Developmental changes in multivariate neuroanatomical patterns that predict risk for psychosis in 22q11.2 deletion syndrome.

Developmental changes in multivariate neuroanatomical patterns that predict risk for psychosis in 22q11.2 deletion syndrome.
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DOI:
10.1016/j.jpsychires.2010.07.008
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发表时间:
2011-03
影响因子:
4.8
通讯作者:
Reiss AL
Reiss AL
中科院分区:
医学2区
文献类型:
--
作者:
Gothelf D;Hoeft F;Ueno T;Sugiura L;Lee AD;Thompson P;Reiss AL

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本前瞻性研究的主要目的是检查逐体素灰色和白色物质体积(分别为GMV、WMV)的发育模式,这些发育模式可预测患有22 q11.2缺失综合征(22 q11.2DS)的青少年的精神病,22 q11.2DS是精神分裂症最常见的已知遗传危险因素。我们进行了纵向体素为基础的形态学分析,使用结构T1 MRI扫描从19个人与22q11.2DS和18个典型的发展中国家的个人。在22q11.2DS中,单变量分析显示,随着时间的推移,左背前额叶皮质(dPFC)GMV的更大降低预示着时间2时更严重的精神病症状。与时间1和时间2的典型发育个体相比,该dPFC区域在22q11.2DS中也显示出显著减少的体积,与COMTVal相比,22q11.2DS COMTMet随时间的减少更大,并且随着时间的推移,言语智商下降更大的人减少更大。另一方面,留一法多变量模式分析(MVPA)显示,在包括但不限于dPFC的区域中,GM和WM形态计量学随时间变化的模式预测精神病症状的风险(94.7-100%准确度)显著优于使用单变量分析(63.1%)。其他预测性脑区包括内侧PFC和背侧扣带。这项纵向前瞻性研究显示了新的证据的形态空间模式预测发展的精神病症状在22q11.2DS,并进一步阐明了异常的成熟过程在22q11.2DS。使用MVPA的神经影像学可能有望预测各种神经精神疾病的结局。
The primary objective of the current prospective study was to examine developmental patterns of voxel-by-voxel gray and white matter volumes (GMV, WMV, respectively) that would predict psychosis in adolescents with 22q11.2 deletion syndrome (22q11.2DS), the most common known genetic risk factor for schizophrenia. We performed a longitudinal voxel-based morphometry analysis using structural T1 MRI scans from 19 individuals with 22q11.2DS and 18 typically developing individuals. In 22q11.2DS, univariate analysis showed that greater reduction in left dorsal prefrontal cortical (dPFC) GMV over time predicted greater psychotic symptoms at Time2. This dPFC region also showed significantly reduced volumes in 22q11.2DS compared to typically developing individuals at Time1 and 2, greater reduction over time in 22q11.2DS COMTMet compared to COMTVal, and greater reduction in those with greater decline in verbal IQ over time. Leave- one-out multivariate pattern analysis (MVPA) on the other hand, showed that patterns of GM and WM morphometric changes over time in regions including but not limited to the dPFC predicted risk for psychotic symptoms (94.7-100% accuracy) significantly better than using univariate analysis (63.1%). Additional predictive brain regions included medial PFC and dorsal cingulum. This longitudinal prospective study shows novel evidence of morphometric spatial patterns predicting the development of psychotic symptoms in 22q11.2DS, and further elucidates the abnormal maturational processes in 22q11.2DS. The use of neuroimaging using MVPA may hold promise to predict outcome in a variety of neuropsychiatric disorders.
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