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https://www.readbyqxmd.com/read/28820906/exposure-to-fine-particulate-matter-in-the-air-alters-placental-structure-and-the-renin-angiotensin-system
#1
Sônia de Fátima Soto, Juliana Oliveira de Melo, Guilherme D'Aprile Marchesi, Karen Lucasechi Lopes, Mariana Matera Veras, Ivone Braga de Oliveira, Regiane Machado de Souza, Isac de Castro, Luzia Naôko Shinohara Furukawa, Paulo Hilário Nascimento Saldiva, Joel C Heimann
METHODS: Female Wistar rats were exposed to filtered air (F) or to concentrated fine particulate matter (P) for 15 days. After mating, the rats were divided into four groups and again exposed to F or P (FF, FP, PF, PP) beginning on day 6 of pregnancy. At embryonic day 19, the placenta was collected. The placental structure, the protein and gene expression of TGFβ1, VEGF-A, and its receptor Flk-1 and RAS were evaluated by indirect ELISA and quantitative real-time PCR. RESULTS: Exposure to P decreased the placental mass, size, and surface area as well as the TGFβ1, VEGF-A and Flk-1 content...
2017: PloS One
https://www.readbyqxmd.com/read/28819529/-epidemiological-profile-of-maternal-complications-related-to-cesarean-section-at-the-al-farabi-hospital-in-oujda
#2
Saad Benkirane, Hanane Saadi, Ahmed Mimouni
In Morocco cesarean section rate has increased from 2% in 1992 to 16% in 2011. This was associated with increased per- and postoperative mortality and morbidity, which was 19% in our case series. This study is the first of its kind to be conducted in the eastern region of Morocco and aims to analyze the comprehensive epidemiologic profile of maternal complications related to cesarean section on the basis of 2417 cases observed in the Maternity Department at the El Farabi Hospital, Oujda. We conducted an observational, descriptive, retrospective study of a series of 2416 patients undergoing cesarean section in the Maternity Department at the El Farabi Hospital, Oujda, over the period 1 January 2011-31 December 2013...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28816360/c-c-motif-chemokine-ligand-2-regulates-lps-induced-inflammation-and-er-stress-to-enhance-proliferation-of-bovine-endometrial-epithelial-cells
#3
Whasun Lim, Hyocheol Bae, Fuller W Bazer, Sung-Man Kim, Gwonhwa Song
Chemokines play an important role in regulating the complex immune system at the maternal-fetal interface during pregnancy. Among various chemokines, C-C motif chemokine ligand 2 (CCL2) plays a role in the recruitment of immune regulatory cells to implantation sites within the endometrium. In cattle, CCL2 is abundantly expressed in the uterine endometrium. However, its intracellular signaling has not been identified. In this study, we examined the effects of CCL2 on bovine endometrial (BEND) cell proliferation...
August 17, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28807280/immunization-with-inactivated-antigens-of-neospora-caninum-induces-toll-like-receptors-3-7-8-and-9-in-maternal-fetal-interface-of-infected-pregnant-heifers
#4
M S Marin, Y P Hecker, S Quintana, S E Pérez, M R Leunda, G J Cantón, E R Cobo, D P Moore, A C Odeón
Neospora caninum is an obligate parasite and a major cause of abortion in cattle. Pregnancy failures appear to be associated with weak innate defences on the maternal-fetal interface during infection with N. caninum. Herein, we studied the gene expression of Toll-like receptors (TLRs) in pregnant heifers immunized with different vaccine formulations against N. caninum before mating and then challenged the heifers with live N. caninum on day 70 of gestation. TLR7 and TLR8 expression was upregulated in the placental caruncle of infected-pregnant heifers previously exposed to live N...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28805116/bisphenol-a-and-adverse-pregnancy-outcomes-a-systematic-review-of-the-literature
#5
Vasilios Pergialiotis, Paraskevi Kotrogianni, Evangelos Christopoulos-Timogiannakis, Diamanto Koutaki, Georgios Daskalakis, Nikolaos Papantoniou
PURPOSE: Bisphenol A is a chemical compound related to adverse maternal and neonatal outcomes. The purpose of the present systematic review is to summarize current knowledge in the field. MATERIALS AND METHODS: We systematically searched the Medline (1966-2017), Scopus (2004-2017), Clinicaltrials.gov (2008-2017), Cochrane Central Register of Controlled Trials CENTRAL (1999-2017) databases. RESULTS: Thirty-five studies were included in the present systematic review...
