Evidence map›Paper›PMID 35027576›Full record

ArticleNPJ Parkinson's disease2022

Similar neuronal imprint and no cross-seeded fibrils in α-synuclein aggregates from MSA and Parkinson's disease.

Florent Laferrière, Stéphane Claverol, Erwan Bezard, Francesca De Giorgi, François Ichas

Open access · goldAbstract read
In one paragraph

Article in NPJ Parkinson's disease, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.4field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 35 citations in OpenAlex.

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  18. Article
  19. ⍺-Synuclein Structural Diversity and the Cellular Environment in ⍺-Synuclein Transmission Models and Humans.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Review
  20. Monitoring α-synuclein aggregation.Neurobiology of disease · 2023
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Florent LaferrièreCNRS, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France. florent.laferriere@u-bordeaux.fr.ORCID http://orcid.org/0000-0002-0753-5505
Stéphane ClaverolPlateforme Proteome, Univ. Bordeaux, Bordeaux, France.ORCID http://orcid.org/0000-0001-5315-2823
Erwan BezardCNRS, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France.ORCID http://orcid.org/0000-0002-0410-4638
Francesca De Giorgi *CNRS, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France.
François Ichas *CNRS, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France. francois.ichas@inserm.fr.ORCID http://orcid.org/0000-0001-8184-5248
Centre National de la Recherche Scientifique · FRUniversité de Bordeaux · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aggregated alpha-synuclein (α-syn) is a principal constituent of Lewy bodies (LBs) and glial cytoplasmic inclusions (GCIs) observed respectively inside neurons in Parkinson's disease (PD) and oligodendrocytes in multiple system atrophy (MSA). Yet, the cellular origin, the pathophysiological role, and the mechanism of formation of these inclusions bodies (IBs) remain to be elucidated. It has recently been proposed that α-syn IBs eventually cause the demise of the host cell by virtue of the cumulative sequestration of partner proteins and organelles. In particular, the hypothesis of a local cross-seeding of other fibrillization-prone proteins like tau or TDP-43 has also been put forward. We submitted sarkosyl-insoluble extracts of post-mortem brain tissue from PD, MSA and control subjects to a comparative proteomic analysis to address these points. Our studies indicate that: (i) α-syn is by far the most enriched protein in PD and MSA extracts compared to controls; (ii) PD and MSA extracts share a striking overlap of their sarkosyl-insoluble proteomes, consisting of a vast majority of mitochondrial and neuronal synaptic proteins, and (iii) other fibrillization-prone protein candidates possibly cross-seeded by α-syn are neither found in PD nor MSA extracts. Thus, our results (i) support the idea that pre-assembled building blocks originating in neurons serve to the formation of GCIs in MSA, (ii) show no sign of amyloid cross-seeding in either synucleinopathy, and (iii) point to the sequestration of mitochondria and of neuronal synaptic components in both LBs and GCIs.

Identifiers

PMID35027576
PMCPMC8758785
OpenAlexW4205144025

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.