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https://www.readbyqxmd.com/read/28801976/implications-of-fetoplacental-mosaicism-on-cell-free-dna-testing-for-sex-chromosome-aneuploidies
#1
Francesca Romana Grati, Komal Bajaj, Valentina Zanatta, Francesca Malvestiti, Barbara Malvestiti, Livia Marcato, Beatrice Grimi, Federico Maggi, Giuseppe Simoni, Susan J Gross, Jose Ferreira
OBJECTIVE: The unique biological behavior of sex chromosomes has implications for cell-free DNA (cfDNA) testing. Our purpose is to predict the i) false positive/negative rates (FPR/FNR) of cfDNA testing consequent to feto-placental mosaicism for any sex chromosome anomaly (SCA) ii) positive (PPV) and negative predictive values (NPV) of a high- and low-risk cfDNA result for any SCA. METHOD: Retrospective analysis of 67030 chorionic villus sampling (CVS) karyotypes, including feto-placental mosaicism cases...
August 11, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28799251/comparison-of-anticoagulation-regimens-for-pregnant-women-with-prosthetic-heart-valves-a-meta-analysis-of-prospective-studies
#2
Jing Wang, Kangqi Li, Hongyan Li, Weiwei Zhu, Haiyan Sun, Congxiao Lu
INTRODUCTION: Pregnancy is associated with a hypercoagulable state, which makes pregnant women with prosthetic heart valves at high risk of thromboembolism. Proper anticoagulation regimen should take both the maternal protection and the fetal outcomes into consideration. However, no consensus on the present anticoagulation regimen for those women has been reached yet, especially in the first trimester of pregnancy. AIMS: The present meta-analysis is conducted to compare anticoagulation efficiency and feto-maternal complications of heparin and warfarin in the first trimester...
August 11, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28796980/ovarian-yolk-sac-tumour-in-a-girl-case-report
#3
Charu Sharma, Hemanshi Shah, Neha Sisodiya Shenoy, Deepa Makhija, Mukta Waghmare
Yolk sac tumours are rare ovarian malignancies accounting for less than 1% of malignant ovarian germ cell tumours. They are mostly seen in adolescents and young women and are usually unilateral making fertility preservation imperative. Raised alpha-feto protein level is the hallmark of this tumour. We describe stage III yolk sac tumour in a girl child.
2017: Developmental Period Medicine
https://www.readbyqxmd.com/read/28758828/second-trimester-extracellular-micrornas-in-maternal-blood-and-fetal-growth-an-exploratory-study
#4
Rodosthenis S Rodosthenous, Heather H Burris, Alison P Sanders, Allan C Just, Alexandra E Dereix, Katherine Svensson, Maritsa Solano, Martha M Téllez-Rojo, Robert O Wright, Andrea A Baccarelli
Healthy feto-maternal communication is critical during pregnancy and is orchestrated by the placenta. Dysfunction of the placenta leads to fetal growth complications; however, the underlying biological mechanisms have yet to be fully elucidated. Circulating extracellular microRNAs (exmiRNAs) in the blood have been implicated in cell-to-cell communication. Therefore, exmiRNAs may provide useful biological information about communication between the mother, the fetus, and the placenta during pregnancy. We used logistic regression to determine the association of exmiRNAs with abnormal fetal growth by comparing mothers of infants classified as small-for-gestational age (SGA) (n = 36) and large-for-gestational age (LGA) (n = 13) to appropriate-for-gestational age (AGA), matched by gestational age at delivery and infant sex...
July 31, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28744795/prediction-of-fetal-darunavir-exposure-by-integrating-human-ex-vivo-placental-transfer-and-physiologically-based-pharmacokinetic-modeling
#5
Stein Schalkwijk, Aaron O Buaben, Jolien J M Freriksen, Angela P Colbers, David M Burger, Rick Greupink, Frans G M Russel
BACKGROUND: Fetal antiretroviral exposure is usually derived from the cord-to-maternal concentration ratio. This static parameter does not provide information on the pharmacokinetics in utero, limiting the assessment of a fetal exposure-effect relationship. OBJECTIVE: The aim of this study was to incorporate placental transfer into a pregnancy physiologically based pharmacokinetic model to simulate and evaluate fetal darunavir exposure at term. METHODS: An existing and validated pregnancy physiologically based pharmacokinetic model of maternal darunavir/ritonavir exposure was extended with a feto-placental unit...
