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Laval N, Paquette M, Talsmat H, Marandyuk B, Wintermark P, Birca A, Pinchefsky EF, Tremblay S. Exposure to Maternal Diabetes during Pregnancy Is Associated with Aggravated Short-Term Neonatal and Neurological Outcomes following Perinatal Hypoxic-Ischemic Encephalopathy. Am J Perinatol 2024; 41:e1581-e1590. [PMID: 36918161 DOI: 10.1055/a-2053-7904] [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] [Indexed: 03/16/2023]
Abstract
OBJECTIVE Infants of diabetic mothers (IDM) are at higher risk of perinatal morbidities and glycemic instability, but the impact of maternal diabetes on neonatal and neurological short-term outcomes of neonates with hypoxic-ischemic encephalopathy (HIE) remains poorly described. Our objective was to determine the impact of maternal diabetes on neonatal and neurological short-term outcomes following neonatal HIE. STUDY DESIGN This was a retrospective single-center study including 102 term neonates with HIE who received therapeutic hypothermia (TH) treatment between 2013 and 2020. Multiple regression analysis was used to assess the relationship between the presence of maternal diabetes and short-term outcomes. RESULTS Neonates with HIE and maternal diabetes exposure had a significantly lower gestational age at birth (38.6 vs. 39.7 weeks of gestation, p = 0.005) and a significantly higher mean birth weight (3,588 ± 752 vs. 3,214 ± 514 g, p = 0.012). IDM with HIE were ventilated for longer duration (8 vs. 4 days, p = 0.0047) and had a longer neonatal intensive care unit (NICU) stay (18 vs. 11 days, p = 0.0483) as well as took longer time to reach full oral feed (15 vs. 7 days, p = 0.0432) compared with neonates of nondiabetic mother. Maternal diabetes was also associated with an increased risk of death or abnormal neurological examination at discharge in neonates with HIE (odds ratio: 6.41 [1.54-26.32]). CONCLUSION In neonates with HIE, maternal diabetes is associated with an increased risk of death or short-term neonatal morbidities, such as longer duration of ventilation, prolonged neonatal stay, greater need for tube feeding, and being discharged with an abnormal neurological examination. Strategies to prevent, reduce, or better control maternal diabetes during pregnancy should be prioritized to minimize complications after perinatal asphyxia. KEY POINTS · Maternal DB is associated with unfavorable outcomes.. · IDM have longer ventilatory support and tube feeding.. · IDM have higher risk of abnormal neurological examination..
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Affiliation(s)
- Nancy Laval
- CHU Ste-Justine Research Center, Montréal, QC, Canada
- Department of Neonatology, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Mariane Paquette
- CHU Ste-Justine Research Center, Montréal, QC, Canada
- Department of Neonatology, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Hamza Talsmat
- CHU Ste-Justine Research Center, Montréal, QC, Canada
| | | | - Pia Wintermark
- Department of Pediatrics, Montréal Children's Hospital, Montréal, QC, Canada
| | - Ala Birca
- CHU Ste-Justine Research Center, Montréal, QC, Canada
- Division of Neurology, Department of Neurosciences and Paediatrics, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Elana F Pinchefsky
- CHU Ste-Justine Research Center, Montréal, QC, Canada
- Division of Neurology, Department of Neurosciences and Paediatrics, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Sophie Tremblay
- CHU Ste-Justine Research Center, Montréal, QC, Canada
- Department of Neonatology, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
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Persson M, Tedroff K, Yin W, Andersson Franko M, Sandin S. Maternal type 1 diabetes, preterm birth, and risk of intellectual disability in the offspring: A nation-wide study in Sweden. Eur Psychiatry 2024; 67:e11. [PMID: 38251044 DOI: 10.1192/j.eurpsy.2024.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2024] Open
Abstract
OBJECTIVE There are few data on long-term neurological or cognitive outcomes in the offspring of mothers with type 1 diabetes (T1D). The aims of this study were to examine if maternal T1D increases the risk of intellectual disability (ID) in the offspring, estimate the amount of mediation through preterm birth, and examine if the association was modified by maternal glycated hemoglobin (HbA1c). DESIGN Population-based cohort study using population-based data from several national registries in Sweden. SETTING AND PARTICIPANTS All offspring born alive in Sweden between the years 1998 and 2015. MAIN OUTCOME MEASURE The risk of ID was estimated through hazard ratios with 95% confidence intervals (HR, 95% CI) from Cox proportional hazard models, adjusting for potential confounding. Risks were also assessed in mediation analyses and in subgroups of term/preterm births, in relation to maternal HbA1c and by severity of ID. RESULTS In total, 1,406,441 offspring were included. In this cohort, 7,794 (0.57%) offspring were born to mothers with T1D. The risk of ID was increased in offspring of mothers with T1D (HR; 1.77, 1.43-2.20), of which 47% (95% CI: 34-100) was mediated through preterm birth. The HRs were not modified by HbA1c. CONCLUSION T1D in pregnancy is associated with moderately increased risks of ID in the offspring. The risk is largely mediated by preterm birth, in particular for moderate/severe cases of ID. There was no support for risk-modification by maternal HbA1c.
