keyword
https://read.qxmd.com/read/33634057/impaired-oligodendrocyte-development-following-preterm-birth-promoting-gabaergic-action-to-improve-outcomes
#1
REVIEW
Julia C Shaw, Gabrielle K Crombie, Hannah K Palliser, Jonathan J Hirst
Preterm birth is associated with poor long-term neurodevelopmental and behavioral outcomes, even in the absence of obvious brain injury at the time of birth. In particular, behavioral disorders characterized by inattention, social difficulties and anxiety are common among children and adolescents who were born moderately to late preterm (32-37 weeks' gestation). Diffuse deficits in white matter microstructure are thought to play a role in these poor outcomes with evidence suggesting that a failure of oligodendrocytes to mature and myelinate axons is responsible...
2021: Frontiers in Pediatrics
https://read.qxmd.com/read/33625689/creb-binding-protein-crebbp-and-preeclampsia-a-new-promising-target-gene
#2
Hossein Sadeghi, Sahra Esmkhani, Reihaneh Pirjani, Mona Amin-Beidokhti, Milad Gholami, Ghasem Azizi Tabesh, Mohammad Reza Ghasemi, Latif Gachkar, Reza Mirfakhraie
Preeclampsia (PE) is a major complication of pregnancy and remains a leading cause of neonatal and maternal mortality worldwide. Several studies have revealed that the incidence of preeclampsia is high in mothers who carried a fetus with Rubinstein-Taybi Syndrome due to the mutation in CREBBP. We aimed to compare the expression level of the CERBBP gene between preeclamptic and healthy placenta in our study. The expression level of CREBBP gene was evaluated in a total of one hundred placental biopsies from PE patients and healthy pregnant women after delivery using quantitative real-time polymerase chain reaction (qRT-PCR)...
February 24, 2021: Molecular Biology Reports
https://read.qxmd.com/read/33624796/downregulation-of-aromatase-plays-a-dual-role-in-preeclampsia
#3
Dawei Zhu, Jie Huang, Xing Gu, Li Li, Jian Han
Preeclampsia (PE) is a gestational disease which seriously impairs maternal and infant health. However, the pathogenesis of PE remains unclear. The aromatase (CYP19A1) in placenta converts androgens from maternal and fetal adrenal glands to estrogen. Therefore, this change in the aromatase expression or function and the subsequent change of steroids in the placenta could be related to the pathophysiology of PE. In this study, we first analysed the expression of CYP19A1 in clinical placental tissues as well as the level of sex hormones in corresponding serum samples...
February 24, 2021: Molecular Human Reproduction
https://read.qxmd.com/read/33624555/gestational-long-term-hypoxia-induces-metabolomic-reprogramming-and-phenotypic-transformations-in-fetal-sheep-pulmonary-arteries
#4
Eric Leslie, Vanessa Lopez, Nana A O Anti, Rafael Alvarez, Isaac Kafeero, Donald G Welsh, Monica Romero, Shawn Kaushal, Catherine M Johnson, Remy Bosviel, Ivana Blazenovic, Rui Song, Alex Brito, Michael R La Frano, Lubo Zhang, John W Newman, Oliver Fiehn, Sean M Wilson
Gestational long-term hypoxia increases the risk of myriad diseases in infants including persistent pulmonary hypertension. Similar to humans, fetal lamb lung development is susceptible to long-term intrauterine hypoxia, with structural and functional changes associated with the development of pulmonary hypertension including pulmonary arterial medial wall thickening and dysregulation of arterial reactivity, which culminates in decreased right ventricular output. To further explore the mechanisms associated with hypoxia-induced aberrations in the fetal sheep lung, we examined the premise that metabolomic changes and functional phenotypic transformations occur due to intrauterine, long-term hypoxia...
February 24, 2021: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://read.qxmd.com/read/33622795/impact-of-acute-and-chronic-hypoxia-ischemia-on-the-transitional-circulation
#5
REVIEW
Arvind Sehgal, Beth J Allison, Suzanne L Miller, Graeme R Polglase, Patrick J McNamara, Stuart B Hooper
The transition from intrauterine life to extrauterine existence encompasses significant cardiorespiratory adaptations. These include rapid lung aeration and increase in pulmonary blood flow (PBF). Perinatal asphyxia and fetal growth restriction can severely hamper this transition. Hypoxia is the common denominator in these 2 disease states, with the former characterized by acute insult and the latter by utero-placental insufficiency and a chronic hypoxemic state. Both may manifest as hemodynamic instability...
