scholarly journals Hypoxia and Oxidative Stress Are Associated with Reduced Fetal Growth in Twin and Undernourished Sheep Pregnancies

Animals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 217 ◽  
Author(s):  
Francisco Sales ◽  
Oscar Peralta ◽  
Eileen Narbona ◽  
Sue McCoard ◽  
Mónica De los Reyes ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Cord Blood ◽  
Fetal Growth ◽  
Fetal Growth Restriction ◽  
Growth Restriction ◽  
Maternal Undernutrition ◽  
Natural Pasture ◽  
And Oxidative Stress

Low birth weight has profound implications for perinatal mortality and morbidity in lambs, causing higher mortality and lower growth potential. Low birth weight, as a consequence of fetal growth restriction, occurs in undernourished and multiple pregnancies, where hypoxia and oxidative stress could play a critical role. Our aim was to establish the effects of nutritional deprivation and pregnancy rank on fetal growth, oxygenation, and oxidative status in sheep pregnancies under extensive Patagonian conditions. At 30 days after mating, single- and twin-bearing ewes were offered only natural pasture (undernutrition group) or natural pasture plus concentrate supplementation (well-nourished group). At day 140 of gestation, blood gases and redox status were evaluated in venous cord blood, and fetal biometric characteristics were obtained after cesarean section. Both maternal undernutrition and twinning led to decreased oxygen supply to the fetuses (p = 0.016 and p = 0.050, respectively), which was associated with decreased intrauterine growth (r = 0.446, p < 0.01). Moreover, twinning increased oxidative stress in cord blood (p < 0.05), which might also contribute to fetal growth restriction. These results reinforce the importance of maternal nutrition, especially for those ewes bearing multiples, and opens new possibilities for nutritional or antioxidant interventions for preventing fetal hypoxia and oxidative stress.

Early growth outcomes in very low birth weight infants with bronchopulmonary dysplasia or fetal growth restriction

2020 ◽  
Vol 88 (4) ◽  
pp. 601-604
Author(s):  
Jennifer Check ◽  
Elizabeth T. Jensen ◽  
Joseph A. Skelton ◽  
Walter T. Ambrosius ◽  
T. Michael O’Shea
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Bronchopulmonary Dysplasia ◽  
Fetal Growth ◽  
Fetal Growth Restriction ◽  
Very Low Birth Weight ◽  
Early Growth ◽  
Growth Restriction ◽  
Low Birth Weight Infants ◽  
Growth Outcomes

scholarly journals The Role of NFκB in Healthy and Preeclamptic Placenta: Trophoblasts in the Spotlight

2020 ◽  
Vol 21 (5) ◽  
pp. 1775 ◽  
Author(s):  
Brooke Armistead ◽  
Leena Kadam ◽  
Sascha Drewlo ◽  
Hamid-Reza Kohan-Ghadr
Keyword(s):  
Oxidative Stress ◽  
Fetal Growth ◽  
Fetal Growth Restriction ◽  
Growth And Development ◽  
Protein Family ◽  
Growth Restriction ◽  
Placental Development ◽  
Critical Organ ◽  
And Oxidative Stress

The NFκB protein family regulates numerous pathways within the cell—including inflammation, hypoxia, angiogenesis and oxidative stress—all of which are implicated in placental development. The placenta is a critical organ that develops during pregnancy that primarily functions to supply and transport the nutrients required for fetal growth and development. Abnormal placental development can be observed in numerous disorders during pregnancy, including fetal growth restriction, miscarriage, and preeclampsia (PE). NFκB is highly expressed in the placentas of women with PE, however its contributions to the syndrome are not fully understood. In this review we discuss the molecular actions and related pathways of NFκB in the placenta and highlight areas of research that need attention

scholarly journals PRETERM BIRTH AND FETAL GROWTH RESTRICTION IN HIV-INFECTED BRAZILIAN PREGNANT WOMEN

2015 ◽  
Vol 57 (2) ◽  
pp. 111-120 ◽  
Author(s):  
Helena Lucia Barroso DOS REIS ◽  
Karina da Silva ARAUJO ◽  
Lilian Paula RIBEIRO ◽  
Daniel Ribeiro DA ROCHA ◽  
Drielli Petri ROSATO ◽  
...  
Keyword(s):  
Birth Weight ◽  
Preterm Birth ◽  
Low Birth Weight ◽  
Hiv Infection ◽  
Pregnant Women ◽  
Fetal Growth ◽  
Low Income ◽  
Fetal Growth Restriction ◽  
Growth Restriction ◽  
Southeastern Brazil