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Affiliation(s)
- Martina Persson
- Department of Clinical Science and Education, Division of Pediatrics, Karolinska Institutet, Stockholm, Sweden
- Sachsska Children's and Youth Hospital, Stockholm, Sweden
| | - Kristina Tedroff
- Neuropediatric Unit, Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Karolinska University Hospital, Stockholm, Sweden
| | - Weiyao Yin
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Mikael Andersson Franko
- Department of Clinical Science and Education, Division of Pediatrics, Karolinska Institutet, Stockholm, Sweden
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Sven Sandin
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Seaver Autism Center for Research and Treatment at Mount Sinai, New York, NY, USA
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Leith WM, Zeegers MP, Freeman MD. A predictive model for perinatal hypoxic ischemic encephalopathy using linked maternal and neonatal hospital data. Ann Epidemiol 2024; 89:29-36. [PMID: 38042440 DOI: 10.1016/j.annepidem.2023.11.011] [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: 04/20/2023] [Revised: 11/26/2023] [Accepted: 11/29/2023] [Indexed: 12/04/2023]
Abstract
PURPOSE To build an evidence-based model to estimate case-specific risk of perinatal hypoxic ischemic encephalopathy. METHODS A retrospective, cross-sectional study of all births in Hawaii, Michigan, and New Jersey between 2010 and 2015, using linked maternal labor/delivery and neonatal birth records. Stepwise logistic regression and competitive Akaike information criterion were used to identify the most parsimonious model. Predictive ability of the model was measured with bootstrapped optimism-adjusted area under the ROC curve. RESULTS Among 836,216 births there were 376 (0.45 per 1000) cases of hypoxic ischemic encephalopathy. The final model included 28 variables, 24 associated with increased risk, and 4 that were protective. The optimism-adjusted area under the ROC curve was 0.84. Estimated risk in the study population ranged from 1 in ∼323,000 to 1 in 2.5. The final model confirmed known risk factors (e.g., sentinel events and shoulder dystocia) and identified novel risk factors, such as maternal race and insurance status. CONCLUSION Our study shows that risk of perinatal hypoxic ischemic encephalopathy injury can be estimated with high confidence. Our model fills a notable gap in the study of hypoxic ischemic encephalopathy prevention: the estimation of risk, particularly in the United States population which is unique with respect to racial and socioeconomic disparities.
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Affiliation(s)
- Wendy M Leith
- Maastricht University, Care and Primary Healthcare Research Institute, Faculty of Health, Medicine, and Life Sciences, P.O. Box 616 6200 MD, Maastricht, the Netherlands.
| | - Maurice P Zeegers
- Maastricht University, Care and Primary Healthcare Research Institute, Faculty of Health, Medicine, and Life Sciences, P.O. Box 616 6200 MD, Maastricht, the Netherlands
| | - Michael D Freeman
- Maastricht University, Care and Primary Healthcare Research Institute, Faculty of Health, Medicine, and Life Sciences, P.O. Box 616 6200 MD, Maastricht, the Netherlands
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Kalter HD, Koffi AK, Perin J, Kamwe MA, Black RE. Maternal interventions to decrease stillbirths and neonatal mortality in Tanzania: evidence from the 2017-18 cross-sectional Tanzania verbal and social autopsy study. BMC Pregnancy Childbirth 2023; 23:849. [PMID: 38082404 PMCID: PMC10714492 DOI: 10.1186/s12884-023-06099-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 10/31/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Reduction of Tanzania's neonatal mortality rate has lagged behind that for all under-fives, and perinatal mortality has remained stagnant over the past two decades. We conducted a national verbal and social autopsy (VASA) study to estimate the causes and social determinants of stillbirths and neonatal deaths with the aim of identifying relevant health care and social interventions. METHODS A VASA interview was conducted of all stillbirths and neonatal deaths in the prior 5 years identified by the 2015-16 Tanzania Demographic and Health Survey. We evaluated associations of maternal complications with antepartum and intrapartum stillbirth and leading causes of neonatal death; conducted descriptive analyses of antenatal (ANC) and delivery care and mothers' careseeking for complications; and developed logistic regression models to examine factors associated with delivery place and mode. RESULTS There were 204 stillbirths, with 185 able to be classified as antepartum (88 [47.5%]) or intrapartum (97 [52.5%]), and 228 neonatal deaths. Women with an intrapartum stillbirth were 6.5% (adjusted odds ratio (aOR) = 1.065, 95% confidence interval (CI) 1.002, 1.132) more likely to have a C-section for every additional hour before delivery after reaching the birth attendant. Antepartum hemorrhage (APH), maternal anemia, and premature rupture of membranes (PROM) were significantly positively associated with early neonatal mortality due to preterm delivery, intrapartum-related events and serious infection, respectively. While half to two-thirds of mothers made four or more ANC visits (ANC4+), a third or fewer received quality ANC (Q-ANC). Women with a complication were more likely to deliver at hospital only if they received Q-ANC (neonates: aOR = 4.5, 95% CI 1.6, 12.3) or ANC4+ (stillbirths: aOR = 11.8, 95% CI 3.6, 38.0). Nevertheless, urban residence was the strongest predictor of hospital delivery. CONCLUSIONS While Q-ANC and ANC4 + boosted hospital delivery among women with a complication, attendance was low and the quality of care is critical. Quality improvement efforts in urban and rural areas should focus on early detection and management of APH, maternal anemia, PROM, and prolonged labor, and on newborn resuscitation.
