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https://www.readbyqxmd.com/read/28651476/molecular-mechanisms-of-intrauterine-growth-restriction
#1
Rao Krishna, Vishnu Bhat
Intrauterine growth restriction (IUGR) is a pregnancy specific disease characterized by decreased growth rate of fetus than the normal growth potential at particular gestational age. In the current scenario it is a leading cause of fetal and neonatal morbidity and mortality. In the last decade exhilarating experimental studies from several laboratories have provided fascinating proof for comprehension of molecular basis of IUGR. Atypical expression of enzymes governed by TGFβ causes the placental apoptosis and altered expression of TGFβ due to hyper alimentation causes impairment of lung function...
June 26, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28651459/-examination-of-placental-three-dimensional-power-doppler-indices-and-perinatal-outcome-in-pregnancies-complicated-by-intrauterine-growth-restriction
#2
András Molnár, Andrea Surányi, Mária Jakó, Tibor Nyári, Gábor Németh
INTRODUCTION: Development of intrauterine growth restriction (IUGR) can be traced back to maternal or fetal factors, but in many cases we find placental factors (reduced placental circulation) in the background. AIM: Our aim was to examine whether the reduced placental bloodperfusion and vascularity show any correlation with cesarean section frequency and the clinical outcome in IUGR pregnancies. The aim of the present study was also to use a properly calibrated and reproducible method for evaluating placental blood flow, that can later be incorporated into the routine examination...
July 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28641979/sexual-dimorphism-in-the-fetal-cardiac-response-to-maternal-nutrient-restriction
#3
Sribalasubashini Muralimanoharan, Cun Li, Ernesto S Nakayasu, Cameron P Casey, Thomas O Metz, Peter W Nathanielsz, Alina Maloyan
Poor maternal nutrition causes intrauterine growth restriction (IUGR); however, its effects on fetal cardiac development are unclear. We have developed a baboon model of moderate maternal undernutrition, leading to IUGR. We hypothesized that the IUGR affects fetal cardiac structure and metabolism. Six control pregnant baboons ate ad-libitum (CTRL)) or 70% CTRL from 0.16 of gestation (G). Fetuses were euthanized at C-section at 0.9G under general anesthesia. Male but not female IUGR fetuses showed left ventricular fibrosis inversely correlated with birth weight...
June 19, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28639476/effects-of-folic-acid-on-dnmt1-gap43-and-vegfr1-in-intrauterine-growth-restriction-filial-rats
#4
Ying-Xue Ding, Hong Cui
OBJECTIVE: To investigate the effect of a folic acid intervention on the outcome of intrauterine growth restriction (IUGR) filial rats and changes in DNA methyltransferase 1 (DNMT1), growth-associated protein 43 (GAP43), and vascular endothelial growth factor receptor 1 (VEGFR1). METHODS: The IUGR animal model was established using a starvation method in pregnant rats. The animals were randomly divided into 4 groups: normal controls, IUGR rats, IUGR rats given folic acid, and IUGR rats given normal saline...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28627837/natural-antioxidant-vitamins-status-in-pregnancies-complicated-with-intrauterine-growth-restriction
#5
Amita K Gadhok, Tarun K Sharma, Maheep Sinha, Rakesh Khunteta, Satish K Vardey, Poonam Sahni, Manisha Sankhla
BACKGROUND: The weight of the infant at birth is a powerful predictor of infant growth and survival and is dependent on maternal health and nutrition during pregnancy. Pregnant women have a defense mechanism against increased oxidative stress composed of antioxidant enzymes and natural antioxidant vitamins like vitamin C and E. Therefore, we evaluated whether differences exist in serum levels of vitamin C and E in pregnant women complicated with intrauterine growth restriction (IUGR)...
May 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28626870/the-chicken-or-the-egg-sildenafil-therapy-for-fetal-cardiovascular-dysfunction-during-hypoxic-development-studies-in-the-chick-embryo
#6
Ryan T Sless, Nathaniel E Hayward, Paul M Ryan
Chronic hypoxia in the gestating fetus is a common occurrence which invariably leads to a variety of adverse events such as premature delivery, pulmonary hypertension, intrauterine growth restriction (IUGR) and fetal/adult cardiovascular dysfunction. This article is protected by copyright. All rights reserved.
