ArticleTranslational neurodegeneration2019
Efficient RT-QuIC seeding activity for α-synuclein in olfactory mucosa samples of patients with Parkinson's disease and multiple system atrophy.
Article in Translational neurodegeneration, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 121 papers, 3 of them syntheses that pooled it.
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Who cites it
121 citing papers in PubMed, 3 syntheses or guidelines pooled it, 185 citations in OpenAlex.
- Diagnostic biomarkers for α-synucleinopathies- state of the art and future developments: a systematic review.Molecular neurodegeneration · 2025Pooled it
- Skin α-synuclein assays in diagnosing Parkinson's disease: a systematic review and meta-analysis.Journal of neurology · 2025Pooled it
- Alpha-Synuclein Strain Variability in Body-First and Brain-First Synucleinopathies.Frontiers in aging neuroscience · 2022Pooled it
- From a prion seed to a tree of discoveries: Byron Caughey's RT-QuIC legacy in protein misfolding research.Acta neuropathologica · 2026Review
- In vivo detection of pathologic α- synuclein and TDP-43 in the skin and olfactory mucosa of a patient with Parkinson's disease-like phenotype carrying the p.Thr272Serfs*10 GRN mutation.Molecular neurodegeneration · 2026Article
- A Systematic Comparison of Alpha-Synuclein Seed Amplification Assays for Increasing Reproducibility.Annals of clinical and translational neurology · 2026Review
- From phenotype to biology: a multi-modal roadmap of biofluid, tissue, imaging, and digital biomarkers in Parkinson's disease.Translational neurodegeneration · 2026Review
- Age-dependent peripheral dissemination of α-synuclein seeds: mechanistic basis for blood-based early detection of Parkinson's disease.Acta neuropathologica communications · 2026Article
- Molecular profiling of alpha-synuclein pathology and seeding activity in Parkinson's disease.Acta neuropathologica · 2026Article
- Seed Amplification Assays for Parkinson's Disease: A Review of α-Synuclein Assays in Body Fluids and Tissues.Journal of neurochemistry · 2026Review
- Features of Cross-Seeding of Wild-Type Alpha-Synuclein and Its Mutant Form A53T Potentially Useful for the Development of Test Systems.Life (Basel, Switzerland) · 2026Article
- Tear fluid as a novel specimen for detection of alpha-synuclein seeding activity in Parkinson's disease.Scientific reports · 2026Article
- Collaborative action for biomarker breakthroughs: Validating α-synuclein seed amplification assays in Parkinson's disease.Journal of Parkinson's disease · 2026Review
- Regional homogeneity differences in resting-state fMRI between Parkinson's disease and multiple system atrophy-parkinsonian type.Journal of neural transmission (Vienna, Austria : 1996) · 2026Article
- Prions and protein aggregates as pathogens, self-propagating structures, biomarkers, and therapeutic targets.Microbiology and molecular biology reviews : MMBR · 2025Review
- Seed amplification of MSA alpha-synuclein aggregates preserves the biological and structural properties of brain-derived aggregates.Nature communications · 2025Article
- Detection of TDP-43 seeds in CSF of presymptomatic and symptomatic genetic FTD/ALS.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025Article
- Quantitative measurements of α-synuclein seeds in CSF inform diagnosis of synucleinopathies.Journal of Parkinson's disease · 2025Article
- Biomarkers for Lewy body diseases and other alpha-synucleinopathies in biofluids: current evidence and future directions.Journal of translational medicine · 2025Review
- α-Synuclein purification significantly impacts seed amplification assay performance and consistency.Acta neuropathologica communications · 2025Article
61 more citing papers are in PubMed but not listed here.
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19 authors at 3 institutions in 1 country.
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Abstract
backgroundParkinson's disease (PD) is a neurodegenerative disorder whose diagnosis is often challenging because symptoms may overlap with neurodegenerative parkinsonisms. PD is characterized by intraneuronal accumulation of abnormal α-synuclein in brainstem while neurodegenerative parkinsonisms might be associated with accumulation of either α-synuclein, as in the case of Multiple System Atrophy (MSA) or tau, as in the case of Corticobasal Degeneration (CBD) and Progressive Supranuclear Palsy (PSP), in other disease-specific brain regions. Definite diagnosis of all these diseases can be formulated only neuropathologically by detection and localization of α-synuclein or tau aggregates in the brain. Compelling evidence suggests that trace-amount of these proteins can appear in peripheral tissues, including receptor neurons of the olfactory mucosa (OM).
methodsWe have set and standardized the experimental conditions to extend the ultrasensitive Real Time Quaking Induced Conversion (RT-QuIC) assay for OM analysis. In particular, by using human recombinant α-synuclein as substrate of reaction, we have assessed the ability of OM collected from patients with clinical diagnoses of PD and MSA to induce α-synuclein aggregation, and compared their seeding ability to that of OM samples collected from patients with clinical diagnoses of CBD and PSP.
resultsOur results showed that a significant percentage of MSA and PD samples induced α-synuclein aggregation with high efficiency, but also few samples of patients with the clinical diagnosis of CBD and PSP caused the same effect. Notably, the final RT-QuIC aggregates obtained from MSA and PD samples owned peculiar biochemical and morphological features potentially enabling their discrimination.
conclusionsOur study provide the proof-of-concept that olfactory mucosa samples collected from patients with PD and MSA possess important seeding activities for α-synuclein. Additional studies are required for (i) estimating sensitivity and specificity of the technique and for (ii) evaluating its application for the diagnosis of PD and neurodegenerative parkinsonisms. RT-QuIC analyses of OM and cerebrospinal fluid (CSF) can be combined with the aim of increasing the overall diagnostic accuracy of these diseases, especially in the early stages.
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