» Articles » PMID: 32450886

Circadian Changes in the Composition of Human Milk Macronutrients Depending on Pregnancy Duration: a Cross-sectional Study

Overview
Publisher Biomed Central
Date 2020 May 27
PMID 32450886
Citations 13
Authors
Affiliations
Soon will be listed here.
Abstract

Background: The purpose of this study was to evaluate the circadian variation of human milk macronutrients and energy content depending upon pregnancy duration.

Methods: One hundred eighty fresh human milk samples from 45 mothers (27 of preterm and 18 of full-term newborns) were collected on a single day chosen between the 14th to 16th day after delivery. The samples were taken four times per day at 12 PM, 6 PM, 12 AM and 6 AM. Only lactating women, who could not breastfeed their hospitalized newborns and expressed milk by breast pump, were enrolled in the study. Human milk macronutrient composition and energy count were evaluated by mid-infrared spectrophotometry.

Results: Significant differences in macronutrient content were observed between 6 AM and 12 PM for mean protein content (t = - 4.62, df = 44, p < 0.001), for mean fat content (t = - 2.10, df = 44, p = 0.04) and for mean energy content (t = - 2.24, df = 44, p = 0.03); between 6 AM and 6 PM for mean protein content (t = - 2.41, df = 43, p = 0.02), for mean fat content (t = - 3.76, df = 43, p = 0.001) and for mean energy content (t = - 3.85, df = 43, p < 0.001); between 12 PM and 12 AM for mean protein content (Wilcoxon test V = 75.5, p = 0.001), for mean fat content (t = 2.50, df = 44, p = 0.02) and for mean energy content (t = 2.74, df = 44, p = 0.01); between 6 PM and 12 AM for mean protein content (V = 229, p = 0.02), for mean fat content (t = 4.39, df = 43, p < 0.001) and for mean energy content (t = - 4.57, df = 43, p < 0.001). The average content of carbohydrates did not change significantly during the 24 h. The samples of preterm newborns' mothers had more apparent diurnal fluctuations in macronutrient content.

Conclusions: Our study revealed significant diurnal variations in protein and fat in human milk, and these circadian fluctuations were more apparent in the milk of mothers of preterm infants.

Citing Articles

The milk study protocol: A longitudinal, prospective cohort study of the relationship between human milk metabolic hormone concentration, maternal body composition, and early growth and satiety development in Samoan infants aged 1-4 months.

Harries V, Abraham J, Vesi L, Reupena A, Faaselele-Savusa K, Duckham R PLoS One. 2024; 19(5):e0292997.

PMID: 38728264 PMC: 11086876. DOI: 10.1371/journal.pone.0292997.


Untargeted Metabolomic Analysis of Lactation-Stage-Matched Human and Bovine Milk Samples at 2 Weeks Postnatal.

Lemas D, Du X, Dado-Senn B, Xu K, Dobrowolski A, Magalhaes M Nutrients. 2023; 15(17).

PMID: 37686800 PMC: 10490210. DOI: 10.3390/nu15173768.


Circadian Rhythm Does Not Affect the miRNA Cargo of Bovine Raw Milk Extracellular Vesicles.

Saenz-de-Juano M, Silvestrelli G, Ulbrich S Int J Mol Sci. 2023; 24(12).

PMID: 37373358 PMC: 10299634. DOI: 10.3390/ijms241210210.


The contributions of parental lactation on offspring development: It's not udder nonsense!.

Wijenayake S, Martz J, Lapp H, Storm J, Champagne F, Kentner A Horm Behav. 2023; 153:105375.

PMID: 37269591 PMC: 10351876. DOI: 10.1016/j.yhbeh.2023.105375.


Gestational Hypertension and Human Breast Milk Composition in Correlation with the Assessment of Fetal Growth-A Pilot Study.

Sokolowska E, Jassem-Bobowicz J, Drazkowska I, Swiader Z, Domzalska-Popadiuk I Nutrients. 2023; 15(10).

PMID: 37242287 PMC: 10222266. DOI: 10.3390/nu15102404.


References
1.
Amaral Y, Rocha D, Silva L, Soares F, Lopes Moreira M . Do maternal morbidities change the nutritional composition of human milk? A systematic review. Cien Saude Colet. 2019; 24(7):2491-2498. DOI: 10.1590/1413-81232018247.18972017. View

2.
Nommsen L, Lovelady C, Heinig M, Lonnerdal B, Dewey K . Determinants of energy, protein, lipid, and lactose concentrations in human milk during the first 12 mo of lactation: the DARLING Study. Am J Clin Nutr. 1991; 53(2):457-65. DOI: 10.1093/ajcn/53.2.457. View

3.
Zhu M, Yang Z, Ren Y, Duan Y, Gao H, Liu B . Comparison of macronutrient contents in human milk measured using mid-infrared human milk analyser in a field study vs. chemical reference methods. Matern Child Nutr. 2016; 13(1). PMC: 6866206. DOI: 10.1111/mcn.12248. View

4.
Khan S, Hepworth A, Prime D, Lai C, Trengove N, Hartmann P . Variation in fat, lactose, and protein composition in breast milk over 24 hours: associations with infant feeding patterns. J Hum Lact. 2012; 29(1):81-9. DOI: 10.1177/0890334412448841. View

5.
Michaelsen K, Skafte L, Badsberg J, Jorgensen M . Variation in macronutrients in human bank milk: influencing factors and implications for human milk banking. J Pediatr Gastroenterol Nutr. 1990; 11(2):229-39. DOI: 10.1097/00005176-199008000-00013. View