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maternal tolerance

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https://www.readbyqxmd.com/read/28326648/changes-in-expression-of-the-cd200-tolerance-signaling-molecule-and-its-receptor-cd200r-by-villus-trophoblasts-during-first-trimester-missed-abortion-and-in-chronic-histiocytic-intervillositis
#1
David A Clark, Jennifer M Dmetrichuk, Elizabeth McCready, Sukhbinder Dhesy-Thind, Jorge L Arredondo
PROBLEM: Expression of CD200 at the feto-maternal interface is associated with successful murine and human pregnancy. CD200 binding to CD200 receptors on lymphomyeloid cells suppresses inflammation and induces Tregs. CD200 receptors are also expressed on mouse and human placental trophoblast cells. What is the expression of CD200 and CD200R in human missed abortions which have preserved Treg levels and in chronic histiocytic intervillositis (CHI) where maternal inflammatory cells cause IUGR? METHODS: Immunohistiochemistry for CD200, CD200R, and Ki67 using human placental sections from missed abortions, term placenta, and CHI...
March 22, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28323672/safety-interventions-on-the-labor-and-delivery-unit
#2
Rachel M Kacmar
PURPOSE OF REVIEW: The present review highlights recent advances in efforts to improve patient safety on labor and delivery units and well tolerated care for pregnant patients in general. RECENT FINDINGS: Recent studies in obstetric patient safety have a broad focus but repetitive themes for interdisciplinary training include: simulating critical events, having open multidisciplinary communication, frequent reviews of cases of maternal morbidity, and implementing maternal early warning systems...
March 18, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28320484/nutritional-intervention-preconception-and-during-pregnancy-to-maintain-healthy-glucose-metabolism-and-offspring-health-nipper-study-protocol-for-a-randomised-controlled-trial
#3
Keith M Godfrey, Wayne Cutfield, Shiao-Yng Chan, Philip N Baker, Yap-Seng Chong
BACKGROUND: Improved maternal nutrition and glycaemic control before and during pregnancy are thought to benefit the health of the mother, with consequent benefits for infant body composition and later obesity risk. Maternal insulin resistance and glycaemia around conception and in early pregnancy may be key determinants of maternal physiology and placental function, affecting fetal nutrient supply and maternal-feto-placental communications throughout gestation, with implications for later postnatal health...
March 20, 2017: Trials
https://www.readbyqxmd.com/read/28301843/specialty-based-variation-in-applying-maternal-fetal-surgery-trial-evidence
#4
Ryan M Antiel, Alan W Flake, Mark P Johnson, Nahla Khalek, Natalie E Rintoul, John D Lantos, Farr A Curlin, Jon C Tilburt, Chris Feudtner
INTRODUCTION: The Management of Myelomeningocele Study (MOMS) compared prenatal with postnatal surgery for fetal myelomeningocele (MMC). We sought to understand how subspecialists interpreted the trial results and whether their practice has changed. MATERIALS AND METHODS: Cross-sectional, mailed survey of 1,200 randomly selected maternal-fetal medicine (MFM) physicians, neonatologists, and pediatric surgeons. RESULTS: Of 1,176 eligible physicians, 670 (57%) responded...
March 17, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28298162/expression-and-significance-of-dendritic-cells-and-th17-treg-in-serum-and-placental-tissues-of-patients-with-intrahepatic-cholestasis-of-pregnancy
#5
Xiang Kong, Yan Kong, Fangyuan Zhang, Tingting Wang, Xiaotong Zhu
PURPOSE: Dendritic cells (DCs) are involved in immune system, which can also regulate the differentiation of T helper 17 (Th17) and regulatory T cells (Treg). DCs and Th17/Treg participate in preeclampsia and recurrent spontaneous abortion (RSA), but there is still lack of research in intrahepatic cholestasis of pregnancy (ICP). The aim was to evaluate the expression and significance of CD83(+)DCs, CD1a(+)DCs, interleukin-17 (IL-17) and IL-35 in serum and placental tissues of patients with ICP...