Introduction: Maternal HIV infection and related co-morbidities may have two outstanding consequences to fetal health: mother-to-child transmission (MTCT) and adverse perinatal outcomes. After Brazilian success in reducing MTCT, the attention must now be diverted to the potentially increased risk for preterm birth (PTB) and intrauterine fetal growth restriction (IUGR). Objective: To determine the prevalence of PTB and IUGR in low income, antiretroviral users, publicly assisted, HIV-infected women and to verify its relation to the HIV infection stage. Patients and Methods: Out of 250 deliveries from HIV-infected mothers that delivered at a tertiary public university hospital in the city of Vitória, state of Espírito Santo, Southeastern Brazil, from November 2001 to May 2012, 74 single pregnancies were selected for study, with ultrasound validated gestational age (GA) and data on birth dimensions: fetal weight (FW), birth length (BL), head and abdominal circumferences (HC, AC). The data were extracted from clinical and pathological records, and the outcomes summarized as proportions of preterm birth (PTB, < 37 weeks), low birth weight (LBW, < 2500g) and small (SGA), adequate (AGA) and large (LGA) for GA, defined as having a value below, between or beyond the ±1.28 z/GA score, the usual clinical cut-off to demarcate the 10th and 90th percentiles. Results: PTB was observed in 17.5%, LBW in 20.2% and SGA FW, BL, HC and AC in 16.2%, 19.1%, 13.8%, and 17.4% respectively. The proportions in HIV-only and AIDS cases were: PTB: 5.9 versus 27.5%, LBW: 14.7% versus 25.0%, SGA BW: 17.6% versus 15.0%, BL: 6.0% versus 30.0%, HC: 9.0% versus 17.9%, and AC: 13.3% versus 21.2%; only SGA BL attained a significant difference. Out of 15 cases of LBW, eight (53.3%) were preterm only, four (26.7%) were SGA only, and three (20.0%) were both PTB and SGA cases. A concomitant presence of, at least, two SGA dimensions in the same fetus was frequent. Conclusions: The proportions of preterm birth and low birth weight were higher than the local and Brazilian prevalence and a trend was observed for higher proportions of SGA fetal dimensions than the expected population distribution in this small casuistry of newborn from the HIV-infected, low income, antiretroviral users, and publicly assisted pregnant women. A trend for higher prevalence of PTB, LBW and SGA fetal dimensions was also observed in infants born to mothers with AIDS compared to HIV-infected mothers without AIDS.

scholarly journals DAAM2 is elevated in the circulation and placenta in pregnancies complicated by fetal growth restriction and is regulated by hypoxia

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Natasha de Alwis ◽  
Sally Beard ◽  
Natalie K. Binder ◽  
Natasha Pritchard ◽  
Tu’uhevaha J. Kaitu’u-Lino ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Mrna Expression ◽  
Fetal Growth ◽  
Fetal Growth Restriction ◽  
Linear Regression Analysis ◽  
Growth Restriction ◽  
Oxidative Stress Marker ◽  
Small Interfering Rnas ◽  
Maternal Circulation ◽  
And Oxidative Stress

AbstractPreviously, we identified increased maternal circulating DAAM2 mRNA in pregnancies complicated by preterm fetal growth restriction (FGR). Here, we assessed whether circulating DAAM2 mRNA could detect FGR, and whether the DAAM2 gene, known to play roles in the Wnt signalling pathway is expressed in human placenta and associated with dysfunction and FGR. We performed linear regression analysis to calculate area under the ROC curve (AUC) for DAAM2 mRNA expression in the maternal circulation of pregnancies complicated by preterm FGR. DAAM2 mRNA expression was assessed across gestation by qPCR. DAAM2 protein and mRNA expression was assessed in preterm FGR placenta using western blot and qPCR. DAAM2 expression was assessed in term cytotrophoblasts and placental explant tissue cultured under hypoxic and normoxic conditions by qPCR. Small interfering RNAs were used to silence DAAM2 in term primary cytotrophoblasts. Expression of growth, apoptosis and oxidative stress genes were assessed by qPCR. Circulating DAAM2 mRNA was elevated in pregnancies complicated by preterm FGR [p < 0.0001, AUC = 0.83 (0.78–0.89)]. Placental DAAM2 mRNA was detectable across gestation, with highest expression at term. DAAM2 protein was increased in preterm FGR placentas but demonstrated no change in mRNA expression. DAAM2 mRNA expression was increased in cytotrophoblasts and placental explants under hypoxia. Silencing DAAM2 under hypoxia decreased expression of pro-survival gene, BCL2 and oxidative stress marker, NOX4, whilst increasing expression of antioxidant enzyme, HMOX-1. The increased DAAM2 associated with FGR and hypoxia implicates a potential role in placental dysfunction. Decreasing DAAM2 may have cytoprotective effects, but further research is required to elucidate its role in healthy and dysfunctional placentas.

