Evidence map›Paper›PMID 25454798›Full record

ArticleSchizophrenia research2015

White matter diffusivity and microarchitecture among schizophrenia subjects and first-degree relatives.

Konasale M Prasad, Catherine H Upton, Claudiu S Schirda, Vishwajit L Nimgaonkar, Matcheri S Keshavan

Open access · greenAbstract read
In one paragraph

Article in Schizophrenia research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
3.2field-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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
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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

5 authors at 2 institutions in 1 country.

Konasale M PrasadDepartment of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States. Electronic address: prasadkm@upmc.edu.
Catherine H UptonDepartment of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
Claudiu S SchirdaDepartment of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
Vishwajit L NimgaonkarDepartment of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
Matcheri S KeshavanDepartment of Psychiatry, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States.
University of Pittsburgh · USBeth Israel Deaconess Medical Center · US

Funding

RGS4 Polymorphisms and Neurobiology of SchizophreniaK23MH072995 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI PRASAD, KONASALE M · 2005 to 2009
$877k
Neurobiology and Cognition in Early Onset Schizophrenia: Role of Environmental FaR21MH093540 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI PRASAD, KONASALE M · 2012 to 2013
$401k
NIMH NIH HHS K23 MH072995NIMH NIH HHS MH72995NIMH NIH HHS MH93540NIMH NIH HHS R21 MH093540
6 · The paper itself

Abstract

backgroundImpairments in structural and functional connections are demonstrated in schizophrenia. Certain disconnectional patterns may be biomarkers of elevated risk for schizophrenia. Convergent examination of multiple diffusion parameters and cognitive performance better illustrates pathophysiological significance of such disconnectional patterns.

methodsDiffusion Tensor Imaging data on 39 early-course schizophrenia subjects, 21 adolescent/young adult first-degree relatives (FDR) of schizophrenia subjects and 29 healthy controls (HC) were examined for threshold-free clusters of fractional anisotropy (FA) and radial diffusivity (RD) differences correcting for multiple comparisons. Regression models examined the variance contributed by anisotropy differences, age and sex. Group-wise differences on sustained attention, verbal memory and executive functions were examined and correlated with diffusivity measures controlling for age and sex.

resultsSchizophrenia subjects showed significantly decreased FA and increased RD in the forceps minor and superior longitudinal fasciculus (SLF) compared to HC. FDR showed decreased forceps minor FA compared to HC, and decreased SLF RD compared to HC and schizophrenia subjects. Quantitative RD differences were 2-3 fold higher compared to FA. Besides, forceps minor RD was inversely correlated with sustained attention in schizophrenia.

conclusionsSchizophrenia and FDR subjects show different patterns of white matter diffusivity compared to HC. While forceps minor changes may be a disease marker, SLF changes may be risk markers. In addition, RD may be a more robust risk marker than FA.

Indexed as

Diffusion Tensor ImagingFamilyAdolescentAdultBrain MappingCognition DisordersFemaleHumansImage Processing, Computer-AssistedMaleMiddle AgedNerve NetNeuropsychological TestsSchizophreniaStatistics as TopicWhite MatterCognitionConnectivityGeneticsHigh riskSchizophreniaWhite matter

Identifiers

PMID25454798
PMCPMC4277717
OpenAlexW2003454258

What OpenQuestion holds

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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.