Cited by 180Dialysis and Renal Disease ManagementChronic Kidney Disease and DiabetesGut microbiota and health

Advanced chronic kidney disease populations have elevated trimethylamine N-oxide levels associated with increased cardiovascular events

Open access
Kim, Richard B., Morse, Bridget L., Djurdjev, Ognjenka, Tang, Mila, Muirhead, Norman, Barrett, Brendan, Holmes, Daniel T., Madore, Francois +104 more·2016·Kidney International

Abstract

Cardiovascular disease is more common in patients with chronic kidney disease (CKD), and traditional risk factors do not adequately predict those at risk for cardiovascular (CV) events. Recent evidence suggests elevated trimethylamine N-oxide (TMAO), created by gut microflora from dietary L-carnitine and choline, is associated with CV events. We investigated the relationship of TMAO levels in patients with stages 3b and 4 CKD to ischemic CV events using the CanPREDDICT cohort, a Canada-wide observational study with prospective 3-year follow-up of adjudicated CV events. Baseline samples were obtained for 2529 CKD patients. TMAO, choline, and L-carnitine levels were measured using tandem mass spectrometry. Baseline median TMAO level was high for the whole cohort (20.41 μM; interquartile range [IQR]: 12.82-32.70 μM). TMAO was independently associated with CV events (hazard ratio 1.23; 95% confidence interval: 1.06-1.42 / 1 SD lnTMAO) after adjusting for all potential CV risk factors. Those in the highest TMAO quartile had significantly higher risk of CV events (adjusted hazard ratio 1.59; 95% confidence interval: 1.04-2.43; P = 0.0351) in the analysis of recurring ischemic events. Among those with stage 3b CKD (hazard ratio 1.45; 95% confidence interval: 1.12-1.87 / 1 SD lnTMAO), independent of kidney function, TMAO levels identified those at highest risk for events. Our results suggest that TMAO may represent a new potentially modifiable CV risk factor for CKD patients. Further studies are needed to determine sources of variability and if lowering of TMAO reduces CV risk in CKD.

Integrity signals

Registry

Crossref · 10.1016/j.kint.2016.01.014

Cites

33 of 33 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Kim, R. B., Morse, B. L., Djurdjev, O., Tang, M., Muirhead, N., Barrett, B., Holmes, D. T., Madore, F., Clase, C. M., Rigatto, C., Levin, A., Agharazii, M., Blouin, J., Samson, F., Akbarii, A., Cheesman, J., Courtney, J., Hamer, S., Delic, E., Cronin, V., Barré, P., Golden, J., Barrett, B., Langille, E., Adams, S., Morgan, J., Clase, C., Moreau, C., Cooper, S., Forzley, B., Caron, S., Granger, S., Valley, S., Sather, H., Cournoyer, S., Menard, L., Roy, M., Skidmore, H., Beaudry, D., Dionne, J., Chow, J., Sahraei, V., Donnelly, S., Dacouris, N., Marticorena, R., Hemmelgarn, B., Gulewich, S., Hamilton, T., Keown, P., Zalunardo, N., Rogers, D., Tut, R., Paquette, M., Yung, R., Levin, A., Ferguson, N., Tang, M., Chiu, H., Carlson, K., Sioson, L., Perry, T., Sheriff, Z., Rozen, N., Lok, C., Cross, M., Forrester, C., Cotoi, A., Madore, F., Maltais, M., Moist, L., Gallo, K., Langford, S., Slamen, L., Cram, D., Muirhead, N., Edgar, M. J., Gray, T., Edgar, C., Groeneweg, K., McKinnon, E., McRae, E., Blackie, K., Nathoo, B., Lau, K., Parmar, M., Gelinas, S., Leblanc, M., Lépine, L., Rigatto, C., Friesen, D., Soroka, S., Fleet, S., Squires, J., Thanamayooran, S., Binder, M., Hines, C., McNeil, B., McDougall, P., Howard, J., Gillis, D., Hines, K., Tobe, S., Chessman, M., Perkins, N., Agelopoulos, M., Knox, S., Richards, T., Tonelli, M., Szigety, S., Opgenorth, D., Yeates, K., & Mahoney, K.
Affiliations
  • Western University (CA)
  • University of British Columbia (CA)
  • Memorial University of Newfoundland (CA)
  • McMaster University (CA)
  • University of Manitoba (CA)
Corresponding author
Kim, Richard B.
Venue
Kidney International
Publisher
Elsevier BV
Published
2016-05
Volume
89
Issue
5
Pages
1144-1152
ISSN
0085-2538 (ISSN-L)
OpenAlex
W2300515179
Cited by
179
References
33
Citations by year
2026: 12 · 2025: 15 · 2024: 15 · 2023: 21 · 2022: 19 · 2021: 20 · 2020: 23 · 2019: 15 · 2018: 19 · 2017: 13 · 2016: 6 · 2012: 1
FWCI
17.73
Type
journal article
Language
en
Open access
Locations
  • Kidney International (publishedVersion)
  • PubMed (publishedVersion)
  • Scholarship@Western (Western University) (submittedVersion)
Funders
Canadian Institutes of Health Research (MOP-89753)
Topics
  • Health Sciences › Medicine › Nephrology › Dialysis and Renal Disease Management
  • Health Sciences › Medicine › Nephrology › Chronic Kidney Disease and Diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
Keywords
trimethylamine N-oxide, chronic kidney disease, cardiovascular events, ischemic cardiovascular events, gut microbiota, L-carnitine, choline, cardiovascular risk factors
MeSH terms
Aged, Aged, 80 and over, Canada, Cardiovascular Diseases, Female, Glomerular Filtration Rate, Humans, Kidney, Male, Methylamines, Middle Aged, Prospective Studies, Risk Factors, Severity of Illness Index, Time Factors, Biomarkers, Up-Regulation, Risk Assessment, Disease-Free Survival, Renal Insufficiency, Chronic, Kaplan-Meier Estimate, Tandem Mass Spectrometry

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review