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Placenta extract

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https://www.readbyqxmd.com/read/28490442/dexamethasone-and-sex-regulate-placental-glucocorticoid-receptor-isoforms-in-mice
#1
James Sm Cuffe, Zarqa Saif, Anthony V Perkins, Karen M Moritz, Vicki L Clifton
Maternal dexamethasone exposure in the mouse impairs placental development and programs adult disease in a sexually dimorphic manner. Glucocorticoids bind to different glucocorticoid receptor (GR) isoforms to regulate gene transcription and cellular signaling. We hypothesized that sexually dimorphic placental responses to glucocorticoids are due to differences in GR isoforms present in the placenta. Pregnant C57Bl6 mice were exposed to saline or dexamethasone from E12.5 until E14.5 (1µg/kg/h) before the collection of placentae...
May 10, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28487019/dynamic-contrast-enhanced-mri-of-the-placenta-a-tool-for-prenatal-diagnosis-of-placenta-accreta
#2
A E Millischer, B Deloison, S Silvera, Y Ville, N Boddaert, D Balvay, N Siauve, C A Cuenod, V Ttsatsaris, L Sentilhes, L J Salomon
BACKGROUND: Ultrasound (US) is the primary imaging modality for the diagnosis of placenta accreta, but it is not sufficiently accurate. MRI morphologic criteria have recently emerged as a useful tool in this setting, but their analysis is too subjective. Recent studies suggest that gadolinium enhancement may help to distinguish between the stretched myometrium and placenta within a scar area. However, objective MRI criteria are still required for prenatal diagnosis of placenta accreta...
May 2017: Placenta
https://www.readbyqxmd.com/read/28449642/the-effectiveness-of-double-incision-technique-in-uterus-preserving-surgery-for-placenta-percreta
#3
Ibrahim Polat, Burak Yücel, Ali Gedikbasi, Halil Aslan, Aysun Fendal
BACKGROUND: Placenta percreta is a life-threatening condition that places patients at risk of massive bleeding. It necessitates very complicated surgery and can result in mortality. Caesarean hysterectomy is the accepted procedure worldwide; however, recent studies discussing conservative treatment with segmental resections have been published. Foetal extraction and segmental resection can be performed through the same incision (single uterine incision) or through two different incisions (double uterine incision)...
April 27, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28448910/exposure-to-2-2-4-4-tetrabromodiphenyl-ether-at-late-gestation-modulates-placental-signaling-molecules-in-the-mouse-model
#4
Yun Zhu, Yan Qin Tan, Lai K Leung
Polybrominated diphenyl ethers (PBDEs) are flame retardants generally employed in manufacturing household items. Surface water may remove and carry these chemicals to the drainage upon disposal of the items, and ultimately the chemicals enter our food chain. 2,2',4,4'-Tetrabromodiphenyl ether (BDE-47) is a PBDE congener commonly found in contaminated seafood. The placenta is the site of nutrient exchange and is responsible for reproductive hormone secretion during pregnancy. In the present study, pregnant ICR mice were given p...
April 22, 2017: Chemosphere
https://www.readbyqxmd.com/read/28446590/effects-of-rna-integrity-on-transcript-quantification-by-total-rna-sequencing-of-clinically-collected-human-placental-samples
#5
Mario Reiman, Maris Laan, Kristiina Rull, Siim Sõber
RNA degradation is a ubiquitous process that occurs in living and dead cells, as well as during handling and storage of extracted RNA. Reduced RNA quality caused by degradation is an established source of uncertainty for all RNA-based gene expression quantification techniques. RNA sequencing is an increasingly preferred method for transcriptome analyses, and dependence of its results on input RNA integrity is of significant practical importance. This study aimed to characterize the effects of varying input RNA integrity [estimated as RNA integrity number (RIN)] on transcript level estimates and delineate the characteristic differences between transcripts that differ in degradation rate...
