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https://www.readbyqxmd.com/read/28633553/giant-bullous-emphysema-with-placental-transmogrification-a-case-report-of-a-14-year-old-with-right-middle-and-lower-lobe-involvement
#1
Brett M Lowenthal, Nicholas C Saenz, Grace Y Lin, Robert O Newbury
Giant bullous emphysema with placental transmogrification is an extremely rare entity, with 30 previously reported cases. Of these reported cases, it is typically identified with varied clinical and radiological impressions, presents in young adulthood to elderly, is always unilateral, and usually involves just one lobe. Despite the unknown pathogenesis, this diagnosis carries an excellent prognosis and is curative with complete resection. The pulmonary placental transmogrification is histologically indistinguishable from placental origin...
June 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28633489/effects-of-early-pregnancy-on-uterine-lymphocytes-and-endometrial-expression-of-immune-regulatory-molecules-in-dairy-heifers1
#2
Sreelakshmi Vasudevan, Manasi M Kamat, Sadhat S Walusimbi, Joy L Pate, Troy L Ott
Natural killer (NK) cells are essential for establishment of human and rodent pregnancies. The function of these and other cytotoxic T cells (CTL) is controlled by stimulatory and inhibitory signaling. A role for cytotoxic cells during early pregnancy in cattle has not been described, but regulation of their function at the fetal-maternal interface is thought to be critical for conceptus survival. The hypothesis that the relative abundance of CTL and expression of inhibitory signaling molecules is increased by the conceptus during early pregnancy was tested...
June 19, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28633014/a-krabsody-for-embryo-placental-development
#3
Didier Trono
Many of the hundreds of KRAB zinc finger proteins encoded by human and mouse are involved in taming the transcriptional regulatory potential of transposable elements. Reporting recently in Science, Yang et al. (2017) reveal that one murine family member, ZFP568, controls Igf2 expression for proper embryonic and placental development.
June 19, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28632498/can-early-ultrasonography-explain-the-lower-miscarriage-rates-in-twin-as-compared-to-singleton-pregnancies-following-assisted-reproduction
#4
Ana Póvoa, Alexandra Matias, Pedro Xavier, Isaac Blickstein
OBJECTIVE: To compare first trimester 2D conventional and 3D power Doppler angiography measures in twins and singletons following assisted reproduction. METHODS: We prospectively evaluated 50 singleton and 47 twin pregnancies that eventually ended in live births. Patients were recruited from a single assisted reproductive technology (ART) center with standard treatment protocols. Obstetric ultrasound was performed at 8-9 weeks +6 days. Intervillous flow, uteroplacental circulation and uterine artery pulsatility (PI) and resistance index (RI) using two-dimensional (2D) ultrasound examination were evaluated...
June 20, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28631641/placental-histopathological-findings-in-preterm-term-and-early-late-onset-small-for-gestation-age-are-they-significant
#5
Rachna Agarwal, Akanksha Tiwari, Neelam Wadhwa, Gita Radhakrishnan
We undertook a prospective comparison of placental histopathological findings in preterm versus term and early onset versus late onset small for gestation age (SGA) to find more information on the etiological aspects of this disorder. A total of 130 women with nonanomalous SGA were allocated into preterm (n = 60); term (n = 70); early onset (n = 9) and late onset (n = 121) groups. The blinded intergroup placental histopathology comparison was performed both qualitatively (type of lesion) and quantitatively (number of the lesion)...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28631507/placental-thickness-to-estimated-foetal-weight-ratios-and-small-for-gestational-age-infants-at-delivery
#6
Ki Hoon Ahn, Joo Hak Lee, Geum Joon Cho, Soon-Cheol Hong, Min-Jeong Oh, Hai-Joong Kim
This study aimed to determine the correlation between the placental thickness-to-estimated foetal weight ratio on midterm ultrasonography and small-for-gestational-age (SGA) infants. In this retrospective study, the placental thickness at the umbilical cord insertion site was measured and adjusted for foetal body weight at 18-24 weeks gestation. Investigators compared the data of women who delivered SGA infants (birth weight <10th percentile) with those of women who delivered non-SGA infants. Among the 1281 women in this study, those who delivered SGA infants were younger and less likely to be obese...