March 15, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28296923/screening-gestational-diabetes-mellitus-the-role-of-maternal-age
#6
Chun-Heng Kuo, Szu-Chi Chen, Chi-Tai Fang, Feng-Jung Nien, En-Tzu Wu, Shin-Yu Lin, Lee-Ming Chuang, Chien-Nan Lee, Hung-Yuan Li
OBJECTIVE: Using a specific cutoff of fasting plasma glucose (FPG) to screen gestational diabetes mellitus (GDM) can reduce the use of oral glucose tolerance tests (OGTT). Since the prevalence of GDM increases with age, this screening method may not be appropriate in healthcare systems where women become pregnant at older ages. Therefore, we aimed to develop a screening algorithm for GDM that takes maternal age into consideration. METHODS: We included 945 pregnant women without history of GDM who received 75g OGTT to diagnose GDM in 2011...
2017: PloS One
https://www.readbyqxmd.com/read/28296735/remifentanil-analgesia-during-external-cephalic-version-for-breech-presentation-in-nulliparous-women-at-term-a-randomized-controlled-trial
#7
Zhi-Hong Wang, Yi Yang, Gui-Ping Xu
BACKGROUND: The aim of the study was to assess the efficacy and safety of remifentanil for pain relief during external cephalic version (ECV) for breech presentation in nulliparous women at term. METHODS: A total of 144 nulliparous women with singleton breech presentation were randomly divided into the intervention group and the placebo group, with 72 subjects in each group. The subjects in the intervention group received remifentanil (infused at 0.1 μg kg min with demand boluses of 0...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28279981/in-utero-exposure-to-maternal-hyperglycemia-increases-childhood-cardiometabolic-risk-in-offspring
#8
Wing Hung Tam, Ronald Ching Wan Ma, Risa Ozaki, Albert Martin Li, Michael Ho Ming Chan, Lai Yuk Yuen, Terence Tzu Hsi Lao, Xilin Yang, Chung Shun Ho, Gregory Emanuele Tutino, Juliana Chung Ngor Chan
OBJECTIVE: The objective of this study was to evaluate the effect of maternal hyperglycemia during pregnancy on cardiometabolic risk in offspring during early childhood. RESEARCH DESIGN AND METHODS: A total of 970 mothers who had joined the Hyperglycemia and Adverse Pregnancy Outcome study were reevaluated, together with their child born during the study period, 7 years after delivery. RESULTS: Offspring born to mothers diagnosed with gestational diabetes mellitus (GDM), as defined by World Health Organization 2013, had higher rates of abnormal glucose tolerance (4...
March 9, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28279591/hla-g-at-the-interface-of-maternal-fetal-tolerance
#9
REVIEW
Leonardo M R Ferreira, Torsten B Meissner, Tamara Tilburgs, Jack L Strominger
During pregnancy, semiallogeneic fetal extravillous trophoblasts (EVT) invade the uterine mucosa without being rejected by the maternal immune system. Several mechanisms were initially proposed by Peter Medawar half a century ago to explain this apparent violation of the laws of transplantation. Then, three decades ago, an unusual human leukocyte antigen (HLA) molecule was identified: HLA-G. Uniquely expressed in EVT, HLA-G has since become the center of the present understanding of fetus-induced immune tolerance...
March 6, 2017: Trends in Immunology
https://www.readbyqxmd.com/read/28279160/sex-hormone-binding-globulin-as-a-valuable-biochemical-marker-in-predicting-gestational-diabetes-mellitus
#10
Manal Abdalla Tawfeek, Eman Mohamad Alfadhli, Abdulfatah Marawan Alayoubi, Hesham Ahmad El-Beshbishy, Fawzia Ahmad Habib
BACKGROUND: Circulating Sex hormone binding globulin (SHBG) levels are inversely associated with insulin resistance. This study was conducted to compare maternal serum SHBG level between pregnant women with normal glucose tolerance and those with gestational diabetes (GDM) and to investigate the roll of SHBG in GDM diagnosis. METHODS: This was a case controlled study of 90 pregnant women, 45 women with GDM and 45 matched controls, attending obstetrics clinic at Ohud Hospital, Madina, Saudi Arabia between April 2014 and March 2015...
