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Programming effects of an early life diet containing large phospholipid-coated lipid globules are transient under continuous exposure to a high-fat diet

O. Ronda,B. van de Heijning,A. de Bruin,A. Jurdzinski,F. Kuipers,H. Verkade

Published 2019 in British Journal of Nutrition

ABSTRACT

Abstract Breast-feeding is associated with a lower risk of developing obesity during childhood and adulthood compared with feeding infant milk formula (IMF). Previous studies have shown that an experimental IMF (eIMF; comprising Nuturis®) programmed mouse pups for a lower body weight and fat mass gain in adulthood when challenged with a high-fat diet (HFD) compared with a control IMF (cIMF). Nuturis has a lipid composition and structure more similar to breast milk. Here, the long-term effects were tested of a similar eIMF, but with an adapted lipid composition and a cIMF, on body weight, glucose homoeostasis, liver and adipose tissue. Nutrient composition was similar for the eIMF and cIMF; the lipid fractions comprised approximately 50 % milk fat. C57BL/6JOlaHsd mice were fed cIMF or eIMF from postnatal day (PN) 16–42 followed by an HFD until PN168. Feeding eIMF v. cIMF in early life resulted in a lower body weight (–9 %) and body fat deposition (–14 %) in adulthood (PN105). The effect appeared transient, as from PN126 onwards, after 12 weeks’ HFD, eIMF-fed mice caught up on controls and body and fat weights became comparable between groups. Glucose and energy metabolism were similar between groups. At dissection (PN168), eIMF-fed mice showed larger (+27 %) epididymal fat depots and a lower (–26 %) liver weight without clear morphological aberrations. Our data suggest the size and coating but not the lipid composition of IMF fat globules underlie the programming effect observed. Prolonged exposure to an HFD challenge partly overrules the programming effect of early diet.

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