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https://www.readbyqxmd.com/read/28724248/exposure-to-particulate-air-pollution-during-early-pregnancy-is-associated-with-placental-dna-methylation
#1
Jing Cai, Yan Zhao, Pengcheng Liu, Bin Xia, Qingyang Zhu, Xiu Wang, Qi Song, Haidong Kan, Yunhui Zhang
Maternal exposure to particulate matter with aerodynamic diameter <10μm (PM10) during pregnancy results in adverse birth outcomes. Changes in placental DNA methylation might mediate those adverse effects. In this study, we examined the associations between prenatal PM10 exposure and DNA methylation of LINE1, HSD11B2 and NR3C1 in human placenta. One hundred and eighty-one mother newborn pairs (80 fetal growth restriction newborns, 101 normal newborns) participated in this study. The average PM10 exposure of each trimester and of the whole pregnancy was calculated using daily air pollution concentration data...
July 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28723688/trigonelline-inhibits-inflammation-and-protects-%C3%AE-cells-to-prevent-fetal-growth-restriction-during-pregnancy-in-a-mouse-model-of-diabetes
#2
Ji-Yin Zhou, Xiao-Huang Du, Zuo Zhang, Gui-Sheng Qian
BACKGROUND: As an active component from traditional Chinese medicine, trigonelline has a protective effect on diabetes. This study evaluated the protective effects of trigonelline on diabetic mice during pregnancy. METHODS: Diabetes was induced in female mice by intraperitoneal injection for continuous 5-day of 40 mg/kg/day streptozotocin. Female mice were divided into 4 groups after they were allowed to mate with normal male mice: nondiabetic, nondiabetic treated with trigonelline (70 mg/kg) for 18 days, diabetic, and diabetic treated with trigonelline (70 mg/kg)...
July 20, 2017: Pharmacology
https://www.readbyqxmd.com/read/28723564/the-lysine-acetyltransferase-gcn5-is-required-for-inkt-cell-development-through-egr2-acetylation
#3
Yajun Wang, Chawon Yun, Beixue Gao, Yuanming Xu, Yana Zhang, Yiming Wang, Qingfei Kong, Fang Zhao, Chyung-Ru Wang, Sharon Y R Dent, Jian Wang, Xiangping Xu, Hua-Bin Li, Deyu Fang
The development of CD1d-restricted invariant natural killer T (iNKT) cells, a population that is critical for both innate and adaptive immunity, is regulated by multiple transcription factors, but the molecular mechanisms underlying how the transcriptional activation of these factors are regulated during iNKT development remain largely unknown. We found that the histone acetyltransferase general control non-derepressible 5 (GCN5) is essential for iNKT cell development during the maturation stage. GCN5 deficiency blocked iNKT cell development in a cell-intrinsic manner...
July 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28721929/obstetric-hemorrhages-at-the-chu-yalgado-ou%C3%A3-draogo-of-ouagadougou%C3%A2-etiological-therapeutic-and-prognostic-aspects
#4
D P Kain, R D Ajavon, H Zamané, S Kiemtore, Y A Sawadogo, I Ouédraogo
To evaluate the maternal and perinatal prognosis of obstetric hemorrhages in the maternity department of the Yalgado Ouédraogo University Hospital of Ouagadougou. This descriptive cross-sectional study conducted in the four-month period from April through July 2015 included all women consulting on an emergency basis for vaginal bleeding during pregnancy at or after 28 weeks of gestation, or during labor, delivery, or the postpartum period. Obstetric hemorrhages accounted for 6% of admissions. The women's mean age was 27...
July 19, 2017: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28721465/growth-of-children-born-to-renal-transplanted-women
#5
M Isabel S Dinelli, Erika Ono, Patrícia O Viana, Amélia M N Dos Santos, M Isabel de Moraes-Pinto
Neonates born to transplanted mothers are exposed to immunosuppressive drugs during gestation and have a higher risk of being born prematurely and small for gestational age than the general population. We have prospectively followed up 27 children born to renal transplanted mothers from a single center and 31 healthy children born at term with adequate weight for gestational age. Comparisons of weight and length measurements were made at birth, 1 month (±0.9), 3 months (±1.0), 6 months (±1.0), 9 months (±1...
July 18, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28721123/aborted-fetal-sizes-of-thoroughbred-horses-in-hidaka-japan-between-2005-and-2015
#6
Harutaka Murase, Masaki Miyazawa, Takehiro Harada, Midori Ozawa, Fumio Sato, Tetsuro Hada
The degree of fetal growth restriction has been unclear in equine reproduction. In this study, 2,195 fetuses from 2,137 abortions during 11 seasons were examined to determine the causes of abortion, and fetal size dimensions (crown rump length and body weight) were measured. In total, 900 cases (42.1%) of abortion were identified as caused by viral infection (215, 10.1%), bacterial infection (156, 7.3%), fungal infection (25, 1.2%), circulation failure (406, 19.0%), multiple causes (66, 3.1%), deformity (13, 0...
