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Open AccessArticle

Breast Milk Supply of MicroRNA Associated with Leptin and Adiponectin Is Affected by Maternal Overweight/Obesity and Influences Infancy BMI

by Rocío Zamanillo 1,2, Juana Sánchez 1,3,4, Francisca Serra 1,3,4,* and Andreu Palou 1,3,4
1
Laboratory of Molecular Biology, Nutrition and Biotechnology (Group of Nutrigenomics and Obesity), University of the Balearic Islands, 07122 Palma, Spain
2
Department of Health, Valencian International University (VIU), 46002 Valencia, Spain
3
CIBER de Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
4
Instituto de Investigación Sanitaria Illes Balears (IdISBa), 07120 Palma, Spain
*
Author to whom correspondence should be addressed.
Nutrients 2019, 11(11), 2589; https://doi.org/10.3390/nu11112589
Received: 30 July 2019 / Revised: 4 October 2019 / Accepted: 7 October 2019 / Published: 28 October 2019
(This article belongs to the Special Issue Dietary Fat and Human Health)
Breast milk constitutes a dietary source of leptin, adiponectin and microRNAs (miRNAs) for newborns. Expression of miRNAs previously associated with maternal obesity, leptin or adiponectin function were assessed and their impact on infant weight analyzed. Milk samples were collected (at month 1, 2, and 3) from a cohort of 59 healthy lactating mothers (38 normal-weight and 21 overweight/obese (BMI ≥ 25)), and infant growth was followed up to 2 years of age. Thirteen miRNAs, leptin and adiponectin were determined in milk. Leptin, adiponectin and miRNA showed a decrease over time of lactation in normal-weight mothers that was altered in overweight/obesity. Furthermore, negative correlations were observed in normal-weight mothers between the expression of miRNAs in milk and the concentration of leptin or adiponectin, but were absent in overweight/obesity. Moreover, miRNAs negatively correlated with infant BMI only in normal-weight mothers (miR-103, miR-17, miR-181a, miR-222, miR-let7c and miR-146b). Interestingly, target genes of milk miRNAs differently regulated in overweight/obesity could be related to neurodevelopmental processes. In conclusion, a set of miRNAs present in breast milk, in close conjunction with leptin and adiponectin, are natural bioactive compounds with the potential to modulate infant growth and brain development, an interplay that is disturbed in the case of maternal overweight/obesity. View Full-Text
Keywords: breast milk microRNA; maternal obesity; leptin; adiponectin; infant growth breast milk microRNA; maternal obesity; leptin; adiponectin; infant growth
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MDPI and ACS Style

Zamanillo, R.; Sánchez, J.; Serra, F.; Palou, A. Breast Milk Supply of MicroRNA Associated with Leptin and Adiponectin Is Affected by Maternal Overweight/Obesity and Influences Infancy BMI. Nutrients 2019, 11, 2589.

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