Evidence map›Paper›PMID 25044276›Full record

ArticleProtein science : a publication of the Protein Society2014

Dopamine-induced α-synuclein oligomers show self- and cross-propagation properties.

Matthew S Planchard, Sarah E Exley, Sarah E Morgan, Vijayaraghavan Rangachari

Open access · bronzeAbstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.0field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
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  14. Manganese-induced Neurotoxicity: FromToxicology research · 2015
    Article
  15. Article
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  17. 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

4 authors at 1 institution in 1 country.

Matthew S PlanchardDepartment of Chemistry and Biochemistry, University of Southern Mississippi, Hattiesburg, Mississippi, 39406.
Sarah E Exley
Sarah E Morgan
Vijayaraghavan Rangachari
University of Southern Mississippi · US

Funding

Training and Mentoring Core P20GM103476 · NIGMS · UNIVERSITY OF SOUTHERN MISSISSIPPI · PI Vijay Rangachari · 2012 to 2026
$60.2M
TOUGALOO PROTEOMICSP20RR016476 · NCRR · UNIVERSITY OF SOUTHERN MISSISSIPPI · PI KRAMER, WOLFGANG · 2001 to 2011
$30.4M
NCRR NIH HHS 5P20RR016476-11NCRR NIH HHS P20 RR016476NIGMS NIH HHS 8 P20 GM103476-11NIGMS NIH HHS P20 GM103476
6 · The paper itself

Abstract

Amyloid aggregates of α-synuclein (αS) protein are the predominant species present within the intracellular inclusions called Lewy bodies in Parkinson's disease (PD) patients. Among various aggregates, the low-molecular weight ones broadly ranging between 2 and 30 mers are known to be the primary neurotoxic agents responsible for the impairment of neuronal function. Recent research has indicated that the neurotransmitter dopamine (DA) is one of the key physiological agents promoting and augmenting αS aggregation, which is thought to be a significant event in PD pathologenesis. Specifically, DA is known to induce the formation of soluble oligomers of αS, which in turn are responsible for inducing several important cellular changes leading to cellular toxicity. In this report, we present the generation, isolation, and biophysical characterization of five different dopamine-derived αS oligomers (DSOs) ranging between 3 and 15 mers, corroborating previously published reports. More importantly, we establish that these DSOs are also capable of replication by self-propagation, which leads to the replication of DSOs upon interaction with αS monomers, a process similar to that observed in mammilian prions. In addition, DSOs are also able to cross-propagate amyloid-β (Aβ) aggregates involved in Alzheimer's disease (AD). Interestingly, while self-propagation of DSOs occur with no net gain in protein structure, cross-propagation proceeds with an overall gain in β-sheet conformation. These results implicate the involvement of DSOs in the progression of PD, and, in part, provide a molecular basis for the observed co-existence of AD-like pathology among PD patients.

Indexed as

alpha-SynucleinAmyloid beta-PeptidesCircular DichroismDopamineHumansModels, MolecularPrionsProtein Structure, Secondaryalpha-SynucleinAmyloid beta-PeptidesDopaminePrionsamyloidoligomersParkinson'sprionpropagationα-synuclein

Identifiers

PMID25044276
PMCPMC4286998
OpenAlexW1518580338

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.