Altered Homotopic Functional Connectivity Within White Matter in the Early Stages of Alzheimer's Disease.
Altered Homotopic Functional Connectivity Within White Matter in the Early Stages of Alzheimer's Disease.
复制标题
阿尔茨海默病早期白质内同位功能连接的改变
DOI：
10.3389/fnins.2021.697493
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发表时间：
2021
影响因子：
4.3
通讯作者：
Biswal BB
中科院分区：
文献类型：
--
作者：
Wang P;Wang Z;Wang J;Jiang Y;Zhang H;Li H;Biswal BB
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder with memory loss and cognitive impairment. The white matter (WM) BOLD signal has recently been shown to provide an important role in understanding the intrinsic cerebral activity. Although the altered homotopic functional connectivity within gray matter (GM-HFC) has been examined in AD, the abnormal HFC to WM remains unknown. The present study sought to identify changes in the WM-HFC and anatomic characteristics by combining functional magnetic resonance imaging with diffusion tensor imaging (DTI). Resting-state and DTI magnetic resonance images were collected from the OASIS-3 dataset and consisted of 53 mild cognitive impairment (MCI) patients, 90 very MCI (VMCI), and 100 normal cognitive (NC) subjects. Voxel-mirrored HFC was adopted to examine whether WM-HFC was disrupted in VMCI and MCI participants. Moreover, the DTI technique was used to investigate whether specific alterations of WM-HFC were associated with anatomic characteristics. Support vector machine analyses were used to identify the MCI and VMCI participants using the abnormal WM-HFC as the features. Compared with NC, MCI, and VMCI participants showed significantly decreased GM-HFC in the middle occipital gyrus and inferior parietal gyrus and decreased WM-HFC in the bilateral middle occipital and parietal lobe-WM. In addition, specific WM-functional network alteration for the bilateral sub-lobar-WM was found in MCI subjects. MCI subjects showed abnormal anatomic characteristics for bilateral sub-lobar and parietal lobe-WM. Results of GM-HFC mainly showed common neuroimaging features for VMCI and MCI subjects, whereas analysis of WM-HFC showed specific clinical neuromarkers and effectively compensated for the lack of GM-HFC to distinguish NC, VMCI, and MCI subjects.
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影响因子：
4.8
作者：
Li, Jiao;Biswal, Bharat B.;Liao, Wei
通讯作者：
Liao, Wei
影响因子：
10.6
作者：
Kelly, Clare;Zuo, Xi-Nian;Gotimer, Kristin;Cox, Christine L.;Lynch, Lauren;Brock, Dylan;Imperati, Davide;Garavan, Hugh;Rotrosen, John;Castellanos, F. Xavier;Milham, Michael P.
通讯作者：
Milham, Michael P.
影响因子：
2.5
作者：
Hao, J;Li, KC;Zhou, XL
通讯作者：
Zhou, XL
影响因子：
3.7
作者：
Anderson, Jeffrey S.;Druzgal, T. Jason;Lainhart, Janet E.
通讯作者：
Lainhart, Janet E.
影响因子：
3.7
作者：
Matsuo, Koji;Harada, Kenichiro;Watanabe, Yoshifumi
通讯作者：
Watanabe, Yoshifumi