ArticleInternational journal of molecular sciences2024
α-Synuclein Oligomers in Skin Biopsies Predict the Worsening of Cognitive Functions in Parkinson's Disease: A Single-Center Longitudinal Cohort Study.
Article in International journal of molecular sciences, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Characterizing Cutaneous α-Synuclein Deposition and Seeding Activity in Parkinson's Disease Subtypes.Annals of clinical and translational neurology · 2026Article
- Seeing Invisible Oligomers: Rethinking α-Synuclein Pathology Through Proximity Ligation Assay.Movement disorders : official journal of the Movement Disorder Society · 2026Review
- Exploring the skin as an open window onto neurodegenerative diseases.Translational neurodegeneration · 2025Review
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Authors and funding
12 authors.
Funding
Abstract
α-synuclein oligomers within synaptic terminals of autonomic fibers of the skin reliably discriminate Parkinson's disease (PD) patients from healthy controls. Nonetheless, the prognostic role of oligomers for disease progression is unknown. We explored whether α-synuclein oligomers evaluated as proximity ligation assay (PLA) score may predict the worsening of cognitive functions in patients with Parkinson's disease. Thirty-four patients with PD and thirty-four healthy controls (HC), matched 1:1 for age and sex, were enrolled. Patients with PD underwent baseline skin biopsy and an assessment of cognitive domains including Mini-Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), Clock Drawing Test, and Frontal Assessment Battery. At the last follow-up visit available, patients were either cognitively stable (PD-CS) or cognitively deteriorated (PD-CD). α-synuclein oligomers were quantified as PLA scores. Differences between groups were assessed, controlling for potential confounders. The relationship between skin biopsy measures and cognitive changes was explored using correlation and multivariable regression analyses. The discrimination power of the PLA score was assessed via ROC curve. To elucidate the relationship between skin biopsy and longitudinal cognitive measures, we conducted multivariable regression analyses using delta scores of cognitive tests (Δ) as dependent variables. We found that PD-CD had higher baseline PLA scores than PD-CS (
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