Evidence map›Paper›PMID 31200429›Full record

ArticleNutrients2019

Plasma Trimethylamine-N-oxide following Cessation of L-carnitine Supplementation in Healthy Aged Women.

Joanna J Samulak, Angelika K Sawicka, Emilia Samborowska, Robert A Olek

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 17% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. The bright and the dark sides of L-carnitine supplementation: a systematic review.Journal of the International Society of Sports Nutrition · 2020
    Pooled it
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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

4 authors at 2 institutions in 1 country.

Joanna J SamulakFaculty of Rehabilitation and Kinesiology, Department of Bioenergetics and Nutrition, Gdansk University Physical Education and Sport, Gorskiego 1, 80-336 Gdansk, Poland. joanna.samulak@awf.gda.pl.
Angelika K SawickaFaculty of Rehabilitation and Kinesiology, Department of Bioenergetics and Nutrition, Gdansk University Physical Education and Sport, Gorskiego 1, 80-336 Gdansk, Poland. angelika.sawicka@awf.gda.pl.
Emilia SamborowskaMass Spectrometry Laboratory, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland. emi.sambor@gmail.com.
Robert A OlekFaculty of Rehabilitation and Kinesiology, Department of Bioenergetics and Nutrition, Gdansk University Physical Education and Sport, Gorskiego 1, 80-336 Gdansk, Poland. robert.olek@aol.com.ORCID 0000-0002-3714-7386
Gdansk University of Physical Education and Sport · PLInstitute of Biochemistry and Biophysics, Polish Academy of Sciences · PL

Funding

Narodowe Centrum Nauki 2014/15/B/NZ7/00893
6 · The paper itself

Abstract

L-carnitine supplementation elevates plasma trimethylamine-N-oxide (TMAO), which may participate in atherosclerosis development by affecting cholesterol metabolism. The aim of the current study was to determine the effect of increased plasma TMAO on biochemical markers in the blood following cessation of L-carnitine supplementation. The follow-up measurements were performed on subjects who completed 24 weeks of L-carnitine or placebo supplementation protocol. Blood samples were taken after finishing the supplementation and then 4 and 12 months following the supplementation withdrawal. Four months after cessation of L-carnitine supplementation, plasma TMAO concentration reached a normal level which was stable for the following eight months. During this period, no modifications in serum lipid profile and circulating leukocyte count were noted. TMAO implications in health and disease is widely discussed. The results of this study demonstrate no adverse effects of elevated plasma TMAO, induced by L-carnitine, on the measured parameters at 4 and 12 months after withdrawal of supplementation.

Indexed as

Withholding TreatmentAgedAtherosclerosisBiomarkersCarnitineDietary SupplementsFemaleFollow-Up StudiesHealthy VolunteersHumansLeukocyte CountLipidsMethylaminesMuscle, SkeletalTime FactorsBiomarkersCarnitineLipidsMethylaminestrimethyloxamineatherosclerosiscardiovascular diseasecholesterolendothelial dysfunctionleukocytes

Identifiers

PMID31200429
PMCPMC6627560
OpenAlexW2949669110

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.