March 9, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/28272722/study-on-the-relationship-between-the-expression-of-igf-1-in-umbilical-cord-blood-and-abnormal-glucose-metabolism-during-pregnancy
#11
K Liu, H-Y Wu, Y-H Xu
OBJECTIVE: To explore the relationship between the expression of insulin-like growth factor-1 (IGF-1) in neonatal umbilical cord blood and abnormal glucose metabolism during pregnancy. PATIENTS AND METHODS: We have selected 63 cases of delivery randomly, term birth and maternal from January 2015 to January 2016 in our hospital, gestational diabetes mellitus for Group A, abnormal gestational glucose tolerance for Group B and normal for Group C with 21 cases in each group...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28271419/pre-eclampsia-the-potential-of-gsno-reductase-inhibitors
#12
REVIEW
Thomas R Everett, Ian B Wilkinson, Christoph C Lees
PURPOSE OF REVIEW: Pre-eclampsia remains a leading worldwide cause of maternal death and of perinatal morbidity. There remains no definitive treatment except delivery of the fetus. RECENT FINDINGS: Recent insights into the cardiovascular changes that are evident prior to, during, and persist after pre-eclampsia have improved understanding of the underlying pathophysiology-disruption of normal endothelial function and decreased nitric oxide bioavailability. S-nitrosoglutathione (GSNO) is an endogenous S-nitrosothiol that acts as a NO pool and, by replenishing or preventing the breakdown of GSNO, endothelial dysfunction can be ameliorated...
March 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28268202/adverse-effects-of-parental-zinc-deficiency-on-metal-homeostasis-and-embryonic-development-in-a-zebrafish-model
#13
Laura M Beaver, Yasmeen M Nkrumah-Elie, Lisa Truong, Carrie L Barton, Andrea L Knecht, Greg D Gonnerman, Carmen P Wong, Robert L Tanguay, Emily Ho
The high prevalence of zinc deficiency is a global public health concern, and suboptimal maternal zinc consumption has been associated with adverse effects ranging from impaired glucose tolerance to low birthweights. The mechanisms that contribute to altered development and poor health in zinc deficient offspring are not completely understood. To address this gap, we utilized the Danio rerio model and investigated the impact of dietary zinc deficiency on adults and their developing progeny. Zinc deficient adult fish were significantly smaller in size, and had decreases in learning and fitness...
February 20, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28267875/loggerhead-sea-turtle-embryos-caretta-caretta-regulate-expression-of-stress-response-and-developmental-genes-when-exposed-to-a-biologically-realistic-heat-stress
#14
Blair P Bentley, Brian J Haas, Jamie N Tedeschi, Oliver Berry
Oviparous reptile embryos are expected to breach their critical thermal maxima if temperatures reach those predicted under current climate change models due to the lack the maternal buffering processes and parental care. Heat shock proteins (HSPs) are integral in the molecular response to thermal stress, and their expression is heritable, but the roles of other candidate families such as the heat shock factors (HSFs) have not been determined in reptiles. Here we subject embryonic sea turtles (Caretta caretta) to a biologically realistic thermal stress and employ de novo transcriptomic profiling of brain tissue to investigate the underlying molecular response...
March 7, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28267635/associations-between-fetal-hla-g-genotype-and-birth-weight-and-placental-weight-in-a-large-cohort-of-pregnant-women-possible-implications-for-hla-diversity
#15
Johanne Emmery, Ole B Christiansen, Line Lynge Nilsson, Mette Dahl, Peter Skovbo, Anna Margrethe Møller, Rudi Steffensen, Thomas Vauvert F Hviid
Birth weight and placental weight are crucial parameters for the survival of fetuses and newborns in mammals. High variation in the MHC is important for an effective adaptive immune response. The maternal immune system must be controlled in relation to the semi-allogenic fetus. The immunoregulatory HLA/MHC class Ib gene, HLA-G, is strongly expressed on extravillous trophoblast cells. We investigated birth weight and placental weight of the newborns in mothers heterozygous for an HLA-G 14bp insertion (Ins)/deletion (Del) gene polymorphism...