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Affiliation(s)
- Henry D Kalter
- Department of International Health, Institute for International Programs, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America.
| | - Alain K Koffi
- Department of International Health, Health Systems, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Jamie Perin
- Department of International Health, Institute for International Programs, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Mlemba A Kamwe
- National Bureau of Statistics, Dodoma, United Republic of Tanzania
| | - Robert E Black
- Department of International Health, Institute for International Programs, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
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Chan ES, Chadha R, de Koning L. Maternal Hemoglobin A1c in the Third-Trimester May Underestimate Maternal Hyperglycemia and Its Impact on Offspring in Perinatal Demise Associated With Gestational Diabetes Mellitus: An Autopsy Case Series. Pediatr Dev Pathol 2023; 26:472-481. [PMID: 37672690 PMCID: PMC10685682 DOI: 10.1177/10935266231194697] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
INTRODUCTION Gestational diabetes mellitus (GDM) is a common metabolic disorder linked to adverse pregnancy outcomes. Recent research indicates that HbA1c is reliable in detecting maternal glycemia during the first trimester but may underestimate glucose intolerance in the late second to third trimesters. Therefore, it is reasonable to hypothesize that mothers with GDM, despite apparently normal HbA1c levels in the third trimester, may give birth to infants displaying characteristic features often seen in infants of diabetic mothers with suboptimal glycemic control. This study aimed to describe a case series of autopsy cases involving stillborn or deceased neonates delivered in the third trimester to mothers diagnosed with GDM and having normal HbA1c levels at or around the time of delivery. The primary focus was on identifying and documenting the characteristic features commonly associated with "infants of diabetic mothers" with suboptimal glycemic control in this series of cases. MATERIALS AND METHODS We conducted a retrospective review of autopsy reports from our institution spanning 7.5 years. The study included cases that met the following criteria: (1) stillborn or infants who died in the early neonatal period, delivered in the third trimester; (2) mothers diagnosed with GDM; (3) normal maternal HbA1c levels of ≤6.1% at or around the time of delivery; (4) birthweight or femoral length exceeding the 90th percentile for gestational age; and (5) absence of genetic aberrations. We also examined these cases for other characteristic features associated with "infants of diabetic mothers." RESULTS Ten autopsy cases met our inclusion criteria, including 9 stillbirths and 1 neonatal death. Gestational age at delivery ranged from 32 to 39 weeks (mean: 35.7 weeks). Femoral length exceeded the 90th percentile in all cases, and 6 cases had birthweights above the 90th percentile. Puffy facies were observed in 6 cases. Among the 9 cases with complete autopsies including internal examination, 6 exhibited excess adipose tissue, 4 had cardiomegaly, and 3 showed pancreatic islet hyperplasia. Hypoxic-ischemic encephalopathy was detected in 7 cases. No structural abnormalities were noted. DISCUSSION Our findings demonstrated that fetuses and neonates born to mothers with apparently normal HbA1c levels in the third trimester could still display characteristic features commonly observed in infants of diabetic mothers with poor glycemic control, also known as "infants of diabetic mothers." This study underscores the potential of third-trimester maternal HbA1c measurements to underestimate maternal glycemia and its consequential impact on fetal development, as well as the subsequent manifestation of features of "infants of diabetic mothers."
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Affiliation(s)
- Elaine S Chan
- Department of Pathology and Laboratory Medicine, University of Calgary Cumming School of Medicine, Calgary, AB, Canada
- Alberta Children’s Hospital, Calgary, AB, Canada
- Alberta Precision Laboratories, Calgary, AB, Canada
| | - Rati Chadha
- Department of Obstetrics and Gynaecology, University of Calgary Cumming School of Medicine, Calgary, AB, Canada
| | - Lawrence de Koning
- Department of Pathology and Laboratory Medicine, University of Calgary Cumming School of Medicine, Calgary, AB, Canada
- Alberta Children’s Hospital, Calgary, AB, Canada
- Alberta Precision Laboratories, Calgary, AB, Canada
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Dancy M, Newberry DM. Call for a More Specific Diagnosis of Infant of a Diabetic Mother to Optimize Neonatal Care. J Obstet Gynecol Neonatal Nurs 2023; 52:276-285. [PMID: 37277098 DOI: 10.1016/j.jogn.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 06/07/2023] Open
Abstract
Hyperglycemia is the diagnostic feature of diabetes mellitus (DM), and during pregnancy, hyperglycemia has numerous serious implications for organogenesis and fetal growth. Each type of DM has different neonatal implications based on pathogenesis, length of disease, and comorbidities. Currently, limited attention is given to the woman's type of DM when evaluating risks for neonates. The diagnosis of infant of a diabetic mother is not sufficient because of the varying pathophysiology of diabetes classifications and associated neonatal outcomes. By expanding the diagnosis to include the woman's classification and glucose control, maternity and neonatal care providers could develop plans of care based on potential neonatal outcomes, including anticipatory guidance for families. In this commentary, we propose a more specific diagnosis, rather than infant of a diabetic mother, to better serve these infants.
