Microstructural abnormalities in children with post-traumatic stress disorder: a diffusion tensor imaging study at 3.0T.

Microstructural abnormalities in children with post-traumatic stress disorder: a diffusion tensor imaging study at 3.0T.
复制标题

创伤后应激障碍儿童的微观结构异常:3.0T 扩散张量成像研究

DOI:
10.1038/srep08933
复制
发表时间:
2015-03-11
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:
Lei D;Li L;Li L;Suo X;Huang X;Lui S;Li J;Bi F;Kemp GJ;Gong Q

文献摘要

参考文献

被引文献

相似文献

创伤后应激障碍(PTSD)是一种严重的焦虑症,其特征是重新体验、回避和过度警觉。创伤后应激障碍(尤其是儿童)的脑微结构异常尚未得到很好的表征。本研究的目的是使用 MR 扩散张量成像 (DTI) 来识别 PTSD 儿童与经历相同限时创伤的非 PTSD 对照儿童的大脑微结构变化。我们研究了 27 名患有 PTSD 的儿童和 24 名年龄和性别匹配的无 PTSD 的创伤对照儿童,他们都经历过 2008 年四川大地震。获取 DTI 数据并根据分数各向异性 (FA)、平均扩散率 (MD)、径向扩散率 (RD) 和轴向扩散率 (AD) 进行分析。患有 PTSD 的儿童不仅在 FA 方面表现出异常模式,而且在 MD、AD 和 RD 扩散测量方面也表现出异常模式。大多数异常大脑区域属于两个重要网络:默认模式网络(包括楔前叶和角回)和显着网络(包括岛叶、壳核和丘脑)。这项 DTI 研究识别了大地震后患有 PTSD 的儿童的微观结构异常,我们的结果与儿童 PTSD 伴随着显着网络和默认模式网络之间的连接不平衡的建议是一致的,这一发现具有潜在的病理生理学意义。
Posttraumatic stress disorder (PTSD) is a severe anxiety disorder characterized by re-experiencing, avoidance and hyperarousal. Brain microstructure abnormalities in PTSD, especially in children, are not yet well characterized. The aim of this study was to use MR diffusion tensor imaging (DTI) to identify brain microstructure alterations in children with PTSD compared to non-PTSD controls who experienced the same time-limited trauma. We studied 27 children with PTSD and 24 age- and gender-matched traumatized controls without PTSD, who all experienced the 2008 Sichuan major earthquake. DTI data were acquired and analyzed in terms of fractional anisotropy (FA), mean diffusivity (MD), radial diffusivity (RD) and axial diffusivity (AD). Children with PTSD showed an abnormal pattern, not only of FA, but also of the diffusivity measures MD, AD and RD. Most of the abnormal brain regions belonged to two important networks: the default-mode network, including precuneus and angular gyrus and the salience network, including insula, putamen and thalamus. This DTI study identifies microstructural abnormalities of children with PTSD after a major earthquake, our results are consistent with the suggestion that pediatric PTSD is accompanied by a connectivity disequilibrium between the salience and default-mode networks, a finding of potential pathophysiological significance.
神经影像学方法的新功能?
DOI: 10.1111/j.1749-6632.2009.04420.x
发表时间: 2009-03
影响因子: 5.2
作者:
Bandettini PA
通讯作者: Bandettini PA
健康儿童的丘脑皮质连通性:8至17岁之间的不对称和稳健的发育变化。
DOI: 10.3174/ajnr.a2417
发表时间: 2011-05
期刊: AJNR. American journal of neuroradiology
影响因子: --
作者:
Alkonyi B;Juhász C;Muzik O;Behen ME;Jeong JW;Chugani HT
通讯作者: Chugani HT
DOI: 10.1016/s0149-7634(03)00013-7
发表时间: 2003-01-01
影响因子: 8.2
作者:
De Bellis, MD;Keshavan, MS
通讯作者: Keshavan, MS
DOI: 10.1006/nimg.2000.0582
发表时间: 2000-06-01
期刊: NEUROIMAGE
影响因子: 5.7
作者:
Ashburner, J;Friston, KJ
通讯作者: Friston, KJ
DOI: 10.1002/jclp.21845
发表时间: 2012-06-01
影响因子: 3
作者:
Conybeare, Daniel;Behar, Evelyn;Borkovec, T. D.
通讯作者: Borkovec, T. D.