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Fetal restriction

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https://www.readbyqxmd.com/read/28444780/fetal-brain-injury-in-complicated-monochorionic-pregnancies-diagnostic-yield-of-prenatal-mri-following-surveillance-ultrasound-and-influence-on-prognostic-counselling
#1
Alice Robinson, Mark Teoh, Andrew Edwards, Michael Fahey, Stacy Goergen
OBJECTIVE: To determine the additional diagnostic information provided by prenatal (fetal) magnetic resonance imaging (pMRI) following tertiary ultrasound (US) for fetal cranial abnormalities in complicated monochorionic gestations (cMCGs) METHODS: Women with cMCGs complicated by twin - twin transfusion syndrome (TTTS), co-twin demise (CD), selective intrauterine growth restriction (sIUGR), and / or twin anemia - polycythemia sequence (TAPS) who were referred for pMRI after tertiary US were included...
April 26, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28443480/adverse-placental-perfusion-and-pregnancy-outcomes-in-a-new-nonhuman-primate-model-of-gestational-protein-restriction
#2
Victoria H J Roberts, Jamie O Lo, Katherine S Lewandowski, Peter Blundell, Kevin L Grove, Christopher D Kroenke, Elinor L Sullivan, Charles T Roberts, Antonio E Frias
Maternal malnutrition during pregnancy impacts fetal growth, with developmental consequences that extend to later life outcomes. In underdeveloped countries, this malnutrition typically takes the form of poor dietary protein content and quality, even if adequate calories are consumed. Here, we report the establishment of a nonhuman primate model of gestational protein restriction (PR) in order to understand how placental function and pregnancy outcomes are affected by protein deficiency. Rhesus macaques were assigned to either a control diet containing 26% protein or switched to a 13% PR diet prior to conception and maintained on this PR diet throughout pregnancy...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28443064/loss-of-vagal-sensitivity-to-cholecystokinin-in-rats-born-with-intrauterine-growth-retardation-and-consequence-on-food-intake
#3
Marième Ndjim, Camille Poinsignon, Patricia Parnet, Gwenola Le Dréan
Perinatal malnutrition is associated with low birth weight and an increased risk of developing metabolic syndrome in adulthood. Modification of food intake (FI) regulation was observed in adult rats born with intrauterine growth retardation induced by maternal dietary protein restriction during gestation and maintained restricted until weaning. Gastrointestinal peptides and particularly cholecystokinin (CCK) play a major role in short-term regulation of FI by relaying digestive signals to the hindbrain via the vagal afferent nerve (VAN)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28443017/premature-brain-aging-in-baboons-resulting-from-moderate-fetal-undernutrition
#4
Katja Franke, Geoffrey D Clarke, Robert Dahnke, Christian Gaser, Anderson H Kuo, Cun Li, Matthias Schwab, Peter W Nathanielsz
Contrary to the known benefits from a moderate dietary reduction during adulthood on life span and health, maternal nutrient reduction during pregnancy is supposed to affect the developing brain, probably resulting in impaired brain structure and function throughout life. Decreased fetal nutrition delivery is widespread in both developing and developed countries, caused by poverty and natural disasters, but also due to maternal dieting, teenage pregnancy, pregnancy in women over 35 years of age, placental insufficiency, or multiples...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28442064/nutrient-restriction-in-early-ovine-pregnancy-stimulates-c-type-natriuretic-peptide-production
#5
Sengodi Madhavan, Timothy C R Prickett, Eric A Espiner, Graham K Barrell
C-type natriuretic peptide (CNP), a paracrine growth factor promoting vasodilation and angiogenesis, is upregulated in human and ovine pregnancy in response to vascular stress or nutrient restriction (NR) in late gestation. Postulating that maternal plasma CNP products are increased by modest NR (50% of metabolisable energy requirement) early in pregnancy, and further enhanced by litter size, we studied serial changes of maternal plasma CNP in pregnant ewes receiving a normal (NC, n=12) or restricted (NR, n=13) diet from Day 30 to Day 93 or 94 of gestation...