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Ahmed A, Rosella LC, Oskoui M, Watson T, Yang S. In utero Exposure to Maternal Diabetes and the Risk of Cerebral Palsy: A Population-based Cohort Study. Epidemiology 2023; 34:247-258. [PMID: 36722807 DOI: 10.1097/ede.0000000000001574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND Evidence on the effects of in utero exposure to maternal diabetes on cerebral palsy (CP) in offspring is limited. We aimed to examine the effects of pregestational (PGDM) and gestational diabetes (GDM) separately on CP risk and the mediating role of increased fetal size. METHODS In a population-based study, we included all live births in Ontario, Canada, between 2002 and 2017 followed up through 2018 (n = 2,110,177). Using administrative health data, we estimated crude and adjusted associations between PGDM or GDM and CP using Cox proportional hazards models to account for unequal follow-up in children. For the mediation analysis, we used marginal structural models to estimate the controlled direct effect of PGDM (and GDM) on the risk of CP not mediated by large-for-gestational age (LGA). RESULTS During the study period, 5,317 children were diagnosed with CP (187 exposed to PGDM and 171 exposed to GDM). Children of mothers with PGDM showed an increased risk (hazard ratio [HR]: 1.84 [95% confidence interval (CI): 1.59, 2.14]) after adjusting for maternal sociodemographic and clinical factors. We found no associations between GDM and CP (adjusted HR: 0.91 [0.77, 1.06]). Our mediation analysis estimated that LGA explained 14% of the PDGM-CP association. CONCLUSIONS In this population-based birth cohort study, maternal pregestational diabetes was associated with increased risk of CP, and the increased risk was not substantially mediated by the increased fetal size.
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Affiliation(s)
- Asma Ahmed
- From the Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada
- Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON, Canada
| | - Laura C Rosella
- Dalla Lana School of Public Health, Division of Epidemiology, University of Toronto, Toronto, ON, Canada
- ICES, Toronto, ON, Canada
- Institute for Better Health, Trillium Health Partners, Mississauga, ON, Canada
- Temerty Faculty of Medicine, Department of Laboratory Medicine and Pathology, University of Toronto, Toronto, ON, Canada
| | - Maryam Oskoui
- McGill University Health Center Research Institute (RI-MUHC), Child Health and Human Development Program, Centre for Outcomes Research and Evaluation, Montreal, QC, Canada
- Department of Pediatrics, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
- Department of Neurology & Neurosurgery, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
| | - Tristan Watson
- Dalla Lana School of Public Health, Division of Epidemiology, University of Toronto, Toronto, ON, Canada
- ICES, Toronto, ON, Canada
| | - Seungmi Yang
- From the Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada
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Bandoli G, Suttner D, Kiernan E, Baer RJ, Jelliffe-Pawlowski L, Chambers CD. Risk factors for neonatal encephalopathy in late preterm and term singleton births in a large California birth cohort. J Perinatol 2022; 42:341-347. [PMID: 34702969 PMCID: PMC8917979 DOI: 10.1038/s41372-021-01242-z] [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: 04/02/2021] [Revised: 09/29/2021] [Accepted: 10/06/2021] [Indexed: 02/08/2023]
Abstract
OBJECTIVE The objective was to investigate maternal and pregnancy characteristics associated with neonatal encephalopathy (NE). STUDY DESIGN We queried an administrative birth cohort from California between 2011 and 2017 to determine the association between each factor and NE with and without hypothermia treatment. RESULTS From 3 million infants born at 35 or more weeks of gestation, 6,857 cases of NE were identified (2.3 per 1000 births), 888 (13%) received therapeutic hypothermia. Risk factors for NE were stronger among cases receiving hypothermia therapy. Substance-related diagnosis, preexisting diabetes, preeclampsia, and any maternal infection were associated with a two-fold increase in risk. Maternal overweight/obesity, nulliparity, advanced maternal age, depression, gestational diabetes or hypertension, and short or long gestations also predicted NE. Young maternal age, Asian race and Hispanic ethnicity, and cannabis-related diagnosis lowered risk of NE. CONCLUSIONS By disseminating these results, we encourage further interrogation of these perinatal factors.
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Affiliation(s)
- Gretchen Bandoli
- Department of Pediatrics, University of California San Diego, La Jolla California, San Diego, USA.
| | - Denise Suttner
- Department of Pediatrics, University of California San Diego, La Jolla California,Rady Children’s Hospital, San Diego CA
| | - Elizabeth Kiernan
- Department of Pediatrics, University of California San Diego, La Jolla California
| | - Rebecca J Baer
- Department of Pediatrics, University of California San Diego, La Jolla California,Preterm Birth Initiative, University of California San Francisco
| | | | - Christina D Chambers
- Department of Pediatrics, University of California San Diego, La Jolla California
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Castillo-Castrejon M, Yamaguchi K, Rodel RL, Erickson K, Kramer A, Hirsch NM, Rolloff K, Jansson T, Barbour LA, Powell TL. Effect of type 2 diabetes mellitus on placental expression and activity of nutrient transporters and their association with birth weight and neonatal adiposity. Mol Cell Endocrinol 2021; 532:111319. [PMID: 33989714 PMCID: PMC8206039 DOI: 10.1016/j.mce.2021.111319] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 11/19/2022]
Abstract
AIMS Infants born to women with Type 2 Diabetes Mellitus (T2DM) are at risk of being born large for gestational age due to excess fetal fat accretion. Placental nutrient transport determines fetal nutrient availability, impacting fetal growth. The aims of the study were to evaluate the effect of T2DM on placental insulin signaling, placental nutrient transporters and neonatal adiposity. METHODS Placentas were collected from BMI-matched normoglycemic controls (NGT, n = 9) and T2DM (n = 9) women. Syncytiotrophoblast microvillous (MVM) and basal (BM) plasma membranes were isolated. Expression of glucose (GLUT1, -4), fatty acid (FATP2, -4, -6, FAT/CD36), amino acid (SNAT1, -2, -4, LAT1, -2) transporters, insulin signaling, and System A transporter activity was determined. Neonatal fat mass (%) was measured in a subset of neonates born to T2DM women. RESULTS GLUT1 protein expression was increased (p = 0.001) and GLUT4 decreased (p = 0.006) in BM from T2DM. MVM FATP6 expression was increased (p = 0.02) and correlated with birth weight in both T2DM and NGT groups (r = 0.65, p = 0.02). BM FATP6 expression was increased (p = 0.01) in T2DM. In MVM of T2DM placentas, SNAT1 expression was increased (p = 0.05) and correlated with birth weight (r = 0.84, p = 0.004); SNAT2 was increased (p = 0.01), however System A transporter activity was not different between groups. MVM LAT1 expression was increased (p = 0.01) in T2DM and correlated with birth weight (r = 0.59, p = 0.04) and neonatal fat mass (r = 0.76, p = 0.06). CONCLUSION In pregnancies complicated by T2DM placental protein expression of transporters for glucose, amino acids and fatty acids is increased, which may contribute to increased fetal growth and neonatal adiposity.
