Cited by 81Metabolomics and Mass Spectrometry StudiesNutritional Studies and DietNutrition, Genetics, and Disease

Assessment of the effect of high or low protein diet on the human urine metabolome as measured by NMR

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Rasmussen, Lone G., Winning, Hanne, Savorani, Francesco, Toft, Henrik, Larsen, Thomas M., Dragsted, Lars O., Astrup, Arne, Engelsen, Søren B.·2012·Nutrients

Abstract

The objective of this study was to identify urinary metabolite profiles that discriminate between high and low intake of dietary protein during a dietary intervention. Seventy-seven overweight, non-diabetic subjects followed an 8-week low-calorie diet (LCD) and were then randomly assigned to a high (HP) or low (LP) protein diet for 6 months. Twenty-four hours urine samples were collected at baseline (prior to the 8-week LCD) and after dietary intervention; at months 1, 3 and 6, respectively. Metabolite profiling was performed by (1)H NMR and chemometrics. Using partial least squares regression (PLS), it was possible to develop excellent prediction models for urinary nitrogen (root mean square error of cross validation (RMSECV) = 1.63 mmol/L; r = 0.89) and urinary creatinine (RMSECV = 0.66 mmol/L; r = 0.98). The obtained high correlations firmly establish the validity of the metabolomic approach since urinary nitrogen is a well established biomarker for daily protein consumption. The models showed that trimethylamine-N-oxide (TMAO) is correlated to urinary nitrogen. Furthermore, urinary creatine was found to be increased by the HP diet whereas citric acid was increased by the LP diet. Despite large variations in individual dietary intake, differentiated metabolite profiles were observed at the dietary group-level.

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Authors
Rasmussen, L. G., Winning, H., Savorani, F., Toft, H., Larsen, T. M., Dragsted, L. O., Astrup, A., & Engelsen, S. B.
Affiliations
  • University of Copenhagen (DK)
  • University College Capital (DK)
Corresponding author
Engelsen, Søren B.
Venue
Nutrients
Publisher
MDPI AG
Published
2012-02-20
Volume
4
Issue
2
Pages
112-131
ISSN
2072-6643 (ISSN-L)
OpenAlex
W2040668607
Cited by
81
References
37
Citations by year
2026: 2 · 2025: 1 · 2024: 3 · 2023: 2 · 2022: 5 · 2021: 4 · 2020: 6 · 2019: 7 · 2018: 5 · 2017: 4 · 2016: 6 · 2015: 7 · 2014: 12 · 2013: 14 · 2012: 3
FWCI
4.62
Type
journal article
Language
en
Open access
Locations
  • Nutrients (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PORTO@Iris (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Funders
  • Ministeriet for Fø devarer, Landbrug og Fiskeri
  • Novo Nordisk
  • FP7 Food, Agriculture and Fisheries, Biotechnology (266331)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Nutrition, Genetics, and Disease
Keywords
protein intake, high-protein diet, low-protein diet, urinary metabolome, urinary nitrogen, urinary creatinine, trimethylamine N-oxide, urinary creatine, citric acid, metabolite profiling, overweight adults
MeSH terms
Adult, Creatinine, Dietary Proteins, Female, Humans, Male, Middle Aged, Nitrogen, Magnetic Resonance Spectroscopy, Obesity, Urine, Diet, Protein-Restricted, Citric Acid, Metabolomics

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