Journal of Movement Disorders

Review Article

Subjective Cognitive Complaints in Cognitively Normal Patients With Parkinson’s Disease: A Systematic Review: Jin Yong Hong, Phil Hyu Lee; J Mov Disord. 2023;16(1):1-12. Published online November 10, 2022; DOI: https://doi.org/10.14802/jmd.22059

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Subjective cognitive complaints (SCCs) refer to self-perceived cognitive decline and are related to objective cognitive decline. SCCs in cognitively normal individuals are considered a preclinical sign of subsequent cognitive impairment due to Alzheimer’s disease, and SCCs in cognitively normal patients with Parkinson’s disease (PD) are also gaining attention. The aim of this review was to provide an overview of the current research on SCCs in cognitively normal patients with PD. A systematic search found a lack of consistency in the methodologies used to define and measure SCCs. Although the association between SCCs and objective cognitive performance in cognitively normal patients with PD is controversial, SCCs appear to be predictive of subsequent cognitive decline. These findings support the clinical value of SCCs in cognitively normal status in PD; however, further convincing evidence from biomarker studies is needed to provide a pathophysiological basis for these findings. Additionally, a consensus on the definition and assessment of SCCs is needed for further investigations.

Citations

Citations to this article as recorded by

Subjective Cognitive Complaints in Parkinson's Disease: A Systematic Review and Meta‐Analysis
Mattia Siciliano, Alessandro Tessitore, Francesca Morgante, Jennifer G. Goldman, Lucia Ricciardi
Movement Disorders.2024; 39(1): 17. CrossRef
Mild cognitive impairment in Parkinson's disease: current view
Kurt A. Jellinger
Frontiers in Cognition.2024;[Epub] CrossRef
Association of Neuropsychiatric Symptom Profiles With Cognitive Decline in Patients With Parkinson Disease and Mild Cognitive Impairment
Young-gun Lee, Mincheol Park, Seong Ho Jeong, Kyoungwon Baik, Sungwoo Kang, So Hoon Yoon, Han Kyu Na, Young H. Sohn, Phil Hyu Lee
Neurology.2023;[Epub] CrossRef
Subjective cognitive complaints in patients with progressive supranuclear palsy
Jun Seok Lee, Jong Hyeon Ahn, Jong Mok Ha, Jinyoung Youn, Jin Whan Cho
Frontiers in Neurology.2023;[Epub] CrossRef
Daily Emotional Experiences in Persons with Parkinson Disease: Relations to Subjective Cognitive Complaints and Quality of Life
Karen R. Hebert, Mackenzie Feldhacker
Physical & Occupational Therapy In Geriatrics.2023; : 1. CrossRef
Pathobiology of Cognitive Impairment in Parkinson Disease: Challenges and Outlooks
Kurt A. Jellinger
International Journal of Molecular Sciences.2023; 25(1): 498. CrossRef

Original Article

Potential Link Between Cognition and Motor Reserve in Patients With Parkinson’s Disease: Seok Jong Chung, Yae Ji Kim, Yun Joong Kim, Hye Sun Lee, Mijin Yun, Phil Hyu Lee, Yong Jeong, Young H. Sohn; J Mov Disord. 2022;15(3):249-257. Published online September 7, 2022; DOI: https://doi.org/10.14802/jmd.22063

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149 Download
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Abstract PDF Supplementary Material

Objective
To investigate whether there is a link between cognitive function and motor reserve (i.e., individual capacity to cope with nigrostriatal dopamine depletion) in patients with newly diagnosed Parkinson’s disease (PD).
Methods
A total of 163 patients with drug-naïve PD who underwent ¹⁸F-FP-CIT PET, brain MRI, and a detailed neuropsychological test were enrolled. We estimated individual motor reserve based on initial motor deficits and striatal dopamine depletion using a residual model. We performed correlation analyses between motor reserve estimates and cognitive composite scores. Diffusion connectometry analysis was performed to map the white matter fiber tracts, of which fractional anisotropy (FA) values were well correlated with motor reserve estimates. Additionally, Cox regression analysis was used to assess the effect of initial motor reserve on the risk of dementia conversion.
Results
The motor reserve estimate was positively correlated with the composite score of the verbal memory function domain (γ = 0.246) and with the years of education (γ = 0.251). Connectometry analysis showed that FA values in the left fornix were positively correlated with the motor reserve estimate, while no fiber tracts were negatively correlated with the motor reserve estimate. Cox regression analysis demonstrated that higher motor reserve estimates tended to be associated with a lower risk of dementia conversion (hazard ratio, 0.781; 95% confidence interval, 0.576–1.058).
Conclusion
The present study demonstrated that the motor reserve estimate was well correlated with verbal memory function and with white matter integrity in the left fornix, suggesting a possible link between cognition and motor reserve in patients with PD.

Citations

Citations to this article as recorded by

Hippocampal Perfusion Affects Motor and Cognitive Functions in Parkinson Disease: An Early Phase 18F‐FP‐CIT Positron Emission Tomography Study
Min Young Chun, Seok Jong Chung, Su Hong Kim, Chan Wook Park, Seong Ho Jeong, Hye Sun Lee, Phil Hyu Lee, Young H. Sohn, Yong Jeong, Yun Joong Kim
Annals of Neurology.2024; 95(2): 388. CrossRef
Imaging Procedure and Clinical Studies of [18F]FP-CIT PET
Changhwan Sung, Seung Jun Oh, Jae Seung Kim
Nuclear Medicine and Molecular Imaging.2024;[Epub] CrossRef
Extra-Basal Ganglia Brain Structures Are Related to Motor Reserve in Parkinson’s Disease
Jinyoung Youn, Ji Hye Won, Mansu Kim, Junmo Kwon, Seung Hwan Moon, Minkyeong Kim, Jong Hyun Ahn, Jun Kyu Mun, Hyunjin Park, Jin Whan Cho
Journal of Parkinson's Disease.2023; 13(1): 39. CrossRef

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