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Affiliation(s)
- Marisol Castillo-Castrejon
- Department of Obstetrics and Gynecology, Division of Reproductive Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA.
| | - Kyohei Yamaguchi
- Department of Obstetrics and Gynecology, Division of Reproductive Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA; Department of Obstetrics and Gynecology, Mie University, Mie, Japan
| | - Rachel L Rodel
- Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Kathryn Erickson
- Department of Obstetrics and Gynecology, Division of Reproductive Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Anita Kramer
- Department of Obstetrics and Gynecology, Division of Reproductive Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Nicole M Hirsch
- Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Kristy Rolloff
- Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Thomas Jansson
- Department of Obstetrics and Gynecology, Division of Reproductive Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Linda A Barbour
- Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA; Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Theresa L Powell
- Department of Obstetrics and Gynecology, Division of Reproductive Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA; Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
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Ornoy A, Becker M, Weinstein-Fudim L, Ergaz Z. Diabetes during Pregnancy: A Maternal Disease Complicating the Course of Pregnancy with Long-Term Deleterious Effects on the Offspring. A Clinical Review. Int J Mol Sci 2021; 22:ijms22062965. [PMID: 33803995 PMCID: PMC7999044 DOI: 10.3390/ijms22062965] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 02/28/2021] [Accepted: 03/11/2021] [Indexed: 12/12/2022] Open
Abstract
In spite of the huge progress in the treatment of diabetes mellitus, we are still in the situation that both pregestational (PGDM) and gestational diabetes (GDM) impose an additional risk to the embryo, fetus, and course of pregnancy. PGDM may increase the rate of congenital malformations, especially cardiac, nervous system, musculoskeletal system, and limbs. PGDM may interfere with fetal growth, often causing macrosomia, but in the presence of severe maternal complications, especially nephropathy, it may inhibit fetal growth. PGDM may also induce a variety of perinatal complications such as stillbirth and perinatal death, cardiomyopathy, respiratory morbidity, and perinatal asphyxia. GDM that generally develops in the second half of pregnancy induces similar but generally less severe complications. Their severity is higher with earlier onset of GDM and inversely correlated with the degree of glycemic control. Early initiation of GDM might even cause some increase in the rate of congenital malformations. Both PGDM and GDM may cause various motor and behavioral neurodevelopmental problems, including an increased incidence of attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). Most complications are reduced in incidence and severity with the improvement in diabetic control. Mechanisms of diabetic-induced damage in pregnancy are related to maternal and fetal hyperglycemia, enhanced oxidative stress, epigenetic changes, and other, less defined, pathogenic mechanisms.
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Affiliation(s)
- Asher Ornoy
- Adelson School of Medicine, Ariel University, Ariel 40700, Israel;
- Laboratory of Teratology, Department of Medical Neurobiology, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel; (L.W.-F.); (Z.E.)
- Correspondence: ; Tel.: +972-(2)-675-8329
| | - Maria Becker
- Adelson School of Medicine, Ariel University, Ariel 40700, Israel;
| | - Liza Weinstein-Fudim
- Laboratory of Teratology, Department of Medical Neurobiology, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel; (L.W.-F.); (Z.E.)
| | - Zivanit Ergaz
- Laboratory of Teratology, Department of Medical Neurobiology, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel; (L.W.-F.); (Z.E.)
