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https://www.readbyqxmd.com/read/27905000/decidual-natural-killer-cells-and-the-immune-microenvironment-at-the-maternal-fetal-interface
#1
REVIEW
Binqing Fu, Haiming Wei
During early pregnancy, an orchestrated evolutionary maternal adaption toward tolerance of the semiallogeneic fetus is required to ensure decidualization and early embryo development. Remodeling of the immune system involves natural killer cells (NKs), macrophages, T cells and dendritic cells (DCs) altering the microenvironment in the deciduas. In particular, a unique population of NK cells with a CD56(bright)CD16(-) phenotype in the decidua has been proposed to play a key role in the maternal adaptation to pregnancy...
November 29, 2016: Science China. Life Sciences
https://www.readbyqxmd.com/read/27903743/uric-acid-crystals-induce-placental-inflammation-and-alter-trophoblast-function-via-an-il-1-dependent-pathway-implications-for-fetal-growth-restriction
#2
Marie-Eve Brien, Cyntia Duval, Julia Palacios, Ines Boufaied, Andrée-Anne Hudon-Thibeault, Mathieu Nadeau-Vallée, Cathy Vaillancourt, Colin P Sibley, Vikki M Abrahams, Rebecca L Jones, Sylvie Girard
Excessive placental inflammation is associated with several pathological conditions, including stillbirth and fetal growth restriction. Although infection is a known cause of inflammation, a significant proportion of pregnancies have evidence of inflammation without any detectable infection. Inflammation can also be triggered by endogenous mediators, called damage associated molecular patterns or alarmins. One of these damage-associated molecular patterns, uric acid, is increased in the maternal circulation in pathological pregnancies and is a known agonist of the Nlrp3 inflammasome and inducer of inflammation...
November 30, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27902356/luciferase-tagged-wild-type-and-tropism-deficient-mouse-cytomegaloviruses-reveal-early-dynamics-of-host-colonization-following-peripheral-challenge
#3
Helen Farrell, Martha Oliveira, Kate Macdonald, Joseph Yunis, Michael Mach, Kimberley Bruce, Philip Stevenson, Rhonda Cardin, Nicholas Davis-Poynter
Cytomegaloviruses (CMVs) establish persistent, systemic infections and cause disease by maternal-fetal transfer, suggesting that their dissemination is a key target for anti-viral intervention. Late clinical presentation has meant that human CMV dissemination is not well understood. Murine CMV provides a tractable model. Whole mouse imaging of virus-expressed luciferase has proved a useful way to track systemic infections. MCMV, in which the abundant lytic gene M78 was luciferase tagged via a self-cleaving peptide (M78-LUC), allowed serial, unbiased imaging of systemic and peripheral infection without significant virus attenuation...
October 26, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27891347/decidual-cd56-natural-killer-cells-in-spontaneous-early-pregnancy-loss-an-immunohistochemical-study
#4
Balamurugan Senthilnayagam, Sridhar Karthikeyan, Jayapriya Sukumaran, Anoop Srivalsan, Ramesh Rao, Vasantha Subbiah
INTRODUCTION: Natural killer cells are believed to promote placental and trophoblastic growth and provide immune- modulation at maternal-fetal interface in pregnancy and their role in reproductive failure has been a matter of discussion. AIM: To study CD56+ Natural killer cells in spontaneous pregnancy loss. MATERIALS AND METHODS: In this prospective observational study, formalin-fixed paraffin embedded sections from products of conception from twenty women each with spontaneous early pregnancy loss (test group) and elective pregnancy termination (control group)...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27889462/maternal-and-umbilical-cord-blood-levels-of-mercury-manganese-iron-and-copper-in-southern-taiwan-a-cross-sectional-study
#5
Shih-Hui Huang, Ken-Pen Weng, Ching-Chiang Lin, Chung-Cheng Wang, Charles Tzu-Chi Lee, Luo-Ping Ger, Ming-Tsang Wu
BACKGROUND: The effect of maternal exposure to essential minerals and heavy metals on fetus is an important issue, which affects women around the world. Few data are available on the concentration of both essential minerals and heavy metals in maternal/fetal medicine. The aims of this study were to (1) assess the correlation of mercury (Hg), manganese (Mn), iron (Fe), and copper (Cu) in paired maternal/fetal blood samples, and (2) study potential confounding factors during pregnancy. METHODS: Our study recruited 145 healthy pregnant women with a mean age of 28...