March 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28441900/placental-nfe2l2-is-discordantly-activated-in-monochorionic-twins-with-selective-intrauterine-growth-restriction-and-possibly-regulated-by-hypoxia
#6
Jing Wu, Zhiming He, Yu Gao, Guanglan Zhang, Xuan Huang, Qun Fang
INTRODUCTION: Nuclear factor, erythroid 2 like 2 (NFE2L2) is an important transcription factor that protects cells from oxidative stress (OS). NFE2L2 deficiency in placentas is associated with pregnancy complications. We have demonstrated that elevated OS existed in placental shares of the smaller fetus in selective intrauterine growth restriction (sIUGR); however, the role of NFE2L2 in the development of sIUGR remains unknown. In this study, we examined the levels of NFE2L2 and heme oxygenase 1 (HMOX1), a major antioxidant regulated by NFE2L2, in sIUGR placentas...
April 25, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28440316/modest-and-severe-maternal-iron-deficiency-in-pregnancy-are-associated-with-fetal-anaemia-and-organ-specific-hypoxia-in-rats
#7
Andrew G Woodman, Alison S Care, Yael Mansour, Stephana J Cherak, Sareh Panahi, Ferrante S Gragasin, Stephane L Bourque
Prenatal iron-deficiency (ID) is known to alter fetal developmental trajectories, which predisposes the offspring to chronic disease in later life, although the underlying mechanisms remain unclear. Here, we sought to determine whether varying degrees of maternal anaemia could induce organ-specific patterns of hypoxia in the fetuses. Pregnant female Sprague Dawley rats were fed iron-restricted or iron-replete diets to induce a state of moderate (M-ID) or severe ID (S-ID) alongside respective controls. Ultrasound biomicroscopy was performed on gestational day (GD)20 to assess uterine and umbilical artery blood flow patterns...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28437601/maternal-hemodynamics-in-normal-pregnancies-reference-ranges-and-the-role-of-maternal-characteristics
#8
Dimuthu Vinayagam, Baskaran Thilaganathan, Oliver Stirrup, Elena Mantovani, Asma Khalil
OBJECTIVES: The main aim of this study was to construct reference ranges of the maternal central hemodynamic parameters during pregnancy. The second aim was to determine the maternal and pregnancy characteristics, which influence these hemodynamic parameters. METHODS: This was a prospective cohort study of low-risk pregnant women attending for routine antenatal care at St George's Hospital, London. The exclusion criteria included any medical disorder present at the time of study recruitment, or development of hypertension or intrauterine fetal growth restriction following study recruitment...
April 24, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28435049/exposure-of-decidualized-hiesc-to-low-oxygen-tension-and-leucine-deprivation-results-in-increased-igfbp-1-phosphorylation-and-reduced-igf-i-bioactivity
#9
Majida Abu Shehab, Kyle Biggar, Sahil Sagar Singal, Karen Nygard, Shawn Shun-Cheng Li, Thomas Jansson, Madhulika B Gupta
Phosphorylation of decidual IGFBP-1 enhances binding of IGF-I, limiting the bioavailability of this growth factor which may contribute to reduced placental and fetal growth. The mechanisms regulating decidual IGFBP-1 phosphorylation are incompletely understood. Using decidualized human immortalized endometrial stromal cell () we tested the hypothesis that low oxygen tension or reduced leucine availability, believed to be common in placental insufficiency, increase the phosphorylation of decidual IGFBP-1. Multiple reaction monitoring-MS (MRM-MS) was used to identify/quantify IGFBP-1 phosphorylation...
April 20, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28429366/analysis-of-transcriptional-activities-of-angiogenic-biomarkers-during-intrauterine-complications-leading-to-preterm-birth
#10
M Rabajdová, R Dudič, P Urban, V Dudičová, P Urdzík, M Mareková
OBJECTIVE: Pre-eclampsia, growth retardation and preterm delivery are the most common reasons leading to increased maternal and perinatal mortality. The increased expression of hypoxia induced factors, such as HIF-1, triggers the overexpression of anti-angiogenic genes. The aim of this study was to determine the transcriptional activity of individual pro- and anti-angiogenic markers (VEGF, HIF-1, sEng, Flt-1, PlGF-1) in maternal blood samples from patients with spontaneous preterm labor, preterm labor in combination with pre-eclampsia and fetal growth restriction in comparison with physiologically terminated pregnancies...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28426650/neural-injury-markers-in-intrauterine-growth-restriction-and-their-relation-to-perinatal-outcomes
#11
E Mazarico, E Llurba, R Cumplido, A Valls, J C Melchor, M Iglesias, L Cabero, E Gratacós, Md Gómez Roig
BACKGROUND: The aims of this study were to: (1) compare the concentrations of two neural injury markers, S100B protein and neuron-specific enolase (NSE), in intrauterine growth-restricted fetuses (IUGR) and in fetuses with appropriate growth-for-gestational-age (AGA), and (2) investigate potential relationships between concentrations of these markers, Doppler abnormalities, and adverse perinatal or neonatal outcomes. METHODS: This was a case-controlled, cooperative, prospective study among Spanish Maternal and Child Health Network (Retic SAMID) hospitals...
