Metabolomic signatures of low birthweight : pathways to insulin resistance and oxidative stress
Metrustry, Sarah Jane; Karhunen, Ville; Edwards, Mark H.; Menni, Cristina; Geisendorfer, Thomas; Huber, Anja; Reichel, Christian; Dennison, Elaine M.; Cooper, Cyrus; Spector, Tim; Järvelin, Marjo-Riitta; Valdes, Ana M. (2018-03-22)
Metrustry SJ, Karhunen V, Edwards MH, Menni C, Geisendorfer T, et al. (2018) Metabolomic signatures of low birthweight: Pathways to insulin resistance and oxidative stress. PLOS ONE 13(3): e0194316. https://doi.org/10.1371/journal.pone.0194316
© 2018 Metrustry et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Several studies suggest that low birthweight resulting from restricted intrauterine growth can leave a metabolic footprint which may persist into adulthood. To investigate this, we performed metabolomic profiling on 5036 female twins, aged 18–80, with weight at birth information available from the TwinsUK cohort and performed independent replication in two additional cohorts. Out of 422 compounds tested, 25 metabolites associated with birthweight in these twins, replicated in 1951 men and women from the Hertfordshire Cohort Study (HCS, aged 66) and in 2391 men and women from the North Finland Birth 1986 cohort (NFBC, aged 16). We found distinct heterogeneity between sexes and, after adjusting for multiple tests and heterogeneity, two metabolites were reproducible overall (propionylcarnitine and 3-4-hydroxyphenyllactate). Testing women only, we found other metabolites associated with lower birthweight from the meta-analysis of the three cohorts (2-hydroxy-butyric acid and γ-glutamylleucine). Higher levels of all these metabolites can be linked to insulin resistance, oxidative stress or a dysfunction of energy metabolism, suggesting that low birthweight in both twins and singletons are having an impact on these pathways in adulthood.
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