November 23, 2016: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/27888706/position-for-labor-and-birth-state-of-knowledge-and-biomechanical-perspectives
#6
REVIEW
David Desseauve, Laetitia Fradet, Patrick Lacouture, Fabrice Pierre
This review aims to examine how childbirth position during labour affects maternal, fetal and neonatal outcomes. Epidemiological data suggest that vertical birthing positions have many benefits. But when we consider the players and mechanisms of delivery, including the forces generated to move the fetus and obstacles to its progression, many questions remain about the advantage of one position over another. Thus, childbirth could be considered in a way as an athletic feat that probably requires the choice of optimal positions...
November 15, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27871268/metformin-and-dietary-advice-to-improve-insulin-sensitivity-and-promote-gestational-restriction-of-weight-among-pregnant-women-who-are-overweight-or-obese-the-grow-randomised-trial
#7
Jodie M Dodd, Rosalie M Grivell, Andrea R Deussen, Gustaaf Dekker, Jennie Louise, William Hague
BACKGROUND: Obesity is a significant global health problem, with approximately 50% of women entering pregnancy having a body mass index greater than or equal to 25 kg/m(2). Obesity during pregnancy is associated with a well-recognised increased risk of adverse health outcomes both for the woman and her infant. Currently available data from large scale randomised trials and systematic reviews highlight only modest effects of antenatal dietary and lifestyle interventions in limiting gestational weight gain, with little impact on clinically relevant pregnancy outcomes...
November 21, 2016: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/27868224/evaluation-of-levator-ani-muscle-throughout-the-different-stages-of-labor-by-transperineal-3d-ultrasound
#8
José Antonio García Mejido, Carmen M Suárez Serrano, Ana Fernéndez Palacín, Adriana Aquise Pino, María José Bonomi Barby, José Antonio Sainz Bueno
OBJECTIVE: Description and assessment by 3-D transperineal ultrasound of modifications suffered by pelvic floor muscles during the passage of the fetal head through the birth canal during the second stage of labor, as well as the identification of the precise moment in which levator ani muscle avulsion takes place. MATERIALS AND METHODS: Patients included were 35 primigravidae, recruited during the first stage of labor, with at term pregnancy (37-42 weeks), without serious maternal-fetal pathology and cephalic presentation...
November 21, 2016: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/27865988/persistent-and-new-onset-daytime-sleepiness-in-pregnant-women-a-prospective-observational-cohort-study
#9
Shao-Yu Tsai, Pei-Lin Lee, Jou-Wei Lin, Chien-Nan Lee
BACKGROUND: Daytime sleepiness is a frequent complaint in women during pregnancy. It has also been linked to negative obstetric consequences. Although high prevalence of excessive daytime sleepiness throughout pregnancy is well-documented, neither the causes of persistent daytime sleepiness nor new-onset daytime sleepiness during pregnancy have been investigated. Identifying predictive factors may play an important role in the management of daytime sleepiness in pregnant women and improve prenatal care and maternal-fetal outcomes...
November 8, 2016: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/27865347/gestational-food-restriction-decreases-placental-interleukin-10-expression-and-markers-of-autophagy-and-endoplasmic-reticulum-stress-in-murine-intrauterine-growth-restriction
#10
Alison Chu, Shanthie Thamotharan, Amit Ganguly, Madhuri Wadehra, Matteo Pellegrini, Sherin U Devaskar
Intrauterine growth restriction (IUGR) affects up to 10% of pregnancies and often results in short- and long-term sequelae for offspring. The mechanisms underlying IUGR are poorly understood, but it is known that healthy placentation is essential for nutrient provision to fuel fetal growth, and is regulated by immunologic inputs. We hypothesized that in pregnancy, maternal food restriction (FR) resulting in IUGR would decrease the overall immunotolerant milieu in the placenta, leading to increased cellular stress and death...
