庞庞 (2025-01-31 20:05):
#paper doi   https://doi.org/10.1038/s41380-024-02442-7   Connectome architecture shapes large-scale cortical alterations in schizophrenia: a worldwide ENIGMA study作者测试了精神分裂症中的大尺度结构改变是否与正常的结构和功能连接组架构相关,并系统评估了这些网络水平改变的稳健性和普遍性。利用来自26个ENIGMA站点的2439名精神分裂症成年患者和2867名健康对照者的解剖MRI扫描,以及人类连接组计划的正常数据(n = 207),根据两个网络易感性模型评估了精神分裂症的结构改变:(i)中枢易损性模型,检查区域网络中心性与疾病相关改变幅度之间的关联;(ii)病变中心图谱绘制,识别其典型连接模式最接近疾病相关形态改变的区域。
Connectome architecture shapes large-scale cortical alterations in schizophrenia: a worldwide ENIGMA study
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Abstract:
AbstractSchizophrenia is a prototypical network disorder with widespread brain-morphological alterations, yet it remains unclear whether these distributed alterations robustly reflect the underlying network layout. We tested whether large-scale structural alterations in schizophrenia relate to normative structural and functional connectome architecture, and systematically evaluated robustness and generalizability of these network-level alterations. Leveraging anatomical MRI scans from 2439 adults with schizophrenia and 2867 healthy controls from 26 ENIGMA sites and normative data from the Human Connectome Project (n = 207), we evaluated structural alterations of schizophrenia against two network susceptibility models: (i) hub vulnerability, which examines associations between regional network centrality and magnitude of disease-related alterations; (ii) epicenter mapping, which identifies regions whose typical connectivity profile most closely resembles the disease-related morphological alterations. To assess generalizability and specificity, we contextualized the influence of site, disease stages, and individual clinical factors and compared network associations of schizophrenia with that found in affective disorders. Our findings show schizophrenia-related cortical thinning is spatially associated with functional and structural hubs, suggesting that highly interconnected regions are more vulnerable to morphological alterations. Predominantly temporo-paralimbic and frontal regions emerged as epicenters with connectivity profiles linked to schizophrenia’s alteration patterns. Findings were robust across sites, disease stages, and related to individual symptoms. Moreover, transdiagnostic comparisons revealed overlapping epicenters in schizophrenia and bipolar, but not major depressive disorder, suggestive of a pathophysiological continuity within the schizophrenia-bipolar-spectrum. In sum, cortical alterations over the course of schizophrenia robustly follow brain network architecture, emphasizing marked hub susceptibility and temporo-frontal epicenters at both the level of the group and the individual. Subtle variations of epicenters across disease stages suggest interacting pathological processes, while associations with patient-specific symptoms support additional inter-individual variability of hub vulnerability and epicenters in schizophrenia. Our work outlines potential pathways to better understand macroscale structural alterations, and inter- individual variability in schizophrenia.
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