Evidence map›Paper›PMID 33061331›Full record

ArticleClinical interventions in aging2020

Trimethylamine N-Oxide, a Gut Microbiota-Dependent Metabolite, is Associated with Frailty in Older Adults with Cardiovascular Disease.

Wei He, Yao Luo, Jun-Peng Liu, Ning Sun, Di Guo, Ling-Ling Cui, Pei-Pei Zheng, Si-Min Yao, Jie-Fu Yang, Hua Wang

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Clinical interventions in aging, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Involvement of trimethylamine N-oxide in major depressive disorder via astrocytic d-Serine dysregulation.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Article
  5. Review
  6. Relationship BetweenCardiology research and practice · 2026
    Article
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  12. Article
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  20. The gut microbiome as a modulator of healthy ageing.Nature reviews. Gastroenterology & hepatology · 2022
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Wei HeDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.ORCID 0000-0002-4815-4055
Yao LuoDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.
Jun-Peng LiuDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.
Ning SunDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.
Di GuoDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.
Ling-Ling CuiDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.
Pei-Pei ZhengDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.
Si-Min YaoDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.
Jie-Fu YangDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.
Hua WangDepartment of Cardiology, Beijing Hospital, National Center of Gerontology, Beijing, People's Republic of China.
Beijing Hospital · CNChinese Academy of Medical Sciences & Peking Union Medical College · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveOur study aimed to explore the association between trimethylamine N-oxide and frailty in older adults with cardiovascular disease. PATIENTS AND

methodsThis cross-sectional study analyzed a total of 451 people aged 65 years or older who underwent comprehensive geriatric assessments. Frailty status was determined using a frailty index constructed with 48 variables according to the cumulative deficits model. Physical frailty and cognitive frailty were also assessed in detail. Fasting plasma TMAO was measured by mass spectrometry.

resultsThe proportion of frail subjects was 29.9% (135/451). Plasma TMAO levels were significantly higher in frail patients than in nonfrail individuals (4.04 [2.84-7.01] vs 3.21 [2.13-5.03] µM; p<0.001). Elevated plasma TMAO levels were independently associated with the likelihood of frailty (OR 2.12, 95% CI 1.01-4.38, p=0.046). Dose-response analysis revealed a linear association between the TMAO concentration and the OR for frailty. A 2-unit increase in TMAO was independently correlated with physical frailty (OR 1.23, 95% CI 1.08-1.41, p for trend 0.002) and cognitive frailty (OR 1.21, 95% CI 1.01-1.45, p for trend 0.04).

conclusionElevated circulating TMAO levels are independently associated with frailty among older adults with cardiovascular disease.

Indexed as

AgedAged, 80 and overBiomarkersCardiovascular DiseasesCognition DisordersCross-Sectional StudiesFemaleFrail ElderlyGastrointestinal MicrobiomeGeriatric AssessmentHumansMaleMethylaminesMiddle AgedRisk FactorsBiomarkersMethylaminestrimethyloxaminecardiovascular diseasecognitive frailtyfrailtyolder adultsphysical frailtyTMAO

Identifiers

PMID33061331
PMCPMC7534046
OpenAlexW3090724377

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Registered trials

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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.