Evidence map›Paper›PMID 34819144›Full record

ArticleActa neuropathologica communications2021

Assembly of α-synuclein and neurodegeneration in the central nervous system of heterozygous M83 mice following the peripheral administration of α-synuclein seeds.

Jennifer A Macdonald, John L Chen, Masami Masuda-Suzukake, Manuel Schweighauser, Zane Jaunmuktane, Thomas Warner, Janice L Holton, Annabelle Grossman, Richard Berks, Isabelle Lavenir and 1 more

Open access · goldAbstract read
In one paragraph

Article in Acta neuropathologica communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 13% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

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  9. Frontiers in molecular neuroscience · 2024
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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

11 authors at 4 institutions in 1 country.

Jennifer A Macdonald *MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK.
John L Chen *MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK.
Masami Masuda-SuzukakeMRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK.
Manuel SchweighauserMRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK.
Zane JaunmuktaneQueen Square Brain Bank for Neurological Disorders, UCL Institute of Neurology, 1 Wakefield Street, London, WC1N 1PJ, UK.
Thomas WarnerQueen Square Brain Bank for Neurological Disorders, UCL Institute of Neurology, 1 Wakefield Street, London, WC1N 1PJ, UK.
Janice L HoltonQueen Square Brain Bank for Neurological Disorders, UCL Institute of Neurology, 1 Wakefield Street, London, WC1N 1PJ, UK.
Annabelle GrossmanKymab, Babraham Research Campus, Cambridge, CB22 3AT, UK.
Richard BerksMRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK.
Isabelle LavenirMRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK.
Michel GoedertMRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK. mg@mrc-lmb.cam.ac.uk.
MRC Laboratory of Molecular Biology · GBUniversity College London · GBKymab (United Kingdom) · GBNational Hospital for Neurology and Neurosurgery · GB

Funding

Medical Research Council MC_U105184291Medical Research Council MC_U105184326
6 · The paper itself

Abstract

Peripheral administration (oral, intranasal, intraperitoneal, intravenous) of assembled A53T α-synuclein induced synucleinopathy in heterozygous mice transgenic for human mutant A53T α-synuclein (line M83). The same was the case when cerebellar extracts from a case of multiple system atrophy with type II α-synuclein filaments were administered intraperitoneally, intravenously or intramuscularly. We observed abundant immunoreactivity for pS129 α-synuclein in nerve cells and severe motor impairment, resulting in hindlimb paralysis and shortened lifespan. Filaments immunoreactive for pS129 α-synuclein were in evidence. A 70% loss of motor neurons was present five months after an intraperitoneal injection of assembled A53T α-synuclein or cerebellar extract with type II α-synuclein filaments from an individual with a neuropathologically confirmed diagnosis of multiple system atrophy. Microglial cells changed from a predominantly ramified to a dystrophic appearance. Taken together, these findings establish a close relationship between the formation of α-synuclein inclusions in nerve cells and neurodegeneration, accompanied by a shift in microglial cell morphology. Propagation of α-synuclein inclusions depended on the characteristics of both seeds and transgenically expressed protein.

Indexed as

Agedalpha-SynucleinAnimalsAnimals, Genetically ModifiedHindlimbHumansImmunohistochemistryMaleMiceMice, Neurologic MutantsMicrogliaMotor NeuronsMovement DisordersMultiple System AtrophyMutationNeurodegenerative Diseasesalpha-SynucleinSNCA protein, humanMicrogliaMultiple system atrophyNeurodegenerationSeeded assemblyα-Synuclein

Identifiers

PMID34819144
PMCPMC8611835
OpenAlexW3217479544

What OpenQuestion holds

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Registered trials

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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.