February 23, 2021: Pediatrics
https://read.qxmd.com/read/33618181/molecular-mechanisms-regulating-lysophosphatidylcholine-acyltransferase-1-lpcat1-in-human-pregnancy
#6
Neeraja Purandare, Paige Minchella, Mallika Somayajulu, Katherine J Kramer, Jordan Zhou, Nellena Adekoya, Robert A Welch, Lawrence I Grossman, Siddhesh Aras, Maurice-Andre Recanati
INTRODUCTION: Lysophosphatidylcholine Acyltransferase 1 (LPCAT1) is necessary for surfactant production in fetal lungs. Mechanisms responsible for its regulation during gestation remain to be elucidated. Our goal is to evaluate molecular mechanisms regulating LPCAT1 expression during gestation and after glucocorticoid administration. METHODS: Placentas throughout gestation were assayed for LPCAT1 protein levels. A placental cell line, HTR-8/SVneo (HTR), was used as a model to test the effects of placental oxygen tension found during pregnancy as well as the effects of dexamethasone used therapeutically in the clinic...
February 13, 2021: Placenta
https://read.qxmd.com/read/33602315/maternal-and-fetal-effects-of-covid-19-virus-on-a-complicated-triplet-pregnancy-a-case-report
#7
Maryam Rabiei, Tahereh Soori, Amene Abiri, Zohreh Farsi, Arshia Shizarpour, Reihaneh Pirjani
BACKGROUND: Coronavirus disease 2019 (COVID-19), the global pandemic that has spread throughout the world, is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Given the limited scientific evidence on the manifestations and potential impact of this virus on pregnancy, we decided to report this case. CASE PRESENTATION: The patient was a 38 year-old Iranian woman with a triplet pregnancy and a history of primary infertility, as well as hypothyroidism and gestational diabetes...
February 18, 2021: Journal of Medical Case Reports
https://read.qxmd.com/read/33586943/clinical-application-experience-of-nursing-intervention-in-improving-fetal-intrauterine-hypoxia-with-umbilical-cord-around-neck-during-delivery
#8
Xiaojie Zhang, Xinxin Chen, Qingyun Meng, Chunxia Yin, Dongying Li, Shuqi Wei, Yan Chu
No abstract text is available yet for this article.
February 15, 2021: Panminerva Medica
https://read.qxmd.com/read/33582287/exposure-to-4-bromodiphenyl-ether-during-pregnancy-blocks-testis-development-in-male-rat-fetuses
#9
Yang Li, Feifei Ma, Zengqiang Li, Yige Yu, Haoni Yan, Anam Tahir, Wenwen Zheng, Xiaoheng Li, Tongliang Huang, Ren-Shan Ge
4-Bromodiphenyl ether (BDE3) is a photodegradation product of higher polybrominated diphenyl ether flame retardants and is known as an endocrine disruptor. However, it is unclear whether and how BDE3 affects the development of fetal testes. This study aimed to investigate the effect of in utero exposure to BDE3 on fetal testicular development in rats. From gestational day (GD) 12 to 21, BDE3 (0, 50, 100, and 200 mg/kg) was daily gavaged to female pregnant Sprague Dawley rats. BDE3 significantly reduced serum testosterone levels of male pups starting at 50 mg/kg...
February 11, 2021: Toxicology Letters
https://read.qxmd.com/read/33580607/acardiac-twin-pregnancies-part-vi-why-does-acardiac-twinning-occur-only-in-the-first-trimester
#10
Martin J C van Gemert, Michael G Ross, Jeroen P H M van den Wijngaard, Peter G J Nikkels
BACKGROUND: Clinical observation suggests that acardiac twinning occurs only in the first trimester. In part, this contradicts our previous analysis (part IV) of Benirschke's concept that unequal embryonic splitting causes unequal embryo/fetal blood volumes and pressures. Our aim is to explain why acardiac onset is restricted to the first trimester. METHODS: We applied the vascular resistance scheme of two fetuses connected by arterio-arterial (AA) and veno-venous (VV) anastomoses, the small VV resistance approximated as zero...
