Altered Sex Chromosome Dosage Induces Coordinated Shifts in Cortical Anatomy and Anatomical Covariance.

Altered Sex Chromosome Dosage Induces Coordinated Shifts in Cortical Anatomy and Anatomical Covariance.
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性染色体剂量的改变会引起皮质解剖学和解剖协方差的协调变化。

DOI:
10.1093/cercor/bhz235
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发表时间:
2020
期刊:
Cerebral cortex (New York, N.Y. : 1991)
影响因子:
--
通讯作者:
Raznahan,Armin
Raznahan,Armin
中科院分区:
--
文献类型:
--
作者:
Xenophontos,Anastasia;Seidlitz,Jakob;Liu,Siyuan;Clasen,LivS;Blumenthal,JonathanD;Giedd,JayN;Alexander-Bloch,Aaron;Raznahan,Armin

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性染色体剂量(SCD)变异增加了神经精神损害的风险,这可能反映了SCD对脑组织的直接影响。在这里,我们1)定位X和Y染色体累积剂量对局部皮质厚度(CT)的影响,并使用NeuroSynth研究这些影响的潜在功能含义;2)测试该图是否由健康中明显的CT协方差模式组织;以及3)表征SCD对CT协方差本身的影响。我们使用301个具有不同数目的性染色体(169条整倍体,132条非整倍体)的结构性神经成像数据,模拟了SCD对大脑皮层308个同等大小的区域的CT和CT协方差的影响。安装SCD增加了双侧吻侧额叶皮质的CT,降低了外侧颞叶皮质的CT。SCD的目标区域与社会功能、语言处理和理解有关。在健康人群中,SCD敏感度相似的皮质区域显示CT协方差增加。最后,更大的SCD也增加了受SCD类似影响的地区之间的协方差。我们的研究包括:1)开发新的方法来比较大脑中典型的和与疾病相关的结构协方差网络;2)使用这些技术来解决和确定SCD对局部皮质解剖和解剖协方差的影响的组织原则。
Sex chromosome dosage (SCD) variation increases risk for neuropsychiatric impairment, which may reflect direct SCD effects on brain organization. Here, we 1) map cumulative X- and Y-chromosome dosage effects on regional cortical thickness (CT) and investigate potential functional implications of these effects using Neurosynth, 2) test if this map is organized by patterns of CT covariance that are evident in health, and 3) characterize SCD effects on CT covariance itself. We modeled SCD effects on CT and CT covariance for 308 equally sized regions of the cortical sheet using structural neuroimaging data from 301 individuals with varying numbers of sex chromosomes (169 euploid, 132 aneuploid). Mounting SCD increased CT in the rostral frontal cortex and decreased CT in the lateral temporal cortex, bilaterally. Regions targeted by SCD were associated with social functioning, language processing, and comprehension. Cortical regions with a similar degree of SCD-sensitivity showed heightened CT covariance in health. Finally, greater SCD also increased covariance among regions similarly affected by SCD. Our study both 1) develops novel methods for comparing typical and disease-related structural covariance networks in the brain and 2) uses these techniques to resolve and identify organizing principles for SCD effects on regional cortical anatomy and anatomical covariance.
UvA-DARE(数字学术知识库)克兰费尔特综合征社会认知的神经系统 (47,XXY):来自功能磁共振成像的证据
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DOI: 10.1093/cercor/bhu174
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期刊: CEREBRAL CORTEX
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