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Erschienen in: Neurological Sciences 7/2021

24.11.2020 | Original Article

Different functional connectivity modes of the right fronto-insular cortex in akinetic-rigid and tremor-dominant Parkinson’s disease

verfasst von: Juan Wang, Yalian Shen, Juan Peng, Anran Wang, Xiaolin Wu, Xiaocui Chen, Jinjin Liu, Min Wei, Dezhi Zou, Yu Han, Oumei Cheng

Erschienen in: Neurological Sciences | Ausgabe 7/2021

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Abstract

Background

Patients with akinetic-rigid Parkinson’s disease (AR-PD) are more prone to cognitive decline and depressive symptoms than tremor-dominant PD (TD-PD) patients. The right fronto-insular cortex (rFIC), as a key node of salience network, plays a critical role in the switching between central executive network and default mode network. In this study, we explored the functional connectivity mode of rFIC with triple-brain networks, namely default mode network, salience network, and central executive network, in two motor subtypes of PD.

Methods

We recruited 44 PD patients (including the TD-PD group and AR-PD group) and 18 age-matched healthy controls (HCs). We performed functional connectivity (FC) analysis of resting-state functional MRI.

Results

Compared with TD-PD, decreased FC were found in the right insular cortex and bilateral anterior cingulate gyrus in AR-PD. Compared with HCs, decreased FC in the bilateral insula, the anterior cingulate gyrus, the precentral gyrus, and the right medial frontal gyrus were found; therein, the FC value of rFIC-precentral gyrus was positively correlated with the Unified Parkinson’s Disease Rating Scale-II score in AR-PD (p = 0.0482, r = 0.4162). While TD-PD showed decreased FC in the left insula as well as bilateral anterior cingulate gyrus when compared with HCs, and the FC value of the rFIC-left insula was positively correlated with its Hamilton Depression Rating Scale score (p = 0.02, r = 0.50).

Conclusion

The functional connectivity mode of rFIC in AR-PD differed from that in TD-PD. The decreased rFIC FC with the other nodes of salience network might be a potential indicator for AR-PD patients prone to develop cognitive decline and depressive symptoms.
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Metadaten
Titel
Different functional connectivity modes of the right fronto-insular cortex in akinetic-rigid and tremor-dominant Parkinson’s disease
verfasst von
Juan Wang
Yalian Shen
Juan Peng
Anran Wang
Xiaolin Wu
Xiaocui Chen
Jinjin Liu
Min Wei
Dezhi Zou
Yu Han
Oumei Cheng
Publikationsdatum
24.11.2020
Verlag
Springer International Publishing
Erschienen in
Neurological Sciences / Ausgabe 7/2021
Print ISSN: 1590-1874
Elektronische ISSN: 1590-3478
DOI
https://doi.org/10.1007/s10072-020-04917-1

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