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Belfort MB, Stellwagen L, North K, Unger S, O'Connor DL, Perrin MT. Deciphering macronutrient information about human milk. J Perinatol 2024; 44:1377-1381. [PMID: 38879586 PMCID: PMC11379624 DOI: 10.1038/s41372-024-02029-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 06/05/2024] [Accepted: 06/06/2024] [Indexed: 09/08/2024]
Abstract
Clinicians caring for small, vulnerable newborns increasingly have access to specific nutritional information about human milk through point-of-care analyzers and labeled products. It is critical for clinicians to recognize that there is considerable variability in how human milk nutritional data are derived and reported, which impacts the interpretation of nutritional values, comparison of nutritional data between products, and ultimately the ability to deliver optimal nutritional care. This article distills key issues that will enable clinicians to interpret human milk nutritional labels/analysis more effectively, ultimately allowing them to make better decisions about dietary strategies. We aim to empower clinicians to ask questions about milk sampling techniques, reported nutrient values, analysis techniques, and milk bank pooling practices. This knowledge can put human milk nutrient values in context, improve clinical care, and help to drive more rigorous research for exploring the impact of human milk feeding on infant outcomes.
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Affiliation(s)
- Mandy B Belfort
- Department of Pediatrics, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Lisa Stellwagen
- Department of Pediatrics, University of California, San Diego, School of Medicine, San Diego, CA, USA
| | - Krysten North
- Department of Pediatrics, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Sharon Unger
- IWK Health, and Dalhousie University, Halifax, NS, Canada
- Department of Nutritional Sciences, University of Toronto, and the Department of Pediatrics, Sinai Health, Toronto, ON, Canada
| | - Deborah L O'Connor
- Department of Nutritional Sciences, University of Toronto, and the Department of Pediatrics, Sinai Health, Toronto, ON, Canada
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Maryanne T Perrin
- Department of Nutrition, University of North Carolina Greensboro, Greensboro, NC, USA.
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Schinkel ER, Nelson ER, Kim JH, Perrin MT, Dyer R, Elango R, Bode L, Dallas DC, Lueangsakulthai J, Briere CE, Taylor SN. Point-of-care human milk concentration by passive osmosis: comprehensive analysis of fresh human milk samples. J Perinatol 2024:10.1038/s41372-024-01988-2. [PMID: 38760580 DOI: 10.1038/s41372-024-01988-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/18/2024] [Accepted: 04/24/2024] [Indexed: 05/19/2024]
Abstract
OBJECTIVE Preterm infants need enrichment of human milk (HM) for optimal growth. This study evaluated a novel, point-of-care human milk concentration (HMC) process for water removal from fresh HM samples by passive osmotic concentration. STUDY DESIGN Nineteen fresh HM samples were concentrated by incubation with the HMC devices for 3 h at 4 °C. Pre- and post-concentration HM samples were compared by HM properties for: pH, osmolality, macronutrients, enzyme activity, bioactive, and total cell viability. RESULTS Passive osmotic concentration reduced HM volume by an average of 16.3% ± 3.8% without a significant effect on pH or cell viability. Ten of the 41 HM components did not differ significantly (p > 0.05) between pre- and post-concentration samples. Twenty-three increased within the expected range by volume reduction. Six increased more than expected, two less than expected, and none decreased significantly. CONCLUSION Passive osmotic concentration of fresh HM can concentrate HM components by selective removal of water. HM osmolality and pH remained within neonatal feeding parameters.
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Affiliation(s)
- Elizabeth R Schinkel
- Mother's Milk is Best Inc., R&D, 100 Business Park Drive, Unit #5, Tyngsboro, MA, 01879, USA.
| | - Elizabeth R Nelson
- Mother's Milk is Best Inc., R&D, 100 Business Park Drive, Unit #5, Tyngsboro, MA, 01879, USA.
