Objective: To track individual mother's macronutrient variability in preterm human milk (HM) over 6 weeks of lactation.
Study Design: This was a prospective, observational study of mother's own milk from women who delivered a very low birth weight infant (<1500 g). A single, random maternal breast milk sample was collected and analyzed weekly for 6 consecutive weeks. Analysis was by mid-infrared spectroscopy.
Results: Twenty women consented to provide at least one milk sample. Fat, protein and energy content varied widely among mothers and by week of lactation. Energy content ranged from 9.5 to 30.4 kcal oz across the study period. Twenty-five percent of all samples had an energy content <17 kcal oz. Protein content ranged from 1.1 to 2.8 g dl in the first week. Sixty-three percent of all samples had a protein content <1.5 g dl. Fat and energy showed trends of increasing concentrations, whereas protein showed the expected decline over time. Lactose showed little variability by woman or by week of lactation.
Conclusion: HM fat and protein content varied widely by individual woman over time. Week-to-week variability in fat and protein can impact growth. The ability to analyze HM is helpful to improve fortification of HM.
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http://dx.doi.org/10.1038/jp.2016.170 | DOI Listing |
JMIR Res Protoc
January 2025
School of Human Nutrition, McGill University, Sainte-Anne-de-Bellevue, QC, Canada.
Background: The 2019 Canada's Food Guide provides universal recommendations to individuals aged ≥2 years. However, the extent to which these recommendations are appropriate for older adults is unknown. Although ideal, conducting a large randomized controlled trial is unrealistic in the short term.
View Article and Find Full Text PDFHypertens Res
January 2025
Department of Precision Nutrition for Dairy Foods, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
The prevalence of hypertension in Japan remains high, owing to the high salt content of the typical Japanese diet. Dairy-based foods may reduce blood pressure and hypertension risk. However, dairy consumption is low in Japan, and the relationships between dairy intake and blood pressure or the mechanisms by which dairy products affect blood pressure are not fully understood.
View Article and Find Full Text PDFCarbohydr Polym
March 2025
State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China. Electronic address:
Human milk oligosaccharides (HMOs) are crucial for promoting neonatal health, with sialylated oligosaccharides, a significant subclass, offering a variety of health benefits such as prebiotic effects, anti-inflammatory and antimicrobial properties, antiviral defense, and cognitive development support. Among these, 3'-sialyllactose (3'-SL) and 6'-sialyllactose (6'-SL) have received "GRAS" status from the U.S.
View Article and Find Full Text PDFCarbohydr Polym
March 2025
College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:
Human milk oligosaccharides (HMOs) are now the principal component of the latest infant formula generation. However, it is challenging to separate and quantify highly heterogeneous isomers when analyzing HMOs. Here, we developed a high-throughput isomer-resolved quantification method for 21 native HMOs based on ultrahigh-performance liquid chromatography-mass spectrometry-multiple reaction monitoring (UPLC-MS-MRM) technology.
View Article and Find Full Text PDFJ Control Release
January 2025
Laboratory for Bioinspired Nano Engineering and Translational Therapeutics, Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel; Russell-Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa 3200003, Israel; Cardiovascular Sciences Department, Houston Methodist Academic Institute, Houston, TX 77030, United States; Neurosurgery Department, Houston Methodist Academic Institute, Houston, TX 77030, United States; Resnick Sustainability Center of Catalysis, Technion-Israel Institute of Technology, Haifa 3200003, Israel; Bruce and Ruth Rappaport Cancer Research Center, Technion-Israel Institute of Technology, Haifa 3200003, Israel. Electronic address:
The intricate interplay between human breast milk, nanoparticles, and macromolecules holds promise for innovative nutritional delivery strategies. Compared to bovine milk and infant formula, this study explores human breast milk's role in modulating intestinal permeability and its impact on nanoparticle and macromolecule transport. Comparative analysis with bovine milk and infant formula reveals significant elevations in permeability with human breast milk, accompanied by a decrease in transepithelial electrical resistance, suggesting enhanced paracellular transport.
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