Evidence map›Paper›PMID 30925749›Full record

ArticleBiomolecules2019

Quantification of Fecal Short Chain Fatty Acids by Liquid Chromatography Tandem Mass Spectrometry-Investigation of Pre-Analytic Stability.

Gerhard Liebisch, Josef Ecker, Sebastian Roth, Sabine Schweizer, Veronika Öttl, Hans-Frieder Schött, Hongsup Yoon, Dirk Haller, Ernst Holler, Ralph Burkhardt and 1 more

Abstract read
In one paragraph

Article in Biomolecules, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
–field-weighted citation impact
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

52 citing papers in PubMed.

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  14. ComparingGut microbes · 2025
    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

11 authors.

Gerhard LiebischInstitute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany. gerhard.liebisch@ukr.de.ORCID 0000-0003-4886-0811
Josef EckerNutritional Physiology, Technical University of Munich, 85354 Freising, Germany. josef.ecker@tum.de.
Sebastian RothInstitute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany. sebastian.roth@ukr.de.
Sabine SchweizerInstitute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany. Schweizer.sabine@gmx.net.
Veronika ÖttlInstitute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany. Veronika.Oettl@stud.uni-regensburg.de.
Hans-Frieder SchöttInstitute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany. hans-frieder.schoett@isas.de.
Hongsup YoonZIEL-Institute for Food & Health, Technical University of Munich, 85354 Freising, Germany. Hongsup.Yoon@tum.de.
Dirk HallerZIEL-Institute for Food & Health, Technical University of Munich, 85354 Freising, Germany. dirk.haller@tum.de.
Ernst HollerDepartment of Hematology and Oncology, Internal Medicine III, University Hospital Regensburg, 93053 Regensburg, Germany. Ernst.Holler@ukr.de.
Ralph BurkhardtInstitute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany. Ralph.Burkhardt@ukr.de.
Silke MatysikInstitute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany. silke.matysik@ukr.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Short chain fatty acids (SCFAs) are generated by the degradation and fermentation of complex carbohydrates, (i.e., dietary fiber) by the gut microbiota relevant for microbe⁻host communication. Here, we present a method for the quantification of SCFAs in fecal samples by liquid chromatography tandem mass spectrometry (LC-MS/MS) upon derivatization to 3-nitrophenylhydrazones (3NPH). The method includes acetate, propionate, butyrate, and isobutyrate with a run time of 4 min. The reproducible (coefficients of variation (CV) below 10%) quantification of SCFAs in human fecal samples was achieved by the application of stable isotope labelled internal standards. The specificity was demonstrated by the introduction of a quantifier and qualifier ions. The method was applied to investigate the pre-analytic stability of SCFAs in human feces. Concentrations of SCFA may change substantially within hours; the degree and kinetics of these changes revealed huge differences between the donors. The fecal SCFA level could be preserved by the addition of organic solvents like isopropanol. An analysis of the colon content of mice either treated with antibiotics or fed with a diet containing a non-degradable and -fermentable fiber source showed decreased SCFA concentrations. In summary, this fast and reproducible method for the quantification of SCFA in fecal samples provides a valuable tool for both basic research and large-scale studies.

Indexed as

AnimalsChromatography, LiquidFatty Acids, VolatileHumansMiceMice, Inbred C57BLQuality ControlTandem Mass SpectrometryFatty Acids, VolatilefecesLC-MS/MSmass spectrometrymethod validationSCFA

Identifiers

PMID30925749
PMCPMC6523859

What OpenQuestion holds

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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.