Evidence map›Paper›PMID 20634953›Full record

Trial reportPloS one2010

Medium chain acylcarnitines dominate the metabolite pattern in humans under moderate intensity exercise and support lipid oxidation.

Rainer Lehmann, Xinjie Zhao, Cora Weigert, Perikles Simon, Elvira Fehrenbach, Jens Fritsche, Jürgen Machann, Fritz Schick, Jiangshan Wang, Miriam Hoene and 4 more

Open access · goldAbstract readClinical Trial
In one paragraph

Trial report in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 2 pooled it
3.7field-weighted citation impact, top 6% 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

78 citing papers in PubMed, 2 syntheses or guidelines pooled it, 140 citations in OpenAlex.

  1. Metabolomics in Exercise and Sports: A Systematic Review.Sports medicine (Auckland, N.Z.) · 2022
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  9. Targeted Lipidomics RevealsFood science & nutrition · 2026
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18 more citing papers are in PubMed but not listed here.

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

14 authors at 6 institutions in 3 countries.

Rainer LehmannCentral Laboratory, Division of Clinical Chemistry and Pathobiochemistry, University Hospital Tuebingen, Tuebingen, Germany. Rainer.Lehmann@med.uni-tuebingen.de
Xinjie Zhao
Cora Weigert
Perikles Simon
Elvira Fehrenbach
Jens Fritsche
Jürgen Machann
Fritz Schick
Jiangshan Wang
Miriam Hoene
Erwin D Schleicher
Hans-Ulrich Häring
Guowang Xu
Andreas M Niess
University of Tübingen · DEDalian Institute of Chemical Physics · CNChinese Academy of Sciences · CNImmatics Biotechnologies (Germany) · DEInstitute for Transfusion Medicine · USJohannes Gutenberg University Mainz · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExercise is an extreme physiological challenge for skeletal muscle energy metabolism and has notable health benefits. We aimed to identify and characterize metabolites, which are components of the regulatory network mediating the beneficial metabolic adaptation to exercise. METHODOLOGY AND PRINCIPAL

findingsFirst, we investigated plasma from healthy human subjects who completed two independent running studies under moderate, predominantly aerobic conditions. Samples obtained prior to and immediately after running and then 3 and 24 h into the recovery phase were analyzed by a non-targeted (NT-) metabolomics approach applying liquid chromatography-qTOF-mass spectrometry. Under these conditions medium and long chain acylcarnitines were found to be the most discriminant plasma biomarkers of moderately intense exercise. Immediately after a 60 min (at 93% V(IAT)) or a 120 min run (at 70% V(IAT)) a pronounced, transient increase dominated by octanoyl-, decanoyl-, and dodecanoyl-carnitine was observed. The release of acylcarnitines as intermediates of partial beta-oxidation was verified in skeletal muscle cell culture experiments by probing (13)C-palmitate metabolism. Further investigations in primary human myotubes and mouse muscle tissue revealed that octanoyl-, decanoyl-, and dodecanoyl-carnitine were able to support the oxidation of palmitate, proving more effective than L-carnitine.

conclusionsMedium chain acylcarnitines were identified and characterized by a functional metabolomics approach as the dominating biomarkers during a moderately intense exercise bout possessing the power to support fat oxidation. This physiological production and efflux of acylcarnitines might exert beneficial biological functions in muscle tissue.

Indexed as

AdultAnimalsCarnitineCells, CulturedChromatography, High Pressure LiquidExerciseHumansIn Vitro TechniquesLipid MetabolismMagnetic Resonance SpectroscopyMaleMass SpectrometryMiceMuscle Fibers, SkeletalMuscle, SkeletalOxidation-ReductionacylcarnitineCarnitine

Identifiers

PMID20634953
PMCPMC2902514
OpenAlexW2071259051

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.