July 25, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28744256/corticotropin-releasing-hormone-as-the-homeostatic-rheostat-of-feto-maternal-symbiosis-and-developmental-programming-in-utero-and-neonatal-life
#6
REVIEW
Viridiana Alcántara-Alonso, Pamela Panetta, Patricia de Gortari, Dimitris K Grammatopoulos
A balanced interaction between the homeostatic mechanisms of mother and the developing organism during pregnancy and in early neonatal life is essential in order to ensure optimal fetal development, ability to respond to various external and internal challenges, protection from adverse programming, and safeguard maternal care availability after parturition. In the majority of pregnancies, this relationship is highly effective resulting in successful outcomes. However, in a number of pathological settings, perturbations of the maternal homeostasis disrupt this symbiosis and initiate adaptive responses with unpredictable outcomes for the fetus or even the neonate...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28736088/fetopathological-examination-for-the-fetuses-with-down-syndrome-in-tunisia-epidemiological-study-and-associated-malformations
#7
Meriem Aloui, Kaouther Nasri, Nadia Ben Jemaa, Meriem Sahraoui, Aida Masmoudi, Dorra Zghal, Dalenda Chelli, Habiba Chaâbouni, Abdel Majid Ben Hamida, Soumeya Siala Gaigi, Raja Marrakchi
BACKGROUND: For Down syndrome (DS), traditional epidemiological studies to determine the prevalence, cause, and clinical significance of the syndrome have been conducted over the last 100 years. In Tunisia, the current work is the first in-depth study in epidemiology of DS from fetopathological data. AIM OF THE STUDY: The aim of this epidemiological study was to determine the impact of some feto-maternal characteristics in occurrence of DS and to search the frequency of associated congenital malformations with this syndrome...
May 8, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28729622/three-dimensional-visualization-of-intrauterine-conceptus-through-the-uterine-wall-by-tissue-clearing-method
#8
Kyosuke Kagami, Yohei Shinmyo, Masanori Ono, Hiroshi Kawasaki, Hiroshi Fujiwara
Visualization of specific cells in the three-dimensional organ architecture is one of the key steps to develop our knowledge about pathophysiological mechanisms in various organs. In this study, we successfully obtained stereoscopic whole images of the intrauterine murine embryo and placenta through the uterus using a modified tissue clearing CUBIC method. By this procedure, we can recognize the three-dimensional relationships among various tissues within the pregnant uterus and analyze free-angle images of cross-sections with single-cell resolution using a computer system...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28715482/impact-of-maternal-body-mass-index-and-gestational-weight-gain-on-neonatal-outcomes-among-healthy-middle-eastern-females
#9
Tatiana Papazian, Georges Abi Tayeh, Darine Sibai, Hala Hout, Imad Melki, Lydia Rabbaa Khabbaz
BACKGROUND: Studies on the relative impact of body mass index in women in childbearing age and gestational weight gain on neonatal outcomes are scarce in the Middle East. OBJECTIVES: The primary objective of this research was to assess the impact of maternal body mass index (BMI) and gestational weight gain (GWG) on neonatal outcomes. The effect of maternal age and folic acid supplementation before and during pregnancy was also examined. SUBJECTS AND METHODS: This is a retrospective cross sectional observational study of 1000 full term deliveries of women enrolled thru the National Collaborative Perinatal Neonatal Network, in Lebanon...
2017: PloS One
https://www.readbyqxmd.com/read/28708577/a-one-year-review-of-eclampsia-in-an-ethiopian-tertiary-care-center-saint-paul-s-hospital-millennium-medical-college-sphmmc
#10
Thomas Mekuria, Abdulfetah Abdosh
Eclampsia remains one of the five major causes of maternal mortality in developing countries. Advances in diagnosis and management have led to a significant reduction in maternal mortality and morbidity from this disease in developed countries. In developing countries the incidence of maternal death attributed to eclampsia remains high and, in Ethiopia, maternal mortality from this complication has instead risen over the last decade. The purpose of this study was to review the incidence of eclampsia at the largest feto-maternal center in the country over 1 year in an attempt to determine what quality improvement measures are needed and could realistically be implemented within the system to decrease this complication...
