ArticleBMC medicine2024
Longitudinal decline in DAT binding in Parkinson's disease: connections with sleep disturbances.
Article in BMC medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Prevalence and clinical implications of Rapid eye movement sleep behavior disorder in Alzheimer's disease and Lewy body dementia.GeroScience · 2026Observational
- Relationship between excessive daytime sleepiness and motor subtype transition in untreated prodromal Parkinson's disease: a cohort study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026Article
- A review of neurophysiological relationships between sleep disorders and depression.Brain, behavior, & immunity - health · 2026Review
- Rapid frontotemporal gray matter loss in proposed body-first Parkinson's disease: a longitudinal voxel-based morphometry study.Frontiers in neurology · 2025Article
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Authors and funding
15 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe nigrostriatal dopamine (DA) system plays a critical role in regulating the sleep-wake state. The relationship between baseline striatal DA transporter (DAT) specific binding ratios (SBR) and rapid eye movement sleep behavior disorder (RBD) has been established. This study aimed to investigate the association between the progression of striatal DA dysfunction and sleep disturbances, including excessive daytime sleepiness (EDS) and probable RBD (pRBD), in patients with Parkinson's disease (PD).
methodsData were obtained from the Parkinson's Progression Markers Initiative (PPMI). Six hundred twenty-one newly diagnosed PD patients and followed up for 4 years were included in this longitudinal study. EDS and pRBD were defined using the Epworth Sleepiness Scale (ESS) and RBD Screening Questionnaire (RBDSQ). Striatal DAT SBR was evaluated by [
resultsUsing a linear mixed-effects model across all contemporaneous data points, we found a negative correlation between striatal DAT SBR and sleep disturbances (EDS/pRBD). The interaction between striatal DAT SBR and year was specific to RBDSQ score (β = - 0.102, 95% CI: - 0.187 to - 0.017, p = 0.019), with no evidence of a similar interaction for ESS score. Additionally, the association between the alpha-synuclein gene (SNCA) and sleep disturbances was mediated by the SBR (ESS score: total effect = - 2.717, p = 0.022; direct effect = - 3.222, p = 0.007; indirect effect = 0.505, p < 0.05; RBDSQ score: total effect = 1.402, p = 0.026; direct effect = 1.209, p = 0.057; indirect effect = 0.193, p < 0.05).
conclusionsOur findings support the role of striatal DA dysfunction in sleep disturbances in early PD patients. Furthermore, we demonstrated that genetic variations in causative genes of PD contribute to the development of sleep disturbances. Striatal DAT imaging may be a useful risk indicator for sleep disturbances, providing early intervention strategies.
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