Evidence map›Paper›PMID 39708105›Full record

SynthesisPsychopharmacology2025

Glutathione alterations in depression: a meta-analysis and systematic review of proton magnetic resonance spectroscopy studies.

Charles J M Bell, Mitul Mehta, Luwaiza Mirza, Allan H Young, Katherine Beck

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Psychopharmacology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Changes in Glutathione and Homocysteine Concentrations in Treatment-Resistant Depression After Electroconvulsive Therapy.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Article
  6. Journal of microbiology and biotechnology · 2026
    Article
  7. Ferroptosis in depression: mechanisms, association, and therapeutic strategies.Journal of neural transmission (Vienna, Austria : 1996) · 2026
    Review
  8. Peripheral S-(PGJBMC psychiatry · 2026
    Article
  9. Oxidative and Nitrosative Stress in Atopic Dermatitis and Depression: Similarities in Biomarkers and Pathophysiological Mechanisms.Pathophysiology : the official journal of the International Society for Pathophysiology · 2026
    Review
  10. Article
  11. Article
  12. Review
  13. Molecular, Structural, and Functional Neuroimaging in Major Depression.Advances in experimental medicine and biology · 2026
    Review
  14. Article
  15. Article
  16. Review
  17. Review
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

5 authors.

Charles J M BellDepartment of Forensic and Neurodevelopmental Science, Institute of Psychiatry, King's College, Psychology & Neuroscience, London, UK. Charles.1.bell@kcl.ac.uk.
Mitul MehtaDepartment of Neuroimaging, Institute of Psychiatry, King's College, Psychology & Neuroscience, London, UK.
Luwaiza MirzaDepartment of Psychosis Studies, Institute of Psychiatry, King's College, Psychology & Neuroscience, London, UK.
Allan H YoungDepartment of Psychological Medicine, Institute of Psychiatry, King's College, Psychology & Neuroscience, London, UK.
Katherine BeckDepartment of Psychosis Studies, Institute of Psychiatry, King's College, Psychology & Neuroscience, London, UK.

Funding

Wellcome Trust
6 · The paper itself

Abstract

backgroundMajor depressive disorder (MDD) is a common and serious psychiatric disorder associated with significant morbidity. There is mounting evidence for the role of oxidative stress in the pathophysiology of depression.

objectiveTo investigate alterations in the brain antioxidant glutathione in depression by undertaking a meta-analysis of proton magnetic resonance spectroscopy (1H-MRS).

methodsMEDLINE, EMBASE and Psych Info databases were searched for case-control studies that reported brain glutathione levels in patients with depression and healthy controls. Means and variances (SDS) were extracted for each measure to calculate effect sizes. Hedges g was used to quantify mean differences. The Meta-analysis of Observational Studies in Epidemiology (MOOSE) and Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines were followed.

results8 studies that reported measurements for 230 patients with depression and 216 controls were included. Three studies included data for the occipital cortex and five studies for the medial frontal cortex. In the occipital cortex, GSH was lower in the patient group as compared to controls (g = -0.98, 95% [CI, -1.45--0.50], P = < 0.001). In both the medial frontal cortex and in the combined all areas analysis there was no significant difference in GSH levels between cases and controls.

conclusionsThis study found reduced levels of GSH specifically in the occipital region of patients with MDD. This provides some support for the role of oxidative stress in depression and suggests that targeting this system may provide future therapeutic opportunities. However, the meta-analysis was limited by the small number and quality of the included studies. More studies using high quality MRS methods in a variety of brain regions are needed in the future to test this putative hypothesis.

Indexed as

BrainGlutathioneMajor Depressive DisorderProton Magnetic Resonance SpectroscopyHumansOccipital LobeOxidative StressGlutathioneGlutathioneGSHInflammationMajor depressive disorderMDDMRSOxidative stressProton magnetic resonance spectroscopy

Identifiers

PMID39708105
PMCPMC11890406

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.