February 12, 2021: Birth Defects Research
https://read.qxmd.com/read/33571845/integrated-analysis-of-multiple-microarray-studies-to-identify-novel-gene-signatures-in-preeclampsia
#11
Qingling Kang, Wei Li, Juan Xiao, Nan Yu, Lei Fan, Menghan Sha, Songyan Ma, Jianli Wu, Suhua Chen
INTRODUCTION: Preeclampsia (PE) is one of the major causes of maternal and fetal morbidity and mortality in pregnancy worldwide. However, the intrinsic molecular mechanisms underlying the pathogenesis of PE have not yet been fully elucidated. METHODS: Robust rank aggregation (RRA), weighted correlation network analysis (WGCNA) and protein-protein interaction (PPI) methods were used to identify robust differentially expressed genes (DEGs) and hub genes in preeclampsia and subgroups based on 10 Gene Expression Omnibus (GEO) datasets...
February 2, 2021: Placenta
https://read.qxmd.com/read/33563196/oxidative-stress-and-inflammatory-markers-of-cordocentesis-blood-in-response-to-fetal-anemia
#12
Fuanglada Tongprasert, Sirinart Kumfu, Nipon Chattipakorn, Theera Tongsong
BACKGROUND: Hypothetically, fetal anemic hypoxia causes cellular damage with an increase in oxidative stress levels. This study, using hemoglobin (Hb) Bart's disease as a study model, aims to compare the levels of oxidative stress and inflammatory markers as well as fetal hemodynamics in anemic fetuses with those of non-anemic fetuses. MATERIALS AND METHODS: Forty pregnancies at risk of fetal Hb Bart's disease scheduled for cordocentesis at 18 to 22 weeks were recruited into the study...
February 4, 2021: Current Molecular Medicine
https://read.qxmd.com/read/33549483/perigestational-alcohol-consumption-induces-altered-early-placentation-and-organogenic-embryo-growth-restriction-by-disruption-of-trophoblast-angiogenic-factors
#13
Gisela Soledad Gualdoni, Martín Ricardo Ventureira, Tamara Anahí Coll, Wilder Alberto Palomino, Claudio Gustavo Barbeito, Elisa Cebral
RESEARCH QUESTION: Maternal alcohol consumption produces fetal retardation and malformations, probably associated with placental defects. Does perigestational alcohol consumption up to organogenesis lead to abnormal placentation and embryo growth restriction by disrupting the vascular endothelial growth factor (VEGF) system in embryo-placental development? DESIGN: Female mice were treated with 10% ethanol in drinking water before and up to day 10 of gestation. Control mice received ethanol-free water...
November 2, 2020: Reproductive Biomedicine Online
https://read.qxmd.com/read/33546842/syncytiotrophoblast-stress-in-preeclampsia-the-convergence-point-for-multiple-pathways
#14
REVIEW
Christopher W G Redman, Anne Cathrine Staff, James M Roberts
Preeclampsia evolves in 2 stages: a placental problem that generates signals to the mother to cause a range of responses that comprise the second stage (preeclampsia syndrome). The first stage of early-onset preeclampsia is poor placentation, which we here call malplacentation. The spiral arteries are incompletely remodeled, leading to later placental malperfusion, relatively early in the second half of pregnancy. The long duration of the first stage (several months) is unsurprisingly associated with fetal growth restriction...
November 8, 2020: American Journal of Obstetrics and Gynecology
https://read.qxmd.com/read/33545630/cd15-immunostaining-improves-placental-diagnosis-of-fetal-hypoxia
#15
Larissa Seidmann, Yevgeniy Kamyshanskiy, Daniel Christoph Wagner, Stefanie Zimmer, Wilfried Roth
INTRODUCTION: Fetal hypoxic events with unclear predictive value are a common indication for placenta examination. We evaluated whether the use of CD15 immunostaining can improve the assessment of severity and duration of fetal hypoxia. METHODS: We compared placentas (37-42 gestational weeks) from stillborns/newborns with birth asphyxia (BA) and non-hypoxic newborns. Placental findings were studied in following groups: (1) acute BA (n = 11) due to placental abruption, (2) non-acute BA (n = 121) due to non-acute conditions, (3) non-BA (n = 46) in pregnancies with preeclampsia and gestational diabetes, and (4) controls (n = 30)...