June 19, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28623979/placental-glucose-transporter-glut-1-is-down-regulated-in-preeclampsia
#7
Benjamin P Lüscher, Camilla Marini, Marianne S Joerger-Messerli, Xiao Huang, Matthias A Hediger, Christiane Albrecht, Marc U Baumann, Daniel V Surbek
INTRODUCTION: Transplacental fetal glucose supply is predominantly regulated by glucose transporter-1 (GLUT1). Altered expression and/or function of GLUT1 may affect the intrauterine environment, which could compromise fetal development and may contribute to fetal programming. To date it is unknown whether placental GLUT1 is affected by preeclampsia, which is often associated with intrauterine growth restriction (IUGR). We addressed the hypothesis that preeclampsia leads to decreased expression and function of placental GLUT1...
July 2017: Placenta
https://www.readbyqxmd.com/read/28623975/mitochondrial-dna-content-and-methylation-in-fetal-cord-blood-of-pregnancies-with-placental-insufficiency
#8
Chiara Novielli, Chiara Mandò, Silvia Tabano, Gaia M Anelli, Laura Fontana, Patrizio Antonazzo, Monica Miozzo, Irene Cetin
INTRODUCTION: Intrauterine growth restriction (IUGR) and preeclampsia (PE) are pregnancy disorders characterized by placental insufficiency with oxygen/nutrient restriction and oxidative stress, all influencing mitochondria functionality and number. Moreover, IUGR and PE fetuses are predisposed to diseases later in life, and this might occur through epigenetic alterations. Here we analyze content and methylation of mitochondrial DNA (mtDNA), for the first time in IUGR and PE singleton fetuses, to identify possible alterations in mtDNA levels and/or epigenetic control of mitochondrial loci relevant to replication (D-loop) and functionality (mt-TF/RNR1: protein synthesis, mt-CO1: respiratory chain complex)...
July 2017: Placenta
https://www.readbyqxmd.com/read/28612833/variant-in-the-x-chromosome-spliceosomal-gene-gpkow-causes-male-lethal-microcephaly-with-intrauterine-growth-restriction
#9
Renée Carroll, Raman Kumar, Marie Shaw, Jennie Slee, Vera M Kalscheuer, Mark A Corbett, Jozef Gecz
Congenital microcephaly, with or without additional developmental defects, is a heterogeneous disorder resulting from impaired brain development during early fetal life. The majority of causative genetic variants identified thus far are inherited in an autosomal recessive manner and impact key cellular pathways such as mitosis, DNA damage response and repair, apoptosis and splicing. Here, we report a novel donor splice site variant in the G-patch domain and KOW motifs (GPKOW) gene (NG_021310.2:g.6126G>A, NM_015698...
June 14, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28609172/placental-expression-of-sflt-1-and-plgf-in-early-preeclampsia-vs-early-iugr-vs-age-matched-healthy-pregnancies
#10
Alice Hoeller, Laura Ehrlich, Michaela Golic, Florian Herse, Frank H Perschel, Monika Siwetz, Wolfgang Henrich, Ralf Dechend, Berthold Huppertz, Stefan Verlohren
OBJECTIVE: To investigate whether differences between early preeclampsia and early fetal growth restriction can be explained by differential placental expression patterns of sFlt-1, Flt-1, and PlGF. METHODS: Placental tissues and maternal blood samples from six cases of preeclampsia, seven IUGR, and six age-matched controls were studied for mRNA and protein levels as well as protein localization and expression intensity. RESULTS: Neither placental PlGF mRNA and protein expression nor placental villous trophoblast expression intensity of PlGF was altered by placental dysfunction...
