Frontiers in Aging Neuroscience
Plasma α-synuclein and QSM-derived susceptibility in Parkinson’s disease: associations with clinical features
Background The pathological interplay between α-synuclein aggregation and iron dysregulation is central to the neurodegenerative process in Parkinson’s disease (PD). Quantitative susceptibility mapping (QSM) allows in vivo assessment of regional brain iron burden, and blood assays enable measurement of plasma α-synuclein; however, their clinical relevance and mutual relationship remain insufficiently defined. Objective To evaluate plasma α-synuclein as a diagnostic biomarker (against controls) and to explore whethe …