adaptive immune response in schizophrenia and related psychotic disorders that, we think, will be of interest to psychiatric clinicians and researchers. We discuss potential mechanisms and therapeutic implications of these findings, including studies of anti-inflammatory drugs in schizophrenia, describe areas for development, and offer testable hypotheses for future investigations.

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  • According to the immune hypothesis of psychiatric diseases, therapeutic control of peripheral and brain inflammation could offer novel tools in the treatment of severe mental and mood disorders, such as major depression.

    “according to the immune hypothesis of psychiatric diseases, therapeutic control of peripheral and brain inflammation could offer novel, important tools in the treatment of severe mental and mood disorders, such as major depression (Khandaker et al. 2015; Miller and Raison 2016).”
  • These triggers can induce inflammatory changes that are associated with reduced neurotransmitter signaling, increased oxidative stress, and reduced synaptic branching.

    “These triggers can induce inflammatory changes that are associated with reduced neurotransmitter signaling, increased oxidative stress, and reduced synaptic branching [118].”

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Research works printed but not linked: 1

  1. [12]Khandaker GM Clarke M Cannon M Jones PB Koenen K Rudenstine S Susser E Galeo S Life course approach to specific mental disorders: schizophrenia and related psychosis Life course epidemiology of mental disorders 2014 61 75 Oxford University Press New York, NY 1st edn

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Authors
Khandaker, G. M., Cousins, L., Deakin, J., Lennox, B. R., Yolken, R., & Jones, P. B.
Affiliations
  • University of Cambridge (GB)
  • University of Oxford (GB)
  • Johns Hopkins University (US)
Venue
The Lancet Psychiatry
Publisher
Elsevier BV
Published
2015-03
Volume
2
Issue
3
Pages
258-270
ISSN
2215-0366 (ISSN-L)
OpenAlex
W2121637331
Cited by
926
References
135
Citations by year
2026: 82 · 2025: 81 · 2024: 111 · 2023: 104 · 2022: 94 · 2021: 105 · 2020: 78 · 2019: 86 · 2018: 62 · 2017: 63 · 2016: 54 · 2015: 5
FWCI
3.45
Type
journal article
Language
en
Open access
Locations
  • The Lancet Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • Bristol Research (University of Bristol) (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Apollo (University of Cambridge) (acceptedVersion)
  • Explore Bristol Research (submittedVersion)
Funders
  • Wellcome Trust to GMK ((094790/Z/10/Z; 2010-'13))
  • National Institute of Mental Health ((MH-94268))
  • Wellcome Trust ((095844/Z/11/Z and 088869/Z/09/Z))
  • National Institute for Health Research ((RP-PG-0606–1335))
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
schizophrenia, inflammation, immunity, innate immune response, adaptive immune response, infection, blood-brain barrier, anti-inflammatory agents, psychosis, pathophysiology, treatment
MeSH terms
Humans, Immune System, Inflammation, Schizophrenia, Randomized Controlled Trials as Topic

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