Evidence map›Paper›PMID 32183378›Full record

ArticleInternational journal of molecular sciences2020

The Aggregation Conditions Define Whether EGCG is an Inhibitor or Enhancer of

Rebecca Sternke-Hoffmann, Alessia Peduzzo, Najoua Bolakhrif, Rainer Haas, Alexander K Buell

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.3field-weighted citation impact, top 9% 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

23 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
  2. The amplification of α-synuclein amyloid fibrils.Biochemical Society transactions · 2026
    Review
  3. Article
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  6. Article
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  8. Article
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  10. Bioactive Compounds and Their Influence on Postnatal Neurogenesis.International journal of molecular sciences · 2023
    Review
  11. Natural Inhibitors of Amyloid Aggregation.International journal of molecular sciences · 2023
    Article
  12. Review
  13. Review
  14. Article
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  17. 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

5 authors at 1 institution in 2 countries.

Rebecca Sternke-HoffmannInstitute of Physical Biology, Heinrich-Heine-University, 40225 Düsseldorf, Germany.
Alessia PeduzzoInstitute of Physical Biology, Heinrich-Heine-University, 40225 Düsseldorf, Germany.
Najoua BolakhrifInstitute of Physical Biology, Heinrich-Heine-University, 40225 Düsseldorf, Germany.
Rainer HaasDepartment of Hematology, Oncology and Clinical Immunology, Heinrich-Heine-University,40225 Düsseldorf, Germany.
Alexander K BuellInstitute of Physical Biology, Heinrich-Heine-University, 40225 Düsseldorf, Germany.ORCID 0000-0003-1161-3622
Heinrich Heine University Düsseldorf · DE

Funding

Jürgen Manchot Stiftung n/aNovo Nordisk Fonden NNFSA170028392
6 · The paper itself

Abstract

The amyloid fibril formation by α -synuclein is a hallmark of various neurodegenerative disorders, most notably Parkinson's disease. Epigallocatechin gallate (EGCG) has been reported to be an efficient inhibitor of amyloid formation by numerous proteins, among them α -synuclein. Here, we show that this applies only to a small region of the relevant parameter space, in particular to solution conditions where EGCG readily oxidizes, and we find that the oxidation product is a much more potent inhibitor compared to the unmodified EGCG. In addition to its inhibitory effects, EGCG and its oxidation products can under some conditions even accelerate α -synuclein amyloid fibril formation through facilitating its heterogeneous primary nucleation. Furthermore, we show through quantitative seeding experiments that, contrary to previous reports, EGCG is not able to re-model α -synuclein amyloid fibrils into seeding-incompetent structures. Taken together, our results paint a complex picture of EGCG as a compound that can under some conditions inhibit the amyloid fibril formation of α -synuclein, but the inhibitory action is not robust against various physiologically relevant changes in experimental conditions. Our results are important for the development of strategies to identify and characterize promising amyloid inhibitors.

Indexed as

alpha-SynucleinAmyloidCatechinHumansParkinson DiseaseProtein AggregatesProtein Aggregation, Pathologicalalpha-SynucleinAmyloidCatechinepigallocatechin gallateProtein AggregatesamyloidEGCGinhibitionkineticsnucleationParkinson diseaseseeding

Identifiers

PMID32183378
PMCPMC7139648
OpenAlexW3003328308

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.