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Placenta fetal programming

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https://www.readbyqxmd.com/read/28213434/malaria-during-pregnancy
#1
Michal Fried, Patrick E Duffy
One hundred and twenty-five million women in malaria-endemic areas become pregnant each year (see Dellicour et al. PLoS Med7: e1000221 [2010]) and require protection from infection to avoid disease and death for themselves and their offspring. Chloroquine prophylaxis was once a safe approach to prevention but has been abandoned because of drug-resistant parasites, and intermittent presumptive treatment with sulfadoxine-pyrimethamine, which is currently used to protect pregnant women throughout Africa, is rapidly losing its benefits for the same reason...
February 17, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28194805/fetal-adaptations-in-insulin-secretion-result-from-high-catecholamines-during-placental-insufficiency
#2
Sean W Limesand, Paul J Rozance
Placental insufficiency and intrauterine growth restriction (IUGR) of the fetus affects approximately 8% of all pregnancies and is associated with short- and long-term disturbances in metabolism. In pregnant sheep, experimental models with a small, defective placenta that restricts delivery of nutrients and oxygen to the fetus result in IUGR. Low blood oxygen concentrations increase fetal plasma catecholamine concentrations, which lower fetal insulin concentrations. All of these observations in sheep models with placental insufficiency are consistent with cases of human IUGR...
February 14, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28180200/acoustic-radiation-force-impulse-elastosonography-of-placenta-in-maternal-red-blood-cell-alloimmunization-a-preliminary-and-descriptive-study
#3
Orkun Cetin, Erbil Karaman, Harun Arslan, Ibrahim Akbudak, Recep Yıldızhan, Ali Kolusarı
AIMS: Maternal red blood cell alloimmunization is an important cause of fetal morbidity and mortality in the perinatal period, despite well-organized prophylaxis programs. The objective of the study was to evaluate placental elasticity by using Acoustic Radiation Force Impulse (ARFI) in Rhesus (Rh) alloimmunized pregnant women with hydropic and nonhydropic fetuses and to compare those with healthy pregnant women. MATERIAL AND METHODS: This case-control and descriptive study comprised twenty-eight healthy pregnant women, 14 Rh alloimmunized pregnant women with nonhydropic fetuses, and 16 Rh alloimmunized pregnant women with hydropic fetuses in the third trimester of pregnancy...
January 31, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28168960/sex-specific-neurodevelopmental-programming-by-placental-insulin-receptors-on-stress-reactivity-and-sensorimotor-gating
#4
Stefanie L Bronson, Jennifer C Chan, Tracy L Bale
BACKGROUND: Diabetes, obesity, and overweight are prevalent pregnancy complications that predispose offspring to neurodevelopmental disorders, including autism, attention-deficit/hyperactivity disorder, and schizophrenia. Although male individuals are three to four times more likely than female individuals to develop these disorders, the mechanisms driving the sex specificity of disease vulnerability remain unclear. Because defective placental insulin receptor (InsR) signaling is a hallmark of pregnancy metabolic dysfunction, we hypothesized that it may be an important contributor and novel mechanistic link to sex-specific neurodevelopmental changes underlying disease risk...
December 30, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/28103963/sex-differences-in-early-life-programming-of-the-hypothalamic-pituitary-adrenal-axis-in-humans-suggest-increased-vulnerability-in-females-a-systematic-review
#5
T Carpenter, S M Grecian, R M Reynolds
Fetal glucocorticoid overexposure is a key mechanism linking early development with later-life disease. In humans, low birth weight associates with increased fasting cortisol, hypothalamic-pituitary-adrenal (HPA) axis reactivity, and with cardiovascular risk and cognitive decline. As there are sex differences in these adult diseases, we hypothesized that there may be sex differences in programming of the HPA axis in response to prenatal stressors. We conducted a systematic review following Meta-Analysis of Observational Studies in Epidemiology and Preferred Reporting Items for Systematic Reviews and Meta-Analysis...
