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Medina Poeliniz C, Hoban R, Schoeny ME, Engstrom JL, Patel AL, Meier P. Prepregnancy Body Mass Index Is Associated with Time-Dependent Changes in Secretory Activation Measures During the First 7 Days Postpartum in Breast Pump-dependent Mothers of Premature Infants. Breastfeed Med 2022; 17:173-181. [PMID: 34919412 DOI: 10.1089/bfm.2021.0167] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Background: Little is known about the biology of secretory activation (SA) in overweight and obese (OW/OB) mothers who are breast pump dependent with a premature infant in the neonatal intensive care unit. Objective: To compare time-dependent changes in daily pumped milk volume, maternal milk sodium (Na) concentration, and Na-to-potassium (K) ratios (Na:K) in the first 14 days postpartum in breast pump-dependent mothers with prepregnancy body mass index (BMI) <27 and BMI ≥27 kg/m2. Design/Methods: This secondary analysis for 39 subjects, 44% (n = 17) with prepregnancy BMI <27 and 56% (n = 22) with BMI ≥27, included transformed data of outcome measures, chi-square, t-tests, and growth curve models. Results: For days 1-7, daily pumped milk volume increased significantly more rapidly for mothers with BMI <27 (65.82 mL/d) versus BMI ≥27 (33.08 mL/d), but the daily rate of change in pumped milk volume during days 8-14 was not statistically different. Daily milk Na concentration decreased significantly faster in BMI <27 (-3.93 mM/d) versus BMI ≥27 (-2.00 mM/day) during days 1-7, but was not significantly different for days 8-14. No statistical differences were noted for Na:K ratio for either time period. Conclusion: These data add biologic evidence to previous research, suggesting delayed or impaired SA in OW/OB mothers, and suggest that the window of opportunity for research and clinical interventions is days 1-7 postpartum in this population.
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Affiliation(s)
| | - Rebecca Hoban
- Division of Neonatology, Department of Pediatrics, Rush University Medical Center, Chicago, Illinois, USA.,Division of Neonatology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada
| | - Michael E Schoeny
- College of Nursing, Rush University Medical Center, Chicago, Illinois, USA
| | - Janet L Engstrom
- Department of Women and Children's Nursing, Rush University Medical Center, Chicago, Illinois, USA
| | - Aloka L Patel
- Division of Neonatology, Department of Pediatrics, Rush University Medical Center, Chicago, Illinois, USA
| | - Paula Meier
- Division of Neonatology, Department of Pediatrics, Rush University Medical Center, Chicago, Illinois, USA
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Sureshchandra S, Marshall NE, Mendoza N, Jankeel A, Zulu MZ, Messaoudi I. Functional and genomic adaptations of blood monocytes to pregravid obesity during pregnancy. iScience 2021; 24:102690. [PMID: 34195568 PMCID: PMC8233196 DOI: 10.1016/j.isci.2021.102690] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 04/27/2021] [Accepted: 05/26/2021] [Indexed: 12/23/2022] Open
Abstract
Pregravid obesity is associated with several adverse maternal health outcomes, such as increased risk of infection, suggesting an altered immunological state. However, the mechanisms by which obesity disrupts the pregnancy “immune clock” are still unknown. Here, we profiled circulating immune mediators, immune cell subset frequencies, and peripheral immune responses during the first and third trimesters of pregnancy in lean and obese mothers. While both Th1 and Th2 cytokines were elevated with pregnancy regardless of BMI, obese subjects had dysregulated myeloid factors in circulation at term. Pregnancy in lean subjects was associated with enhanced monocyte activation, augmented chromatin accessibility at inflammatory loci, and heightened responses to LPS. Pregravid obesity disrupted this trajectory, resulting in a lack of transcriptional, epigenetic, and metabolic changes strongly suggesting a skewing toward innate immune tolerance. These findings provide novel insight into the increased susceptibility to infections in women with obesity during pregnancy and following cesarean delivery. Pregnancy is associated with activation and enhanced responses of monocytes Heightened monocyte response is associated with epigenetic adaptions Pregravid obesity leads to a state akin to LPS tolerance in monocytes Pregravid obesity is associated with a lack of epigenetic and metabolic plasticity
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Affiliation(s)
- Suhas Sureshchandra
- Department of Molecular Biology and Biochemistry, University of California, 2400 Biological Sciences III, Irvine, CA 92697, USA.,Institute for Immunology, University of California, Irvine, CA 92697, USA
| | - Nicole E Marshall
- Maternal-Fetal Medicine, Oregon Health and Science University, Portland, OR 97239, USA
| | - Norma Mendoza
- Department of Molecular Biology and Biochemistry, University of California, 2400 Biological Sciences III, Irvine, CA 92697, USA
| | - Allen Jankeel
- Department of Molecular Biology and Biochemistry, University of California, 2400 Biological Sciences III, Irvine, CA 92697, USA
| | - Michael Z Zulu
- Department of Molecular Biology and Biochemistry, University of California, 2400 Biological Sciences III, Irvine, CA 92697, USA.,Institute for Immunology, University of California, Irvine, CA 92697, USA
| | - Ilhem Messaoudi
- Department of Molecular Biology and Biochemistry, University of California, 2400 Biological Sciences III, Irvine, CA 92697, USA.,Institute for Immunology, University of California, Irvine, CA 92697, USA.,Center for Virus Research, University of California, Irvine, CA 92697, USA
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3
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Betts CB, Quackenbush A, Anderson W, Marshall NE, Schedin PJ. Mucosal Immunity and Liver Metabolism in the Complex Condition of Lactation Insufficiency. J Hum Lact 2020; 36:582-590. [PMID: 32795211 DOI: 10.1177/0890334420947656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Lactation insufficiency is variously defined and includes the inability to produce milk, not producing enough milk to exclusively meet infant growth requirements, and pathological interruption of lactation (e.g., mastitis). Of women with intent-to-breastfeed, lactation insufficiency has been estimated to affect 38%-44% of newly postpartum women, likely contributing to the nearly 60% of infants that are not breastfed according to the World Health Organization's guidelines. To date, research and clinical practice aimed at improving feeding outcomes have focused on hospital lactation support and education, with laudable results. However, researchers' reports of recent rodent studies concerning fundamental lactation biology have suggested that the underlying pathologies of lactation insufficiency may be more nuanced than is currently appreciated. In this article, we identify mucosal biology of the breast and lactation-specific liver biology as two under-researched aspects of lactation physiology. Specifically, we argue that further scientific inquiry into reproductive state-dependent regulation of immunity in the human breast will reveal insights into novel immune based requirements for healthy lactation. Additionally, our synthesis of the literature supports the hypothesis that the liver is an essential player in lactation-highlighting the potential that pathologies of the liver may also be associated with lactation insufficiency. More research into these biologic underpinnings of lactation is anticipated to provide new avenues to understand and treat lactation insufficiency.
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Affiliation(s)
- Courtney B Betts
- 89020 Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, OR, USA
| | - Alexandra Quackenbush
- 89020 Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, OR, USA
| | - Weston Anderson
- 89020 Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, OR, USA
| | - Nicole E Marshall
- Obstetrics and Gynecology, School of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Pepper J Schedin
- 89020 Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, OR, USA.,University of Colorado Cancer Center, Aurora, CO, USA.,Knight Cancer Institute, Oregon Health and Science University, Portland, OR, USA
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