August 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28802033/formidable-defenses-in-utero
#6
Catarina Sacristán
A developing human embryo encounters a multitude of threatening scenarios in the womb. How does the fetus defend itself throughout gestation? A new study by McGovern et al. provides remarkable insight into maternal-fetal immunotolerance.
August 10, 2017: Cell
https://www.readbyqxmd.com/read/28796674/neonatal-morbidity-of-small-and-large-for-gestational-age-neonates-born-at-term-in-uncomplicated-pregnancies
#7
Suneet P Chauhan, Madeline Murguia Rice, William A Grobman, Jennifer Bailit, Uma M Reddy, Ronald J Wapner, Michael W Varner, John M Thorp, Kenneth J Leveno, Steve N Caritis, Mona Prasad, Alan T N Tita, George Saade, Yoram Sorokin, Dwight J Rouse, Jorge E Tolosa
OBJECTIVE: To compare morbidity among small-for-gestational-age (SGA; birth weight less than the 10th percentile for gestational age), appropriate-for-gestational-age (AGA; birth weight 10th to 90th percentile; reference group), and large-for-gestational-age (LGA; birth weight greater than the 90th percentile) neonates in apparently uncomplicated pregnancies at term (37 weeks of gestation or greater). METHODS: This secondary analysis, derived from an observational obstetric cohort of 115,502 deliveries, included women with apparently uncomplicated pregnancies of nonanomalous singletons who had confirmatory ultrasound dating no later than the second trimester and who delivered between 37 0/7 and 42 6/7 weeks of gestation...
August 4, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28794456/activated-nk-cells-cause-placental-dysfunction-and-miscarriages-in-fetal-alloimmune-thrombocytopenia
#8
Issaka Yougbaré, Wei-She Tai, Darko Zdravic, Brigitta Elaine Oswald, Sean Lang, Guangheng Zhu, Howard Leong-Poi, Dawei Qu, Lisa Yu, Caroline Dunk, Jianhong Zhang, John G Sled, Stephen J Lye, Jelena Brkić, Chun Peng, Petter Höglund, B Anne Croy, S Lee Adamson, Xiao-Yan Wen, Duncan J Stewart, John Freedman, Heyu Ni
Miscarriage and intrauterine growth restriction (IUGR) are devastating complications in fetal/neonatal alloimmune thrombocytopenia (FNAIT). We previously reported the mechanisms for bleeding diatheses, but it is unknown whether placental, decidual immune cells or other abnormalities at the maternal-fetal interface contribute to FNAIT. Here we show that maternal immune responses to fetal platelet antigens cause miscarriage and IUGR that are associated with vascular and immune pathologies in murine FNAIT models...
August 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28793129/clinical-characteristics-of-women-with-gestational-diabetes-comparison-of-two-cohorts-enrolled-20-years-apart-in-southern-brazil
#9
Angela Jacob Reichelt, Letícia Schwerz Weinert, Livia Silveira Mastella, Vanessa Gnielka, Maria Amélia Campos, Vânia Naomi Hirakata, Maria Lúcia Rocha Oppermann, Sandra Pinho Silveiro, Maria Inês Schmidt
CONTEXT AND OBJECTIVE: The prevalence and characteristics of gestational diabetes mellitus (GDM) have changed over time, reflecting the nutritional transition and changes in diagnostic criteria. We aimed to evaluate characteristics of women with GDM over a 20-year interval. DESIGN AND SETTING: Comparison of two pregnancy cohorts enrolled in different periods, in university hospitals in Porto Alegre, Brazil: 1991 to 1993 (n = 216); and 2009 to 2013 (n = 375). METHODS: We applied two diagnostic criteria to the cohorts: International Association of Diabetes and Pregnancy Study Groups (IADPSG)/World Health Organization (WHO); and National Institute for Health and Care Excellence (NICE)...