- Medical Center, Hadassah Hebrew University, Mount Scopus, Jerusalem 91240, Israel
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Quirke FA, Healy P, Bhraonáin EN, Daly M, Biesty L, Hurley T, Walker K, Meher S, Haas DM, Bloomfield FH, Kirkham JJ, Molloy EJ, Devane D. COHESION: core outcomes in neonatal encephalopathy (protocol). Trials 2021; 22:125. [PMID: 33557892 PMCID: PMC7871638 DOI: 10.1186/s13063-021-05030-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 01/06/2021] [Indexed: 12/12/2022] Open
Abstract
Background Neonatal encephalopathy is a complex syndrome in infants that predominantly affects the brain and other organs. The leading cause is a lack of oxygen in the blood reaching the brain. Neonatal encephalopathy can result in mortality or complications later in life, including seizures, movement disorders and cerebral palsy. Treatment options for neonatal encephalopathy are limited mainly to therapeutic hypothermia, although other potential treatments are emerging. However, evaluations of the effectiveness of treatments are challenging because of heterogeneity and inconsistency in outcomes measured and reported between trials. In this paper, we detail how we will develop a core outcome set to standardise outcomes measured and reported upon for interventions for the treatment of neonatal encephalopathy. Methods We will systematically review the literature to identify outcomes reported previously in randomised trials and systematic reviews of randomised trials. We will identify outcomes important to parents or caregivers of infants diagnosed with and who have received treatment for neonatal encephalopathy. We will do this by conducting in person or by video teleconferencing interviews with parents or caregivers in high-income and low- to middle-income countries. Stakeholders with expertise in neonatal encephalopathy (parents/caregivers, healthcare providers and researchers) will rate the importance of identified outcomes in an online Delphi survey using either a three-round Delphi survey or a “Real-Time” Delphi survey to which stakeholders will be allocated at random. Consensus meetings will take place by video conference to allow for an international group of stakeholder representatives to discuss and vote on the outcomes to include in the final core outcome set (COS). Discussion More research is needed on treatments for neonatal encephalopathy. Standardising outcomes measured and reported in evaluations of the effectiveness of interventions for the treatment of neonatal encephalopathy will improve evidence synthesis and improve results reported in systematic reviews and meta-analysis in this area. Overall, this COS will allow for improved treatments to be identified, heterogeneity in research to be reduced, and overall patient care to be enhanced. Trial registration This study is registered in the Core Outcome Measures for Effectiveness (COMET) database http://www.comet-initiative.org/Studies/Details/1270.
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Affiliation(s)
- Fiona A Quirke
- Health Research Board Neonatal Encephalopathy PhD Training Network (NEPTuNE), Galway, Ireland. .,Health Research Board - Trials Methodology Research Network (HRB-TMRN), Galway, Ireland. .,College of Medicine, Nursing and Health Sciences, National University of Ireland Galway, Galway, Ireland.
| | - Patricia Healy
- College of Medicine, Nursing and Health Sciences, National University of Ireland Galway, Galway, Ireland.,School of Nursing and Midwifery, National University of Ireland Galway, Galway, Ireland
| | | | - Mandy Daly
- Advocacy and Policymaking, Irish Neonatal Health Alliance, Wicklow, Ireland
| | - Linda Biesty
- College of Medicine, Nursing and Health Sciences, National University of Ireland Galway, Galway, Ireland.,School of Nursing and Midwifery, National University of Ireland Galway, Galway, Ireland.,Qualitative Research in Trials Centre (QUESTS), National University of Ireland Galway, Galway, Ireland
| | - Tim Hurley
- Health Research Board Neonatal Encephalopathy PhD Training Network (NEPTuNE), Galway, Ireland.,Paediatrics and Child Health, Trinity College Dublin, Dublin, Ireland
| | - Karen Walker
- RPA Newborn Care, Sydney Local Health District, Sydney, Australia
| | - Shireen Meher
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - David M Haas
- Department of Obstetrics and Gynaecology, Indiana University School of Medicine, Indianapolis, USA
| | | | - Jamie J Kirkham
- Centre for Biostatistics, University of Manchester, Manchester, UK
| | - Eleanor J Molloy
- Paediatrics and Child Health, Trinity College Dublin, Dublin, Ireland.,Department of Neonatology, Children's Hospital Ireland at Crumlin and Tallaght, Coombe Women and Infants University Hospital, Dublin, Ireland
| | - Declan Devane
- Health Research Board - Trials Methodology Research Network (HRB-TMRN), Galway, Ireland.,College of Medicine, Nursing and Health Sciences, National University of Ireland Galway, Galway, Ireland.,School of Nursing and Midwifery, National University of Ireland Galway, Galway, Ireland.,Evidence Synthesis Ireland, National University of Ireland Galway, Galway, Ireland.,Cochrane Ireland, National University of Ireland Galway, Galway, Ireland
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12
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Xue H, Wu Z, Yao J, Zhao A, Zheng L, Yin X, Wang F, Zhao P. Cerebral Oxygen Changes in Neonates During Immediate Transition After Birth and Early Life: An Observational Study. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:4703-4715. [PMID: 33173280 PMCID: PMC7646445 DOI: 10.2147/dddt.s266726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/25/2020] [Indexed: 11/23/2022]
Abstract
Purpose The physiologic transition from a fetus to a neonate is composed of a series of complex processes that include changes in cerebral tissue oxygenation saturation (cSO2). Monitoring this process is of great importance. This study aimed to define the cSO2 reference interval in neonates without medical support, extending the measurements until 1 hour after birth, and to determine the incidence of abnormally low or high regional cerebral oxygenation during the neonatal transition. Patients and Methods A total of 418 neonates delivered by cesarean section were enrolled. Near-infrared spectroscopy was used to monitor cerebral oxygenation. Results We found that cSO2 of the non-oxygen-inhaled intrathecal anesthesia in neonates without medical support increased from about 49.0% in the second minute. Most of them reached cSO2 relative stabilization at 55.7-81.0% between 7 and 8 minutes after birth. One hour after birth, newborn cSO2 was maintained at 78.0-87.0%. The low cSO2 rate among babies born under intrathecal anesthesia with and without maternal oxygen inhalation during cesarean sections was approximately 4.5% and 9.0%, respectively. Conclusion We reported the trend in cSO2 from 2 minutes after birth to 1 hour in the neonatal nursing room and determined the incidence of abnormal regional cSO2 during this neonatal transition period. Anesthesiologists should pay special attention to the risk of cSO2 abnormalities in newborns when managing pregnant women with comorbidities.