April 26, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28444191/risks-of-miscarriage-or-preterm-delivery-in-trichorionic-and-dichorionic-triplet-pregnancies-with-embryo-reduction-versus-expectant-management-a-systematic-review-and-meta-analysis
#6
C Anthoulakis, T Dagklis, A Mamopoulos, A Athanasiadis
STUDY QUESTION: Is pregnancy outcome in triplet pregnancies improved with embryo reduction (ER) to twins compared to expectant management? SUMMARY ANSWER: In trichorionic triplet pregnancies, ER to twins reduces the risk of preterm birth (<34 weeks) without significantly increasing the risk of miscarriage (<24 weeks), whereas in dichorionic triplet pregnancies, the results are inconclusive. WHAT IS KNOWN ALREADY: Triplet pregnancies are associated with a high risk of miscarriage and preterm birth...
June 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28436167/placental-histopathology-associated-with-preeclampsia-a-systematic-review-and-meta-analysis
#7
REVIEW
Maria Letizia Falco, Janani Sivanathan, Arianna Laoreti, Basky Thilaganathan, Asma Khalil
OBJECTIVES: Preeclampsia is associated with impaired trophoblast invasion and typical villous and vascular placental lesions. The primary aim was to conduct a systematic review in order to quantify the prevalence of placental histopathological lesions in pregnancies complicated by preeclampsia. METHODS: MEDLINE, EMBASE and CINAHL were searched electronically and relevant articles reporting placental histopathological lesions were assessed according to the following criteria: study design, number of pregnancies, type of preeclampsia and whether the pathologist was blinded to the clinical information...
April 23, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28434745/hot-topic-16s-rrna-gene-sequencing-reveals-the-microbiome-of-the-virgin-and-pregnant-bovine-uterus
#8
S G Moore, A C Ericsson, S E Poock, P Melendez, M C Lucy
We tested the hypothesis that the uterus of virgin heifers and pregnant cows possessed a resident microbiome by 16S rRNA gene sequencing of the virgin and pregnant bovine uterus. The endometrium of 10 virgin heifers in estrus and the amniotic fluid, placentome, intercotyledonary placenta, cervical lumen, and external cervix surface (control) of 5 pregnant cows were sampled using aseptic techniques. The DNA was extracted, the V4 hypervariable region of the 16S rRNA gene was amplified, and amplicons were sequenced using Illumina MiSeq technology (Illumina Inc...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28320535/optimization-of-selective-pressurized-liquid-extraction-of-organic-pollutants-in-placenta-to-evaluate-prenatal-exposure
#9
Tania Fernández-Cruz, Elena Martínez-Carballo, Jesús Simal-Gándara
The early exposure to organic pollutants (OPs) related to dietary habit or environmental exposure is a concern of growing interest in environmental health. When OPs enter the body, they can accumulate in fatty tissue and even travel through the bloodstream being able to cross the placenta and reach the fetus through the substance exchange between the mother and the child. Epidemiologic and clinical data affirm that these chemicals increase the risk of adverse effects during childhood. This article reviews and addresses one of the most relevant analytical methods for determining OPs in placenta...
April 28, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28293436/placental-vitamin-d-binding-protein-expression-in-human-idiopathic-fetal-growth-restriction
#10
Alice F Wookey, Tejasvy Chollangi, Hannah E J Yong, Bill Kalionis, Shaun P Brennecke, Padma Murthi, Harry M Georgiou
Vitamin D-binding protein is a multifunctional serum protein with multiple actions related to normal health. Vitamin D-binding protein transports vitamin D and influences the metabolism of this key hormone but it also has additional immunomodulatory and actin-clearing properties. We investigated whether vitamin D-binding protein expression is altered in fetal growth restriction-associated placental dysfunction. Protein was extracted from 35 placentae derived from 17 healthy control subjects and 18 gestation-matched subjects with fetal growth restriction (FGR)...