April 20, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28423052/inflammation-induced-fetal-growth-restriction-in-rats-is-associated-with-increased-placental-hif-1%C3%AE-accumulation
#12
Kevin P Robb, Tiziana Cotechini, Camille Allaire, Arissa Sperou, Charles H Graham
INTRODUCTION: Hypoxia-inducible factor 1-alpha (HIF-1α) is the oxygen-sensitive subunit of the transcription factor HIF-1, and its expression is increased in placentas from pregnancies complicated by pre-eclampsia (PE). Fetal growth restriction (FGR) and PE often share a common pathophysiology; however, it is unknown whether increased placental HIF-1α occurs in FGR. We previously demonstrated that aberrant maternal inflammation in rats resulted in altered utero-placental perfusion and FGR, both of which were prevented by administration of the nitric oxide mimetic glyceryl trinitrate (GTN)...
2017: PloS One
https://www.readbyqxmd.com/read/28420514/detection-of-mosaic-15q11-1-q11-2-deletion-encompassing-nbeap1-and%C3%A2-poteb-in-a-fetus-with-diffuse-lymphangiomatosis
#13
Chih-Ping Chen, Kuo-Gon Wang, Hsu-Kuang Huang, Cheng-Ran Peng, Schu-Rern Chern, Peih-Shan Wu, Yen-Ni Chen, Shin-Wen Chen, Chen-Chi Lee, Wayseen Wang
OBJECTIVE: We present cytogenetic and molecular cytogenetic diagnoses of mosaic deletion of chromosome 15q11.1-q11.2 in a fetus with diffuse lymphangiomatosis. CASE REPORT: A 33-year-old woman underwent amniocentesis at 22 weeks of gestation because of fetal diffuse lymphangiomatosis involving left-side chest, abdominal cavity, thigh and vulva, and intrauterine growth restriction. Amniocentesis revealed a karyotype of 46,XX,del(15) (q11.1q11.2)[9]/46,XX[26]. The mother had a karyotype of 46,XX...
April 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28419500/antepartum-management-and-obstetric-outcomes-among-pregnancies-with-down-syndrome-from-diagnosis-to-delivery
#14
Stephanie H Guseh, Sarah E Little, Katherine Bennett, Virginia Silva, Louise E Wilkins-Haug
OBJECTIVE: Little is known about the obstetric care of an ongoing pregnancy with trisomy 21. We sought to ascertain an obstetric profile for pregnancies with Down syndrome to help guide antenatal management. METHOD: Pregnancies managed for delivery with trisomy 21 between 2003 and 2014 were analyzed. We reviewed demographic data, diagnostic testing, antenatal surveillance, obstetrics outcomes, and placental pathology. T-test, chi-square, and Fisher correction were used as indicated...
April 17, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28419371/sleep-a-window-into-autonomic-control-in-children-born-preterm-and-growth-restricted
#15
Stephanie R Yiallourou, Euan M Wallace, Christie Whatley, Alexsandria Odoi, Samantha Hollis, Aidan J Weichard, Jayan Shivanandhan Muthusamy, Suraj Varma, James Cameron, Om Narayan, Rosemary Sc Horne
Study Objectives: Preterm birth and fetal growth restriction (FGR) are both associated with risk of hypertension in adulthood. Mechanisms leading to this pathology are unclear. In children aged 5-12 years, who were born preterm and FGR, we used sleep as a tool to assess autonomic control with assessment of cardiovascular structure and function. Methods: 18 children born preterm and FGR, 15 born preterm with appropriate birth weights (AGA) and 20 AGA term-born children were studied...