October 2016: Nutrition Research
https://www.readbyqxmd.com/read/27864828/maternal-na-intake-induces-renal-function-injury-in-rats-prevented-by-a-short-term-angiotensin-converting-enzyme-inhibitor
#11
Natalie E Ribeiro, E V Cabral, Regina S Aires, Leucio D Vieira-Filho, Valdilene S Ribeiro, Daianna R M Gonçalves, Luis P N C Borges, Ismaela M F Melo, Cintia G M Ferreira, Valeria Wanderley-Teixeira, Álvaro A C Teixeira, Anísio F Soares, Ana D O Paixão
The Na(+) -ATPase, a secondary pump in the proximal tubule, is only weakly responsive to angiotensin II in adult offspring exposed perinatally to high Na(+) intake. We have investigated whether the offspring from mothers given 0.3 M NaCl show an ineffective angiotensin II action to increase in blood pressure. It was hypothesized that functional alterations at adult life are associated with the number angiotensin II-positive cells in the developing kidney, with increased oxidative stress in maternal/foetal organs, or with morphometrical changes in placentas...
November 19, 2016: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/27863107/heterogeneity-of-glycometabolism-in-patients-with-gestational-diabetes-mellitus
#12
Yan Yan, Zhou Liu, Daqing Liu
BACKGROUND: To evaluate the glycometabolism and outcomes of gestational diabetes mellitus (GDM) patients according to the International Association of Diabetes and Pregnancy Study Group (IADPSG) criteria in China. METHODS: According to the results of a 75-g OGTT, 1683 pregnant women were divided into three groups: an increment GDM group (patients meet the IADPSG criteria but not the previous Chinese criteria), a stock GDM group (patients meet both criteria), and a normal glucose tolerance (NGT) group...
November 10, 2016: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/27859463/how-many-procedures-does-it-take-success-of-a-cvs-training-program-for-maternal-fetal-medicine-fellows
#13
Alexis C Gimovsky, Sindy C Moreno, Sara Nicholas, Amanda Roman, Stuart Weiner
OBJECTIVES: To quantify the learning curve for a training program for Maternal Fetal Medicine (MFM) fellows in obtaining successful transvaginal chorionic villus sampling (CVS) results in women with early pregnancy failure (EPF). METHODS: Retrospective observational cohort study of transvaginal CVS and subsequent manual vacuum aspiration (MVA) performed by MFM fellows. CVS samples were sent for karyotype, and products of conception (POC) were sent if CVS sample did not yield a result...
November 16, 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27859042/hla-g-promotes-myeloid-derived-suppressor-cell-mdsc-accumulation-and-suppressive-activity-during-human-pregnancy-through-engagement-of-the-receptor-ilt4
#14
Natascha Köstlin, Anna-Lena Ostermeir, Bärbel Spring, Julian Schwarz, Alexander Marmé, Christina B Walter, Christian F Poets, Christian Gille
Establishing and maintaining maternal-fetal tolerance is essential for a successful pregnancy; failure of immunological adaptation to pregnancy leads to severe complications such as abortion or preterm delivery. Myeloid-derived suppressor cells (MDSCs) are innate immune cells that suppress T-cell responses, expand during pregnancy and thus may play a role in tolerance induction. Human leucocyte antigen G (HLA-G) is a major histocompatibility complex (MHC) I molecule with immune-modulatory properties, which is expressed during pregnancy...
November 10, 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27855463/association-of-maternal-obesity-with-child-cerebral-palsy-or-death
#15
Jessica A McPherson, Marcela C Smid, Sarah Smiley, David M Stamilio
Objective The primary aim of this study was to determine if there is an association between maternal obesity and cerebral palsy or death in children. Study Design This is a retrospective cohort analysis of a randomized controlled clinical trial previously performed by the Maternal-Fetal Medicine Units Network. Women in the original trial were included if at high risk for preterm delivery. The present study included singletons enrolled in the original study with complete data. Obese and nonobese women were compared...
November 17, 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27836660/decreased-nutrient-intake-is-associated-with-premature-cervical-remodeling
#16
Mary Dawn Koenig, Barbara L McFarlin, Alana D Steffen, Lisa Tussing-Humphreys, Carmen Giurgescu, Christopher G Engeland, Michelle A Kominiarek, Christina Ciezczak-Karpiel, William D O'Brien, Rosemary White-Traut
OBJECTIVE: To examine the direct relationship between nutrient intake and cervical remodeling. DESIGN: Longitudinal descriptive design. SETTING: Maternal-fetal medicine clinic in a Midwestern urban city. PARTICIPANTS: Forty-seven pregnant African American women. METHODS: Participants completed the Block brief food frequency questionnaire at 19 to 24 weeks and 27 to 29 weeks gestation and had quantitative ultrasonic attenuation estimates at 19 to 21 weeks, 23 to 25 weeks, 27 to 29 weeks, 31 to 33 weeks, and 35 to 37 weeks gestation...