2017: Journal of Pregnancy
https://www.readbyqxmd.com/read/28282771/the-follicle-stimulating-hormone-receptor-asn680ser-polymorphism-is-associated-with-preterm-birth-in-hispanic-women
#11
Pablo Dominguez-Lopez, Laura Diaz-Cueto, Miguel Arechavaleta-Velasco, Felipe Caldiño-Soto, Alfredo Ulloa-Aguirre, Fabian Arechavaleta-Velasco
OBJECTIVE: Recently, a study based on the analysis of accelerated evolution of related genes at birth identified the follicle-stimulating hormone receptor (FSHR) as a possible candidate for the development of preterm delivery. Additionally, FSHR expression has been described in extragonadal tissue including the placenta. Therefore, the aim of the present study was to determine the association between the N680S polymorphism of the follicle-stimulating hormone receptor and preterm birth in a population of Hispanic women...
February 28, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28273703/-the-composition-of-the-gastrointestinal-bacterial-flora-of-mouse-embryos-and-the-placenta-tissue-bacterial-flora
#12
D Lei, Y Lin, X Jiang, L Lan, W Zhang, B X Wang
Objective: To explore the composition of the gastrointestinal bacterial flora of mouse embryos and the placenta tissue bacterial flora. Method: Twenty-four specimens were collected from pregnant Kunming mouse including 8 mice of early embryonic (12-13 days) gastrointestinal tissues, 8 cases of late embryonic (19-20 days)gastrointestinal tissues, 8 of late pregnancy placental tissues.The 24 samples were extracted by DNeasy Blood & Tissue kit for high-throughput DNA sequencing. Result: The level of Proteobacteria, Bacteroidetes, Actino-bacteria and Firmicutes were predominantin all specimens...
March 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28252405/placenta-maps-in-utero-placental-health-assessment-of-the-human-fetus
#13
Haichao Miao, Gabriel Mistelbauer, Alexey Karimov, Amir Alansary, Alice Davidson, David Lloyd, Mellisa Damodaram, Lisa Story, Jana Hutter, Joseph Hajnal, Mary Rutherford, Bernhard Preim, Bernhard Kainz, M Eduard Groller
The human placenta is essential for the supply of the fetus. To monitor the fetal development, imaging data is acquired using ultrasound (US). Although it is currently the gold-standard in fetal imaging, it might not capture certain abnormalities of the placenta. Magnetic resonance imaging (MRI) is a safe alternative for the in utero examination while acquiring the fetus data in higher detail. Nevertheless, there is currently no established procedure for assessing the condition of the placenta and consequently the fetal health...
February 24, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28202794/evaluation-of-toxoplasma-elite-mgb-real-time-pcr-assay-for-diagnosis-of-toxoplasmosis
#14
Florence Robert-Gangneux, Marie-Pierre Brenier-Pinchart, Hélène Yera, Sorya Belaz, Emmanuelle Varlet-Marie, Patrick Bastien
Molecular diagnosis of congenital toxoplasmosis or disseminated toxoplasmosis is based mainly on PCR. The repeated DNA element rep529 has become the main DNA target used in most PCR methods, whether laboratory developed or commercial. In this multicenter study, we evaluated the Toxoplasma ELITe MGB (Elitech) commercial kit by comparison with three reference quantitative PCR assays (RAs) used routinely in three proficient laboratories of the French National Reference Center for Toxoplasmosis network, using Toxoplasma calibrated suspensions diluted to obtain a range of concentrations from 0...
May 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28188612/hepatitis-b-immunoglobulin-during-pregnancy-for-prevention-of-mother-to-child-transmission-of-hepatitis-b-virus
#15
REVIEW
Ahizechukwu C Eke, George U Eleje, Uzoamaka A Eke, Yun Xia, Jiao Liu
BACKGROUND: Hepatitis is a viral infection of the liver. It is mainly transmitted between people through contact with infected blood, frequently from mother to baby in-utero. Hepatitis B poses significant risk to the fetus and up to 85% of infants infected by their mothers at birth develop chronic hepatitis B virus (HBV) infection. Hepatitis B immunoglobulin (HBIG) is a purified solution of human immunoglobulin that could be administered to the mother, newborn, or both. HBIG offers protection against HBV infection when administered to pregnant women who test positive for hepatitis B envelope antigen (HBeAg) or hepatitis B surface antigen (HBsAg), or both...
