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Metabolite patterns predicting sex and age in participants of the Karlsruhe Metabolomics and Nutrition (KarMeN) study

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  • Manuela J Rist
  • Alexander Roth
  • Lara Frommherz
  • Christoph H Weinert
  • Ralf Krüger
  • Benedikt Merz
  • Diana Bunzel
  • Carina Mack
  • Björn Egert
  • Achim Bub
  • Benjamin Görling
  • Pavleta Tzvetkova
  • Burkhard Luy
  • Ingrid Hoffmann
  • Sabine E Kulling
  • Bernhard Watzl

Abstract

Physiological and functional parameters, such as body composition, or physical fitness are known to differ between men and women and to change with age. The goal of this study was to investigate how sex and age-related physiological conditions are reflected in the metabolome of healthy humans and whether sex and age can be predicted based on the plasma and urine metabolite profiles.In the cross-sectional KarMeN (Karlsruhe Metabolomics and Nutrition) study 301 healthy men and women aged 18–80 years were recruited. Participants were characterized in detail applying standard operating procedures for all measurements including anthropometric, clinical, and functional parameters. Fasting blood and 24 h urine samples were analyzed by targeted and untargeted metabolomics approaches, namely by mass spectrometry coupled to one- or comprehensive two-dimensional gas chromatography or liquid chromatography, and by nuclear magnetic resonance spectroscopy. This yielded in total more than 400 analytes in plasma and over 500 analytes in urine. Predictive modelling was applied on the metabolomics data set using different machine learning algorithms.Based on metabolite profiles from urine and plasma, it was possible to identify metabolite patterns which classify participants according to sex with > 90% accuracy. Plasma metabolites important for the correct classification included creatinine, branched-chain amino acids, and sarcosine. Prediction of age was also possible based on metabolite profiles for men and women, separately. Several metabolites important for this prediction could be identified including choline in plasma and sedoheptulose in urine. For women, classification according to their menopausal status was possible from metabolome data with > 80% accuracy.The metabolite profile of human urine and plasma allows the prediction of sex and age with high accuracy, which means that sex and age are associated with a discriminatory metabolite signature in healthy humans and therefore should always be considered in metabolomics studies.

Suggested Citation

  • Manuela J Rist & Alexander Roth & Lara Frommherz & Christoph H Weinert & Ralf Krüger & Benedikt Merz & Diana Bunzel & Carina Mack & Björn Egert & Achim Bub & Benjamin Görling & Pavleta Tzvetkova & Bur, 2017. "Metabolite patterns predicting sex and age in participants of the Karlsruhe Metabolomics and Nutrition (KarMeN) study," PLOS ONE, Public Library of Science, vol. 12(8), pages 1-21, August.
    • Handle: RePEc:plo:pone00:0183228
    DOI: 10.1371/journal.pone.0183228
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    1. Kirsi Auro & Anni Joensuu & Krista Fischer & Johannes Kettunen & Perttu Salo & Hannele Mattsson & Marjo Niironen & Jaakko Kaprio & Johan G. Eriksson & Terho Lehtimäki & Olli Raitakari & Antti Jula & A, 2014. "A metabolic view on menopause and ageing," Nature Communications, Nature, vol. 5(1), pages 1-11, December.
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    1. Feraud, Baptiste & Leenders, Justine & Martineau, Estelle & Giraudeau, Patrick & Govaerts, Bernadette & de Tullio, Pascal, 2018. "Two data pre-processing workflows to facilitate the discovery of biomarkers by 2D NMR metabolomics," LIDAM Discussion Papers ISBA 2018016, Université catholique de Louvain, Institute of Statistics, Biostatistics and Actuarial Sciences (ISBA).

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