The changes in resting-state functional connectivity in stroke survivors with depression
10.3760/cma.j.issn.0254-1424.2021.06.007
- VernacularTitle:脑卒中后抑郁患者基于背外侧前额叶种子点的静息态功能连接及低频振幅变化
- Author:
Hongxia YU
1
;
Ping ZHANG
;
Zhaohui ZHANG
;
Haiqing YAN
;
Yongkui GUI
;
Jing SHU
;
Ruirui ZHU
;
Jinggui SONG
Author Information
1. 新乡医学院第一附属医院神经内科，新乡 453000
- Keywords:
Post-stroke depression;
Resting-state functional magnetic resonance;
Functional connectivity;
Low frequency ampliude fluctuations;
Inflammation indicators
- From:
Chinese Journal of Physical Medicine and Rehabilitation
2021;43(6):514-519
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze any changes in the functional connectivity between the seed points of the dorsolateral prefrontal cortex (DLPFC) and the whole brain, as well as any fluctuations in the low-frequency amplitude among persons with post-stroke depression (PSD). The aim was to develop correlations among functional imaging results, clinical scales, and inflammation indicators including high-sensitivity C-reactive protein (hs-CRP), interleukin 6 (IL-6), interleukin 2 (IL-2), interleukin 10 (IL-10), interleukin 17a (IL-17a) and interferon-γ (IFN-γ).Methods:Between 2016 and 2020, 55 ischemic stroke survivors were tested. The 28 scoring 7 or more on the Hamilton Depression Scale (HAMD-17) formed the PSD group, while the 27 others formed the control group. Functional magnetic resonance images were collected, and serum inflammation indicators were determined.Results:When seed points in the left DLPFC were used, in the PSD group the frontal cortex (FC) decreased in one cluster, with a voxel of 129mm3 and the MNI coordinates (x=9, y=30, z=33) indicating that the anatomical automatic labeling (AAL) brain regions were the Cingulum_Ant_L, Cingulum_Mid_R and the frontal_Sup_Medial_L. When the right DLPFC was used as the seed point the FC again decreased in one cluster, with voxels of 44mm 3 and the MNI coordinates (x=-27, y=12, z=47) referring to the AAL brain region of the frontal_Mid_L. In the PSD group, the FC value of abnormal brain areas with the R-DLPFC as the seed point was positively correlated with time since stroke. In the control group, the FC value of abnormal brain areas with L-DLPFC as the seed point was negatively correlated with MoCA, while with R-DLPFC as the seed point it was positively correlated with IFN-γ. The FC values of abnormal areas of the brain showed no significant correlation with other clinical scales, inflammation indicators or lesion volume. Conclusion:Abnormal functional connections within the executive control network and between the salience networks may participate in the mechanism of PSD, and may be related to the time since stroke, cognitive functioning, and IFN-γ levels.