February 11, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28181672/endometriosis-increases-the-risk-of-obstetrical-and-neonatal-complications
#16
Janne Foss Berlac, Dorthe Hartwell, Charlotte Wessel Skovlund, Jens Langhoff-Roos, Øjvind Lidegaard
INTRODUCTION: The objective was to assess obstetrical complications and neonatal outcomes in women with endometriosis as compared with women without endometriosis. MATERIAL AND METHODS: National cohort including all delivering women and their newborns in Denmark 1997-2014. Data were extracted from the Danish Health Register and the Medical Birth Register. Logistic regression analysis provided odds ratios (OR) with 95% confidence intervals (CI). Sub-analyses were made for primiparous women with a singleton pregnancy and for women with endometriosis who underwent gynecological surgery before pregnancy...
February 9, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28153653/prenatal-diagnosis-and-management-of-vasa-previa-in-twin-pregnancies-a%C3%A2-case-series-and%C3%A2-systematic-review
#17
REVIEW
Eric Jauniaux, Yaakov Melcer, Ron Maymon
BACKGROUND: Twin pregnancies are at higher risks of velamentous cord insertion and vasa previa. In vitro fertilization is an additional risk factor of abnormal cord insertion and thus the incidence of vasa previa is likely to increase over the next decades. OBJECTIVE: We sought to evaluate the role of ultrasound imaging in optimizing the management of twins diagnosed with vasa previa antenatally. STUDY DESIGN: We searched our database for twin pregnancies diagnosed with vasa previa and managed antenatally using measurements of cervical length and performed a systematic review of articles that correlated prenatal diagnosis of vasa previa in twins and pregnancy outcome...
January 30, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28138995/time-course-analysis-of-rna-quality-in-placenta-preserved-by-rnalater-or-flash-freezing
#18
Nicole M Martin, Katherine M Cooke, Caitlin C Radford, Lauren E Perley, Michelle Silasi, Clare A Flannery
PROBLEM: Preservation of biospecimen quality is critical to accurately and reliably assessing genes and proteins. We evaluated the effect of preparation method and storage duration on RNA quality in placenta and decidua. METHOD OF STUDY: Aliquots of nine placentas and decidua were placed in RNAlater(®) (RL) or flash frozen (FF) within 30 minutes of delivery. RNA was extracted immediately (baseline) and from matched samples stored at -80°C for 1 and 8-10 months...
April 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28130302/distinct-growth-and-secretome-strategies-for-two-taxonomically-divergent-brown-rot-fungi
#19
Gerald N Presley, Jonathan S Schilling
Brown rot fungi are wood-degrading fungi that employ both oxidative and hydrolytic mechanisms to degrade wood. Hydroxyl radicals that facilitate the oxidative component are powerful nonselective oxidants and are incompatible with hydrolytic enzymes unless they are spatially segregated in wood. Differential gene expression has been implicated in the segregation of these reactions in Postia placenta, but it is unclear if this two-step mechanism varies in other brown rot fungi with different traits and life history strategies that occupy different niches in nature...
April 1, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28129936/assessment-of-parabens-and-ultraviolet-filters-in-human-placenta-tissue-by-ultrasound-assisted-extraction-and-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry
#20
F Vela-Soria, M E Gallardo-Torres, O Ballesteros, C Díaz, J Pérez, A Navalón, M F Fernández, N Olea
Increasing concerns have been raised over recent decades about human exposure to Endocrine Disrupting Chemicals (EDCs), especially about their possible effects on embryo, foetus, newborn, and child. Parabens (PBs) and ultraviolet filters (UV-filters) are prevalent EDCs widely used as additives in cosmetics and personal care products (PCPs). The objective of this study was to determine the presence of four PBs and ten UV-filters in placental tissue samples using a novel analytical method based on ultrasound-assisted extraction (UAE) and ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS)...
March 3, 2017: Journal of Chromatography. A
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