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maternal tolerance

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https://www.readbyqxmd.com/read/27911105/associations-between-maternal-bmi-as-well-as-glucose-tolerance-and-adverse-pregnancy-outcomes-in-women-with-polycystic-ovary-syndrome
#1
Ying-Ying Li, Su-Qi Ye, Zhuo-Hui Zhong, Qiong Xu, Wei-Bi Mai, Cai-Xin Yin, Zhi-Qin Zhu, Xiao-Qian He, Qing Xiao
This retrospective, cohort study examined the association between maternal pre-pregnancy body mass index (BMI), independent of glucose tolerance and adverse pregnancy outcomes in women with polycystic ovary syndrome (PCOS), for which there are few previous studies. Medical records from 2012 to 2015 at Guangzhou Women and Children's Medical Center, China were reviewed for women previously diagnosed with PCOS with normal 2-h 75-g oral glucose tolerance test (OGTT) results (n = 1249). The separate and joint effects of maternal BMI and glucose levels on pregnancy outcomes were assessed...
December 2, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27906186/preimplantation-factor-is-an-anti-apoptotic-effector-in-human-trophoblasts-involving-p53-signaling-pathway
#2
Hadia Moindjie, Esther Dos Santos, Rita-Josiane Gouesse, Nelly Swierkowski-Blanchard, Valérie Serazin, Eytan R Barnea, François Vialard, Marie-Noëlle Dieudonné
From the earliest stages of gestation, embryonic-maternal interaction has a key role in a successful pregnancy. Various factors present during gestation may significantly influence this type of juxta/paracrine interaction. PreImplantation Factor (PIF) is a recently identified factor with activity at the fetomaternal interface. PIF is secreted by viable embryos and directly controls placental development by increasing the invasive capacity of human extravillous trophoblasts (EVTs). To further specify PIF's role in the human placenta, we analyzed the genome-wide expression profile of the EVT in the presence of a synthetic PIF analog (sPIF)...
December 1, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27905000/decidual-natural-killer-cells-and-the-immune-microenvironment-at-the-maternal-fetal-interface
#3
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/27904974/heat-stress-affects-carbohydrate-metabolism-during-cold-induced-sweetening-of-potato-solanum-tuberosum-l
#4
Derek J Herman, Lisa O Knowles, N Richard Knowles
Tolerance to heat stress for retention of low-temperature sweetening-resistant phenotype in potato is conferred by insensitivity of acid invertase activity to cold induction. Heat stress exacerbated cold sweetening (buildup of reducing sugars) of the LTS (low-temperature sweetening)-susceptible potato (Solanum tuberosum L.) cultivars, Ranger Russet and Russet Burbank, and completely abolished the resistance to cold sweetening in the LTS-resistant cultivars/clones, Sage Russet, GemStar Russet, POR06V12-3 and A02138-2...
November 30, 2016: Planta
https://www.readbyqxmd.com/read/27901638/atlantic-dip-insulin-therapy-for-women-with-iadpsg-diagnosed-gestational-diabetes-mellitus-does-it-work
#5
D Bogdanet, A M Egan, C Reddin, O Kgosidialwa, B Kirwan, L Carmody, F P Dunne
INTRODUCTION: Approximately 40% of women with gestational diabetes mellitus (GDM) diagnosed using IADPSG criteria require insulin therapy. OBJECTIVE: To assess if the outcomes for women with GDM treated with insulin are comparable to women with normal glucose tolerance (NGT). MATERIALS AND METHODS: This retrospective cohort study included 752 women with insulin-treated GDM and 2496 women with NGT during pregnancy. Maternal and foetal outcomes were examined...
November 30, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27898959/heritabilities-and-genetic-correlations-of-pulmonary-arterial-pressure-and-performance-traits-in-angus-cattle-at-high-altitude
#6
N F Crawford, M G Thomas, T N Holt, S E Speidel, R M Enns
Pulmonary arterial pressure (PAP) is an indicator trait for pulmonary hypertension and for the risk of developing high-altitude disease (HAD) in cattle. Pulmonary arterial pressures provide a tool for selection of breeding cattle for tolerance to high altitude in mountainous regions of the United States. The objective of this study was to evaluate relationships between growth performance traits and yearling PAP (42.4 ± 9.9 mmHg; = 5,776; elevation 2,150 m) using data from 1993 to 2014 in the John E. Rouse Colorado State University Beef Improvement Center (CSU-BIC) Angus herd...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898850/genetic-evaluations-for-growth-heat-tolerance-in-angus-cattle
#7
H L Bradford, B O Fragomeni, J K Bertrand, D A L Lourenco, I Misztal
The objectives were to assess the impact of heat stress and to develop a model for genetic evaluation of growth heat tolerance in Angus cattle. The American Angus Association provided weaning weight (WW) and yearling weight (YW) data, and records from the Upper South region were used because of the hot climatic conditions. Heat stress was characterized by a weaning (yearling) heat load function defined as the mean temperature-humidity index (THI) units greater than 75 (70) for 30 (150) d prior to the weigh date...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898464/donor-derived-exosomes-the-trick-behind-the-semidirect-pathway-of-allorecognition
#8
Adrian E Morelli, William Bracamonte-Baran, William J Burlingham
PURPOSE OF REVIEW: The passenger leukocyte hypothesis predicts that after transplantation, donor antigen-presenting cells (APCs) from the graft present donor MHC molecules to directly alloreactive T cells in lymphoid organs. However, in certain transplantation models, recent evidence contradicts this long-standing concept. New findings demonstrate that host, instead of donor, APCs play a prominent role in allosensitization against donor MHC molecules via the semidirect pathway. A similar mechanism operates in development of T-cell split tolerance to noninherited maternal antigens...
