Evidence map›Paper›PMID 19125212›Full record

SynthesisJournal of psychiatry & neuroscience : JPN2009

A meta-analysis examining clinical predictors of hippocampal volume in patients with major depressive disorder.

Margaret C McKinnon, Kaan Yucel, Anthony Nazarov, Glenda M MacQueen

Abstract readMeta-AnalysisReview
In one paragraph

Synthesis in Journal of psychiatry & neuroscience : JPN, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 309 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
309citing papers in PubMed, 8 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

309 citing papers in PubMed, 8 syntheses or guidelines pooled it.

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  14. Hippocampal volume and depression among young children.Psychiatry research. Neuroimaging · 2019
    Trial
  15. Pretreatment and early-treatment cortical thickness is associated with SSRI treatment response in major depressive disorder.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018
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  19. Nutritional state-dependent changes in subcortical limbic structures in anorexia nervosa are linked to leptin, ghrelin, and neurofilament light.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  20. Review

249 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

4 authors.

Margaret C McKinnonDepartment of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada.
Kaan Yucel
Anthony Nazarov
Glenda M MacQueen

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSome, although not all, studies report small hippocampal volume in patients with major depressive disorder (MDD) relative to healthy controls. Here, we explore the contribution of key demographic and clinical variables to this difference.

methodsWe used meta-analytic techniques to provide an updated analysis of data from 32 magnetic resonance imaging studies of hippocampal volume in patients with MDD.

resultsOur analysis confirmed the difference in hippocampal volume, but only among patients with MDD whose duration of illness was longer than 2 years or who had more than 1 disease episode. We found no such effect in studies that included patients who did not fit these criteria. The effect was limited to children and middle-aged or older adults. Analyzed collectively, studies including young adult patients showed equivalent hippocampal volumes across MDD patients and controls, a result that may be attributable to a reduced burden of illness in this population. Age at onset of disease, severity of depression at the time of scanning, sex and slice thickness did not contribute to differences in hippocampal volume between patients with MDD and controls. LIMITATIONS: The small size of many of the clinical and demographic subgroups may have limited statistical power to detect between-group differences.

conclusionAlthough all studies were cross-sectional, our results suggest that hippocampal volume reductions generally occur after disease onset in patients with MDD. These findings have implications for the timing of clinical interventions aimed at reducing the impact of MDD on neuronal structure and function.

Indexed as

AdultAgedAgingFemaleHippocampusHumansMajor Depressive DisorderMaleMiddle AgedPredictive Value of Tests

Identifiers

PMID19125212
PMCPMC2612082

What OpenQuestion holds

Textmetadata
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.