Evidence map›Paper›PMID 29133955›Full record

SynthesisMolecular psychiatry2018

Chemokines in depression in health and in inflammatory illness: a systematic review and meta-analysis.

S P Leighton, L Nerurkar, R Krishnadas, C Johnman, G J Graham, J Cavanagh

Registry-linked trialOpen access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Molecular psychiatry, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06856161 (A Novel Blood Test as a Differential Diagnosis and Drug Efficacy Biomarker in Mental Health), which is not on this map. Cited by 155 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
155citing papers in PubMed, 2 pooled it
7.2field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT06856161 recruitingnot on this mapstarted 2025, after this paper: background citation

A Novel Blood Test as a Differential Diagnosis and Drug Efficacy Biomarker in Mental Health

TypeobservationalSponsorFraser HealthRan2025 to 2027Enrolled500ConditionsDepression - Major Depressive Disorder, Schizophenia Disorder, Psychosis, Mania (Neurotic)
3 · Its place in the literature

Who cites it

155 citing papers in PubMed, 2 syntheses or guidelines pooled it, 292 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Choroid plexus inflammation in bipolar disorder.Brain, behavior, and immunity · 2026
    Article
  7. Article
  8. Immunity in Rodent Models of Stress.Biological psychiatry · 2026
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Psychological Distress, Resilience, and Immunoinflammatory Signatures in Healthcare Workers During COVID-19.Stress and health : journal of the International Society for the Investigation of Stress · 2026
    Article
  17. Differentiating Between Major Depressive Disorder and Bipolar Disorder.Advances in experimental medicine and biology · 2026
    Review
  18. Review
  19. Review
  20. Article

95 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

S P LeightonInstitute of Health and Wellbeing, University of Glasgow, Glasgow, UK.
L NerurkarInstitute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK.ORCID 0000-0001-7108-4633
R KrishnadasInstitute of Neuroscience and Psychology, University of Glasgow, Glasgow, UK.
C JohnmanInstitute of Health and Wellbeing, University of Glasgow, Glasgow, UK.
G J GrahamInstitute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK.
J CavanaghInstitute of Health and Wellbeing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.
University of Glasgow · GB

Funding

Medical Research Council G0901113Medical Research Council MR/M019764/1Wellcome Trust
6 · The paper itself

Abstract

Inflammatory illness is associated with depression. Preclinical work has shown that chemokines are linked with peripheral-central crosstalk and may be important in mediating depressive behaviours. We sought to establish what evidence exists that differences in blood or cerebrospinal fluid chemokine concentration discriminate between individuals with depression and those without. Following PRISMA guidelines, we systematically searched Embase, PsycINFO and Medline databases. We included participants with physical illness for subgroup analysis, and excluded participants with comorbid psychiatric diagnoses. Seventy-three studies met the inclusion criteria for the meta-analysis. Individuals with depression had higher levels of blood CXCL4 and CXCL7 and lower levels of blood CCL4. Sensitivity analysis of studies with only physically healthy participants identified higher blood levels of CCL2, CCL3, CCL11, CXCL7 and CXCL8 and lower blood levels of CCL4. All other chemokines examined did not reveal significant differences (blood CCL5, CCL7, CXCL9, CXCL10 and cerebrospinal fluid CXCL8 and CXCL10). Analysis of the clinical utility of the effect size of plasma CXCL8 in healthy individuals found a negative predictive value 93.5%, given the population prevalence of depression of 10%. Overall, our meta-analysis finds evidence linking abnormalities of blood chemokines with depression in humans. Furthermore, we have demonstrated the possibility of classifying individuals with depression based on their inflammatory biomarker profile. Future research should explore putative mechanisms underlying this association, attempt to replicate existing findings in larger populations and aim to develop new diagnostic and therapeutic strategies.

Indexed as

ChemokinesDatabases, FactualDepressionHumansInflammationChemokines

Identifiers

PMID29133955
PMCPMC5754468
OpenAlexW2760604407

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.