Evidence map›Paper›PMID 34560884›Full record

ArticleMicrobiome2021

Reduced B12 uptake and increased gastrointestinal formate are associated with archaeome-mediated breath methane emission in humans.

Christina Kumpitsch, Florian Ph S Fischmeister, Alexander Mahnert, Sonja Lackner, Marilena Wilding, Corina Sturm, Anna Springer, Tobias Madl, Sandra Holasek, Christoph Högenauer and 3 more

Open access · goldAbstract readVideo-Audio Media
In one paragraph

Article in Microbiome, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
4.4field-weighted citation impact, top 4% 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

47 citing papers in PubMed, 69 citations in OpenAlex.

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  19. Expanding the cultivable human archaeome:International journal of systematic and evolutionary microbiology · 2025
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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

13 authors at 4 institutions in 2 countries.

Christina KumpitschDiagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria.
Florian Ph S FischmeisterDepartment of Psychology, University of Graz, 8010, Graz, Austria.
Alexander MahnertDiagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria.
Sonja LacknerDivision of Immunology and Pathophysiology, Medical University of Graz, 8010, Graz, Austria.
Marilena WildingDepartment of Psychology, University of Graz, 8010, Graz, Austria.
Corina SturmDepartment of Psychology, University of Graz, 8010, Graz, Austria.
Anna SpringerGottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology & Biochemistry, Medical University of Graz, 8010, Graz, Austria.
Tobias MadlGottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology & Biochemistry, Medical University of Graz, 8010, Graz, Austria.
Sandra HolasekDivision of Immunology and Pathophysiology, Medical University of Graz, 8010, Graz, Austria.
Christoph HögenauerDivision of Gastroenterology and Hepatology, Medical University of Graz, Graz, Austria.
Ivan A BergInstitute for Molecular Microbiology and Biotechnology, University of Münster, Münster, Germany.
Veronika SchoepfDepartment of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090, Vienna, Austria.
Christine Moissl-EichingerDiagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria. christine.moissl-eichinger@medunigraz.at.ORCID 0000-0001-6755-6263
Medical University of Graz · ATUniversity of Graz · ATMedical University of Vienna · ATUniversity of Münster · DE

Funding

Austrian Science Fund FWF I 3792Austrian Science Fund FWF P 28854Austrian Science Fund FWF W 1226
6 · The paper itself

Abstract

backgroundMethane is an end product of microbial fermentation in the human gastrointestinal tract. This gas is solely produced by an archaeal subpopulation of the human microbiome. Increased methane production has been associated with abdominal pain, bloating, constipation, IBD, CRC or other conditions. Twenty percent of the (healthy) Western populations innately exhale substantially higher amounts (>5 ppm) of this gas. The underlying principle for differential methane emission and its effect on human health is not sufficiently understood.

resultsWe assessed the breath methane content, the gastrointestinal microbiome, its function and metabolome, and dietary intake of one-hundred healthy young adults (female: n = 52, male: n = 48; mean age =24.1). On the basis of the amount of methane emitted, participants were grouped into high methane emitters (CH

conclusionsThis study enlightens the complex, multi-level interplay of host diet, genetics and microbiome composition/function leading to two fundamentally different gastrointestinal phenotypes and identifies novel points of therapeutic action in methane-associated disorders. Video Abstract.

Indexed as

MethaneMethanobrevibacterAdultAnimalsFemaleFormatesGastrointestinal TractHumansMaleMetagenomicsRumenYoung AdultFormatesMethaneArchaeomeChristensenellaceaeGastrointestinal tractGutMetabolomeMetagenomeMethaneMethanobrevibacterMethanogensMicrobiome

Identifiers

PMID34560884
PMCPMC8464155
OpenAlexW3200587925

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.