| | - Jae H Kim
- Perinatal Institute, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA
| | - Maryanne T Perrin
- Department of Nutrition, University of North Carolina Greensboro, Greensboro, NC, 27412, USA
| | - Roger Dyer
- Analytical Core for Metabolomics and Nutrition, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, V5Z 4H4, Canada
| | - Rajavel Elango
- Analytical Core for Metabolomics and Nutrition, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, V5Z 4H4, Canada
- Department of Pediatrics, University of British Columbia, Vancouver, BC, V6H, 3V4, Canada
| | - Lars Bode
- Bode Lab, Department of Pediatrics, School of Medicine, University of California, San Diego, San Diego, CA, 92093, USA
| | - David C Dallas
- Dallas Lab, Nutrition Program, College of Health, Oregon State University, Corvallis, OR, 97331, USA
| | - Jiraporn Lueangsakulthai
- Dallas Lab, Nutrition Program, College of Health, Oregon State University, Corvallis, OR, 97331, USA
| | - Carrie-Ellen Briere
- Briere Lab, Elaine Marieb College of Nursing, University of Massachusetts Amherst, Amherst, MA, 01003, USA
- Institute for Nursing Research and Evidence-Based Practice, Connecticut Children's, Hartford, CT, 06106, US
| | - Sarah N Taylor
- Division of Neonatology, Yale School of Medicine, New Haven, CT, 06520, USA
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Brockway MM, Daniel AI, Reyes SM, Granger M, McDermid JM, Chan D, Refvik R, Sidhu KK, Musse S, Patel PP, Monnin C, Lotoski L, Geddes D, Jehan F, Kolsteren P, Allen LH, Hampel D, Eriksen KG, Rodriguez N, Azad MB. Human Milk Macronutrients and Child Growth and Body Composition in the First Two Years: A Systematic Review. Adv Nutr 2024; 15:100149. [PMID: 37981047 PMCID: PMC10831902 DOI: 10.1016/j.advnut.2023.100149] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 10/16/2023] [Accepted: 11/14/2023] [Indexed: 11/21/2023] Open
Abstract
Among exclusively breastfed infants, human milk (HM) provides complete nutrition in the first mo of life and remains an important energy source as long as breastfeeding continues. Consisting of digestible carbohydrates, proteins, and amino acids, as well as fats and fatty acids, macronutrients in human milk have been well studied; however, many aspects related to their relationship to growth in early life are still not well understood. We systematically searched Medline, EMBASE, the Cochrane Library, Scopus, and Web of Science to synthesize evidence published between 1980 and 2022 on HM components and anthropometry through 2 y of age among term-born healthy infants. From 9992 abstracts screened, 57 articles reporting observations from 5979 dyads were included and categorized based on their reporting of HM macronutrients and infant growth. There was substantial heterogeneity in anthropometric outcome measurement, milk collection timelines, and HM sampling strategies; thus, meta-analysis was not possible. In general, digestible carbohydrates were positively associated with infant weight outcomes. Protein was positively associated with infant length, but no associations were reported for infant weight. Finally, HM fat was not consistently associated with any infant growth metrics, though various associations were reported in single studies. Fatty acid intakes were generally positively associated with head circumference, except for docosahexaenoic acid. Our synthesis of the literature was limited by differences in milk collection strategies, heterogeneity in anthropometric outcomes and analytical methodologies, and by insufficient reporting of results. Moving forward, HM researchers should accurately record and account for breastfeeding exclusivity, use consistent sampling protocols that account for the temporal variation in HM macronutrients, and use reliable, sensitive, and accurate techniques for HM macronutrient analysis.
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Affiliation(s)
- Meredith Merilee Brockway
- Manitoba Interdisciplinary Lactation Centre (MILC), Children's Hospital Research Institute of Manitoba, University of Manitoba, Canada; Department of Pediatrics and Child Health, University of Manitoba, Canada; Faculty of Nursing, University of Calgary, Canada
| | - Allison I Daniel
- Centre for Global Child Health, Hospital for Sick Children, Canada; Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Canada
| | - Sarah M Reyes
- Manitoba Interdisciplinary Lactation Centre (MILC), Children's Hospital Research Institute of Manitoba, University of Manitoba, Canada
| | - Matthew Granger
- Department of Food and Human Nutritional Sciences, University of Manitoba, Canada
| | | | - Deborah Chan
- Department of Pediatrics and Child Health, University of Manitoba, Canada; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Canada
| | - Rebecca Refvik
- Department of Food and Human Nutritional Sciences, University of Manitoba, Canada
| | - Karanbir K Sidhu
- Department of Food and Human Nutritional Sciences, University of Manitoba, Canada
| | - Suad Musse
- Department of Food and Human Nutritional Sciences, University of Manitoba, Canada
| | - Pooja P Patel
- Department of Public Health and Community Medicine, Tufts University School of Medicine, USA
| | - Caroline Monnin
- Neil John Maclean Health Sciences Library, University of Manitoba, Canada
| | - Larisa Lotoski
- Department of Pediatrics and Child Health, University of Manitoba, Canada
| | - Donna Geddes
- School of Molecular Sciences, The University of Western Australia, Australia
| | - Fyezah Jehan
- Department of Pediatrics, Aga Khan University, Pakistan
| | - Patrick Kolsteren
- Department of Food Safety and Food Quality, Ghent University, Belgium
| | - Lindsay H Allen
- Western Human Nutrition Research Center, Agriculture Research Service, United States Department of Agriculture, USA; Department of Nutrition, University of California, Davis, USA
| | - Daniela Hampel
- Western Human Nutrition Research Center, Agriculture Research Service, United States Department of Agriculture, USA; Department of Nutrition, University of California, Davis, USA
| | - Kamilla G Eriksen
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Denmark
| | - Natalie Rodriguez
- Manitoba Interdisciplinary Lactation Centre (MILC), Children's Hospital Research Institute of Manitoba, University of Manitoba, Canada; Department of Pediatrics and Child Health, University of Manitoba, Canada
| | - Meghan B Azad
- Manitoba Interdisciplinary Lactation Centre (MILC), Children's Hospital Research Institute of Manitoba, University of Manitoba, Canada; Department of Pediatrics and Child Health, University of Manitoba, Canada.
