François-Pierre J Martin1, Sofia Moco2, Ivan Montoliu3, Sebastiano Collino1, Laeticia Da Silva1, Serge Rezzi1, Ruth Prieto4, Martin Kussmann5, Jaime Inostroza6, Philippe Steenhout7. 1. Department of Molecular Biomarkers, Nestlé Institute of Health Sciences, Lausanne, Switzerland. 2. Department of Natural Bioactives and Screening, Nestlé Institute of Health Sciences, Lausanne, Switzerland. 3. Nestec, Nestle Research Center, Lausanne, Switzerland. 4. Department of Gynecology and Obstetrics, Faculty of Medicine, University of La Frontera, Temuco, Chile. 5. 1] Department of Molecular Biomarkers, Nestlé Institute of Health Sciences, Lausanne, Switzerland [2] Faculty of Life Sciences, E´cole Polytechnique Fédérale Lausanne (EPFL), Lausanne, Switzerland [3] Faculty of Sciences, Aarhus University, Aarhus, Denmark. 6. Department of Basic Sciences, Center for Genomics and Immunological Studies (Cegin), Faculty of Medicine, University of La Frontera, Temuco, Chile. 7. Nestec, Clinical Development Unit, Lausanne, Switzerland.
Abstract
BACKGROUND: The combination of maternal obesity in early pregnancy and high protein intake in infant formula feeding might predispose to obesity risk in later life. METHODS: This study assesses the impact of breast- or formula-feeding (differing in protein content by 1.65 or 2.7 g/100 kcal) on the metabolism of term infants from overweight and obese mothers. From birth to 3 mo of age, infants received exclusively either breast- or starter formula-feeding and until 6 mo, exclusively either a formula designed for this study or breast-feeding. From 6 to 12 mo, infants received complementary weaning food. Metabonomics was conducted on the infants' urine and stool samples collected at the age of 3, 6, and 12 mo. RESULTS: Infant formula-feeding resulted in higher protein-derived short-chain fatty acids and amino acids in stools. Urine metabonomics revealed a relationship between bacterial processing of dietary proteins and host protein metabolism stimulated with increasing protein content in the formula. Moreover, formula-fed infants were metabolically different from breast-fed infants, at the level of lipid and energy metabolism (carnitines, ketone bodies, and Krebs cycle). CONCLUSION: Noninvasive urine and stool metabolic monitoring of responses to early nutrition provides relevant readouts to assess nutritional requirements for infants' growth.
BACKGROUND: The combination of maternal obesity in early pregnancy and high protein intake in infant formula feeding might predispose to obesity risk in later life. METHODS: This study assesses the impact of breast- or formula-feeding (differing in protein content by 1.65 or 2.7 g/100 kcal) on the metabolism of term infants from overweight and obese mothers. From birth to 3 mo of age, infants received exclusively either breast- or starter formula-feeding and until 6 mo, exclusively either a formula designed for this study or breast-feeding. From 6 to 12 mo, infants received complementary weaning food. Metabonomics was conducted on the infants' urine and stool samples collected at the age of 3, 6, and 12 mo. RESULTS:Infant formula-feeding resulted in higher protein-derived short-chain fatty acids and amino acids in stools. Urine metabonomics revealed a relationship between bacterial processing of dietary proteins and host protein metabolism stimulated with increasing protein content in the formula. Moreover, formula-fed infants were metabolically different from breast-fed infants, at the level of lipid and energy metabolism (carnitines, ketone bodies, and Krebs cycle). CONCLUSION: Noninvasive urine and stool metabolic monitoring of responses to early nutrition provides relevant readouts to assess nutritional requirements for infants' growth.
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