Evidence map›Paper›PMID 32428221›Full record

ArticleBrain : a journal of neurology2020

Reduced oligodendrocyte exosome secretion in multiple system atrophy involves SNARE dysfunction.

Zhenwei Yu, Min Shi, Tessandra Stewart, Pierre-Olivier Fernagut, Yang Huang, Chen Tian, Benjamin Dehay, Anzari Atik, Dishun Yang, Francesca De Giorgi and 8 more

Open access · bronzeAbstract read
In one paragraph

Article in Brain : a journal of neurology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 3 pooled it
5.3field-weighted citation impact, top 3% 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

71 citing papers in PubMed, 3 syntheses or guidelines pooled it, 106 citations in OpenAlex.

  1. Pooled it
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  4. Multiple system atrophy: cure and care.Journal of neural transmission (Vienna, Austria : 1996) · 2026
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  18. [Recent advances on the role of exosomes in neurodegenerative diseases].Se pu = Chinese journal of chromatography · 2025
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11 more citing papers are in PubMed but not listed here.

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

18 authors at 6 institutions in 6 countries.

Zhenwei YuBeijing Neurosurgical Institute, Capital Medical University, Beijing 100050, China.
Min ShiDepartment of Pathology, University of Washington School of Medicine, 325 9th Ave, HMC Box 359635, Seattle, WA 98104, USA.
Tessandra StewartDepartment of Pathology, University of Washington School of Medicine, 325 9th Ave, HMC Box 359635, Seattle, WA 98104, USA.
Pierre-Olivier FernagutUniversité de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, F-33000 Bordeaux, France.
Yang HuangDepartment of Pathology, Peking University Health Science Centre and Third Hospital, Beijing, China.
Chen TianDepartment of Pathology, University of Washington School of Medicine, 325 9th Ave, HMC Box 359635, Seattle, WA 98104, USA.
Benjamin DehayUniversité de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, F-33000 Bordeaux, France.
Anzari AtikDepartment of Pathology, University of Washington School of Medicine, 325 9th Ave, HMC Box 359635, Seattle, WA 98104, USA.
Dishun YangDepartment of Pathology, University of Washington School of Medicine, 325 9th Ave, HMC Box 359635, Seattle, WA 98104, USA.
Francesca De GiorgiUniversité de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, F-33000 Bordeaux, France.
François IchasUniversité de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, F-33000 Bordeaux, France.
Marie-Hélène CanronUniversité de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, F-33000 Bordeaux, France.
Roberto CeravoloDepartment of Clinical and Experimental Medicine, University of Pisa, Via Roma 67, 56126, Pisa, Italy.
Daniela FrosiniDepartment of Clinical and Experimental Medicine, University of Pisa, Via Roma 67, 56126, Pisa, Italy.
Han-Joon KimDepartment of Neurology and Movement Disorder Center, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
Tao FengBeijing Tiantan Hospital, Capital Medical University, Beijing 100050, China.
Wassilios G MeissnerUniversité de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, F-33000 Bordeaux, France.
Jing ZhangDepartment of Pathology, University of Washington School of Medicine, 325 9th Ave, HMC Box 359635, Seattle, WA 98104, USA.
Centre National de la Recherche Scientifique · FRUniversity of Washington · USCapital Medical University · CNUniversity of Pisa · ITPeking University · CNSeoul National University Hospital · KR

Funding

Large Scale Biomarker Discovery and Validation for Parkinsons DiseaseU01NS082137 · NINDS · UNIVERSITY OF WASHINGTON · PI ZHANG, JING · 2012 to 2016
$6.0M
Peptide Biomarkers for Alzheimer DiseaseR01AG056711 · NIA · UNIVERSITY OF WASHINGTON · PI SHI, MIN · 2017 to 2021
$4.1M
MicroRNAs in CNS-derived extracellular microvesicles as peripheral blood biomarkers for Alzheimer diseaseR01AG061383 · NIA · UNIVERSITY OF WASHINGTON · PI SHI, MIN · 2019 to 2023
$3.4M
Peptide Biomarkers for Parkinson DiseaseU01NS091272 · NINDS · UNIVERSITY OF WASHINGTON · PI SHI, MIN · 2016 to 2020
$2.1M
Targeted drug delivery via CNS cell specific exosomes in neurodegenerative diseasesR21AG060142 · NIA · UNIVERSITY OF WASHINGTON · PI SHI, MIN · 2019 to 2020
$428k
Exploring microvesicular transport across the blood-brain barrier as a novel a-synuclein clearance mechanism and source of Parkinson's disease biomarkersR21NS104511 · NINDS · UNIVERSITY OF WASHINGTON · PI SHI, MIN · 2018 to 2019
$428k
NIA NIH HHS R01 AG056711NIA NIH HHS R01 AG061383NIA NIH HHS R21 AG060142NINDS NIH HHS R21 NS104511NINDS NIH HHS U01 NS082137NINDS NIH HHS U01 NS091272
6 · The paper itself

Abstract

Transportation of key proteins via extracellular vesicles has been recently implicated in various neurodegenerative disorders, including Parkinson's disease, as a new mechanism of disease spreading and a new source of biomarkers. Extracellular vesicles likely to be derived from the brain can be isolated from peripheral blood and have been reported to contain higher levels of α-synuclein (α-syn) in Parkinson's disease patients. However, very little is known about extracellular vesicles in multiple system atrophy, a disease that, like Parkinson's disease, involves pathological α-syn aggregation, though the process is centred around oligodendrocytes in multiple system atrophy. In this study, a novel immunocapture technology was developed to isolate blood CNPase-positive, oligodendrocyte-derived enriched microvesicles (OEMVs), followed by fluorescent nanoparticle tracking analysis and assessment of α-syn levels contained within the OEMVs. The results demonstrated that the concentrations of OEMVs were significantly lower in multiple system atrophy patients, compared to Parkinson's disease patients and healthy control subjects. It is also noted that the population of OEMVs involved was mainly in the size range closer to that of exosomes, and that the average α-syn concentrations (per vesicle) contained in these OEMVs were not significantly different among the three groups. The phenomenon of reduced OEMVs was again observed in a transgenic mouse model of multiple system atrophy and in primary oligodendrocyte cultures, and the mechanism involved was likely related, at least in part, to an α-syn-mediated interference in the interaction between syntaxin 4 and VAMP2, leading to the dysfunction of the SNARE complex. These results suggest that reduced OEMVs could be an important mechanism related to pathological α-syn aggregation in oligodendrocytes, and the OEMVs found in peripheral blood could be further explored for their potential as multiple system atrophy biomarkers.

Indexed as

Agedalpha-SynucleinAnimalsBodily SecretionsBrainCell-Derived MicroparticlesDisease Models, AnimalExosomesFemaleHumansMaleMiceMice, TransgenicMiddle AgedMultiple System AtrophyNeuronsalpha-SynucleinSNARE Proteinsexosomemultiple system atrophyoligodendrocyte-derived enriched microvesicleSNARE complexα-synuclein

Identifiers

PMID32428221
PMCPMC7296853
OpenAlexW3028029678

What OpenQuestion holds

Textmetadata
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.