Metabolic trajectories based on 1H NMR spectra of urines from sheep exposed to nutritional challenges during prenatal and early postnatal life

Nils Nyberg, Mette Benedicte Olaf Nielsen, Jerzy W. Jaroszewski

    10 Citationer (Scopus)

    Abstract

    1H NMR metabolic profiles of urine from sheep exposed to prenatal nutritional restriction (n = 19) and a control group with normal prenatal nutritional requirements (n = 19), followed by either conventional (n = 10 + 10) or high carbohydrate high fat postnatal diet (n = 9 + 9), were studied. Urine was sampled from 2, 6, 19 and 24-month-old animals receiving differential dietary treatments during the first 6 months and the same normal diet later. Principal component analysis of 1H NMR spectra (n = 164) showed a V-shaped metabolic trajectory as a function of age and diet, starting with urines with a high amount of glucose, indicative of monogastric-like metabolism, and exhibiting concomitant increase of metabolites related to rumen microflora (mainly glycine conjugates of benzoic and phenylacetic acid) as the ruminal metabolism developed. Urines from young (2-month-old) animals exposed to prenatal undernutrition followed by normal postnatal diet showed metabolic patters that are ahead in time on the metabolic trajectory relative to the prenatal control group. No long-term effects of fetal undernutrition, alone or in combination with postnatal hypernutrition were observed.
    OriginalsprogEngelsk
    TidsskriftMetabolomics
    Vol/bind6
    Udgave nummer4
    Sider (fra-til)489-496
    Antal sider8
    ISSN1573-3882
    DOI
    StatusUdgivet - dec. 2010

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