July 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28782502/society-for-maternal-fetal-medicine-smfm-consult-series-43-hepatitis-c-in-pregnancy-screening-treatment-and-management
#10
Brenna L Hughes, Charlotte M Page, Jeffrey A Kuller
In the United States, 1-2.5% of pregnant women are infected with hepatitis C virus (HCV), which carries an approximately 5% risk of transmission from mother to infant. HCV can be transmitted to the infant in utero or during the peripartum period, and infection during pregnancy is associated with increased risk of adverse fetal outcomes, including fetal growth restriction and low birth weight. The purpose of this document is to discuss the current evidence regarding HCV in pregnancy and to provide recommendations on screening, treatment, and management of this disease during pregnancy...
August 3, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28782117/risk-factors-for-blood-transfusion-in-patients-undergoing-high-order-cesarean-delivery
#11
Jessica Spiegelman, Mirella Mourad, Stephanie Melka, Simi Gupta, Jennifer Lam-Rachlin, Andrei Rebarber, Daniel H Saltzman, Nathan S Fox
BACKGROUND: The objective was to identify risk factors associated with blood transfusion in patients undergoing high-order Cesarean delivery (CD). STUDY DESIGN AND METHODS: This was a retrospective cohort study of patients undergoing third or more CD by a single maternal-fetal medicine practice between 2005 and 2016. We compared risk factors between women who did and did not receive a red blood cell transfusion during the operation or before discharge. Repeat analysis was performed after excluding women with placenta previa...
August 7, 2017: Transfusion
https://www.readbyqxmd.com/read/28780660/update-on-valvular-heart-disease-in-pregnancy
#12
REVIEW
Lucy M Safi, Sarah V Tsiaras
Valvular heart disease in women of childbearing age poses an increased risk of adverse maternal and fetal outcomes, and management in pregnancy can be challenging. Ideally, patients with suspected valvular disease should have preconception counseling by a multidisciplinary team including cardiologists with expertise in pregnancy and a maternal-fetal medicine specialist. Preconception planning should include a cardiac assessment of maternal risk, determination of frequency of surveillance, and a cardiovascular management plan during delivery...
September 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28780659/preconception-counseling-for-women-with-cardiac-disease
#13
REVIEW
Mark A Clapp, Sarah N Bernstein
All providers who care for reproductive-aged women with cardiac disease should assess these patients' desires and plans for pregnancy at every encounter. For those considering pregnancy, preconception counseling, often performed by a maternal-fetal medicine specialist, can help patients understand the potential implications of pregnancy on their health and estimate the risks of an adverse cardiac event prior to conceiving. There are cardiac conditions, such as pulmonary hypertension and aortic stenosis, in which pregnancy may be contraindicated given the high morbidity and mortality; there are tools available to help quantify a patient's risk...
September 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28775298/sexual-and-vertical-transmission-of-zika-virus-in-anti-interferon-receptor-treated-rag1-deficient-mice
#14
Clayton W Winkler, Tyson A Woods, Rebecca Rosenke, Dana P Scott, Sonja M Best, Karin E Peterson
Although Zika virus (ZIKV) is primarily transmitted to humans by the Aedes aegypti mosquito, human-to-human transmission has also been observed from males-to-females as well as mother-to-offspring. In the current study, we studied both sexual transmission (STx) and vertical transmission (VTx) of ZIKV using anti-IFNAR1-treatment of Rag1 (-/-) (AIR) mice. These mice have suppressed type I IFN responses and lack adaptive immune responses, leading to a prolonged infection prior to clinical disease. STx of ZIKV from infected AIR males to naive Ifnar1 (-/-) females was observed with greater than 50% incidence, with infection observed in the vaginal tract at early time points...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28760566/3-d-virtual-reconstruction-of-a-large-amniocele-with-protrusion-of-legs-and-umbilical-cord-following-asymptomatic-uterine-rupture
#15
Renato Augusto Moreira de Sá, Valeria Pereira de Moraes, Marianne Cecília da Costa Soares, Heron Werner, Gerson Ribeiro, Jorge Lopes, Edward Araujo Júnior
BACKGROUND: Complete uterine rupture is a rare and severe intrapartum complication with high rates of maternal and fetal mortality. Asymptomatic uterine rupture is a very rare condition with one unique previous case described in the literature. Three-dimensional virtual models allow an immersive virtual reality of maternal-fetal structures with better understanding by the parents and the medical team. CASE: We demonstrate a case of asymptomatic rupture uterine with a large amniocele and protruded legs and umbilical cord at 28 weeks of gestation by using a 3-D virtual model from ultrasound scan data...