January 20, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28031337/immune-modifications-in-fetal-membranes-overlying-the-cervix-precede-parturition-in-humans
#6
Louis Marcellin, Thomas Schmitz, Meriem Messaoudene, Driss Chader, Christophe Parizot, Sébastien Jacques, Jérémy Delaire, Jean Gogusev, Alain Schmitt, Corinne Lesaffre, Michelle Breuiller-Fouché, Anne Caignard, Daniel Vaiman, François Goffinet, Dominique Cabrol, Guy Gorochov, Céline Méhats
In humans, parturition is currently viewed as an intrauterine outbreak of inflammation, accompanied by a massive release of proinflammatory cytokines at the maternal-fetal interface that comprises the maternal decidua, placenta, and fetal membranes. At term, fetal membranes overlying the cervix, the future site of rupture, show altered morphology and are termed the zone of altered morphology (ZAM). These alterations occur in normal fetal membranes during late pregnancy, in preparation for labor. In this study, transcriptome, flow cytometry, electron microscopy, and immunohistochemistry analyses collectively highlight a local shift in gene expression and lymphocyte activation in the ZAM...
December 28, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28012455/maternal-obesity-alters-brain-derived-neurotrophic-factor-bdnf-signaling-in-the-placenta-in-a-sexually-dimorphic-manner
#7
Calais S Prince, Alina Maloyan, Leslie Myatt
INTRODUCTION: Obesity is a major clinical problem in obstetrics being associated with adverse pregnancy outcomes and fetal programming. Brain derived neurotrophic factor (BDNF), a validated miR-210 target, is necessary for placental development, fetal growth, glucose metabolism, and energy homeostasis. Plasma BDNF levels are reduced in obese individuals; however, placental BDNF has yet to be studied in the context of maternal obesity. In this study, we investigated the effect of maternal obesity and sexual dimorphism on placental BDNF signaling...
January 2017: Placenta
https://www.readbyqxmd.com/read/27969554/obstetric-and-anaesthesia-checklists-for-the-management-of-morbidly-adherent-placenta
#8
Melissa G Walker, Lindsay Pollard, Chiraag Talati, Jose C A Carvalho, Lisa M Allen, John Kachura, Ally Murji, John C Kingdom, Rory Windrim
OBJECTIVE: To develop an integrated checklist for the management of patients with suspected morbidly adherent placenta (MAP). METHODS: A checklist process was developed incrementally by clinicians in the disciplines of maternal-fetal medicine, gynaecology, medical imaging, and anaesthesia for management of women with suspected MAP. RESULTS: Over a five-year period of debriefing after individual cases, a comprehensive checklist system was developed...
November 2016: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/27859593/placental-specific-overexpression-of-sflt-1-alters-trophoblast-differentiation-and-nutrient-transporter-expression-in-an-iugr-mouse-model
#9
E Kühnel, V Kleff, V Stojanovska, S Kaiser, R Waldschütz, F Herse, T Plösch, E Winterhager, A Gellhaus
Since it is known that placental overexpression of the human anti-angiogenic molecule sFlt-1, the main candidate in the progression of preeclampsia, lead to intrauterine growth restriction (IUGR) in mice by lentiviral transduction of mouse blastocysts, we hypothesize that sFlt-1 influence placental morphology and physiology resulting in fetal IUGR. We therefore examined the effect of sFlt-1 on placental morphology and physiology at embryonic day 18.5 with histologic and morphometric analyses, transcript analyses, immunoblotting, and methylation studies...
November 9, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27849611/notch1-controls-development-of-the-extravillous-trophoblast-lineage-in-the-human-placenta
#10
Sandra Haider, Gudrun Meinhardt, Leila Saleh, Christian Fiala, Jürgen Pollheimer, Martin Knöfler
Development of the human placenta and its different epithelial trophoblasts is crucial for a successful pregnancy. Besides fusing into a multinuclear syncytium, the exchange surface between mother and fetus, progenitors develop into extravillous trophoblasts invading the maternal uterus and its spiral arteries. Migration into these vessels promotes remodelling and, as a consequence, adaption of blood flow to the fetal-placental unit. Defects in remodelling and trophoblast differentiation are associated with severe gestational diseases, such as preeclampsia...
