Evidence map›Paper›PMID 38272865›Full record

ArticleCell death discovery2024

Glial senescence enhances α-synuclein pathology owing to its insufficient clearance caused by autophagy dysfunction.

Bin Hong, Yosuke Ohtake, Takahide Itokazu, Toshihide Yamashita

Open access · goldAbstract read
In one paragraph

Article in Cell death discovery, 2024. 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
10.7field-weighted citation impact, top 1% 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, 29 citations in OpenAlex.

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  16. A hypothesis explaining Alzheimer's disease, Parkinson's disease, and dementia with Lewy bodies overlap.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
  17. Review
  18. Aging, cellular senescence and Parkinson's disease.Journal of Parkinson's disease · 2025
    Review
  19. Article
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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

4 authors at 1 institution in 1 country.

Bin HongDepartment of Molecular Neuroscience, Graduate School of Medicine, Osaka University, Suita, Japan.
Yosuke OhtakeDepartment of Molecular Neuroscience, Graduate School of Medicine, Osaka University, Suita, Japan.
Takahide ItokazuDepartment of Molecular Neuroscience, Graduate School of Medicine, Osaka University, Suita, Japan. t.itokazu@molneu.med.osaka-u.ac.jp.ORCID http://orcid.org/0000-0003-2977-7190
Toshihide YamashitaDepartment of Molecular Neuroscience, Graduate School of Medicine, Osaka University, Suita, Japan. yamashita@molneu.med.osaka-u.ac.jp.ORCID http://orcid.org/0000-0003-4559-7018
The University of Osaka · JP

Funding

Japan Agency for Medical Research and Development (AMED) 23gm1210005h0006MEXT | Japan Society for the Promotion of Science (JSPS) 21H05049
6 · The paper itself

Abstract

Parkinson's disease (PD) is characterized by the pathological accumulation of α-synuclein (α-syn) and loss of dopaminergic neurons in the substantia nigra. Aging is a significant risk factor for PD. The accumulation of senescent glial cells in the aged brain contributes to PD progression by inducing chronic neuroinflammatory processes. However, although the insufficient degradation of α-syn aggregates results in PD deterioration, the possible alteration in the ability of α-syn clearance in senescent glia has received little attention. In this study, we investigated how aging and glial senescence affect the capacity of α-syn clearance. We found that following the intra-striatal injection of human α-syn (hu-α-syn) preformed fibril, hu-α-syn pathology persisted more in aged mice compared with younger mice and that aged microglia exhibited greater accumulation of hu-α-syn than younger microglia. Moreover, in vitro assay revealed that the clearance of hu-α-syn was primarily dependent on the autophagy-lysosome system rather than on the ubiquitin-proteasome system and that the capacity of hu-α-syn clearance was diminished in senescent glia because of autophagy-lysosome system dysfunction. Overall, this study provides new insights into the role of senescent glia in PD pathogenesis.

Identifiers

PMID38272865
PMCPMC10811334
OpenAlexW4391260882

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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.