July 14, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28705056/combined-use-of-nuclear-phosphoprotein-c-myc-and-cellular-phosphoprotein-p53-for-hepatocellular-carcinoma-detection-in-high-risk-chronic-hepatitis-c-patients
#11
A M Attallah, M El-Far, M A Abdelrazek, M M Omran, A A Attallah, A A Elkhouly, H M Elkenawy, K Farid
BACKGROUND: Hepatocellular carcinoma (HCC) is a multistage process resulting from various genetic changes. We aimed to determine nuclear phosphoprotein c-Myc and cellular phosphoprotein p53 expression and to evaluate their importance in HCC diagnosis. METHODS: One hundred and twenty chronic hepatitis C (CHC) patients (60 non-HCC CHC patients and 60 HCC patients who had a single small (<5 cm) tumour) were recruited. The gene products of c-Myc and p53 were identified in liver tissues and serum samples using immunostaining, western blot and ELISA...
July 13, 2017: British Journal of Biomedical Science
https://www.readbyqxmd.com/read/28699111/hla-class-ib-in-pregnancy-and-pregnancy-related-disorders
#12
REVIEW
Gry Persson, Wenna Nascimento Melsted, Line Lynge Nilsson, Thomas Vauvert F Hviid
The HLA class Ib genes, HLA-E, HLA-F, and HLA-G, were discovered long after the classical HLA class Ia genes. The elucidation of their functions had a modest beginning. However, their basic functions and involvement in pathophysiology and a range of diseases are now emerging. Although results from a range of studies support the functional roles for the HLA class Ib molecules in adult life, especially HLA-G and HLA-F have most intensively been, and were also primarily, studied in relation to reproduction and pregnancy...
July 11, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28678925/gestational-protein-restriction-increases-cardiac-connexin-43-mrna-levels-in-male-adult-rat-offspring
#13
Kamila Fernanda Rossini, Camila Andrea de Oliveira, Hércules Jonas Rebelato, Marcelo Augusto Marreto Esquisatto, Rosana Catisti
Background: The dietary limitation during pregnancy influences the growth and development of the fetus and offspring and their health into adult life. The mechanisms underlying the adverse effects of gestational protein restriction (GPR) in the development of the offspring hearts are not well understood. Objectives: The aim of this study was to evaluate the effects of GPR on cardiac structure in male rat offspring at day 60 after birth (d60). Methods: Pregnant Wistar rats were fed a normal-protein (NP, 17% casein) or low-protein (LP, 6% casein) diet...
July 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28674684/effect-of-fetal-sex-on-maternal-and-obstetric-outcomes
#14
REVIEW
Mohammed Al-Qaraghouli, Yu Ming Victor Fang
Fetal sex plays an important role in modifying the course and complications related to pregnancy and may also have an impact on maternal health and well-being both during and after pregnancy. The goal of this article is to review and summarize the findings from published research on physiologic and pathologic changes that may be affected by fetal sex and the effect of these changes on the maternal and obstetrical outcomes. This will help create awareness that fetal sex is not just a random chance event but an interactive process between the mother, the placenta, and the fetus...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28670317/safeguarding-of-fetal-growth-by-mast-cells-and-natural-killer-cells-deficiency-of-one-is-counterbalanced-by-the-other
#15
Nicole Meyer, Katja Woidacki, Marcus Maurer, Ana Claudia Zenclussen
Uterine natural killer cells (uNKs) and mast cells (uMCs) are of crucial importance for spiral artery (SA) remodeling and placentation. Mice deficient for both NKs and MCs including uNKs and uMCs show markedly impaired SA remodeling and their fetuses are growth-retarded. In contrast, the absence of either NKs or MCs results in only minor impairment. This suggests that uNKs can compensate for the effects of uMCs on SA remodeling and vice versa. To test this hypothesis, we assessed uNK numbers in uMC-deficient mice as well as uMC numbers in uNK-depleted mice...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28667126/functional-implications-of-the-relaxin-rln-system-in-the-dog-throughout-pregnancy-and-at-term
#16
Marta Nowak, Aykut Gram, Alois Boos, Selim Aslan, Serhan Serhat Ay, Firdevs Önyay, Mariusz Kowalewski
Relaxin (RLN) is a key hormone of pregnancy in mammals best known for its involvement in connective tissue remodeling. In the domestic dog, placental RLN is the only known endocrine marker of pregnancy. However, knowledge is sparse regarding the spatio-temporal expression of RLN and its receptors (RXFP1 and RXFP2) in the canine uterus and placenta. Here, their expression was investigated in the pre-implantation uterus and utero-placental compartments (UtPl) at selected time points during gestation: post-implantation, mid-gestation, and at normal and antigestagen-induced luteolysis/abortion...
