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Cognitive and cortical thinning patterns of subjective cognitive decline in patients with and without Parkinson's disease

Authors
 Jin Yong Hong  ;  Hyuk Jin Yun  ;  Mun Kyung Sunwoo  ;  Jee Hyun Ham  ;  Jong-Min Lee  ;  Young H. Sohn  ;  Phil Hyu Lee 
Citation
 Parkinsonism & Related Disorders, Vol.20(9) : 999-1003, 2014 
Journal Title
 Parkinsonism & Related Disorders 
ISSN
 1353-8020 
Issue Date
2014
Abstract
BACKGROUND: Subjective cognitive decline (SCD) has gained attention as a predictor of future cognitive decline in neurodegenerative diseases. Based on the hypothesis that different pathologies may distinctly contribute to SCD, we investigated the cognitive profiles and cortical thickness of patients with SCD, with and without Parkinson's disease (PD). METHODS: In total, 96 patients experiencing SCD were classified as having PD (SCD-PD(+), n = 49) or no neurological disease (SCD-PD(-), n = 47); cognitively normal subjects without SCD (n = 23) were included as controls. Neurocognitive profiles and cortical thickness were examined using standardized neuropsychological tests and magnetic resonance imaging-based analysis. RESULTS: No significant differences in demographic characteristics were found among the three groups. Neuropsychological tests demonstrated that the SCD-PD(+) patients had lower semantic fluency than SCD-PD(-) patients and controls, and showed poorer performance in visual memory and confrontational naming than controls, whereas no significant difference in cognitive performance was observed between the SCD-PD(-) patients and controls. Cortical thickness analysis revealed that the SCD-PD(+) patients had focal cortical thinning in the dorsolateral prefrontal, orbitofrontal, parietal, and parahippocampal areas compared with controls. Compared with SCD-PD(-) patients, SCD-PD(+) patients had cortical thinning in the frontal, parahippocampal, and posterior cortical areas. CONCLUSION: Our data show that cortical thinning and cognitive performance in patients with SCD may differ based on the presence of PD, suggesting that SCD in patients with PD reflects disease-related cortical thinning and cognitive dysfunctions more closely than SCD without PD.
Full Text
http://www.sciencedirect.com/science/article/pii/S1353802014002314
DOI
10.1016/j.parkreldis.2014.06.011
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Neurology (신경과학교실)
Yonsei Authors
선우문경(Sunwoo, Mun Kyung)
손영호(Sohn, Young Ho)
이필휴(Lee, Phil Hyu)
함지현(Ham, Jee Hyun)
홍진용(Hong, Jin Yong)
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/99547
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