June 20, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28631164/studies-on-vertical-transmission-of-trichinella-spiralis-in-experimentally-infected-guinea-pigs-cavia-porcellus
#7
Eliana Riva, Cesar Fiel, Gisele Bernat, Sebastián Muchiut, Pedro Steffan
An experimental study to enhance knowledge on the capability of Trichenella spiralis to pass from guinea pigs to progeny at different periods of pregnancy or lactation was performed. For this purpose, 18 female adult guinea pigs were inoculated with 100 or 1000 T. spiralis muscle larvae (ML) during early, late gestation and during lactation period. The presence of T. spiralis (ML) in mothers and newborns was studied through enzymatic digestion from muscle samples. ML were observed in 9 of 42 newborn guinea pigs and levels of infection were significantly higher when infections of mothers were done during late gestation (p = 0...
June 19, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28631072/down-regulation-of-soluble-fms-like-tyrosine-kinase-1-expression-in-invasive-placentation
#8
Scott A Shainker, Katelyn Dannheim, Kristin D Gerson, Dayna Neo, Zsuzsanna K Zsengeller, Elizabeth Pernicone, S Ananth Karumanchi, Michele R Hacker, Jonathan L Hecht
PURPOSE: To confirm reduced expression of soluble fms-like tyrosine kinase 1 (sFlt-1) in accreta/increta. METHODS: Formalin-fixed tissue sections from 11 peripartum hysterectomies with invasive placentation and 5 controls were stained for sFlt-1. Stain intensity was scored in selected 100× microscopic fields. We compared sFlt-1 expression in invasive areas among cases, non-invasive areas among cases and areas from control placentas. RESULTS: Chorionic villi displayed significantly decreased sFlt-1 expression in invasive areas of cases compared to control placentas (p = 0...
June 19, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28630870/placental-abca1-expression-is-increased-in-spontaneous-preterm-deliveries-compared-with-iatrogenic-preterm-deliveries-and-term-deliveries
#9
Xie Cheng-Mao, Long Yan, Lin Li, Jin Hua, Wang Xiao-Ju, Zhang Jie-Wen
OBJECTIVE: Abnormal expression of ABCA1 and ABCG1 in the placenta can elicit lipid metabolism disorder and adverse pregnancy outcomes. However, whether it is associated with preterm delivery remains unclear. Our present study aimed to evaluate the relationship between abnormal expression of ABCA1 or ABCG1 and preterm delivery. METHODS: Maternal blood and placental tissues from women with spontaneous deliveries (SPD), iatrogenic deliveries (IPD), and term deliveries (TD) were collected...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28630326/reconstruction-and-evolutionary-history-of-eutherian-chromosomes
#10
Jaebum Kim, Marta Farré, Loretta Auvil, Boris Capitanu, Denis M Larkin, Jian Ma, Harris A Lewin
Whole-genome assemblies of 19 placental mammals and two outgroup species were used to reconstruct the order and orientation of syntenic fragments in chromosomes of the eutherian ancestor and six other descendant ancestors leading to human. For ancestral chromosome reconstructions, we developed an algorithm (DESCHRAMBLER) that probabilistically determines the adjacencies of syntenic fragments using chromosome-scale and fragmented genome assemblies. The reconstructed chromosomes of the eutherian, boreoeutherian, and euarchontoglires ancestor each included >80% of the entire length of the human genome, whereas reconstructed chromosomes of the most recent common ancestor of simians, catarrhini, great apes, and humans and chimpanzees included >90% of human genome sequence...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28629246/clinical-significance-of-primary-symptoms-in-women-with-placental-abruption
#11
Youwen Mei, Yonghong Lina
BACKGROUND: To evaluate the clinical significance of primary symptoms in women with placental abruption. METHODS: A retrospective study of 273 cases of placental abruption was performed. The subjects were classified into 2 groups according to primary symptoms: 210 cases of vaginal bleeding group and 63 cases of abdominal pain group. The clinical features, maternal and neonatal outcomes were compared between two groups. RESULTS: The incidence of preeclampsia and preterm birth in vaginal bleeding group was significantly lower than abdominal pain group, while the incidence of premature rupture of membrane (PROM) in the former group was higher than that in the latter group...