May 2017: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28607782/placental-chorangiosis-increased-risk-for-cesarean-section
#11
Shariska S Petersen, Raminder Khangura, Dmitry Davydov, Ziying Zhang, Roopina Sangha
We describe a patient with Class C diabetes who presented for nonstress testing at 36 weeks and 4 days of gestation with nonreassuring fetal heart tones (NRFHT) and oligohydramnios. Upon delivery, thrombosis of the umbilical cord was grossly noted. Pathological analysis of the placenta revealed chorangiosis, vascular congestion, and 40% occlusion of the umbilical vein. Chorangiosis is a vascular change of the placenta that involves the terminal chorionic villi. It has been proposed to result from longstanding, low-grade hypoxia in the placental tissue and has been associated with such conditions such as diabetes, intrauterine growth restriction (IUGR), and hypertensive conditions in pregnancy...
2017: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28604758/intrauterine-growth-retardation-associated-syncytin-b-hypermethylation-in-maternal-rat-blood-revealed-by-dna-methylation-array-analysis
#12
Dong-Mei Wu, You-E Yan, Liang-Peng Ma, Han-Xiao Liu, Wen Qu, Jie Ping
BACKGROUND: Emerging evidence suggests that DNA methylation in maternal blood provides a promising target for intrauterine growth retardation (IUGR) screening, a common developmental toxicity. Here, we aimed to screen out IUGR-related DNA methylation status in maternal blood via high throughput profiling. METHODS: Pregnant Wistar rats were subcutaneously administered nicotine (1.0 mg/kg) twice per day from gestational day (GD) 11 to GD20 to establish the IUGR model...
June 12, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28604182/the-magnitude-of-elevated-maternal-serum-human-chorionic-gonadotropin-and-pregnancy-complications
#13
Reuven Sharony, Oren Zipper, Keren Amichay, Amir Wiser, Debora Kidron, Tal Biron-Shental, Ron Maymon
This study assessed the correlation between the magnitude of the elevation in maternal serum human chorionic gonadotropin (MShCG) levels and pregnancy complications. Among 80,716 screened pregnancies, 120 with moderately elevated MShCG (3.00-5.99 MoM) were compared to 84 with extremely elevated MShCG >6.00 MoM. A control series of 120 women with normal MShCG (<3.00 MoM) were matched. Rates of intrauterine growth restriction, preterm labour, antepartum foetal death (APFD), pre-eclampsia, and placental abruption were analysed...
July 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28600043/placenta-associated-pregnancy-complications-in-pregnancies-complicated-with-placenta-previa
#14
Yael Baumfeld, Reli Herskovitz, Zehavi Bar Niv, Salvatore Andrea Mastrolia, Adi Y Weintraub
OBJECTIVES: The purpose of our study was to examine the hypothesis that pregnancies complicated with placenta previa have an increased risk of placental insufficiency associated pregnancy complications (IUGR, preeclampsia, placental abruption and perinatal mortality). MATERIALS AND METHODS: Our study included all deliveries that occurred at Soroka University Medical Center (Beer Sheva, Israel) between January 1998 and December 2013. Of them 1,249 were complicated by placenta previa and represented our study group...
June 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28587906/-early-hypophosphataemia-in-at-risk-newborns-frequency-and-magnitude
#15
Gerardo Bustos Lozano, Álvaro Hidalgo Romero, Ana Melgar Bonis, Noelia Ureta Velasco, Carlos Orbea Gallardo, Carmen Pallás Alonso
OBJECTIVE: To determine the frequency and magnitude of neonatal hypophosphataemia (<4mg/dL) in a neonatal Intensive Care Unit and to describe risk groups. PATIENTS AND METHODS: Retrospective study of hospitalised newborns over a 44 month period (phase 1). Retrospective study of <1,500g/<32 weeks of gestation newborns over a 6 month period (phase 2). Prospective study of <1,500g or 1,550-2,000g, and intrauterine growth restriction (IUGR) newborns. Measurements were made on the 1st, 3rd, 7th, and 14th days of life (phase 3)...
