Cited by 229Diabetes, Cardiovascular Risks, and LipoproteinsNitric Oxide and Endothelin EffectsMetabolism and Genetic Disorders

Diabetes is Associated with Higher Trimethylamine N-oxide Plasma Levels

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Dambrova, M., Latkovskis, G., Kuka, J., Strele, I., Konrade, I., Grinberga, S., Hartmane, D., Pugovics, O +2 more·2016·Experimental and Clinical Endocrinology & Diabetes

Abstract

Recent studies have revealed strong associations between systemic trimethylamine N-oxide (TMAO) levels, atherosclerosis and cardiovascular risk. In addition, plasma L-carnitine levels in patients with high TMAO concentrations predicted an increased risk for cardiovascular disease and incident major adverse cardiac events. The aim of the present study was to investigate the relation between TMAO and L-carnitine plasma levels and diabetes. Blood plasma samples were collected from 12 and 20 weeks old db/db mice and patients undergoing percutaneous coronary intervention. Diabetic compared to non-diabetic db/L mice presented 10-fold higher TMAO, but lower L-carnitine plasma concentrations at 12 weeks of age. After 8 weeks of observation, diabetic db/db mice had significantly increased body weight, insulin resistance and TMAO concentration in comparison to non-diabetic control. In 191 patients undergoing percutaneous coronary intervention the median (interquartile range) plasma concentration of TMAO was 1.8 (1.2-2.6) µmol/L. Analysis of the samples showed a bivariate association of TMAO level with age, total cholesterol and L-carnitine. The multivariate linear regression analysis revealed that, in addition to L-carnitine as the strongest predictor of log transformed TMAO (p<0.001), the parameters of age, diabetes status and body mass index (BMI) were independently associated with increased log transformed TMAO levels (p<0.01).Our data provide evidence that age, diabetes and BMI are associated with higher TMAO levels independently of L-carnitine. These data support the hypothesis of TMAO as a cardiovascular risk marker and warrant further investigation of TMAO for diabetes research applications.

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  • Differences in characteristics and disease status of participants across studies might affect TMAO levels and therefore partly explain inconsistency in associations.

    “Differences in characteristics and disease status of participants across studies might affect TMAO levels14, 27, 28 and therefore partly explain such inconsistency.”
  • In 191 patients undergoing coronary intervention, plasma TMAO was independently associated with age, diabetes, and body mass index.

    “In a group of 191 patients undergoing coronary intervention, plasma TMAO concentrations were independently associated with the patients' age, diabetes, and body mass index (35).”
  • Vascular tissue factor promotes thrombosis and vascular inflammation, particularly in patients with type 2 diabetes who have higher levels of circulating trimethylamine N-oxide.

    “Vascular TF promotes thrombosis and vascular inflammation123, particularl y in patients with type 2 diabetes who have higher levels of circulating TMAO124–126.”

    From Gut microbiota and cardiovascular disease. (2020) · cites this paper as [126]

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Research works printed but not linked: 3

  1. Grinberga S, Dambrova M, Latkovskis G et al. Determination of trimeth- ylamine-N-oxide in combination with l-carnitine and γ-butyrobetaine in human plasma by UPLC/MS/MS. Biomed Chromatogr 2015; 29: 1670-1674
  2. Li X, Chen Y, Liu J et al. Serum metabolic variables associated with impaired glucose tolerance induced by high-fat-high-cholesterol diet in Macaca mulatta. Exp Biol Med (Maywood) 2012; 237: 1310-1321
  3. McEntyre CJ, Lever M, Chambers ST et al. Variation of betaine, N,N- dimethylglycine, choline, glycerophosphorylcholine, taurine and tri- methylamine-N-oxide in the plasma and urine of overweight people with type 2 diabetes over a two-year period. Ann Clin Biochem 2015; 52: 352-360

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Authors
Dambrova, M., Latkovskis, G., Kuka, J., Strele, I., Konrade, I., Grinberga, S., Hartmane, D., Pugovics, O., Erglis, A., & Liepinsh, E.
Affiliations
  • Latvijas Organiskās Sintēzes Institūts (LV)
  • Pauls Stradiņš Clinical University Hospital (LV)
  • Riga Stradins University, Riga, Latvia
  • Latvian Institute of Organic Synthesis, Riga, Latvia
  • Paul Stradins Clinical University Hospital, Riga, Latvia
Corresponding author
Dambrova, M.
Venue
Experimental and Clinical Endocrinology & Diabetes
Published
2016-04-28
Volume
124
Issue
04
Pages
251-256
ISSN
  • 0947-7349 (ISSN-L)
  • 1439-3646
OpenAlex
W2342504128
Cited by
229
References
29
Citations by year
2026: 9 · 2025: 20 · 2024: 24 · 2023: 20 · 2022: 31 · 2021: 30 · 2020: 22 · 2019: 25 · 2018: 25 · 2017: 18 · 2016: 4
FWCI
24.05
Type
journal article
Language
en
Open access
Locations
  • Experimental and Clinical Endocrinology & Diabetes (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
Keywords
trimethylamine N-oxide, diabetes mellitus, L-carnitine, db/db mice, insulin resistance, cardiovascular risk markers, percutaneous coronary intervention, body mass index, age, atherosclerosis, plasma biomarkers
MeSH terms
Age Factors, Aged, Animals, Cardiovascular Diseases, Carnitine, Diabetes Mellitus, Disease Models, Animal, Female, Humans, Male, Methylamines, Middle Aged, Body Mass Index, Mice

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