What mechanisms cause α-synuclein seeding activity to decrease with longer PD disease duration?

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Description

The study shows a counterintuitive negative association between disease duration and α-synuclein seeding activity in blood, with activity decreasing over time. This contradicts expectations that pathological protein accumulation would increase with disease progression and requires mechanistic explanation.

Gap type: unexplained_observation Source paper: Association of Misfolded α-Synuclein Derived from Neuronal Exosomes in Blood with Parkinson’s Disease Diagnosis and Duration. (2024, Journal of Parkinson’s disease, PMID:38669557)

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