February 20, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28261314/maternal-high-fat-diet-intensifies-the-metabolic-response-to-stress-in-male-rat-offspring
#16
Roxana Karbaschi, Homeira Zardooz, Fariba Khodagholi, Leila Dargahi, Mina Salimi, FatemehSadat Rashidi
BACKGROUND: The mother's consumption of high-fat food can affect glucose metabolism and the hypothalamic-pituitary-adrenal axis responsiveness in the offspring and potentially affect the metabolic responses to stress as well. This study examines the effect of maternal high-fat diet on the expression of pancreatic glucose transporter 2 and the secretion of insulin in response to stress in offspring. METHODS: Female rats were randomly divided into normal and high-fat diet groups and were fed in accordance with their given diets from pre-pregnancy to the end of lactation...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28261223/regulatory-b-cells-in-pregnancy-lessons-from-autoimmunity-graft-tolerance-and-cancer
#17
REVIEW
Ruth Marian Guzman-Genuino, Kerrilyn R Diener
The success of pregnancy is contingent on the maternal immune system recognizing and accommodating a growing semi-allogeneic fetus. Specialized subsets of lymphocytes capable of negative regulation are fundamental in this process, and include the regulatory T cells (Tregs) and potentially, regulatory B cells (Bregs). Most of our current understanding of the immune regulatory role of Bregs comes from studies in the fields of autoimmunity, transplantation tolerance, and cancer biology. Bregs control autoimmune diseases and can elicit graft tolerance by inhibiting the differentiation of effector T cells and dendritic cells (DCs), and activating Tregs...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28260455/triplet-pregnancy-in-a-diabetic-mother-with-kidney-transplant-case-report-and-review-of-the-literature
#18
Tarek Mahmoud, Khalida Mujaibel, Hosam Attia, Zakaria Zakaria, Jude Yagan, Osama Gheith, Medhat Abdel Halim, Prasad Nair, Torki Al-Otaibi
Triplet and higher-order multiple pregnancies can carry increased fetal and maternal complications. Reports of triplet pregnancies after kidney transplant are scarce and have been associated with perinatal complications. Presence of diabetes in such cases worsens both fetal and maternal outcomes. Here, we present a triplet pregnancy in a kidney transplant recipient with diabetes. We also reviewed the literature for causes, prevalence, and outcomes in association with chronic kidney disease, kidney transplant, and diabetes mellitus...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28241390/patterns-of-parental-care-in-neotropical-glassfrogs-fieldwork-alters-hypotheses-of-sex-role-evolution
#19
Jesse Delia, Laura Bravo-Valencia, Karen M Warkentin
Many animals provide parental care to offspring. Parental sex-roles vary extensively across taxa, and such patterns are considered well documented. However, information on amphibians is lacking relative to other vertebrate groups. We combine natural history observations with functional and historical analyses to examine the evolution of egg care in glassfrogs (Centrolenidae). Parental care was considered rare and predominately provided by males. Our field observations of 40 species revealed that care occurs throughout the family, and the caregiving sex changes across lineages...
February 27, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28239403/lipid-overload-during-gestation-and-lactation-can-independently-alter-lipid-homeostasis-in-offspring-and-promote-metabolic-impairment-after-new-challenge-to-high-fat-diet
#20
Laís Angélica de Paula Simino, Thaís de Fante, Marina Figueiredo Fontana, Fernanda Oliveira Borges, Márcio Alberto Torsoni, Marciane Milanski, Lício Augusto Velloso, Adriana Souza Torsoni
BACKGROUND: Nutritional status in early life is critically involved in the metabolic phenotype of offspring. However the changes triggered by maternal consumption of high-fat diet (HFD) in pre- or postnatal period should be better understood. Here we evaluated whether maternal HFD consumption during gestation and lactation could differently affect liver miR-122 and miR-370 expression leading to metabolic damages observed in offspring. Moreover, we investigate whether early overnutrition program offspring to more harmful response to HFD in later life...
2017: Nutrition & Metabolism
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