Evidence map›Paper›PMID 22691300›Full record

SynthesisJournal of psychiatry & neuroscience : JPN2013

Is depression a disconnection syndrome? Meta-analysis of diffusion tensor imaging studies in patients with MDD.

Yi Liao, Xiaoqi Huang, Qizhu Wu, Chuang Yang, Weihong Kuang, Mingying Du, Su Lui, Qiang Yue, Raymond C K Chan, Graham J Kemp and 1 more

Open access · bronzeAbstract readMeta-Analysis
In one paragraph

Synthesis in Journal of psychiatry & neuroscience : JPN, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 180 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
180citing papers in PubMed, 9 pooled it
24.7field-weighted citation impact, top 1% 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

180 citing papers in PubMed, 9 syntheses or guidelines pooled it, 461 citations in OpenAlex.

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  11. White matter predicts tDCS antidepressant effects in a sham-controlled clinical trial study.European archives of psychiatry and clinical neuroscience · 2023
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120 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

11 authors at 5 institutions in 3 countries.

Yi LiaoHuaxi MR Research Center, Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.
Xiaoqi Huang
Qizhu Wu
Chuang Yang
Weihong Kuang
Mingying Du
Su Lui
Qiang Yue
Raymond C K Chan
Graham J Kemp
Qiyong Gong
Sichuan University · CNWest China Hospital of Sichuan University · CNInstitute of Psychology, Chinese Academy of Sciences · CNUniversity of Liverpool · GBWenzhou Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMany studies using diffusion tensor imaging (DTI) have demonstrated impaired white matter integrity in patients with major depressive disorder (MDD), with significant results found in diverse brain regions. We sought to identify whether there are consistent changes of regional white matter integrity in patients with MDD, as shown by decreased fractional anisotropy in DTI.

methodA systematic search strategy was used to identify relevant whole brain voxel-based DTI studies of patients with MDD in relation to comparison groups. Relevant databases were searched for studies published between January 1994 and February 2011 using combinations of the terms "DTI" or "diffusion tensor;" "whole brain" or "voxel-based;" and "depress*." Using the studies that met our inclusion criteria, we performed a meta-analysis of the coordinates of decreased fractional anisotropy using the activation likelihood estimation (ALE) method, which detects 3-dimensional conjunctions of coordinates from multiple studies, weighted by sample size. We then used DTIquery software for fibre tracking to locate the fascicles involved in each region.

resultsWe included 11 studies with a combined sample of 231 patients with MDD and 261 comparison participants, providing 50 coordinates of decreased fractional anisotropy. Our meta-analysis identified 4 consistent locations of decreased fractional anisotropy in patients with MDD: white matter in the right frontal lobe, right fusiform gyrus, left frontal lobe and right occipital lobe. Fibre tracking showed that the main fascicles involved were the right inferior longitudinal fasciculus, right inferior fronto-occipital fasciculus, right posterior thalamic radiation and interhemispheric fibres running through the genu and body of the corpus callosum. LIMITATIONS: The number of studies included was relatively small, and the DTI data acquisition and analysis techniques were heterogeneous. The ALE method cannot handle studies with no significant group differences.

conclusionVoxel-based analysis of DTI studies of patients with MDD consistently identified decreased fractional anisotropy in the white matter fascicles connecting the prefrontal cortex within cortical (frontal, temporal and occipital lobes) and subcortical areas (amygdala and hippocampus). This isstrong evidence for the involvement of these neural circuits in the pathology of MDD.

Indexed as

AnisotropyBrainBrain MappingCorpus CallosumDiffusion Tensor ImagingFemaleHumansMajor Depressive DisorderMale

Identifiers

PMID22691300
PMCPMC3529219
OpenAlexW2122506124

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.