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Nigrostriatal dopamine-independent resting-state functional networks in Parkinson's disease

Authors
 Jee Hyun Ham  ;  Jungho Cha  ;  Jae Jung Lee  ;  Gwang-Min Baek  ;  Mun Kyung Sunwoo  ;  Jin Yong Hong  ;  Na-Young Shin  ;  Young Ho Sohn  ;  Jong-Min Lee  ;  Phil Hyu Lee 
Citation
 Neuroimage, Vol.119 : 296-304, 2015 
Journal Title
 Neuroimage 
ISSN
 1053-8119 
Issue Date
2015
Abstract
As an indicator of synchronous neural activity, resting-state functional networks are influenced by neuropathological and neurochemical changes in degenerative diseases. To further advance understanding about neurochemical and neuropathological basis for resting-state functional maps, we performed a comparative analysis of resting-state functional connectivity in patients with Parkinson's disease (PD) and drug induced parkinsonism (DIP). Resting-state neuroimaging data were analyzed with a seed-based approach to investigate striatocortical functional connectivity and cortical functional connectivity within the default mode network, executive control network, and the dorsal attention network. The striatal subregions were divided into the more or less affected sides in terms of dopamine transporter uptake. Compared with DIP, PD exhibited an increased cerebellar connectivity from the more affected side of the caudate and the less affected sides of the anterior and the posterior putamen. Additionally, PD showed increased functional connectivity in the anterior prefrontal areas from the more affected side of the anterior putamen and from the less affected side of the posterior putamen. However, PD exhibited decreased cortical functional connectivity from the posterior cingulate cortex in the left temporal area. Finally, DIP patients showed decreased cortical functional connectivity from the dorsolateral prefrontal cortex in frontal and parietal areas compared with PD patients. In summary, the present study demonstrates that PD patients exhibited a unique resting state functional connectivity that may be associated with PD-related pathological changes beyond the dopaminergic system, whereas DIP patients showed altered functional connectivity within executive control network.
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/141643
DOI
10.1016/j.neuroimage.2015.06.077
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Neurology (신경과학교실)
Yonsei Authors
손영호(Sohn, Young Ho) ; 이재정(Lee, Jae Jung) ; 이필휴(Lee, Phil Hyu) ; 함지현(Ham, Jee Hyun) ; 홍진용(Hong, Jin Yong)
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Full Text
http://www.sciencedirect.com/science/article/pii/S1053811915005820
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