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Affiliation(s)
- Hang Xue
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang 110004, People's Republic of China
| | - Ziyi Wu
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang 110004, People's Republic of China
| | - Jiaxin Yao
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang 110004, People's Republic of China
| | - Anqi Zhao
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang 110004, People's Republic of China
| | - Lanlan Zheng
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang 110004, People's Republic of China
| | - Xiao Yin
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang 110004, People's Republic of China
| | - Fang Wang
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang 110004, People's Republic of China
| | - Ping Zhao
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang 110004, People's Republic of China
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13
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Falqui SG, Bardanzellu F, Mecarini F, Fanos V, Neroni P. Could the E/A ratio be included in the cardiological evaluation of the offspring of diabetic mothers? A case-control study in South Sardinia. J Matern Fetal Neonatal Med 2020; 35:2741-2750. [PMID: 32757681 DOI: 10.1080/14767058.2020.1798397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Diabetes mellitus (DM) is a chronic disease widespread in the world. Sardinia represents, together with Finland, the region with the highest incidence of type 1 DM (DM1), as well as a high prevalence of gestational DM (GDM). Despite the improvement in obstetric surveillance, perinatal and long-term adverse outcomes are still frequent in the offspring of diabetic mothers. During gestations complicated by DM, fetal heart is one of the most affected organ potentially undergoing structural heart defects or several degrees of fetal myocardium hypertrophy and impaired cardiac function. AIM The aim of our study was to evaluate, through echocardiographic examination, cardiac features and performance in a South Sardinian population of newborns of diabetic mothers comparing them to a group of control subjects. CONCLUSIONS In our sample, the E/A ratio resulted a significant marker of early diastolic dysfunction in asymptomatic neonates born by diabetic mothers, even if such result should be confirmed on larger samples.
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Affiliation(s)
- Stella Giulia Falqui
- Neonatal Intensive Care Unit, Department of Surgical Sciences, AOU and University of Cagliari. SS, Monserrato, Italy
| | - Flaminia Bardanzellu
- Neonatal Intensive Care Unit, Department of Surgical Sciences, AOU and University of Cagliari. SS, Monserrato, Italy
| | - Federico Mecarini
- Neonatal Intensive Care Unit, Department of Surgical Sciences, AOU and University of Cagliari. SS, Monserrato, Italy
| | - Vassilios Fanos
- Neonatal Intensive Care Unit, Department of Surgical Sciences, AOU and University of Cagliari. SS, Monserrato, Italy
| | - Paola Neroni
- Neonatal Intensive Care Unit, Department of Surgical Sciences, AOU and University of Cagliari. SS, Monserrato, Italy
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14
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Abstract
PURPOSE OF REVIEW Infants of women with diabetes are at risk for specific morbidities including congenital anomalies, abnormalities of fetal growth, neonatal hypoglycemia, electrolyte abnormalities, polycythemia, hyperbilirubinemia, and respiratory distress syndrome. Recent studies have shed light on long-term outcomes of these infants and presented advances in treatment. The purpose of this review is to outline the most common neonatal morbidities affecting infants of women with diabetes, the pathophysiology and prevalence of these conditions, and contemporary approaches to treatment. RECENT FINDINGS Recent investigative findings have led to advances in treatment approaches for these infants, particularly regarding risks of neonatal hypoglycemia. Optimizing maternal glycemic control during pregnancy is imperative to improving infant outcomes. However, on a population level, maternal diabetes still poses significant risks to the infant. Timely and appropriate treatment of infants of women with diabetes is imperative to decrease short- and long-term morbidity.
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Affiliation(s)
- Sydney Peters
- Tufts University, 419 Boston Avenue, Medford, MA, USA
| | - Chloe Andrews
- Department of Newborn Medicine, Brigham & Women's Hospital, 75 Francis St, Boston, MA, USA
| | - Sarbattama Sen
- Department of Newborn Medicine, Brigham & Women's Hospital, 75 Francis St, Boston, MA, USA.
- Harvard Medical School, 25 Shattuck St, Boston, MA, 02115, USA.
