Evidence map›Paper›PMID 29581220›Full record

Trial reportJournal of the American Heart Association2018

Effect of Vegan Fecal Microbiota Transplantation on Carnitine- and Choline-Derived Trimethylamine-N-Oxide Production and Vascular Inflammation in Patients With Metabolic Syndrome.

Loek P Smits, Ruud S Kootte, Evgeni Levin, Andrei Prodan, Susana Fuentes, Erwin G Zoetendal, Zeneng Wang, Bruce S Levison, Maartje C P Cleophas, E Marleen Kemper and 8 more

Open access · goldAbstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in Journal of the American Heart Association, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 152 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
152citing papers in PubMed, 7 pooled it
13.9field-weighted citation impact, top 1% 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

152 citing papers in PubMed, 7 syntheses or guidelines pooled it, 240 citations in OpenAlex.

  1. Pooled it
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  8. Trial
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  14. Gut microbes · 2026
    Review
  15. Fecal Microbiota Transplantation BeyondJournal of Korean medical science · 2026
    Review
  16. Trimethylamine-N-oxide: the microbial cue in immune-mediated disorders.Trends in endocrinology and metabolism: TEM · 2026
    Review
  17. Review
  18. Review
  19. Review
  20. Review

92 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

18 authors at 8 institutions in 4 countries.

Loek P SmitsDepartment of Vascular Medicine, Academic Medical Center, University of Amsterdam, The Netherlands.
Ruud S KootteDepartment of Vascular Medicine, Academic Medical Center, University of Amsterdam, The Netherlands.
Evgeni LevinDepartment of Vascular Medicine, Academic Medical Center, University of Amsterdam, The Netherlands.
Andrei ProdanDepartment of Vascular Medicine, Academic Medical Center, University of Amsterdam, The Netherlands.
Susana FuentesLaboratory of Microbiology, Wageningen University and Research Center, Wageningen, The Netherlands.
Erwin G ZoetendalLaboratory of Microbiology, Wageningen University and Research Center, Wageningen, The Netherlands.
Zeneng WangDepartment of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH.
Bruce S LevisonDepartment of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH.
Maartje C P CleophasDepartment of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, The Netherlands.
E Marleen KemperDepartment of Clinical Pharmacy, Academic Medical Center, University of Amsterdam, The Netherlands.
Geesje M Dallinga-ThieDepartment of Vascular Medicine, Academic Medical Center, University of Amsterdam, The Netherlands.
Albert K GroenDepartment of Vascular Medicine, Academic Medical Center, University of Amsterdam, The Netherlands.
Leo A B JoostenDepartment of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, The Netherlands.
Mihai G NeteaDepartment of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, The Netherlands.
Erik S G StroesDepartment of Vascular Medicine, Academic Medical Center, University of Amsterdam, The Netherlands.
Willem M de VosLaboratory of Microbiology, Wageningen University and Research Center, Wageningen, The Netherlands.
Stanley L HazenDepartment of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH.
Max NieuwdorpDepartment of Vascular Medicine, Academic Medical Center, University of Amsterdam, The Netherlands m.nieuwdorp@amc.uva.nl.
University of Amsterdam · NLAcademic Medical Center · NLWageningen University & Research · NLCleveland Clinic Lerner College of Medicine · USRadboud University Nijmegen · NLRadboud University Medical Center · NLUniversity of Gothenburg · SEUniversity of Toledo · US

Funding

Gut Flora Metabolism of Dietary Phosphatidylcholine and CVDR01HL103866 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI HAZEN, STANLEY L · 2010 to 2023
$10.8M
TMAO and Initiation, Extent, and Clinical Onset of Atherosclerotic CVDR01HL135920 · NHLBI · TUFTS UNIVERSITY BOSTON · PI Stanley L Hazen, DARIUSH MOZAFFARIAN · 2017 to 2026
$8.7M
Functional Cardio-MetabolomicsP20HL113452 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI HAZEN, STANLEY L, TANG, WAI HONG WILSON · 2012 to 2016
$4.8M
Diet, Gut Microbiota, and Heart FailureR01HL126827 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI HAZEN, STANLEY L, TANG, WAI HONG WILSON · 2016 to 2019
$3.1M
Dietary Choline, Gut Microbiota, and Susceptibility for Chronic Kidney DiseaseR01DK106000 · NIDDK · CLEVELAND CLINIC LERNER COM-CWRU · PI HAZEN, STANLEY L, TANG, WAI HONG WILSON · 2015 to 2018
$2.8M
Microbial Trimethylamine Lyases and AtherosclerosisR01HL130819 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI WANG, ZENENG · 2016 to 2019
$1.7M
European Research Council 250172European Research Council 310372NHLBI NIH HHS P20 HL113452NHLBI NIH HHS R01 HL103866NHLBI NIH HHS R01 HL126827NHLBI NIH HHS R01 HL130819NHLBI NIH HHS R01 HL135920NIDDK NIH HHS R01 DK106000
6 · The paper itself

Abstract

backgroundIntestinal microbiota have been found to be linked to cardiovascular disease via conversion of the dietary compounds choline and carnitine to the atherogenic metabolite TMAO (trimethylamine-N-oxide). Specifically, a vegan diet was associated with decreased plasma TMAO levels and nearly absent TMAO production on carnitine challenge. METHODS AND

resultsWe performed a double-blind randomized controlled pilot study in which 20 male metabolic syndrome patients were randomized to single lean vegan-donor or autologous fecal microbiota transplantation. At baseline and 2 weeks thereafter, we determined the ability to produce TMAO from d

conclusionsSingle lean vegan-donor fecal microbiota transplantation in metabolic syndrome patients resulted in detectable changes in intestinal microbiota composition but failed to elicit changes in TMAO production capacity or parameters related to vascular inflammation. CLINICAL

trial registrationURL: http://www.trialregister.nl. Unique identifier: NTR 4338.

Indexed as

Diet, VeganFecal Microbiota TransplantationGastrointestinal MicrobiomeAdultAgedBacteriaCarnitineCholineCytokinesDouble-Blind MethodFecesHumansInflammation MediatorsMaleMetabolic SyndromeMethylaminesCarnitineCholineCytokinesInflammation MediatorsMethylaminestrimethyloxamineatherosclerosiscardiovascular diseasecardiovascular imaginginflammationmetabolism

Identifiers

PMID29581220
PMCPMC5907601
OpenAlexW2789463949

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.