Evidence map›Paper›PMID 36291109›Full record

ArticleCells2022

Decreased Oligodendrocyte Number in Hippocampal Subfield CA4 in Schizophrenia: A Replication Study.

Andrea Schmitt, Laura Tatsch, Alisa Vollhardt, Thomas Schneider-Axmann, Florian J Raabe, Lukas Roell, Helmut Heinsen, Patrick R Hof, Peter Falkai, Christoph Schmitz

Open access · goldAbstract read
In one paragraph

Article in Cells, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 9% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Cellular pathology in the limbic system in schizophrenia.European archives of psychiatry and clinical neuroscience · 2023
    Article
  10. Oligodendrocytes matter: a review of animal studies on early adversity.Journal of neural transmission (Vienna, Austria : 1996) · 2023
    Review
  11. Remyelination in Multiple Sclerosis: Findings in the Cuprizone Model.International journal of molecular sciences · 2022
    Review
  12. Failed regeneration and inflammation in schizophrenia: two sides of the same coin?Journal of neural transmission (Vienna, Austria : 1996) · 2022
    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

10 authors at 5 institutions in 3 countries.

Andrea SchmittDepartment of Psychiatry and Psychotherapy, University Hospital, Ludwig Maximilian University (LMU) Munich, 80336 Munich, Germany.ORCID 0000-0002-5426-4023
Laura TatschDepartment of Psychiatry and Psychotherapy, University Hospital, Ludwig Maximilian University (LMU) Munich, 80336 Munich, Germany.
Alisa VollhardtInstitute of Anatomy, Faculty of Medicine, Ludwig Maximilian University (LMU) Munich, 80336 Munich, Germany.
Thomas Schneider-AxmannDepartment of Psychiatry and Psychotherapy, University Hospital, Ludwig Maximilian University (LMU) Munich, 80336 Munich, Germany.
Florian J RaabeDepartment of Psychiatry and Psychotherapy, University Hospital, Ludwig Maximilian University (LMU) Munich, 80336 Munich, Germany.
Lukas RoellDepartment of Psychiatry and Psychotherapy, University Hospital, Ludwig Maximilian University (LMU) Munich, 80336 Munich, Germany.
Helmut HeinsenMorphological Brain Research Unit, Department of Psychiatry, University of Würzburg, 97080 Würzburg, Germany.
Patrick R HofNash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029-6574, USA.
Peter FalkaiDepartment of Psychiatry and Psychotherapy, University Hospital, Ludwig Maximilian University (LMU) Munich, 80336 Munich, Germany.ORCID 0000-0003-2873-8667
Christoph SchmitzInstitute of Anatomy, Faculty of Medicine, Ludwig Maximilian University (LMU) Munich, 80336 Munich, Germany.ORCID 0000-0002-4065-1241
Ludwig-Maximilians-Universität München · DEAllen Institute for Brain Science · USMax Planck Institute of Psychiatry · DEUniversidade de São Paulo · BRUniversity of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hippocampus-related cognitive deficits in working and verbal memory are frequent in schizophrenia, and hippocampal volume loss, particularly in the cornu ammonis (CA) subregions, was shown by magnetic resonance imaging studies. However, the underlying cellular alterations remain elusive. By using unbiased design-based stereology, we reported a reduction in oligodendrocyte number in CA4 in schizophrenia and of granular neurons in the dentate gyrus (DG). Here, we aimed to replicate these findings in an independent sample. We used a stereological approach to investigate the numbers and densities of neurons, oligodendrocytes, and astrocytes in CA4 and of granular neurons in the DG of left and right hemispheres in 11 brains from men with schizophrenia and 11 brains from age- and sex-matched healthy controls. In schizophrenia, a decreased number and density of oligodendrocytes was detected in the left and right CA4, whereas mean volumes of CA4 and the DG and the numbers and density of neurons, astrocytes, and granular neurons were not different in patients and controls, even after adjustment of variables because of positive correlations with postmortem interval and age. Our results replicate the previously described decrease in oligodendrocytes bilaterally in CA4 in schizophrenia and point to a deficit in oligodendrocyte maturation or a loss of mature oligodendrocytes. These changes result in impaired myelination and neuronal decoupling, both of which are linked to altered functional connectivity and subsequent cognitive dysfunction in schizophrenia.

Indexed as

Dentate GyrusOligodendrogliaSchizophreniaAstrocytesHumansNeuronsCA4dentate gyrushippocampusneuronoligodendrocytepostmortemschizophreniastereology

Identifiers

PMID36291109
PMCPMC9600243
OpenAlexW4306367226

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.