Cord blood oxidative stress markers correlate with umbilical artery pulsatility in fetal growth restriction

2012 ◽  
Vol 26 (6) ◽  
pp. 576-580 ◽  
Author(s):  
Emine Seda Guvendag Guven ◽  
Deniz Karcaaltincaba ◽  
Omer Kandemir ◽  
Sadiman Kiykac ◽  
Ahmet Mentese
Keyword(s):  
Oxidative Stress ◽  
Cord Blood ◽  
Fetal Growth ◽  
Fetal Growth Restriction ◽  
Umbilical Artery ◽  
Growth Restriction ◽  
Oxidative Stress Markers ◽  
Stress Markers

scholarly journals Obstetrical outcome of pregnancy complicated with first trimester bleeding and subchorionic hematoma

2019 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
Kiran Agarwal ◽  
Ritu . ◽  
Amrita Singh ◽  
Anjali Singh ◽  
Amrita Mishra
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Fetal Growth ◽  
Fetal Growth Restriction ◽  
First Trimester ◽  
Growth Restriction ◽  
Antepartum Haemorrhage ◽  
Increased Risk ◽  
The Difference ◽  
Nicu Admission

Background: First trimester bleeding complicates around 20-27% of pregnancy. Objective of this study was to evaluate and compare the feto-maternal and pregnancy outcome in patients presenting with live pregnancy complicated with first trimester bleeding and subchorionic hematoma with those without subchorionic hematoma.Methods: In this prospective observational study, based on ultrasonography, live pregnancies were categorized into two groups, first group having first trimester bleeding with subchorionic hematoma and second with first trimester bleeding only without any hematoma. They were evaluated for the end outcome of pregnancy in terms of abortion and continuation. Continued pregnancies were evaluated for antenatal complications, delivery and intrapartum events along with fetal outcomes.Results: Outcome of pregnancies presenting with first trimester bleeding in terms of abortion was similar in both the groups, 22.8% and 21.5% with hematoma and without hematoma respectively. Incidence of preeclampsia was 11.4% and Fetal growth restriction was 7% in pregnancies with first trimester bleeding with hematoma and was significantly higher than those without hematoma which was 3.07% for preeclampsia and 3% for fetal growth restriction. Incidence of antepartum haemorrhage was higher in hematoma group but the result was not statistically significant. 20% pregnancies with first trimester bleeding with hematoma had preterm deliveries, while it was 7.7% in pregnancies without hematoma and the difference was statistically significant. Low birth weight had occurred in 20% of babies in first group of patients while 4.6% in second group, difference being statistically significant.Conclusions: We found that live pregnancies with first trimester bleeding and subchorionic hematoma were associated with similar risk of miscarriage and antepartum haemorrhage while increased risk of preeclampsia, fetal growth restrictions, preterm birth, non-reassuring fetal heart pattern, caesarean delivery and low birth weight baby when compared to patients with first trimester bleeding without subchorionic hematoma. There was no difference in 5 minutes Apgar score and the NICU admission in both the groups.

Maternal Undernourishment in Guinea Pigs Leads to Fetal Growth Restriction with Increased Hypoxic Cells and Oxidative Stress in the Brain

2019 ◽  
Vol 41 (5-6) ◽  
pp. 290-299
Author(s):  
Yohei Maki ◽  
Karen Nygard ◽  
Robert R. Hammond ◽  
Timothy R.H. Regnault ◽  
Bryan S. Richardson
Keyword(s):  
Oxidative Stress ◽  
Fetal Growth ◽  
Fetal Growth Restriction ◽  
Guinea Pigs ◽  
Growth Restriction ◽  
The Brain ◽  
And Oxidative Stress
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