June 30, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28646728/evaluation-of-the-impact-of-vasa-previa-on-feto-placental-hormonal-synthesis-and-fetal-growth
#17
Yaakov Melcer, Ron Maymon, Marina Pekar-Zlotin, Orna Levinsohn-Tavor, Josef Tovbin, Eric Jauniaux
INTRODUCTION: A vasa previa (VP) refers to aberrant chorionic vessels which can either connect the chorionic plate to a velamentous cord (type I) or a succenturiate or accessory lobe to the main placental mass (type II). METHODS: We performed retrospective cohort study of 32 singleton pregnancies diagnosed with VP. The levels of maternal serum alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG) and unconjugated estriol (uE3) were measured at 15-18 weeks as part of the triple test screening for Trisomy 21...
June 16, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28639391/an-investigation-of-the-relationship-between-recurrent-spontaneous-abortion-and-memory-t-follicular-helper-cells
#18
Xiaorui Luan, Xiaomin Kang, Weiping Li, Qian Dong
PROBLEM: Immune tolerance with respect to a semi-allogeneic fetus plays a key role in the establishment of a pregnancy. Memory T follicular helper (Tfh) cells have a central role in the regulation of the adaptive immune response. Much of our knowledge of memory Tfh cells' function comes from immune-related diseases. However, the true physiological characteristics of memory Tfh cells and their mode of action in pregnancy remain unclear. METHODS OF STUDY: Deciduas and blood were obtained from 25 recurrent spontaneous abortion (RSA) patients undergoing surgical abortion and 19 normal women in early pregnancy undergoing elective termination...
June 21, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28629240/foetoscopic-endotracheal-occlusion-feto-for-severe-isolated-left-sided-congenital-diaphragmatic-hernia-single-centre-polish-experience
#19
Przemyslaw Kosinski, Miroslaw Wielgos
OBJECTIVE: To present early experience with foetoscopic endotracheal occlusion (FETO) for congenital diaphragmatic hernia (CDH) in a new centre in Poland. METHODS: This was a prospective study in singleton pregnancies with CDH treated by FETO between 2014 and 2016 in the Medical University of Warsaw, Poland. FETO was carried out at 25.6-30.1 (median 27.7) weeks' gestation in 28 consecutive cases of isolated left-sided CDH with observed over expected lung area to head circumference ratio (o/e LHR) of 20...
June 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28628847/the-importance-of-declining-insulin-requirements-during-pregnancy-in-patients-with-pre-gestational-gestational-diabetes-mellitus
#20
Maya Ram, Larissa Feinmesser, Shiri Shinar, Sharon Maslovitz
OBJECTIVE: In patients with pre-gestational and gestational diabetes mellitus (GDM), insulin requirements often increase during the third trimester of pregnancy in order to maintain proper glycemic control. However, a fraction of patients demonstrate a significant decrease in insulin requirements in late gestation. We aimed to evaluate the clinical significance of decreasing insulin requirements in patients with pre-gestational diabetes and GDM with respect to fetal wellbeing and pregnancy outcome...
August 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
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