November 29, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27817870/biological-features-of-placental-programming
#11
Kent L Thornburg, Kevin Kolahi, Melinda Pierce, Amy Valent, Rachel Drake, Samantha Louey
The placenta is a key organ in programming the fetus for later disease. This review outlines nine of many structural and physiological features of the placenta which are associated with adult onset chronic disease. 1) Placental efficiency relates the placental mass to the fetal mass. Ratios at the extremes are related to cardiovascular disease risk later in life. 2) Placental shape predicts a large number of disease outcomes in adults but the regulators of placental shape are not known. 3) Non-human primate studies suggest that at about mid-gestation, the placenta becomes less plastic and less able to compensate for pathological stresses...
December 2016: Placenta
https://www.readbyqxmd.com/read/27782079/organ-specific-gene-expression-changes-in-the-fetal-liver-and-placenta-in-response-to-maternal-folate-depletion
#12
Jill A McKay, Long Xie, Michiel Adriaens, Chris T Evelo, Dianne Ford, John C Mathers
Growing evidence supports the hypothesis that the in utero environment can have profound implications for fetal development and later life offspring health. Current theory suggests conditions experienced in utero prepare, or "programme", the fetus for its anticipated post-natal environment. The mechanisms responsible for these programming events are poorly understood but are likely to involve gene expression changes. Folate is essential for normal fetal development and inadequate maternal folate supply during pregnancy has long term adverse effects for offspring...
October 22, 2016: Nutrients
https://www.readbyqxmd.com/read/27780972/developmental-origins-of-nafld-a-womb-with-a-clue
#13
REVIEW
Stephanie R Wesolowski, Karim C El Kasmi, Karen R Jonscher, Jacob E Friedman
Changes in the maternal environment leading to an altered intrauterine milieu can result in subtle insults to the fetus, promoting increased lifetime disease risk and/or disease acceleration in childhood and later in life. Particularly worrisome is that the prevalence of NAFLD is rapidly increasing among children and adults, and is being diagnosed at increasingly younger ages, pointing towards an early-life origin. A wealth of evidence, in humans and non-human primates, suggests that maternal nutrition affects the placenta and fetal tissues, leading to persistent changes in hepatic metabolism, mitochondrial function, the intestinal microbiota, liver macrophage activation and susceptibility to NASH postnatally...
February 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/27749592/prevalence-of-placenta-previa-among-deliveries-in-mainland-china-a-prisma-compliant-systematic-review-and-meta-analysis
#14
REVIEW
Dazhi Fan, Song Wu, Wen Wang, Lihong Xin, Guo Tian, Li Liu, Jinping Feng, Xiaoling Guo, Zhengping Liu
BACKGROUND: Placenta previa is characterized by the abnormal placenta overlying the endocervical os, and it is known as one of the most feared adverse maternal and fetal-neonatal complications in obstetrics. OBJECTIVES: We aimed to obtain overall and regional estimates of placenta previa prevalence among deliveries in Mainland China. METHODS: The research was performed a systematic review, following the Meta-analysis of observational studies in epidemiology (MOOSE) guidelines for systematic reviews of observational studies, and the preferred reporting items for systematic reviews and meta-analysis (PRISMA) statement for reporting systematic reviews and meta-analysis...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27698567/managing-hyperthyroidism-in-pregnancy-current-perspectives
#15
REVIEW
Stine Linding Andersen, Peter Laurberg
Hyperthyroidism in women who are of childbearing age is predominantly of autoimmune origin and caused by Graves' disease. The physiological changes in the maternal immune system during a pregnancy may influence the development of this and other autoimmune diseases. Furthermore, pregnancy-associated physiological changes influence the synthesis and metabolism of thyroid hormones and challenge the interpretation of thyroid function tests in pregnancy. Thyroid hormones are crucial regulators of early development and play an important role in the maintenance of a normal pregnancy and in the development of the fetus, particularly the fetal brain...