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15
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Popescu MR, Panaitescu AM, Pavel B, Zagrean L, Peltecu G, Zagrean AM. Getting an Early Start in Understanding Perinatal Asphyxia Impact on the Cardiovascular System. Front Pediatr 2020; 8:68. [PMID: 32175294 PMCID: PMC7055155 DOI: 10.3389/fped.2020.00068] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/12/2020] [Indexed: 12/12/2022] Open
Abstract
Perinatal asphyxia (PA) is a burdening pathology with high short-term mortality and severe long-term consequences. Its incidence, reaching as high as 10 cases per 1000 live births in the less developed countries, prompts the need for better awareness and prevention of cases at risk, together with management by easily applicable protocols. PA acts first and foremost on the nervous tissue, but also on the heart, by hypoxia and subsequent ischemia-reperfusion injury. Myocardial development at birth is still incomplete and cannot adequately respond to this aggression. Cardiac dysfunction, including low ventricular output, bradycardia, and pulmonary hypertension, complicates the already compromised circulatory status of the newborn with PA. Multiorgan and especially cardiovascular failure seem to play a crucial role in the secondary phase of hypoxic-ischemic encephalopathy (HIE) and its high mortality rate. Hypothermia is an acceptable solution for HIE, but there is a fragile equilibrium between therapeutic gain and cardiovascular instability. A profound understanding of the underlying mechanisms of the nervous and cardiovascular systems and a close collaboration between the bench and bedside specialists in these domains is compulsory. More resources need to be directed toward the prevention of PA and the consecutive decrease of cardiovascular dysfunction. Not much can be done in case of an unexpected acute event that produces PA, where recognition and prompt delivery are the key factors for a positive clinical result. However, the situation is different for high-risk pregnancies or circumstances that make the fetus more vulnerable to asphyxia. Improving the outcome in these cases is possible through careful monitoring, identifying the high-risk pregnancies, and the implementation of novel prenatal strategies. Also, apart from adequately supporting the heart through the acute episode, there is a need for protocols for long-term cardiovascular follow-up. This will increase our recognition of any lasting myocardial damage and will enhance our perspective on the real impact of PA. The goal of this article is to review data on the cardiovascular consequences of PA, in the context of an immature cardiovascular system, discuss the potential contribution of cardiovascular impairment on short and long-term outcomes, and propose further directions of research in this field.
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Affiliation(s)
- Mihaela Roxana Popescu
- Cardiology Department, Elias University Hospital, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
| | - Anca Maria Panaitescu
- Department of Obstetrics and Gynecology, Filantropia Clinical Hospital, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
| | - Bogdan Pavel
- Division of Physiology and Neuroscience, Department of Functional Sciences, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
- Intensive Care Department, Clinical Emergency Hospital of Plastic Surgery and Burns, Bucharest, Romania
| | - Leon Zagrean
- Division of Physiology and Neuroscience, Department of Functional Sciences, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
| | - Gheorghe Peltecu
- Department of Obstetrics and Gynecology, Filantropia Clinical Hospital, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
| | - Ana-Maria Zagrean
- Division of Physiology and Neuroscience, Department of Functional Sciences, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
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16
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Zhu C, Han TL, Zhao Y, Zhou X, Mao X, Qi H, Baker PN, Zhang H. A mouse model of pre-pregnancy maternal obesity combined with offspring exposure to a high-fat diet resulted in cognitive impairment in male offspring. Exp Cell Res 2018; 368:159-166. [PMID: 29698637 DOI: 10.1016/j.yexcr.2018.04.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 04/16/2018] [Accepted: 04/17/2018] [Indexed: 01/03/2023]
Abstract
BACKGROUND Cognitive impairment is a brain dysfunction characterized by neuropsychological deficits in attention, working memory, and executive function. Maternal obesity and consumption of a high-fat diet (HFD) in the offspring has been suggested to have detrimental consequences for offspring cognitive function through its effect on the hippocampus and prefrontal cortex. Therefore, our study aimed to investigate the effects of maternal obesity and offspring HFD exposure on the brain metabolome of the offspring. METHODS In our pilot study, a LepRdb/+ mouse model was used to model pre-pregnancy maternal obesity and the c57bl/6 wildtype was used as a control group. Offspring were fed either a HFD or a low-fat control diet (LFD) after weaning (between 8 and 10 weeks). The Mirrors water maze was performed between 28 and 30 weeks to measure cognitive function. Fatty acid metabolomic profiles of the prefrontal cortex and hippocampus from the offspring at 30-32 weeks were analyzed using gas chromatography-mass spectrometry. RESULTS The memory of male offspring from obese maternal mice, consuming a HFD post-weaning, was significantly impaired when compared to the control offspring mice. No significant differences were observed in female offspring. In male mice, the fatty acid metabolites in the prefrontal cortex were most affected by maternal obesity, whereas, the fatty acid metabolites in the hippocampus were most affected by the offspring's diet. Hexadecanoic acid and octadecanoic acid were significantly affected in both the hippocampus and pre-frontal cortex, as a result of maternal obesity and a HFD in the offspring. CONCLUSION Our findings suggest that the combination of maternal obesity and HFD in the offspring can result in spatial cognitive deficiency in the male offspring, by influencing the fatty acid metabolite profiles in the prefrontal cortex and hippocampus. Further research is needed to validate the results of our pilot study.
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Affiliation(s)
- Chen Zhu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Canada - China -New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing 400016, People's Republic of China; Department of Obstetrics and Gynecology, Xin Qiao Hospital, The Second Medical College of Army Medical University, Chongqing, China
| | - Ting-Li Han
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Canada - China -New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing 400016, People's Republic of China; Liggins Institute, University of Auckland, Auckland, New Zealand
| | - Yalan Zhao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Canada - China -New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Xiaobo Zhou
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Canada - China -New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Xun Mao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Canada - China -New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Hongbo Qi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Canada - China -New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Philip N Baker
- Canada - China -New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing 400016, People's Republic of China; Liggins Institute, University of Auckland, Auckland, New Zealand; College of Medicine, Biological Sciences and Psychology, University of Leicester, UK
| | - Hua Zhang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Canada - China -New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing 400016, People's Republic of China.
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