原发性震颤灰质异常的体素级荟萃分析。
A Voxel-Wise Meta-Analysis of Gray Matter Abnormalities in Essential Tremor.
作者信息
Han Qing, Hou Yanbing, Shang Huifang
机构信息
Department of Neurology, West China Hospital, Sichuan University, Chengdu, China.
出版信息
Front Neurol. 2018 Jun 26;9:495. doi: 10.3389/fneur.2018.00495. eCollection 2018.
To identify the consistent gray matter (GM) volume changes from the whole brain voxel-based morphometry (VBM) studies on essential tremor (ET). The whole brain VBM studies comparing ET patients and healthy controls (HCs) were systematically searched in the PubMed, Embase and Web of Science from January 2000 to December 2017. Coordinates with significant differences in regional GM volume between ET patients and HCs were extracted from included studies and the meta-analysis was performed using effect size-based signed differential mapping (ES-SDM). A total of 10 studies with 241 ET patients and 213 HCs were included in the meta-analysis. The consistent GM volume reduction was detected in the left precuneus extending to the left posterior cingulate gyrus. The subgroup meta-analysis which included studies performed on a 3.0 T scanner revealed significant GM volume increases in the bilateral frontal lobes, bilateral temporal lobes, left insula, left striatum and left pons, but obvious publication biases of these findings were detected through funnel plots and Egger's tests. The consistent result of our meta-analysis showed a structural damage in the left precuneus extending to the left posterior cingulate gyrus, which possibly played a role in the cognitive dysfunction and depression in ET patients. It might enhance our understanding of the pathophysiological mechanisms underlying ET.
为了从基于体素的全脑形态测量学(VBM)研究中识别特发性震颤(ET)患者一致的灰质(GM)体积变化。我们系统检索了2000年1月至2017年12月期间PubMed、Embase和Web of Science数据库中比较ET患者和健康对照(HCs)的全脑VBM研究。从纳入研究中提取ET患者和HCs之间区域GM体积有显著差异的坐标,并使用基于效应量的符号差异映射(ES-SDM)进行荟萃分析。荟萃分析共纳入10项研究,包括241例ET患者和213例HCs。发现左侧楔前叶至左侧扣带回后部存在一致的GM体积减少。纳入在3.0 T扫描仪上进行的研究的亚组荟萃分析显示,双侧额叶、双侧颞叶、左侧岛叶、左侧纹状体和左侧脑桥GM体积显著增加,但通过漏斗图和Egger检验发现这些结果存在明显的发表偏倚。我们荟萃分析的一致结果显示,左侧楔前叶至左侧扣带回后部存在结构损伤,这可能在ET患者的认知功能障碍和抑郁中起作用。这可能会增强我们对ET潜在病理生理机制的理解。