January 27, 2021: Placenta
https://read.qxmd.com/read/33542786/1-o-hexyl-2-3-5-trimethylhydroquinone-ameliorates-the-development-of-preeclampsia-through-suppression-of-oxidative-stress-and-endothelial-cell-apoptosis
#16
Lai Jiang, Yanping Gong, Jie Rao, Qiuhong Yang, Na Gao, Guiyang Li, Yuyan Ma
1-O-Hexyl-2,3,5-trimethylhydroquinone (HTHQ), a potent nuclear factor-E2-related factor 2 (Nrf2) activator, has potent antioxidant activity by scavenging reactive oxygen species (ROS). However, the role of HTHQ on the development of preeclampsia (PE) and the underlying mechanisms have barely been explored. In the present study, PE model was induced by adenovirus-mediated overexpression of soluble fms-like tyrosine kinase 1 (sFlt-1) in pregnant mice. The results showed that HTHQ treatment significantly relieved the high systolic blood pressure (SBP) and proteinuria and increased the fetal weight and fetal weight/placenta weight in preeclamptic mice...
2021: Oxidative Medicine and Cellular Longevity
https://read.qxmd.com/read/33541916/changing-clinical-characteristics-of-infants-treated-for-hypoxic-ischaemic-encephalopathy-in-england-wales-and-scotland-a-population-based-study-using-the-national-neonatal-research-database
#17
Lory Hage, Dusha Jeyakumaran, Jon Dorling, Shalini Ojha, Don Sharkey, Nicholas Longford, Neena Modi, Cheryl Battersby, Chris Gale
BACKGROUND: Therapeutic hypothermia is standard of care for babies with moderate/severe hypoxic-ischaemic encephalopathy and is increasingly used for mild encephalopathy. OBJECTIVE: Describe temporal trends in the clinical condition of babies diagnosed with hypoxic-ischaemic encephalopathy who received therapeutic hypothermia. DESIGN: Retrospective cohort study using data held in the National Neonatal Research Database. SETTING: National Health Service neonatal units in England, Wales and Scotland...
February 4, 2021: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://read.qxmd.com/read/33541374/non-invasive-monitoring-of-ph-and-oxygen-using-miniaturized-electrochemical-sensors-in-an-animal-model-of-acute-hypoxia
#18
Laura Pla, Sergio Berdún, Mònica Mir, Lourders Rivas, Sandrine Miserere, Samuel Dulay, Josep Samitier, Elisenda Eixarch, Miriam Illa, Eduard Gratacós
BACKGROUND: One of the most prevalent causes of fetal hypoxia leading to stillbirth is placental insufficiency. Hemodynamic changes evaluated with Doppler ultrasound have been used as a surrogate marker of fetal hypoxia. However, Doppler evaluation cannot be performed continuously. As a first step, the present work aimed to evaluate the performance of miniaturized electrochemical sensors in the continuous monitoring of oxygen and pH changes in a model of acute hypoxia-acidosis. METHODS: pH and oxygen electrochemical sensors were evaluated in a ventilatory hypoxia rabbit model...
February 4, 2021: Journal of Translational Medicine
https://read.qxmd.com/read/33531673/altered-erythropoiesis-in-newborns-with-congenital-heart-disease
#19
Stephanie Y Tseng, Zhiqian Gao, Theodosia A Kalfa, Nicholas J Ollberding, Sammy Tabbah, Regina Keller, James F Cnota
BACKGROUND: Fetal hypoxia has been implicated in fetal growth restriction in congenital heart disease (CHD) and leads to stress erythropoiesis in utero. The objective is to assess erythropoiesis and its association with growth in newborns with CHD. METHODS: Fetuses with prenatally diagnosed CHD from 2013 to 2018 were retrospectively reviewed. Pregnancies with multiple gestation, genetic abnormalities, major extra-cardiac anomalies, and placental abruption were excluded...
February 2, 2021: Pediatric Research
https://read.qxmd.com/read/33530810/postnatal-functional-status-of-the-brainstem-auditory-pathway-in-term-infants-after-perinatal-hypoxia-ischemia
#20
Ze Dong Jiang, Cui Wang
OBJECTIVES: To examine postnatal changes in the impaired brainstem auditory pathway in term infants after perinatal hypoxia-ischemia (HI). METHODS: Brainstem auditory evoked response (BAER) was studied at 2-4 months of age in term infants who suffered perinatal HI. The BAER data obtained at various click rates in these infants were compared with those in age-matched normal term controls to detect any abnormalities. RESULTS: The infants after HI showed a slight elevation in BAER threshold...
February 2, 2021: Journal of Maternal-fetal & Neonatal Medicine
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