November 24, 2016: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/27881521/is-famine-exposure-during-developmental-life-in-rural-bangladesh-associated-with-a-metabolic-and-epigenetic-signature-in-young-adulthood-a-historical-cohort-study
#9
S Finer, M S Iqbal, R Lowe, B W Ogunkolade, S Pervin, C Mathews, M Smart, D S Alam, G A Hitman
OBJECTIVES: Famine exposure in utero can 'programme' an individual towards type 2 diabetes and obesity in later life. We sought to identify, (1) whether Bangladeshis exposed to famine during developmental life are programmed towards diabetes and obesity, (2) whether this programming was specific to gestational or postnatal exposure windows and (3) whether epigenetic differences were associated with famine exposure. DESIGN: A historical cohort study was performed as part of a wider cross-sectional survey...
November 23, 2016: BMJ Open
https://www.readbyqxmd.com/read/27871471/endocan-expression-is-increased-in-the-placenta-from-obese-women-with-gestational-diabetes-mellitus
#10
Padma Murthi, Ramona Sarkis, Ratana Lim, Caitlyn Nguyen-Ngo, Anita Pratt, Stella Liong, Martha Lappas
INTRODUCTION: Endocan, a member of the proteoglycan family, is involved in a wide range of diseases including obesity and diabetes. The aim of this study was to determine the effect of (i) maternal obesity and gestational diabetes mellitus (GDM) on placental endocan expression; and (ii) endocan knockdown on markers of inflammation. METHODS: Endocan mRNA and protein expression was determined in human placenta from (i) lean and obese and normal glucose tolerant (NGT) pregnant women (n = 10 patients per group); and (ii) women with GDM and BMI-matched NGT women (n = 40 patients per group)...
December 2016: Placenta
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
#11
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/27863548/impact-of-in-vitro-treatments-of-physiological-levels-of-estradiol-and-progesterone-observed-in-pregnancy-on-bovine-monocyte-derived-dendritic-cell-differentiation-and-maturation
#12
Brianna Pomeroy, Suzanne Klaessig, Ynte Schukken
The specific factors which regulate differentiation and maturation of dendritic cells in bovine pregnancy remain unclear. We evaluated the influence of physiologically relevant in vitro treatments of progesterone (PG) and estradiol (E2) observed in late pregnancy on the differentiation and maturation of CD14+ monocyte-derived dendritic cell (moDC) from non-pregnant, lactating dairy cows (n=7). We found that moDC differentiated in the presence of both E2 and PG had impaired E. coli-induced phenotypic maturation, specifically a significant reduction in CD80 and MHC II expression...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863107/heterogeneity-of-glycometabolism-in-patients-with-gestational-diabetes-mellitus
#13
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/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/27855777/successful-transmission-and-transcriptional-deployment-of-a-human-chromosome-via-mouse-male-meiosis
#15
Christina Ernst, Jeremy Pike, Sarah J Aitken, Hannah K Long, Nils Eling, Lovorka Stojic, Frances Connor, Tim F Rayner, Margus Lukk, Robert J Klose, Claudia Kutter, Duncan T Odom
Most human aneuploidies originate maternally, due in part to the presence of highly stringent checkpoints during male meiosis. Indeed, male sterility is common among aneuploid mice used to study chromosomal abnormalities, and male germline transmission of exogenous DNA has been rarely reported. Here we show that despite aberrant testis architecture, males of the aneuploid Tc1 mouse strain produce viable sperm and transmit human chromosome 21 to create aneuploid offspring. In these offspring, we mapped transcription, transcriptional initiation, enhancer activity, non-methylated DNA and transcription factor binding in adult tissues...
