Cited by 1,223Gut microbiota and healthChronic Kidney Disease and DiabetesDialysis and Renal Disease Management

The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index; none of the 29 sources its claims cite is checked for support yet.

Gut Microbiota-Dependent Trimethylamine N -Oxide (TMAO) Pathway Contributes to Both Development of Renal Insufficiency and Mortality Risk in Chronic Kidney Disease

Open access

Abstract

Rationale: Trimethylamine- N -oxide (TMAO), a gut microbial-dependent metabolite of dietary choline, phosphatidylcholine (lecithin), and l -carnitine, is elevated in chronic kidney diseases (CKD) and associated with coronary artery disease pathogenesis. Objective: To both investigate the clinical prognostic value of TMAO in subjects with versus without CKD, and test the hypothesis that TMAO plays a direct contributory role in the development and progression of renal dysfunction. Methods and Results: We first examined the relationship between fasting plasma TMAO and all-cause mortality over 5-year follow-up in 521 stable subjects with CKD (estimated glomerular filtration rate, <60 mL/min per 1.73 m 2 ). Median TMAO level among CKD subjects was 7.9 μmol/L (interquartile range, 5.2–12.4 μmol/L), which was markedly higher ( P <0.001) than in non-CKD subjects (n=3166). Within CKD subjects, higher (fourth versus first quartile) plasma TMAO level was associated with a 2.8-fold increased mortality risk. After adjustments for traditional risk factors, high-sensitivity C-reactive protein, estimated glomerular filtration rate, elevated TMAO levels remained predictive of 5-year mortality risk (hazard ratio, 1.93; 95% confidence interval, 1.13–3.29; P <0.05). TMAO provided significant incremental prognostic value (net reclassification index, 17.26%; P <0.001 and differences in area under receiver operator characteristic curve, 63.26% versus 65.95%; P =0.036). Among non-CKD subjects, elevated TMAO levels portend poorer prognosis within cohorts of high and low cystatin C. In animal models, elevated dietary choline or TMAO directly led to progressive renal tubulointerstitial fibrosis and dysfunction. Conclusions: Plasma TMAO levels are both elevated in patients with CKD and portend poorer long-term survival. Chronic dietary exposures that increase TMAO directly contributes to progressive renal fibrosis and dysfunction in animal models.

Overview

Integrity signals

Registry

Crossref · 10.1161/circresaha.116.305360

Cites

43 of 43 references verified0 citation errors · 0 not checkable

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25 Own result · 14 Not checked yet · 7 Own interpretation · 2 Own method

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  • It may state two separate claims as one. 7
  • Probably not a substantial claim. 10
15 of 15
  • The paper relies on this without support.

    No prior studies had directly examined long-term mortality risk from TMAO in CKD subjects.

    “However, no studies to date have directly looked at the long-term mortality risk of TMAO among CKD subjects.”
  • The paper relies on this without support.

    No prior study had reported a direct role for TMAO in renal functional impairment.

    “A direct role for TMAO in impacting renal functional impairment has not been reported.”
  • The paper relies on this without support.

    The mechanism linking CKD to atherosclerotic heart disease is not fully understood.

    “Yet the mechanism(s) through which CKD is linked to enhanced atherosclerotic heart disease is not fully elucidated.”
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Metadata

Authors
Tang, W. H. W., Wang, Z., Kennedy, D. J., Wu, Y., Buffa, J. A., Agatisa-Boyle, B., Li, X. S., Levison, B. S., & Hazen, S. L.
Affiliations
Cleveland State University (US)
Venue
Circulation Research
Published
2015-01-30
Volume
116
Issue
3
Pages
448-455
ISSN
  • 0009-7330 (ISSN-L)
  • 1524-4571
OpenAlex
W2150350691
Cited by
1,223
References
43
Citations by year
2026: 92 · 2025: 140 · 2024: 101 · 2023: 128 · 2022: 135 · 2021: 130 · 2020: 125 · 2019: 84 · 2018: 94 · 2017: 80 · 2016: 80 · 2015: 32
FWCI
26.22
Type
journal article
Language
en
Open access
Locations
  • Circulation Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • EngagedScholarship @ Cleveland State University (Cleveland State University) (submittedVersion)
Funders
  • National Institutes of Health (UL1TR000439)
  • National Heart, Lung, and Blood Institute (R01HL103931, P20HL113452, P01HL076491, P01HL098055, R01HL103866)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK106000)
  • National Center for Advancing Translational Sciences
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Nephrology › Chronic Kidney Disease and Diabetes
  • Health Sciences › Medicine › Nephrology › Dialysis and Renal Disease Management
Keywords
trimethylamine N-oxide, chronic kidney disease, renal failure, gut microbiota, dietary choline, phosphatidylcholine, L-carnitine, all-cause mortality, prognostic factors, renal fibrosis, cystatin C, cardiovascular risk
MeSH terms
Aged, Aged, 80 and over, Animals, Female, Humans, Intestines, Male, Methylamines, Mice, Inbred C57BL, Middle Aged, Prognosis, Risk Factors, Biomarkers, Case-Control Studies, Mice, Renal Insufficiency, Chronic, Renal Insufficiency, Microbiota

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