Evidence map›Paper›PMID 23227227›Full record

ArticlePloS one2012

The microbiota is essential for the generation of black tea theaflavins-derived metabolites.

Huadong Chen, Saeed Hayek, Javier Rivera Guzman, Nicholas D Gillitt, Salam A Ibrahim, Christian Jobin, Shengmin Sang

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.0field-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

29 citing papers in PubMed, 82 citations in OpenAlex.

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  16. Theaflavin Chemistry and Its Health Benefits.Oxidative medicine and cellular longevity · 2021
    Review
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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

7 authors at 3 institutions in 1 country.

Huadong ChenCenter for Excellence in Post-Harvest Technologies, North Carolina Agricultural and Technical State University, North Carolina Research Campus, Kannapolis, North Carolina, United States of America.
Saeed Hayek
Javier Rivera Guzman
Nicholas D Gillitt
Salam A Ibrahim
Christian Jobin
Shengmin Sang
North Carolina Agricultural and Technical State University · USUniversity of North Carolina at Chapel Hill · USDavid H. Murdock Research Institute · US

Funding

SEEDING POSTDOCTORAL INNOVATORS IN RESEARCH &EDUCATIONK12GM000678 · NIGMS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI DONALD T LYSLE, Kathryn Joanna Reissner · 1999 to 2026
$30.9M
PILOT AND FEASIBILITY STUDIESP30DK034987 · NIDDK · UNIV OF NORTH CAROLINA CHAPEL HILL · PI ROBERT S. SANDLER · 1985 to 2026
$30.5M
The role of klebsiella pneumonia-derived colibactin in colitis-associated colon cancerR01DK073338 · NIDDK · UNIV OF NORTH CAROLINA CHAPEL HILL · PI JOBIN, CHRISTIAN · 2007 to 2023
$5.4M
REGULATION OF IMMUNOSUPPRESSIVE MOLECULES IN IBDR01DK047700 · NIDDK · UNIV OF NORTH CAROLINA CHAPEL HILL · PI JOBIN, CHRISTIAN · 1993 to 2014
$3.2M
NIDDK NIH HHS P30 DK034987NIDDK NIH HHS R01 DK047700NIDDK NIH HHS R01 DK073338NIDDK NIH HHS R01 DK47700NIDDK NIH HHS R01 DK73338NIGMS NIH HHS K12 GM000678NIGMS NIH HHS K12GM000678
6 · The paper itself

Abstract

backgroundTheaflavins including theaflavin (TF), theaflavin-3-gallate (TF3G), theaflavin-3'-gallate (TF3'G), and theaflavin-3,3'-digallate (TFDG), are the most important bioactive polyphenols in black tea. Because of their poor systemic bioavailability, it is still unclear how these compounds can exert their biological functions. The objective of this study is to identify the microbial metabolites of theaflavins in mice and in humans. METHODS AND

findingsIn the present study, we gavaged specific pathogen free (SPF) mice and germ free (GF) mice with 200 mg/kg TFDG and identified TF, TF3G, TF3'G, and gallic acid as the major fecal metabolites of TFDG in SPF mice. These metabolites were absent in TFDG- gavaged GF mice. The microbial bioconversion of TFDG, TF3G, and TF3'G was also investigated in vitro using fecal slurries collected from three healthy human subjects. Our results indicate that TFDG is metabolized to TF, TF3G, TF3'G, gallic acid, and pyrogallol by human microbiota. Moreover, both TF3G and TF3'G are metabolized to TF, gallic acid, and pyrogallol by human microbiota. Importantly, we observed interindividual differences on the metabolism rate of gallic acid to pyrogallol among the three human subjects. In addition, we demonstrated that Lactobacillus plantarum 299v and Bacillus subtilis have the capacity to metabolize TFDG.

conclusionsThe microbiota is important for the metabolism of theaflavins in both mice and humans. The in vivo functional impact of microbiota-generated theaflavins-derived metabolites is worthwhile of further study.

Indexed as

MetagenomeAdultAnimalsBacillus subtilisBiflavonoidsCatechinChromatography, High Pressure LiquidFecesGallic AcidHumansLactobacillusMaleMiceSpecific Pathogen-Free OrganismsTeaBiflavonoidsCatechinGallic AcidTeatheaflavintheaflavin digallatetheaflavine gallate

Identifiers

PMID23227227
PMCPMC3515489
OpenAlexW2094280451

What OpenQuestion holds

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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.