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McCune S, Perrin M. The Effects of Refrigerated Storage of Donor Human Milk with Limited Bacterial Presence After Holder Pasteurization on Nutrient Concentration and Bacterial Growth. Breastfeed Med 2023. [PMID: 37367215 DOI: 10.1089/bfm.2023.0084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Background: The Human Milk Banking Association of North America (HMBANA) sets the purity and quality standards for donor human milk (DHM) in the United States, which includes zero bacterial presence after Holder pasteurization. This study aimed to determine if nutrient and bacterial composition of DHM with limited bacterial presence after pasteurization change over 4 days of refrigerated storage. Methods: Twenty-five unique samples of DHM with limited bacterial growth postpasteurization were collected from two HMBANA milk banks. Infant formula was used as a comparison. Samples were stored in the refrigerator and a portion of milk was removed at 24-hour intervals beginning at hour 0 to 96 for analysis. Aerobic bacteria, protein, lactose, and immunoglobulin A (IgA) content were measured. Longitudinal changes between 0 and 96 hours were analyzed using repeated measures analysis of variance and mixed models test. p < 0.05 was deemed significant. Results: There was no significant difference in lactose, protein, bacteria, or IgA content over storage duration (p = 0.649, p = 0.690, and p = 0.385, p = 0.805, respectively). Total aerobic bacteria were less than 102 colony-forming units (CFUs) in 81% of the time points tested for DHM samples. Total aerobic bacteria were too many to count (>300 CFUs) in the infant formula sample at all time points. Conclusion: In periods of high demand for DHM, DHM with low bacteria growth postpasteurization may be an option as a supplemental food for the growing number of healthy infants who receive DHM. Future studies should investigate the bacterial strains in this milk.
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Affiliation(s)
- Sydney McCune
- Department of Nutrition, University of North Carolina Greensboro, Greensboro, North Carolina, USA
| | - Maryanne Perrin
- Department of Nutrition, University of North Carolina Greensboro, Greensboro, North Carolina, USA
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Protein Enrichment of Donor Breast Milk and Impact on Growth in Very Low Birth Weight Infants. Nutrients 2021; 13:nu13082869. [PMID: 34445027 PMCID: PMC8401419 DOI: 10.3390/nu13082869] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/16/2021] [Accepted: 08/18/2021] [Indexed: 11/27/2022] Open
Abstract
Protein content is often inadequate in donor breast milk (DBM), resulting in poor growth. The use of protein-enriched target-pooled DBM (DBM+) has not been examined. We compared three cohorts of very low birth weight (VLBW) infants, born ≤ 1500 g: DBM cohort receiving > 1-week target-pooled DBM (20 kcal/oz), MBM cohort receiving ≤ 1-week DBM, and DBM+ cohort receiving > 1-week DBM+. Infants followed a standardized feeding regimen with additional fortification per clinical discretion. Growth velocities and z-scores were calculated for the first 4 weeks (n = 69 for DBM, 71 for MBM, 70 for DBM+) and at 36 weeks post-menstrual age (n = 58, 64, 59, respectively). In total, 60.8% MBM infants received fortification >24 kcal/oz in the first 30 days vs. 78.3% DBM and 77.1% DBM+. Adjusting for SGA, length velocity was greater with DBM+ than DBM in week 1. Average weight velocity and z-score change were improved with MBM compared to DBM and DBM+, but length z-score decreased similarly across all groups. Incidences of NEC and feeding intolerance were unchanged between eras. Thus, baseline protein enrichment appears safe in stable VLBW infants. Weight gain is greatest with MBM. Linear growth comparable to MBM is achievable with DBM+, though the overall length trajectory remains suboptimal.
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