Trauma-specific Grey Matter Alterations in PTSD.

Trauma-specific Grey Matter Alterations in PTSD.
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创伤后应激障碍 (PTSD) 中创伤特定的灰质改变。

DOI:
10.1038/srep33748
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发表时间:
2016-09-21
期刊:
影响因子:
4.6
通讯作者:
Gong Q
Gong Q
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Meng L;Jiang J;Jin C;Liu J;Zhao Y;Wang W;Li K;Gong Q

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以往的研究表明,不同类型的创伤导致的创伤后应激障碍(PTSD)患者在流行病学、临床表现和治疗结果上可能存在差异。然而,目前还不清楚这种差异是否与PTSD大脑的神经解剖学相关。为了阐明一般和创伤特异性皮质形态学改变,我们使用各向异性效应大小符号差分映射及其亚组分析,对不同创伤和创伤暴露对照(TECs,N = 347)的PTSD(N = 246)的灰质(GM)变化进行了荟萃分析。我们的研究结果显示,与TECs相比,PTSD脑的前额叶-边缘-纹状体系统中存在一般GM减少(GMR)病灶。值得注意的是,GMR模式是创伤特异性的。单一创伤性PTSD患者的GMR病灶主要位于双侧内侧前额叶皮质(mPFC)、前扣带回皮质(ACC)、纹状体、左侧海马和杏仁核;长期创伤性PTSD患者的GMR病灶主要位于左侧海马、纹状体、杏仁核和颞中回。此外,临床医生管理PTSD量表评分与双侧ACC和mPFC的GM变化呈负相关。我们的研究表明,创伤后应激障碍的GMR模式与特定的创伤,建议对创伤后应激障碍患者的分层诊断和治疗。
Previous studies have demonstrated that patients with posttraumatic stress disorder (PTSD) caused by different types of trauma may show divergence in epidemiology, clinical manifestation and treatment outcome. However, it is still unclear whether this divergence has neuroanatomic correlates in PTSD brains. To elucidate the general and trauma-specific cortical morphometric alterations, we performed a meta-analysis of grey matter (GM) changes in PTSD (N = 246) with different traumas and trauma-exposed controls (TECs, N = 347) using anisotropic effect-size signed differential mapping and its subgroup analysis. Our results revealed general GM reduction (GMR) foci in the prefrontal-limbic-striatal system of PTSD brains when compared with those of TECs. Notably, the GMR patterns were trauma-specific. For PTSD by single-incident traumas, GMR foci were found in bilateral medial prefrontal cortex (mPFC), anterior cingulate cortex (ACC), insula, striatum, left hippocampus and amygdala; and for PTSD by prolonged traumas in the left insula, striatum, amygdala and middle temporal gyrus. Moreover, Clinician-Administered PTSD Scale scores were found to be negatively associated with the GM changes in bilateral ACC and mPFC. Our study indicates that the GMR patterns of PTSD are associated with specific traumas, suggesting a stratified diagnosis and treatment for PTSD patients.
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