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Fluid and Tissue Biomarkers in Parkinson's Disease: Immunodetection versus Seed Amplification Assays

This review examines advances in Parkinson's disease biomarkers, particularly α-synuclein detection using immunodetection and emerging seed amplification assays in cerebrospinal fluid and blood. Seed amplification assays show promise as more reliable diagnostic tools with improved accuracy, representing a significant advancement toward non-invasive biomarker testing for disease diagnosis and progression monitoring.

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Neuromelanin: Role in Parkinson's Disease Pathogenesis and Therapeutic Potential

This review examines neuromelanin's complex involvement in Parkinson's disease, highlighting its paradoxical neuroprotective properties as an antioxidant alongside its harmful effects through mitochondrial dysfunction and oxidative stress when accumulated. Emerging therapeutic strategies targeting neuromelanin accumulation include antioxidant therapy, proteostasis enhancement, ion chelation, and immunotherapy, though clinical trial results remain mixed.

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Blepharoclonus in Parkinsonism: Frequency and Diagnostic Utility

This prospective study assessed the prevalence of blepharoclonus (eyelid fluttering) in 75 Parkinson's disease patients and 10 with atypical parkinsonism, finding it present in 84% of PD cases and 60% of synucleinopathy cases but absent in non-synucleinopathy parkinsonian syndromes. The findings suggest blepharoclonus may have diagnostic utility in differentiating synucleinopathy-associated parkinsonism from other parkinsonian conditions.

StudiuParkinsonÎncredere înaltă21.06.2026

The RAB32 p.Ser71Arg Variant in Parkinsonisms: Insights from a Large Italian Cohort

A study of 4,600 Italian patients with Parkinson's disease or atypical parkinsonism identified 20 new carriers of the RAB32 p.Ser71Arg variant, which was associated with earlier disease onset (average 51 years) and good response to dopaminergic therapy. Carriers showed positive family history in 55.5% of cases, suggesting dominant inheritance patterns, with generally preserved cognitive function and mild psychiatric symptoms.