Reduced fractional anisotropy and axial diffusivity in white matter in 22q11.2 deletion syndrome: a pilot study.

Reduced fractional anisotropy and axial diffusivity in white matter in 22q11.2 deletion syndrome: a pilot study.
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DOI:
10.1016/j.schres.2012.06.032
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发表时间:
2012-10
影响因子:
4.5
通讯作者:
Kubicki M
Kubicki M
中科院分区:
医学2区
文献类型:
--
作者:
Kikinis Z;Asami T;Bouix S;Finn CT;Ballinger T;Tworog-Dube E;Kucherlapati R;Kikinis R;Shenton ME;Kubicki M

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22q11.2缺失综合征(22q11.2DS)个体精神分裂症的发生率为30%。我们用基于束的空间统计方法(TBSS)比较了22q11.2DS非精神分裂症患者和一组匹配的健康对照组的白质(WM)。我们发现在左侧顶叶下方的WM中,局部的分数各向异性(FA)和轴向弥散率(AD;轴突完整性的测量)减少。径向弥散率(RD;髓鞘完整性的测量)没有观察到变化。值得注意的是,对慢性精神分裂症患者的研究报告显示,在西医中,FA减少,AD没有变化,RD增加。我们的研究结果表明,22q11.2DS患者的WM结构与精神分裂症患者不同。
Individuals with 22q11.2 deletion syndrome (22q11.2DS) evince a 30% incidence of schizophrenia. We compared the white matter (WM) of 22q11.2DS patients without schizophrenia to a group matched healthy controls using Tract-Based-Spatial-Statistics (TBSS). We found localized reduction of Fractional Anisotropy (FA) and Axial Diffusivity (AD; measure of axonal integrity) in WM underlying the left parietal lobe. No changes in Radial Diffusivity (RD; measure of myelin integrity) were observed. Of note, studies in chronic schizophrenia patients report reduced FA, no changes in AD, and increases in RD in WM. Our findings suggest different WM microstructure in 22q11.2DS than in patients with schizophrenia.
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发表时间: 2011-04-15
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