2016: International Journal of Women's Health
https://www.readbyqxmd.com/read/27678102/variable-methylation-potential-in-preterm-placenta-implication-for-epigenetic-programming-of-the-offspring
#16
Vinita V Khot, Preeti Chavan-Gautam, Savita Mehendale, Sadhana R Joshi
Children born preterm are reported to be at increased risk of developing noncommunicable diseases in later life. Altered placental DNA methylation patterns are implicated in fetal programming of adult diseases. Our earlier animal studies focus on micronutrients (folic acid, vitamin B12) and long-chain polyunsaturated fatty acids (LCPUFAs) that interact in the 1 carbon cycle, thereby influencing methylation reactions. Our previous studies in women delivering preterm show altered plasma levels of micronutrients and lower plasma LCPUFA levels...
September 27, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27621448/maternal-and-fetal-genomes-interplay-through-phosphoinositol-3-kinase-pi3k-p110%C3%AE-signaling-to-modify-placental-resource-allocation
#17
Amanda N Sferruzzi-Perri, Jorge López-Tello, Abigail L Fowden, Miguel Constancia
Pregnancy success and life-long health depend on a cooperative interaction between the mother and the fetus in the allocation of resources. As the site of materno-fetal nutrient transfer, the placenta is central to this interplay; however, the relative importance of the maternal versus fetal genotypes in modifying the allocation of resources to the fetus is unknown. Using genetic inactivation of the growth and metabolism regulator, Pik3ca (encoding PIK3CA also known as p110α, α/+), we examined the interplay between the maternal genome and the fetal genome on placental phenotype in litters of mixed genotype generated through reciprocal crosses of WT and α/+ mice...
October 4, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27604528/placental-origins-of-chronic-disease
#18
REVIEW
Graham J Burton, Abigail L Fowden, Kent L Thornburg
Epidemiological evidence links an individual's susceptibility to chronic disease in adult life to events during their intrauterine phase of development. Biologically this should not be unexpected, for organ systems are at their most plastic when progenitor cells are proliferating and differentiating. Influences operating at this time can permanently affect their structure and functional capacity, and the activity of enzyme systems and endocrine axes. It is now appreciated that such effects lay the foundations for a diverse array of diseases that become manifest many years later, often in response to secondary environmental stressors...
October 2016: Physiological Reviews
https://www.readbyqxmd.com/read/27577707/3d-power-doppler-ultrasound-assessment-of-placental-perfusion-during-uterine-contraction-in-labor
#19
Miki Sato, Junko Noguchi, Masato Mashima, Hirokazu Tanaka, Toshiyuki Hata
INTRODUCTION: To assess placental perfusion during spontaneous or induced uterine contraction in labor at term using placental vascular sonobiopsy (PVS) by 3D power Doppler ultrasound with the VOCAL imaging analysis program. METHOD: PVS was performed in 50 normal pregnancies (32 in spontaneous labor group [SLG], and 18 in induced labor group with oxytocin or prostaglandin F2α [ILG]) at 37-41 weeks of gestation to assess placental perfusion during uterine contraction in labor...
September 2016: Placenta
https://www.readbyqxmd.com/read/27577579/objective-measures-of-prenatal-alcohol-exposure-a-systematic-review
#20
REVIEW
Cheryl McQuire, Shantini Paranjothy, Lisa Hurt, Mala Mann, Daniel Farewell, Alison Kemp
CONTEXT: Objective measurement of prenatal alcohol exposure (PAE) is essential for identifying children at risk for adverse outcomes, including fetal alcohol spectrum disorders. Biomarkers have been advocated for use in universal screening programs, but their validity has not been comprehensively evaluated. OBJECTIVE: To systematically review the validity of objective measures of PAE. DATA SOURCES: Thirteen electronic databases and supplementary sources were searched for studies published between January 1990 and October 2015...
September 2016: Pediatrics
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