Evidence map›Paper›PMID 34560530›Full record

SynthesisNeuroImage. Clinical2021

Cognitive impairment and depression: Meta-analysis of structural magnetic resonance imaging studies.

Lenka Zacková, Martin Jáni, Milan Brázdil, Yuliya S Nikolova, Klára Marečková

Open access · goldAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in NeuroImage. Clinical, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed, 4 pooled it
9.7field-weighted citation impact, top 1% 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.

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

86 citing papers in PubMed, 4 syntheses or guidelines pooled it, 153 citations in OpenAlex.

  1. Anxiety, depression and acromegaly: a systematic review.Journal of endocrinological investigation · 2025
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Trial
  6. Trial
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Differentiating Between Major Depressive Disorder and Bipolar Disorder.Advances in experimental medicine and biology · 2026
    Review
  17. Article
  18. Article
  19. Article
  20. Article

26 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

5 authors at 4 institutions in 2 countries.

Lenka ZackováBrain and Mind Research Programme, Central European Institute of Technology, Masaryk University (CEITEC MU), 5 Kamenice, Brno 62500, Czech Republic; Department of Neurology, St. Anne's University Hospital and Faculty of Medicine, Masaryk University, 664/53 Pekarska, Brno 65691, Czech Republic. Electronic address: l.zackova10@gmail.com.
Martin JániBrain and Mind Research Programme, Central European Institute of Technology, Masaryk University (CEITEC MU), 5 Kamenice, Brno 62500, Czech Republic; Department of Psychiatry, Faculty of Medicine, Masaryk University and University Hospital Brno, Jihlavská 20, Brno 62500, Czech Republic.
Milan BrázdilBrain and Mind Research Programme, Central European Institute of Technology, Masaryk University (CEITEC MU), 5 Kamenice, Brno 62500, Czech Republic; Department of Neurology, St. Anne's University Hospital and Faculty of Medicine, Masaryk University, 664/53 Pekarska, Brno 65691, Czech Republic.
Yuliya S NikolovaCampbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON M5T 1L8, Canada.
Klára MarečkováBrain and Mind Research Programme, Central European Institute of Technology, Masaryk University (CEITEC MU), 5 Kamenice, Brno 62500, Czech Republic; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 250 College Street, Toronto, ON M5T 1L8, Canada.
Masaryk University · CZCentre for Addiction and Mental Health · CASt. Anne's University Hospital Brno · CZUniversity Hospital Brno · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Longitudinal comorbidity of depression and cognitive impairment has been reported by number of epidemiological studies but the underlying mechanisms explaining the link between affective problems and cognitive decline are not very well understood. Imaging studies have typically investigated patients with major depressive disorder (MDD) and mild cognitive impairment (MCI) separately and thus have not identified a structural brain signature common to these conditions that may illuminate potentially targetable shared biological mechanisms. We performed a meta-analysis of. 48 voxel-based morphometry (VBM) studies of individuals with MDD, MCI, and age-matched controls and demonstrated that MDD and MCI patients had shared volumetric reductions in a number of regions including the insula, superior temporal gyrus (STG), inferior frontal gyrus, amygdala, hippocampus, and thalamus. We suggest that the shared volumetric reductions in the insula and STG might reflect communication deficits and infrequent participation in mentally or socially stimulating activities, which have been described as risk factors for both MCI and MDD. We also suggest that the disease-specific structural changes might reflect the disease-specific symptoms such as poor integration of emotional information, feelings of helplessness and worthlessness, and anhedonia in MDD. These findings could contribute to better understanding of the origins of MDD-MCI comorbidity and facilitate development of early interventions.

Indexed as

Cognitive DysfunctionMajor Depressive DisorderBrainDepressionHumansMagnetic Resonance ImagingMajor depressive disorderMeta-analysisMild cognitive impairmentShared volumetric reductionsstructural magnetic resonance imaging (MRI)voxel-based morphometry (VBM)

Identifiers

PMID34560530
PMCPMC8473769
OpenAlexW3199636520

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.