Evidence map›Paper›PMID 34855864›Full record

ArticlePloS one2021

In vitro co-metabolism of epigallocatechin-3-gallate (EGCG) by the mucin-degrading bacterium Akkermansia muciniphila.

Yun Xia, Xuxiang Zhang, Mingxin Jiang, Hongbo Zhang, Yinfeng Wang, Yuyu Zhang, Robert Seviour, Yunhong Kong

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 23% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. DifferentialActa biochimica Polonica · 2026
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  5. Review
  6. Dynamic Changes in Jackfruit (Antioxidants (Basel, Switzerland) · 2025
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  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Health and Disease:Research (Washington, D.C.) · 2023
    Article
  13. 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

8 authors at 3 institutions in 2 countries.

Yun XiaSchool of Agriculture and Life Science, Kunming University, Kunming, China.
Xuxiang ZhangFirst Affiliated Hospital of Kunming Medical University, Kunming, China.
Mingxin JiangSchool of Agriculture and Life Science, Kunming University, Kunming, China.
Hongbo ZhangSchool of Agriculture and Life Science, Kunming University, Kunming, China.
Yinfeng WangSchool of Agriculture and Life Science, Kunming University, Kunming, China.
Yuyu ZhangSchool of Agriculture and Life Science, Kunming University, Kunming, China.
Robert SeviourMicrobiology Department, La Trobe University, Bundoora, Victoria, Australia.
Yunhong KongDianchi Lake Environmental Protection Collaborative Research Center, Kunming University, Kunming, China.ORCID 0000-0002-4756-1345
Kunming University · CNKunming Medical University · CNLa Trobe University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Akkermansia muciniphila is a Gram-negative bacterium that resides within the gut mucus layer, and plays an important role in promoting gut barrier integrity, modulating the immune response and inhibiting gut inflammation. Growth stimulation of A. muciniphila by polyphenols including epigallocatechin-3-gallate (EGCG) from difference sources is well-documented. However, no published in vitro culture data on utilization of polyphenols by A. muciniphila are available, and the mechanism of growth-stimulating prebiotic effect of polyphenols on it remains unclear. Here in vitro culture studies have been carried out on the metabolism of EGCG by A. muciniphila in the presence of either mucin or glucose. We found that A. muciniphila did not metabolize EGCG alone but could co-metabolize it together with both these substrates in the presence of mineral salts and amino acids for mucin and protein sources for glucose. Our metabolomic data show that A. muciniphila converts EGCG to gallic acid, epigallocatechin, and (-)-epicatechin through ester hydrolysis. The (-)-epicatechin formed is then further converted to hydroxyhydroquinone. Co-metabolism of A. muciniphila of EGCG together with either mucin or glucose promoted substantially its growth, which serves as a further demonstration of the growth-promoting effect of polyphenols on A. muciniphila and provides an important addition to the currently available proposed mechanisms of polyphenolic prebiotic effects on A. muciniphila.

Indexed as

MetabolomeAkkermansiaCatechinGlucoseIn Vitro TechniquesMucinsCatechinepigallocatechin gallateGlucoseMucins

Identifiers

PMID34855864
PMCPMC8638859
OpenAlexW3217593319

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.