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No Alterations of Brain Structural Asymmetry in Major Depressive Disorder: An ENIGMA Consortium Analysis
American Journal of Psychiatry ( IF 15.1 ) Pub Date : 2019-07-29 , DOI: 10.1176/appi.ajp.2019.18101144
Carolien G F de Kovel 1 , Lyubomir Aftanas 1 , André Aleman 1 , Aaron F Alexander-Bloch 1 , Bernhard T Baune 1 , Ivan Brack 1 , Robin Bülow 1 , Geraldo Busatto Filho 1 , Angela Carballedo 1 , Colm G Connolly 1 , Kathryn R Cullen 1 , Udo Dannlowski 1 , Christopher G Davey 1 , Danai Dima 1 , Katharina Dohm 1 , Tracy Erwin-Grabner 1 , Thomas Frodl 1 , Cynthia H Y Fu 1 , Geoffrey B Hall 1 , David C Glahn 1 , Beata Godlewska 1 , Ian H Gotlib 1 , Roberto Goya-Maldonado 1 , Hans Jörgen Grabe 1 , Nynke A Groenewold 1 , Dominik Grotegerd 1 , Oliver Gruber 1 , Mathew A Harris 1 , Ben J Harrison 1 , Sean N Hatton 1 , Ian B Hickie 1 , Tiffany C Ho 1 , Neda Jahanshad 1 , Tilo Kircher 1 , Bernd Krämer 1 , Axel Krug 1 , Jim Lagopoulos 1 , Elisabeth J Leehr 1 , Meng Li 1 , Frank P MacMaster 1 , Glenda MacQueen 1 , Andrew M McIntosh 1 , Quinn McLellan 1 , Sarah E Medland 1 , Bryon A Mueller 1 , Igor Nenadic 1 , Evgeny Osipov 1 , Martina Papmeyer 1 , Maria J Portella 1 , Liesbeth Reneman 1 , Pedro G P Rosa 1 , Matthew D Sacchet 1 , Knut Schnell 1 , Anouk Schrantee 1 , Kang Sim 1 , Egle Simulionyte 1 , Lisa Sindermann 1 , Aditya Singh 1 , Dan J Stein 1 , Benjamin N Ubani 1 , Nic J A Van der Wee 1 , Steven J A Van der Werff 1 , Ilya M Veer 1 , Yolanda Vives-Gilabert 1 , Henry Völzke 1 , Henrik Walter 1 , Martin Walter 1 , Melinda Westlund Schreiner 1 , Heather Whalley 1 , Nils Winter 1 , Katharina Wittfeld 1 , Tony T Yang 1 , Dilara Yüksel 1 , Dario Zaremba 1 , Paul M Thompson 1 , Dick J Veltman 1 , Lianne Schmaal 1 , Clyde Francks 1
Affiliation  

Objective:

Asymmetry is a subtle but pervasive aspect of the human brain, and it may be altered in several psychiatric conditions. MRI studies have shown subtle differences of brain anatomy between people with major depressive disorder and healthy control subjects, but few studies have specifically examined brain anatomical asymmetry in relation to this disorder, and results from those studies have remained inconclusive. At the functional level, some electroencephalography studies have indicated left fronto-cortical hypoactivity and right parietal hypoactivity in depressive disorders, so aspects of lateralized anatomy may also be affected. The authors used pooled individual-level data from data sets collected around the world to investigate differences in laterality in measures of cortical thickness, cortical surface area, and subcortical volume between individuals with major depression and healthy control subjects.

Methods:

The authors investigated differences in the laterality of thickness and surface area measures of 34 cerebral cortical regions in 2,256 individuals with major depression and 3,504 control subjects from 31 separate data sets, and they investigated volume asymmetries of eight subcortical structures in 2,540 individuals with major depression and 4,230 control subjects from 32 data sets. T1-weighted MRI data were processed with a single protocol using FreeSurfer and the Desikan-Killiany atlas. The large sample size provided 80% power to detect effects of the order of Cohen’s d=0.1.

Results:

The largest effect size (Cohen’s d) of major depression diagnosis was 0.085 for the thickness asymmetry of the superior temporal cortex, which was not significant after adjustment for multiple testing. Asymmetry measures were not significantly associated with medication use, acute compared with remitted status, first episode compared with recurrent status, or age at onset.

Conclusions:

Altered brain macro-anatomical asymmetry may be of little relevance to major depression etiology in most cases.



中文翻译:


重度抑郁症的脑结构不对称性没有改变:ENIGMA 联盟分析


 客观的:


不对称性是人脑的一个微妙但普遍的方面,它可能会在几种精神疾病中发生改变。 MRI 研究显示了重度抑郁症患者和健康对照组之间大脑解剖结构的细微差异,但很少有研究专门检查与这种疾病相关的大脑解剖不对称性,而且这些研究的结果仍然没有结论。在功能水平上,一些脑电图研究表明抑郁症患者存在左额皮质活动减退和右顶叶活动减退,因此侧化解剖学方面也可能受到影响。作者使用从世界各地收集的数据集中汇总的个体水平数据来调查重度抑郁症患者和健康对照受试者之间皮质厚度、皮质表面积和皮质下体积测量的偏侧性差异。

 方法:


作者研究了来自 31 个独立数据集的 2,256 名重度抑郁症患者和 3,504 名对照受试者的 34 个大脑皮层区域的厚度和表面积测量值的偏侧性差异,并研究了 2,540 名重度抑郁症患者和 2,540 名重度抑郁症患者的 8 个皮质下结构的体积不对称性。来自 32 个数据集的 4,230 名对照受试者。使用 FreeSurfer 和 Desikan-Killiany 图集通过单一协议处理 T 1加权 MRI 数据。大样本量提供了 80% 的功效来检测 Cohen's d=0.1 量级的影响。

 结果:


颞上皮层厚度不对称性对重度抑郁症诊断的最大效应量(Cohen's d)为0.085,经多次测试调整后不显着。不对称测量与药物使用、急性与缓解状态、首次发作与复发状态或发病年龄没有显着相关。

 结论:


在大多数情况下,大脑宏观解剖学不对称性的改变可能与重度抑郁症的病因关系不大。

更新日期:2019-12-02
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