Evidence map›Paper›PMID 34935072›Full record

ArticleEuropean archives of psychiatry and clinical neuroscience2022

Cognitive and functional deficits are associated with white matter abnormalities in two independent cohorts of patients with schizophrenia.

Shinichi Yamada, Shun Takahashi, Berend Malchow, Irina Papazova, Sophia Stöcklein, Birgit Ertl-Wagner, Boris Papazov, Ulrike Kumpf, Thomas Wobrock, Katriona Keller-Varady and 5 more

Open access · hybridAbstract read
In one paragraph

Article in European archives of psychiatry and clinical neuroscience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 14% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

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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

15 authors at 6 institutions in 3 countries.

Shinichi Yamada *Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Shun TakahashiDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Berend MalchowDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Irina PapazovaDepartment of Psychiatry Psychotherapy and Psychosomatics, Medical Faculty, University of Augsburg, Augsburg, Germany.
Sophia StöckleinDepartment of Radiology, University Hospital, LMU Munich, Munich, Germany.
Birgit Ertl-WagnerDivision of Neuroradiology, Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Canada.
Boris PapazovDepartment of Radiology, University Hospital, LMU Munich, Munich, Germany.
Ulrike KumpfDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Thomas WobrockDepartment of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany.
Katriona Keller-VaradyInstitute of Sports Medicine, Hannover Medical School, Hannover, Germany.
Alkomiet HasanDepartment of Psychiatry Psychotherapy and Psychosomatics, Medical Faculty, University of Augsburg, Augsburg, Germany.
Peter FalkaiDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Elias WagnerDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Florian J Raabe *Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany. florian.raabe@med.uni-muenchen.de.ORCID http://orcid.org/0000-0001-8538-0783
Daniel Keeser *Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany. daniel.keeser@med.uni-muenchen.de.
LMU Klinikum · DEUniversity of Augsburg · DEWakayama Medical University · JPHospital for Sick Children · CAKlinikum Darmstadt · DEMedizinische Hochschule Hannover · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSignificant evidence links white matter (WM) microstructural abnormalities to cognitive impairment in schizophrenia (SZ), but the relationship of these abnormalities with functional outcome remains unclear.

methodsIn two independent cohorts (C1, C2), patients with SZ were divided into two subgroups: patients with higher cognitive performance (SZ-HCP-C1, n = 25; SZ-HCP-C2, n = 24) and patients with lower cognitive performance (SZ-LCP-C1, n = 25; SZ-LCP-C2, n = 24). Healthy controls (HC) were included in both cohorts (HC-C1, n = 52; HC-C2, n = 27). We compared fractional anisotropy (FA) of the whole-brain WM skeleton between the three groups (SZ-LCP, SZ-HCP, HC) by a whole-brain exploratory approach and an atlas-defined WM regions-of-interest approach via tract-based spatial statistics. In addition, we explored whether FA values were associated with Global Assessment of Functioning (GAF) scores in the SZ groups.

resultsIn both cohorts, mean FA values of whole-brain WM skeleton were significantly lower in the SCZ-LCP group than in the SCZ-HCP group. Whereas in C1 the FA of the frontal part of the left inferior fronto-occipital fasciculus (IFOF) was positively correlated with GAF score, in C2 the FA of the temporal part of the left IFOF was positively correlated with GAF score.

conclusionsWe provide robust evidence for WM microstructural abnormalities in SZ. These abnormalities are more prominent in patients with low cognitive performance and are associated with the level of functioning.

Indexed as

SchizophreniaWhite MatterAnisotropyBrainCognitionDiffusion Tensor ImagingHumansCognitive deficitsConfirmationFractional anisotropyGlobal functioningReplicationSchizophrenia

Identifiers

PMID34935072
PMCPMC9388472
OpenAlexW4200417977

What OpenQuestion holds

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Registered trials

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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.