June 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28628847/the-importance-of-declining-insulin-requirements-during-pregnancy-in-patients-with-pre-gestational-gestational-diabetes-mellitus
#12
Maya Ram, Larissa Feinmesser, Shiri Shinar, Sharon Maslovitz
OBJECTIVE: In patients with pre-gestational and gestational diabetes mellitus (GDM), insulin requirements often increase during the third trimester of pregnancy in order to maintain proper glycemic control. However, a fraction of patients demonstrate a significant decrease in insulin requirements in late gestation. We aimed to evaluate the clinical significance of decreasing insulin requirements in patients with pre-gestational diabetes and GDM with respect to fetal wellbeing and pregnancy outcome...
June 3, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28628137/-antagonistic-effect-of-quercetin-on-pm2-5-toxicity-in-the-rat-s-embryonic-development-in-vitro
#13
A Q Fan, J Q Feng, W Liu, M J Zhang, T Liu, Y L Zhou, Y J Xu
OBJECTIVE: To explore the antagonistic effect of quercetin on fine particulate matter (PM2.5)-induced embryonic developmental toxicity in vitro. METHODS: PM2.5 was collected on glass fiber filters by PM2.5 samplers during the heating period of Dec. 2015 to Mar. 2016 in an area of Haidian District, Beijing City. The sampled filters were cut into 1 cm×3 cm pieces followed by sonication. The PM2.5 suspension was filtered into a 10 cm glass dish through 8 layers of sterile carbasus and stored at -80 °C until freeze drying...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28628106/variants-in-the-fetal-genome-near-flt1-are-associated-with-risk-of-preeclampsia
#14
Ralph McGinnis, Valgerdur Steinthorsdottir, Nicholas O Williams, Gudmar Thorleifsson, Scott Shooter, Sigrun Hjartardottir, Suzannah Bumpstead, Lilja Stefansdottir, Lucy Hildyard, Jon K Sigurdsson, John P Kemp, Gabriela B Silva, Liv Cecilie V Thomsen, Tiina Jääskeläinen, Eero Kajantie, Sally Chappell, Noor Kalsheker, Ashley Moffett, Susan Hiby, Wai Kwong Lee, Sandosh Padmanabhan, Nigel A B Simpson, Vivien A Dolby, Eleonora Staines-Urias, Stephanie M Engel, Anita Haugan, Lill Trogstad, Gulnara Svyatova, Nodira Zakhidova, Dilbar Najmutdinova, Anna F Dominiczak, Håkon K Gjessing, Juan P Casas, Frank Dudbridge, James J Walker, Fiona Broughton Pipkin, Unnur Thorsteinsdottir, Reynir T Geirsson, Debbie A Lawlor, Ann-Charlotte Iversen, Per Magnus, Hannele Laivuori, Kari Stefansson, Linda Morgan
Preeclampsia, which affects approximately 5% of pregnancies, is a leading cause of maternal and perinatal death. The causes of preeclampsia remain unclear, but there is evidence for inherited susceptibility. Genome-wide association studies (GWAS) have not identified maternal sequence variants of genome-wide significance that replicate in independent data sets. We report the first GWAS of offspring from preeclamptic pregnancies and discovery of the first genome-wide significant susceptibility locus (rs4769613; P = 5...
June 19, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28627965/role-of-angiopoietin-2-endoglin-and-placental-growth-factor-in-hiv-associated-preeclampsia
#15
Nokuzola Mbhele, Jagidesa Moodley, Thajasvarie Naicker
OBJECTIVE: The factors angiopoeitin-2 (Ang-2), endoglin (Eng), and placental growth factor (PlGF) have been implicated in the pathophysiology of preeclampsia (PE). This study assessed their serum levels in HIV-negative and HIV-positive pregnant normotensive and pre-eclamptic women. METHODS: Participants were recruited at the antenatal clinic, serum samples were evaluated using the Bioplex Human Cancer Biomarker (panel 2). RESULTS: Ang-2 and Eng levels were higher, whilst PlGF levels were lower in the PE compared with the normotensive group...