April 17, 2017: Sleep
https://www.readbyqxmd.com/read/28415865/-placental-gene-activity-of-significant-angiogenetic-factors-in-the-background-of-intrauterine-growth-restriction
#16
Péter Kovács, Attila Rab, Imre Szentpéteri, József Gábor Joó, László Kornya
Placental vascular endothelial growth factor A (VEGF-A) gene and endoglin gene are both overexpressed in placental samples obtained from pregnancies with intrauterine growth restriction compared to normal pregnancies. In the background of these changes a mechanism can be supposed, in which the increased endoglin activity in intrauterine growth restriction (IUGR) leads to impaired placental circulation through an antioangiogenetic effect. This results in the development of placental vascular dysfunction and chronic fetal hypoxia...
April 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28413694/first-neonatal-demise-with-travel-associated-zika-virus-infection-in-the-united-states-of-america
#17
Nikolaos Zacharias, Janice Whitty, Sarah Noblin, Sophia Tsakiri, Jose Garcia, Michael Covinsky, Meenakshi Bhattacharjee, David Saulino, Nina Tatevian, Sean Blackwell
Zika virus is increasingly recognized as a fetal pathogen worldwide. We describe the first case of neonatal demise with travel-associated Zika virus infection in the United States of America, including a novel prenatal ultrasound finding. A young Latina presented to our health care system in Southeast Texas for prenatal care at 23 weeks of gestation. Fetal Dandy-Walker malformation, asymmetric cerebral ventriculomegaly, single umbilical artery, hypoechoic fetal knee, dorsal foot edema, and mild polyhydramnios were noted upon initial screening prenatal sonography at 26 weeks...
April 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28412885/antenatal-taurine-supplementation-in-fetal-rats-with-growth-restriction-improves-neural-stem-cell-proliferation-by-inhibiting-the-activities-of-rho-family-factors
#18
Yan Wang, Xiang-Wen Li, Jing Liu, Wei Fu
OBJECTIVE: To investigate whether antenatal taurine supplementation improves neural stem cell proliferation in rats with fetal growth restriction (FGR) through regulating the activity of Rho family factors. METHODS: FGR models were established via food restriction throughout pregnancy. Pregnant rats were randomly divided into the control group, the FGR group (given 40% of the normal daily feeding in the control group), and the Taurine group (FGR model treated with 300 mg/kg·d taurine from gestational day seven)...
April 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28411382/interaction-between-maternal-and-paternal-shmt1-c1420t-predisposes-to-neural-tube-defects-in-the-fetus-evidence-from-case-control-and-family-based-triad-approaches
#19
Prasoona K Rebekah, Sunitha Tella, Srinadh Buragadda, Muni Kumari Tiruvatturu, Jyothy Akka
BACKGROUND: Neural tube defects (NTDs) are caused by the failure of neural tube formation which occurs during early embryonic development. NTDs are the most severe and leading cause of fetal mortality. Serine hydroxymethyl transferase (SHMT1) provides one-carbon units necessary for embryogenesis and defects in one-carbon production result in specific pathological conditions during pregnancy. The present study is aimed to evaluate the association of SHMT1 C1420T with NTD risk in the fetus using fetal, maternal and paternal groups by applying both case-control and family-based triad approaches...
April 14, 2017: Birth Defects Res
https://www.readbyqxmd.com/read/28409154/suspected-fetal-growth-restriction-at-37-weeks-a-comparison-of-doppler-and-placental-pathology
#20
William M Curtin, Karmaine A Millington, Tochi O Ibekwe, Serdar H Ural
Objective. Our objective was determining if abnormal Doppler evaluation had a higher prevalence of placental pathology compared to normal Doppler in suspected fetal growth restriction (FGR) of cases delivered at 37 weeks. Study Design. This retrospective cohort study of suspected FGR singletons with antenatal Doppler evaluation delivered at 37 weeks had a primary outcome of the prevalence of placental pathology related to FGR. Significance was defined as p ≤ 0.05. Results. Of 100 pregnancies 46 and 54 were in the abnormal and normal Doppler cohorts, respectively...
2017: BioMed Research International
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