June 3, 2017: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
https://www.readbyqxmd.com/read/28579623/reference-curve-for-the-mean-uterine-artery-pulsatility-index-in-singleton-pregnancies
#16
Alexander Weichert, Andreas Hagen, Michael Tchirikov, Ilka B Fuchs, Wolfgang Henrich, Michael Entezami
INTRODUCTION: Doppler sonography of the uterine artery (UA) is done to monitor pregnancies, because the detected flow patterns are useful to draw inferences about possible disorders of trophoblast invasion. Increased resistance in the UA is associated with an increased risk of preeclampsia and/or intrauterine growth restriction (IUGR) and perinatal mortality. In the absence of standardized figures, the normal ranges of the various available reference curves sometimes differ quite substantially from one another...
May 2017: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/28573882/variation-in-definition-of-intrauterine-growth-restriction-in-routine-antenatal-care-a-physician-survey-among-gynecologists-in-northwest-germany
#17
Sinja Alexandra Ernst, Tilman Brand, Knud Petersen, Hajo Zeeb
OBJECTIVE: To assess how intrauterine growth restriction (IUGR) is defined by gynecologists in routine practice. MATERIALS AND METHODS: We surveyed primary care gynecologists in Bremen and Lower Saxony, Northwest Germany, between January and July 2014. Descriptive statistics were used to analyze the data; consensus was considered as 90% agreement among the respondents. Multiple logistic regression models were performed for the associations between respondents' background characteristics and choice of the small for gestational age (SGA) cut-off values...
June 2, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28572154/novel-role-of-npy-in-neuro-immune-interaction-and-lung-growth-after-intrauterine-growth-restriction
#18
Chansutha Thangaratnarajah, Katharina Dinger, Christina Vohlen, Christian Klaudt, Jawed Nawabi, Eva Lopez Garcia, Grazyna Kwapiszewska, Julia Dobner, Kai D Nuesken, Silke van Koningsbruggen-Rietschel, Stephan von Hoersten, Jörg Dötsch, Miguel Angel Alejandre Alcazar
Individuals with intrauterine growth restriction (IUGR) are at risk for chronic lung disease. Using a rat model, our previous studies showed that altered lung structure is related to IL-6/STAT3 signaling. As Neuropeptide Y (NPY), a co-neurotransmitter of the sympathetic nerve system, regulates proliferation and immune response, we hypothesized that dysregulated NPY after IUGR is linked to IL-6, impaired myofibroblast function, and alveolar growth. IUGR was induced in rats by isocaloric low-protein diet; lungs were analyzed on embryonic day (E) 21, postnatal day (P) 3, P12 and P23...
June 1, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28571908/the-sflt-1-plgf-ratio-as-a-predictor-for-poor-pregnancy-and-neonatal-outcomes
#19
Yu-Shan Chang, Chi-Nien Chen, Suh-Fang Jeng, Yi-Ning Su, Chien-Yi Chen, Hung-Chieh Chou, Po-Nien Tsao, Wu-Shiun Hsieh
BACKGROUND: Soluble fms-like tyrosine kinase receptor-1 (sFlt-1)/placental growth factor (PlGF) ratio has been studied extensively as a predictive marker for pre-eclampsia. However, its usefulness for predicting neonatal outcomes remains unknown. This study aimed to evaluate the association of sFlt-1/PlGF ratio with pregnancy outcomes, neonatal morbidities and short-term postnatal growth patterns in pregnant women and their babies. METHODS: sFlt-1 and PlGF were measured in women with fetal intrauterine growth retardation (IUGR) or pre-eclampsia during gestational age (GA) of 16-36 weeks...
May 10, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/28565900/the-impact-of-intrauterine-growth-restriction-on-respiratory-outcomes
#20
Bárbara Oliveira, Filipa Flôr-DE-Lima, Gustavo Rocha, Manuela Rodrigues, Rita Ladeiras, Hercília Guimarães
BACKGROUND: Intrauterine growth restriction (IUGR) is caused by fetal growth below what is normal for its genetic potential. Recent studies have shown a distinct association between changes in umbilical artery flow in IUGR subjects and an increased risk of respiratory morbidity and was to find the impact of IUGR on the respiratory outcomes of premature neonates born with less than 32 weeks gestational age. METHODS: This retrospective cohort study targeted infants born with less than 32 weeks of gestation, admitted at NCIU, between January 2010 and December 2016...
May 31, 2017: Minerva Pediatrica
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