Evidence map›Paper›PMID 25273557›Full record

ArticleMolecular biology of the cell2014

Acute increase of α-synuclein inhibits synaptic vesicle recycling evoked during intense stimulation.

David J Busch, Paul A Oliphint, Rylie B Walsh, Susan M L Banks, Wendy S Woods, Julia M George, Jennifer R Morgan

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed
3.4field-weighted citation impact, top 8% 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

69 citing papers in PubMed, 99 citations in OpenAlex.

  1. Article
  2. Review
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  6. Parkinson disease is a fatty acidopathy.Nature reviews. Neurology · 2025
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  14. Review
  15. Altered Protein Palmitoylation as Disease Mechanism in Neurodegenerative Disorders.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Review
  16. Article
  17. Novel gene signatures predicting and immune infiltration analysis in Parkinson's disease: based on combining random forest with artificial neural network.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
    Article
  18. Review
  19. Article
  20. Article

9 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

7 authors at 3 institutions in 2 countries.

David J BuschSection of Molecular Cell and Developmental Biology, Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712.
Paul A OliphintSection of Molecular Cell and Developmental Biology, Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712.
Rylie B WalshEugene Bell Center for Regenerative Biology and Tissue Engineering, Marine Biological Laboratory, Woods Hole, MA 02543.
Susan M L BanksEugene Bell Center for Regenerative Biology and Tissue Engineering, Marine Biological Laboratory, Woods Hole, MA 02543.
Wendy S WoodsDepartment of Cell and Developmental Biology, University of Illinois, Urbana, IL 61801.
Julia M GeorgeDepartment of Cell and Developmental Biology, University of Illinois, Urbana, IL 61801 Department of Biological and Experimental Psychology, School of Biological and Chemical Sciences, Queen Mary University of London, London E1 4NS, United Kingdom.
Jennifer R MorganEugene Bell Center for Regenerative Biology and Tissue Engineering, Marine Biological Laboratory, Woods Hole, MA 02543 jmorgan@mbl.edu.
Marine Biological Laboratory · USThe University of Texas at Austin · USUniversity of Illinois Urbana-Champaign · US

Funding

Mechanisms of Synaptic Dysfunction in Parkinson s and Other Synuclein-Linked DiseasesR01NS078165 · NINDS · UNIVERSITY OF TEXAS AT AUSTIN · PI Jennifer Rebecca Morgan · 2012 to 2026
$5.5M
NINDS NIH HHS R01 NS078165
6 · The paper itself

Abstract

Parkinson's disease is associated with multiplication of the α-synuclein gene and abnormal accumulation of the protein. In animal models, α-synuclein overexpression broadly impairs synaptic vesicle trafficking. However, the exact steps of the vesicle trafficking pathway affected by excess α-synuclein and the underlying molecular mechanisms remain unknown. Therefore we acutely increased synuclein levels at a vertebrate synapse and performed a detailed ultrastructural analysis of the effects on presynaptic membranes. At stimulated synapses (20 Hz), excess synuclein caused a loss of synaptic vesicles and an expansion of the plasma membrane, indicating an impairment of vesicle recycling. The N-terminal domain (NTD) of synuclein, which folds into an α-helix, was sufficient to reproduce these effects. In contrast, α-synuclein mutants with a disrupted N-terminal α-helix (T6K and A30P) had little effect under identical conditions. Further supporting this model, another α-synuclein mutant (A53T) with a properly folded NTD phenocopied the synaptic vesicle recycling defects observed with wild type. Interestingly, the vesicle recycling defects were not observed when the stimulation frequency was reduced (5 Hz). Thus excess α-synuclein impairs synaptic vesicle recycling evoked during intense stimulation via a mechanism that requires a properly folded N-terminal α-helix.

Indexed as

Action Potentialsalpha-SynucleinAmino Acid SequenceAnimalsAxonsCell MembraneElectric StimulationEndocytosisFish ProteinsImmunoblottingLampreysMicroscopy, ConfocalMicroscopy, ElectronMolecular Sequence DataMutationProtein Structure, Secondaryalpha-SynucleinFish Proteins

Identifiers

PMID25273557
PMCPMC4244201
OpenAlexW2170576564

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.