November 18, 2016: ELife
https://www.readbyqxmd.com/read/27855754/sleep-quality-and-nocturnal-sleep-duration-in-pregnancy-and-risk-of-gestational-diabetes-mellitus
#16
Shirong Cai, Sara Tan, Peter D Gluckman, Keith M Godfrey, Seang-Mei Saw, Oon Hoe Teoh, Yap-Seng Chong, Michael J Meaney, Michael S Kramer, Joshua J Gooley
OBJECTIVE: To examine the influence of maternal sleep quality and nocturnal sleep duration on risk of gestational diabetes mellitus (GDM) in a multi-ethnic Asian population. METHODS: 686 women (376 Chinese, 186 Malay and 124 Indian) with a singleton pregnancy attended a clinic visit at 26-28 weeks of gestation as part of the Growing Up in Singapore Towards healthy Outcomes (GUSTO) mother-offspring cohort study. Self-reported sleep quality and sleep duration were assessed using the Pittsburgh Sleep Quality Index (PSQI)...
November 14, 2016: Sleep
https://www.readbyqxmd.com/read/27836638/maternal-bisphenol-a-exposure-alters-rat-offspring-hepatic-and-skeletal-muscle-insulin-signaling-protein-abundance
#17
Kristina D Galyon, Farnoosh Farshidi, Guang Han, Michael G Ross, Mina Desai, Juanita K Jellyman
BACKGROUND: The obesogenic and diabetogenic effects of the environmental toxin bisphenol A during critical windows of development are well recognized. Liver and skeletal muscle play a central role in the control of glucose production, utilization, and storage. OBJECTIVES: We hypothesized that maternal bisphenol A exposure disrupts insulin signaling in rat offspring liver and skeletal muscle. We determined the protein expression of hepatic and skeletal muscle insulin signaling molecules including insulin receptor beta, its downstream target insulin receptor substrate 1 and glucose transporters (glucose transporter 2, glucose transporter 4), and hepatic glucose-regulating enzymes phosphoenolpyruvate carboxykinase and glucokinase...
November 9, 2016: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27834288/maternal-t-regulatory-cell-depletion-impairs-embryo-implantation-which-can-be-corrected-with-adoptive-t-regulatory-cell-transfer
#18
Ryan J Heitmann, R Patrick Weitzel, Yanling Feng, James H Segars, John F Tisdale, Erin Foran Wolff
Maternal immune tolerance of fetal engraftment is critical for the establishment and maintenance of pregnancy, but the exact mechanisms permitting this semi-allograft in the maternal host are not completely understood. Further, failure of the embryo to implant in the uterus accounts for at least 30% of the best prognosis in vitro fertilization cycles when a perfect embryo is transferred to a normal uterus. We hypothesized that T regulatory cells (Tregs), defined by CD4(+)CD25hi surface expression and the FoxP3+ transcription factor, play an important role in the initiation of the earliest stages of pregnancy, specifically implantation of the embryo...
November 9, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27821470/betamethasone-exposed-preterm-birth-does-not-impair-insulin-action-in-adult-sheep
#19
R De Matteo, D J Hodgson, T Bianco-Miotto, V Nguyen, J A Owens, R Harding, B J Allison, G Polglase, M J Black, K L Gatford
Preterm birth is associated with increased risk of type 2 diabetes (T2D) in adulthood; however, the underlying mechanisms are poorly understood. We therefore investigated the effect of preterm birth at ~0.9 of term after antenatal maternal betamethasone on insulin sensitivity, secretion and key determinants in adulthood, in a clinically relevant animal model. Glucose tolerance and insulin secretion (intravenous glucose tolerance test) and whole-body insulin sensitivity (hyperinsulinaemic euglycaemic clamp) were measured and tissue collected in young adult sheep (14 months old) after epostane-induced preterm (9M, 7F) or term delivery (11M, 6F)...
February 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/27819485/pilot-randomized-controlled-trial-of-omega-3-and-individual-family-psychoeducational-psychotherapy-for-children-and-adolescents-with-depression
#20
Mary A Fristad, Anthony T Vesco, Andrea S Young, K Zachary Healy, Elias S Nader, William Gardner, Adina M Seidenfeld, Hannah L Wolfson, L Eugene Arnold
The goal of this study is to evaluate feasibility and estimate effect sizes of omega-3 fatty acids (Ω3), individual-family psychoeducational psychotherapy (PEP), their combination, and moderating effects of maternal depression and psychosocial stressors in youth with depression. In a pilot 2 × 2 randomized controlled trial, 72 youth (ages 7-14; 57% Caucasian, 57% male) with major depression, dysthymia, or depression not otherwise specified were randomized to 12 weeks of Ω3, PEP+placebo, Ω3+PEP, or placebo...
November 7, 2016: Journal of Clinical Child and Adolescent Psychology
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