June 19, 2017: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28627818/maternal-serum-plgf-pappa-%C3%AE-hcg-and-afp-levels-in-early-second-trimester-as-predictors-of-preeclampsia
#16
Honglei Duan, Guangfeng Zhao, Biyun Xu, Suwei Hu, Jie Li
BACKGROUND: Identifying women at risk of preeclampsia (PE) by maternal serum screening is conducive to prompt gestational management and thereby improve both maternal and perinatal outcomes. The purpose of the present study was to evaluate the association between the concentrations of maternal serum placental growth factor (PLGF), pregnancy associated plasma protein-A (PAPPA), free β-human chorionic gonadotropin (β-hCG), and αFetoprotein (AFP) and the development of preeclampsia early in the second trimester...
May 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28627774/decreased-expression-of-wnt2-in-villi-of-unexplained-recurrent-spontaneous-abortion-patients-may-cause-trophoblast-cell-dysfunction-via-downregulated-wnt-%C3%AE-catenin-signaling-pathway
#17
Ning Li, Shuhong Li, Yanwei Wang, Jiahui Wang, Kai Wang, Xin Liu, Yan Li, Juan Liu
WNT2 has been reported to be important for placental development, especially for the proper vascularization of the placenta. However, its precise role in first-trimester trophoblast cells is still unknown. WNT2 expression in the villous tissues of unexplained recurrent spontaneous abortion (URSA) patients was compared with that of healthy women by Western blot. The function of WNT2 in HTR-8/SVneo trophoblast cells was evaluated by altering the cellular WNT2 level through overexpression and shRNA knockdown. The molecular mechanism of the effect of WNT2 on trophoblast cells was investigated...
June 19, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28626073/increased-vascular-and-uteroplacental-matrix-metalloproteinase-1-and-7-levels-and-collagen-i-deposition-in-hypertension-in-pregnancy-role-of-tnf
#18
Wei Li, Ning Cui, Marc Q Mazzuca, Karina M Mata, Raouf A Khalil
Preeclampsia is manifested as maternal hypertension-in-pregnancy (HTN-Preg) and fetal growth restriction. Placental ischemia could be an initiating event; however, the molecular targets and intermediary mechanisms are unclear. We tested the hypothesis that placental ischemia could target vascular and uteroplacental matrix metalloproteinases (MMPs) through cytokines-mediated mechanism. MMP levels and distribution were measured in aorta, uterus and placenta of normal pregnant rats (Preg), and pregnant rats with reduced uterine perfusion pressure (RUPP)...
June 16, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28625360/hypoxia-primed-placental-mesenchymal-stem-cells-for-wound-healing
#19
Suja Ann Mathew, Bhawna Chandravanshi, Ramesh Bhonde
AIMS: To investigate how Placental Mesenchymal Stem Cells (P-MSCs) would adapt themselves and survive under hypoxic conditions which are prevalent in most injury sites. MAIN METHODS: P-MSCs were isolated from term placenta and characterised under normoxia and hypoxia (2-2.5% O2). Cells were examined for morphology and surface marker variations by flow cytometry analysis. Glucose stimulated insulin secretion was assayed by Insulin ELISA Kit. Gene expression levels were estimated using Real Time PCR for hypoxia inducible factor1 alpha, Insulin (INS), Glucose transporters (GLUT-1, GLUT-2 and GLUT-3), Adhesion Proteins- Integrins, Fibronectin1 (FN1), E-Cadherin (CDH1), and N-Cadherin (CDH2) and angiogenesis marker VEGFA...
June 15, 2017: Life Sciences
https://www.readbyqxmd.com/read/28625088/mitochondrial-content-and-hepcidin-are-increased-in-obese-pregnant-mothers
#20
G M Anelli, M Cardellicchio, C Novielli, P Antonazzo, M I Mazzocco, I Cetin, C Mandò
OBJECTIVE: Maternal obesity is characterized by systemic low-grade inflammation and oxidative stress (OxS) with the contribution of fetal sex dimorphism. We recently described increased mitochondrial content (mtDNA) in placentas of obese pregnancies. Here we quantify mtDNA and hepcidin as indexes of OxS and systemic inflammation in the obese maternal circulation. METHODS: Forty-one pregnant women were enrolled at elective Caesarean section: 16 were normal-weight [NW] and 25 were obese (OB)...
June 18, 2017: Journal of Maternal-fetal & Neonatal Medicine
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