Evaluation of a Novel Recombinant Human Protein Formula Compared to Donor Human Milk and Standard Formula in Neonatal Piglets
Elefson, S.; Melendez Hebib, V.; Hoeprich, G.; Lau, J.; de Macedo Robert, J.; Wanessa Santana de Souza, M.; Ramalho Silva, M.; Vonderohe, C.; Guthrie, G.; Stoll, B.; Alfonso, D.; Burrin, D.
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BackgroundDespite the advancements in infant nutrition, a gap still exists in the nutritional composition bioactive ingredients between infant formula and human milk. We developed a next-generation, proof-of-concept infant formula that contains recombinant human milk proteins. ObjectiveTo determine the impact of a novel infant formula (H1) on organ growth and development, and intestinal function compared to donor human milk (DHM) and standard infant formula (S) in a term piglet model. MethodsTerm piglets delivered via cesarean section were fed either a donor human milk (DHM) control, the investigational formula (H1), or infant formula (S) for 10 days. On d 10, a blood sample and tissues were collected. ResultsThere was no difference (P > 0.05) in piglet growth, although H1 piglets had a smaller relative stomach and liver than DHM and S piglets. H1 piglets had higher (P < 0.05) interleukins in the distal ileum, but no other systemic cytokines were elevated compared to the DHM and S piglets. H1 piglet small intestinal histology was similar (P > 0.05) to that of DHM and S piglets. Additionally, H1 piglets had either the same (P > 0.05) or higher (P < 0.05) amino acids in circulation compared to DHM and S piglets. Recombinant human proteins had either similar (P > 0.05) or lower (P < 0.05) activity compared to the native human proteins when assessing the individual ingredients in the H1 formula. ConclusionH1 formula was noninferior to DHM and S based on growth, small intestinal histology and plasma amino acid endpoints when fed to neonatal piglets. These findings warrant further studies to use the neonatal piglet as a model to evaluate more in-depth outcomes of health and safety for new infant formulas. Lay SummaryA novel piglet study shows a hypoallergenic, next-generation infant formula containing recombinant human milk proteins rivals donor human milk and standard formula for growth, gut health, and nutrient status.
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