Evidence map›Paper›PMID 21306734›Full record

ArticleJournal of psychiatric research2011

Mean diffusivity and fractional anisotropy as indicators of disease and genetic liability to schizophrenia.

Kristi A Clark, Keith H Nuechterlein, Robert F Asarnow, Liberty S Hamilton, Owen R Phillips, Nathan S Hageman, Roger P Woods, Jeffry R Alger, Arthur W Toga, Katherine L Narr

Open access · greenAbstract read
In one paragraph

Article in Journal of psychiatric research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 3 pooled it
6.3field-weighted citation impact, top 3% 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

74 citing papers in PubMed, 3 syntheses or guidelines pooled it, 153 citations in OpenAlex.

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14 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

10 authors at 1 institution in 1 country.

Kristi A ClarkLaboratory of Neuro Imaging, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, CA, USA. kaclark@ucla.edu
Keith H Nuechterlein
Robert F Asarnow
Liberty S Hamilton
Owen R Phillips
Nathan S Hageman
Roger P Woods
Jeffry R Alger
Arthur W Toga
Katherine L Narr
University of California, Los Angeles · US

Funding

Center for Computational Biology (RMI)U54RR021813 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI TOGA, ARTHUR W · 2004 to 2010
$25.3M
YALE CENTER FOR THE: LEARNING &ATTENTIONP41RR013642 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI BEARER, ELAINE L · 1998 to 2011
$21.9M
STRESS AND EMOTIONAL REACTIVITYP50MH066286 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI NUECHTERLEIN, KEITH H · 2003 to 2014
$18.6M
DEVELOPMENTAL PROCESSES IN SCHIZOPHRENIC DISORDERSR01MH037705 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI NUECHTERLEIN, KEITH H · 1985 to 2010
$5.1M
TRANSMISSION OF VULNERABILITY FACTORS FOR SCHIZOPHRENIAR01MH049716 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI NUECHTERLEIN, KEITH H · 1994 to 2006
$2.9M
Mapping the MTL Memory System in SchizophreniaK01MH073990 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI NARR, KATHERINE L · 2006 to 2009
$611k
NCRR NIH HHS P41 RR013642NCRR NIH HHS U54 RR021813NIMH NIH HHS K01 MH073990NIMH NIH HHS MH037705NIMH NIH HHS MH049716NIMH NIH HHS MH066286NIMH NIH HHS MH073990NIMH NIH HHS P50 MH066286NIMH NIH HHS R01 MH037705NIMH NIH HHS R01 MH049716
6 · The paper itself

Abstract

The goals of this study were to first determine whether the fractional anisotropy (FA) and mean diffusivity (MD) of major white matter pathways associate with schizophrenia, and secondly to characterize the extent to which differences in these metrics might reflect a genetic predisposition to schizophrenia. Differences in FA and MD were identified using a comprehensive atlas-based tract mapping approach using diffusion tensor imaging and high-resolution structural data from 35 patients, 28 unaffected first-degree relatives of patients, 29 community controls, and 14 first-degree relatives of controls. Schizophrenia patients had significantly higher MD in the following tracts compared to controls: the right anterior thalamic radiations, the forceps minor, the bilateral inferior fronto-occipital fasciculus (IFO), the temporal component of the left superior longitudinal fasciculus (tSLF), and the bilateral uncinate. FA showed schizophrenia effects and a linear relationship to genetic liability (represented by schizophrenia patients, first-degree relatives, and controls) for the bilateral IFO, the left inferior longitudinal fasciculus (ILF), and the left tSLF. Diffusion tensor imaging studies have previously identified white matter abnormalities in all three of these tracts in schizophrenia; however, this study is the first to identify a significant genetic liability. Thus, FA of these three tracts may serve as biomarkers for studies seeking to identify how genes influence brain structure predisposing to schizophrenia. However, differences in FA and MD in frontal and temporal white matter pathways may be additionally driven by state variables that involve processes associated with the disease.

Indexed as

Diffusion Magnetic Resonance ImagingImage Processing, Computer-AssistedSchizophrenic PsychologyAdolescentAdultAntipsychotic AgentsBrainBrief Psychiatric Rating ScaleDominance, CerebralFemaleGenetic Predisposition to DiseaseHumansMaleMiddle AgedNeural PathwaysReference ValuesAntipsychotic Agents

Identifiers

PMID21306734
PMCPMC3109158
OpenAlexW2122362881

What OpenQuestion holds

Textmetadata
LicenceTDM
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.