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Alterations in intrinsic functional networks in Parkinson's disease patients with depression: A resting-state functional magnetic resonance imaging study.


ABSTRACT:

Aims

The aim of this research was to investigate the alterations in functional brain networks and to assess the relationship between depressive impairment and topological network changes in Parkinson's disease (PD) patients with depression (DPD).

Methods

Twenty-two DPD patients, 23 PD patients without depression (NDPD), and 25 matched healthy controls (HCs) were enrolled. All participants were examined by resting-state functional magnetic resonance imaging scans. Graph theoretical analysis and network-based statistic methods were used to analyze brain network topological properties and abnormal subnetworks, respectively.

Results

The DPD group showed significantly decreased local efficiency compared with the HC group (P = .008, FDR corrected). In nodal metrics analyses, the degree of the right inferior occipital gyrus (P = .0001, FDR corrected) was positively correlated with the Hamilton Depression Rating Scale scores in the DPD group. Meanwhile, the temporal visual cortex, including the bilateral middle temporal gyri and right inferior temporal gyrus in the HC and NDPD groups and the left posterior cingulate gyrus in the NDPD group, was defined as hub region, but not in the DPD group. Compared with the HC group, the DPD group had extensive weakening of connections between the temporal-occipital visual cortex and the prefrontal-limbic network.

Conclusions

These results suggest that PD depression is associated with disruptions in the topological organization of functional brain networks, mainly involved the temporal-occipital visual cortex and the posterior cingulate gyrus and may advance our current understanding of the pathophysiological mechanisms underlying DPD.

SUBMITTER: Qiu YH 

PROVIDER: S-EPMC7871794 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature

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Publications

Alterations in intrinsic functional networks in Parkinson's disease patients with depression: A resting-state functional magnetic resonance imaging study.

Qiu Yi-Hui YH   Huang Zhi-Heng ZH   Gao Yu-Yuan YY   Feng Shu-Jun SJ   Huang Biao B   Wang Wan-Yi WY   Xu Qi-Huan QH   Zhao Jie-Hao JH   Zhang Yu-Hu YH   Wang Li-Min LM   Nie Kun K   Wang Li-Juan LJ  

CNS neuroscience & therapeutics 20201021 3


<h4>Aims</h4>The aim of this research was to investigate the alterations in functional brain networks and to assess the relationship between depressive impairment and topological network changes in Parkinson's disease (PD) patients with depression (DPD).<h4>Methods</h4>Twenty-two DPD patients, 23 PD patients without depression (NDPD), and 25 matched healthy controls (HCs) were enrolled. All participants were examined by resting-state functional magnetic resonance imaging scans. Graph theoretical  ...[more]

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