Abstract
The study aimed to investigate the consistency and diversity between metabolic and structural brain networks at individual level constructed with divergence-based method in healthy Chinese population. The 18F-FDG PET and T1-weighted images of brain were collected from 209 healthy participants. The Jensen-Shannon divergence (JSD) was used to calculate metabolic or structural connectivities between any pair of brain regions and then individual brain networks were constructed. The global and regional topological properties of both networks were analyzed with graph theoretical analysis. Regional properties including nodal efficiency, degree, and betweenness centrality were used to define hub regions of networks. Cross-modality similarity of brain connectivity was analyzed with differential power (DP) analysis. The default mode network (DMN) had the largest number of brain connectivities with high DP values. The small-worldness indexes of metabolic and structural networks in all participants were greater than 1. The structural network showed higher assortativity and local efficiency than metabolic network, while hierarchy and global efficiency were greater in the metabolic network (all P < 0.001). Most of hubs in both networks were symmetrically spatial distributed in the regions of the DMN and subcortical nuclei including thalamus and amygdala, etc. The human brain presented small-world architecture both in perspective of individual metabolic and structural networks. There was a structural substrate that supported the brain to globally and efficiently integrate and process metabolic interaction across brain regions. The cross-modality cooperation or specialization in both networks might imply mechanisms of achieving higher-order brain functions.
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Jian-Guang Xu is the guarantor of this work and, as such, had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. All data supporting our findings are available on reasonable request.
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Acknowledgements
This work was supported by the National Key R&D Program of China [Grant Nos.: 2018YFC2001600, and 2018YFC2001604]; National Natural Science Foundation of China [Grant Nos.: 81802249, 81871836, 81874035, and 81902301]; Shanghai Science and Technology Committee [Grant Nos.: 18511108300, 18441903900, and 18441903800]; Shanghai Rising-Star Program [Grant No.: 19QA1409000]; Shanghai Municipal Commission of Health and Family Planning [Grant No.: 2018YQ02, and 201840224]; Shanghai Youth Top Talent Development Plan and Shanghai “Rising Stars of Medical Talent” Youth Development Program [Grant No.: RY411.19.01.10]; Program of Shanghai Academic Research Leader [Grant No.: 19XD1403600].
Funding
This work was supported by the National Key R&D Program of China (Grant Nos.: 2018YFC2001600, and 2018YFC2001604); National Natural Science Foundation of China (Grant Nos.: 81802249, 81871836, 81874035, and 81902301); Shanghai Science and Technology Committee (Grant Nos.: 18511108300, 18441903900, and 18441903800); Shanghai Rising-Star Program (Grant No.: 19QA1409000); Shanghai Municipal Commission of Health and Family Planning (Grant No.: 2018YQ02, and 201840224); Shanghai Youth Top Talent Development Plan and Shanghai “Rising Stars of Medical Talent” Youth Development Program (Grant No.: RY411.19.01.10); Program of Shanghai Academic Research Leader (Grant No.: 19XD1403600).
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Conceptualization: X-YH, M-XZ, J-JW; Methodology: X-YH, M-XZ, J-JW; Validation: CLS, X-G, J-PZ, DW; Formal Analysis: X-YH, M-XZ, J-JW, Y-LL; Writing-Original Draft: Y-LL, M-XZ; Writing Review & Editing: J-GX; All authors read and approved the final manuscript.
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Li, YL., Zheng, MX., Hua, XY. et al. Cross-modality comparison between structural and metabolic networks in individual brain based on the Jensen-Shannon divergence method: a healthy Chinese population study. Brain Struct Funct 228, 761–773 (2023). https://doi.org/10.1007/s00429-023-02616-z
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DOI: https://doi.org/10.1007/s00429-023-02616-z