November 8, 2016: Journal of Obstetric, Gynecologic, and Neonatal Nursing: JOGNN
https://www.readbyqxmd.com/read/27836659/iron-metabolism-in-african-american-women-in-the-second-and-third-trimesters-of-high-risk-pregnancies
#17
Lauren Welke, Mary Dawn Koenig, Jessica L Thomson, Elizabeta Nemeth, Rosemary White-Traut, Barbara L McFarlin, Carmen Giurgescu, Christopher Engeland, Michelle A Kominiarek, Lisa Tussing-Humphreys
OBJECTIVE: To examine iron metabolism during the second and third trimesters in African American women with high-risk pregnancies. DESIGN: Longitudinal pilot study. SETTING: Large, university-based, urban Midwestern U.S. medical center. PARTICIPANTS: Convenience sample of 32 African American women with high-risk pregnancies seeking care at an urban maternal-fetal medicine clinic. METHODS: Nonfasting venous blood was collected in the second and third trimesters to assess iron status, hepcidin, and systemic inflammation...
November 8, 2016: Journal of Obstetric, Gynecologic, and Neonatal Nursing: JOGNN
https://www.readbyqxmd.com/read/27829441/characterization-of-exosomal-release-in-bovine-endometrial-intercaruncular-stromal-cells
#18
Yong Qin Koh, Hassendrini N Peiris, Kanchan Vaswani, Sarah Reed, Gregory E Rice, Carlos Salomon, Murray D Mitchell
BACKGROUND: Cell-to-cell communication between the blastocyst and endometrium is critical for implantation. In recent years, evidence has emerged from studies in humans and several other animal species that exosomes are secreted from the endometrium and trophoblast cells and may play an important role in cell-to-cell communication maternal-fetal interface during early pregnancy. Exosomes are stable extracellular lipid bilayer vesicles that encapsulate proteins, miRNAs, and mRNAs, with the ability to deliver their cargo to near and distant sites, altering cellular function(s)...
November 9, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27827548/is-preterm-labor-influenced-by-the-maternal-fetal-interface
#19
Ana Luísa Areia, Pedro Rodrigues, Ana Alarcão, Ana Ladeirinha, Paulo Moura, Lina Carvalho
Preterm labor (PTL) accounts for almost 11% of deliveries, and is a major cause of neonatal morbidity and mortality. T regulatory (Treg) cells may prevent fetal rejection by the maternal immune system under the influence of progesterone. Case control study was conducted to determine Treg cells, IL-10, TGF-β, and membrane progesterone receptorα (mPRα) in the maternal-fetal interface (placenta), including eight pregnant women with threatened PTL (study group) and 16 normal-delivery women (control group). Comparing study group versus control, mean gestational age of delivery differed significantly (p = 0...
November 9, 2016: Fetal and Pediatric Pathology
https://www.readbyqxmd.com/read/27824768/relationship-between-excessive-gestational-weight-gain-and-neonatal-adiposity-in-women-with-mild-gestational-diabetes-mellitus
#20
Sean C Blackwell, Mark B Landon, Lisa Mele, Uma M Reddy, Brian M Casey, Ronald J Wapner, Michael W Varner, Dwight J Rouse, John M Thorp, Anthony Sciscione, Patrick Catalano, George Saade, Steve N Caritis, Yoram Sorokin, William A Grobman
OBJECTIVE: To evaluate the relationships among excessive gestational weight gain, neonatal adiposity, and adverse obstetric outcomes in women with mild gestational diabetes mellitus. METHODS: This is a secondary analysis of a multicenter randomized clinical trial of women with mild gestational diabetes mellitus. Based on self-reported prepregnancy body weight, gestational weight gain was categorized as excessive if it was greater than 2009 Institute of Medicine guidelines...
December 2016: Obstetrics and Gynecology
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