July 28, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28758917/heat-exposure-and-maternal-health-in-the-face-of-climate-change
#16
REVIEW
Leeann Kuehn, Sabrina McCormick
Climate change will increasingly affect the health of vulnerable populations, including maternal and fetal health. This systematic review aims to identify recent literature that investigates increasing heat and extreme temperatures on pregnancy outcomes globally. We identify common research findings in order to create a comprehensive understanding of how immediate effects will be sustained in the next generation. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guide, we systematically reviewed articles from PubMed and Cochrane Reviews...
July 29, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28756371/il-27-induces-a-pro-inflammatory-response-in-human-fetal-membranes-mediating-preterm-birth
#17
Nanlin Yin, Hanbing Wang, Hua Zhang, Huisheng Ge, Bing Tan, Yu Yuan, Xiaofang Luo, David M Olson, Philip N Baker, Hongbo Qi
Inflammation at the maternal-fetal interface has been shown to be involved in the pathogenesis of preterm birth. Interleukin 27 (IL-27), a heterodimeric cytokine, is known to mediate an inflammatory response in some pregnancy complications. In this study, we aimed to determine whether IL-27 could induce an inflammatory reaction at the maternal-fetal interface that would mediate the onset of preterm birth. We found elevated expression of IL-27 in human peripheral serum and elevated expression of its specific receptor (wsx-1) on fetal membranes in cases of preterm birth...
July 26, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28754617/infection-by-schistosoma-mansoni-during-pregnancy-effects-on-offspring-immunity
#18
REVIEW
Vanessa Ribeiro Figliuolo da Paz, Danielly Sequeira, Alexandre Pyrrho
About 25 million Brazilians live in areas at risk of contracting the disease caused by the trematoda Schistosoma mansoni, the schistosomiasis mansoni. Although the adult parasites inhabit the blood vessels, probably the main element responsible for the pathology of the disease are the eggs, whose deposition in the liver results in formation of granulomas and hypersensitivity mediated by CD4 T cells. In the course of infection, the profile of T helper 1 (Th1) and Th2 cytokines released by immune cells is correlated with the extent of inflammation in the granuloma and with the disease severity...
July 25, 2017: Life Sciences
https://www.readbyqxmd.com/read/28750739/the-yy1-hotair-mmp2-signaling-axis-controls-trophoblast-invasion-at-the-maternal-fetal-interface
#19
Yan Zhang, Feng Jin, Xiao-Cui Li, Fu-Jin Shen, Xiao-Ling Ma, Fan Wu, Si-Ming Zhang, Wei-Hong Zeng, Xiao-Rui Liu, Jian-Xia Fan, Yi Lin, Fu-Ju Tian
We aimed to determine the effect of YY1 expression on the expression profile of long noncoding RNAs (lncRNAs) in trophoblasts, and we studied the involvement of certain lncRNAs and YY1 in the pathogenesis of recurrent miscarriage (RM). RT2 lncRNA PCR arrays revealed that YY1 overexpression in trophoblasts significantly promoted the expression of the HOX transcript antisense RNA HOTAIR and demonstrated that HOTAIR expression was significantly lower in the RM trophoblasts than in control trophoblasts. Ectopic HOTAIR overexpression and knockdown experiments revealed that it was a novel target of YY1...
July 5, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28749484/communication-related-allegations-against-physicians-caring-for-premature-infants
#20
J Nguyen, H Muniraman, M Cascione, R Ramanathan
OBJECTIVE: Maternal-fetal medicine physicians (MFMp) and neonatal-perinatal medicine physicians (NPMp) caring for premature infants and their families are exposed to significant risk for malpractice actions. Effective communication practices have been implicated to decrease litigious intentions but the extent of miscommunication as a cause of legal action is essentially unknown in this population. Analysis of communication-related allegations (CRAs) may help toward improving patient care and physician-patient relationships as well as decrease litigation risks...
July 27, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
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