2017: Journal of Equine Science
https://www.readbyqxmd.com/read/28720553/response-to-growth-hormone-treatment-in-a-patient-with-insulin-like-growth-factor-1-receptor-igf1r-deletion
#7
Ranim Mahmoud, Ajanta Naidu, Hiba Risheg, Virginia Kimonis
We report a six year-old boy who presented with short stature, microcephaly, dysmorphic features and developmental delay, who was identified with a terminal deletion of 15q26.2q26.3 containing the insulin like growth factor receptor (IGF1R) gene, in addition to a terminal duplication of the 4q35.1q35.2 region. We compare our case with other reports of deletions and mutations affecting the IGF1R gene associated with pre-and postnatal growth restriction. We report the dramatic response to growth hormone therapy in this patient which highlights the importance of identifying patients with IGF1R deletion and treating them early...
July 17, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28719896/update-on-the-diagnosis-and-prognosis-of-preeclampsia-with-the-aid-of-the-sflt-1-plgf-ratio-in-singleton-pregnancies
#8
Ignacio Herraiz, Elisa Llurba, Stefan Verlohren, Alberto Galindo
Preeclampsia (PE) is involved in a group of obstetrical conditions closely related by the presence of placental dysfunction (PD), which also includes intrauterine growth restriction and placental abruption. The timely and accurate recognition and management of PE are often challenging because diagnostic criteria are still based on nonspecific signs and symptoms and because common severity criteria correlate poorly with adverse maternal and fetal outcomes. The discovery of the role of angiogenesis-related factors - soluble fms-like tyrosine kinase-1 (sFlt-1) and placental growth factor (PlGF) - in the underlying pathophysiology of PD has marked an important step for improving its early diagnosis and prognosis assessment before gestational week 34...
July 19, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28718893/association-between-maternal-vascular-murmur-and-the-small-for-gestational-age-fetus-with-abnormal-umbilical-artery-doppler-flow
#9
Diana Riknagel, Richard Farlie, Morten Hedegaard, Peter Humaidan, Johannes J Struijk
OBJECTIVE: To investigate the association between maternal vascular murmurs (MVMs) and fetal growth restriction (defined as small-for-gestational-age [SGA] fetus) and abnormal Doppler pulsatility index (PI) of the uterine and/or umbilical arteries. METHODS: A cross-sectional study of women aged 18 years or older with a singleton pregnancy at 28-34 weeks was conducted at Regional Hospital Viborg, Denmark, between May 1 and August 1, 2013. Ultrasound fetal biometry was performed and the Doppler PI of the umbilical and uterine arteries was determined...
July 18, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28718808/beta-palmitate-improves-bone-length-and-quality-during-catch-up-growth-in-young-rats
#10
Meytal Bar-Maisels, Yankel Gabet, Raanan Shamir, Sahar Hiram-Bab, Metsada Pasmanik-Chor, Moshe Phillip, Fabiana Bar-Yoseph, Galia Gat-Yablonski
Palmitic acid (PA) is the most abundant saturated fatty acid in human milk, where it is heavily concentrated in the sn-2-position (termed beta palmitate, BPA) and as such is conserved in all women, regardless of their diet or ethnicity, indicating its physiological and metabolic importance. We hypothesized that BPA improves the efficiency of nutrition-induced catch up growth as compared to sn-1,3 PA, which is present in vegetable oil. Pre-pubertal male rats were subjected to a 17 days food restriction followed by re-feeding for nine days with 1,3 PA or BPA-containing diets...
July 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28718414/epigenetics-and-cancer-stem-cells-unleashing-hijacking-and-restricting-cellular-plasticity
#11
REVIEW
Elanor N Wainwright, Paola Scaffidi
Epigenetic mechanisms have emerged as key players in cancer development which affect cellular states at multiple stages of the disease. During carcinogenesis, alterations in chromatin and DNA methylation resulting from genetic lesions unleash cellular plasticity and favor oncogenic cellular reprogramming. At later stages, during cancer growth and progression, additional epigenetic changes triggered by interaction with the microenvironment modulate cancer cell phenotypes and properties, and shape tumor architecture...
May 2017: Trends in Cancer
https://www.readbyqxmd.com/read/28718213/safety-and-dose-finding-trial-of-tadalafil-administered-for-fetal-growth-restriction-a-phase-1-clinical-study
#12
Michiko Kubo, Hiroaki Tanaka, Shintaro Maki, Masafumi Nii, Nao Murabayashi, Kazuhiro Osato, Yuki Kamimoto, Takashi Umekawa, Eiji Kondo, Tomoaki Ikeda
AIM: We designed a safety and dose-finding trial of tadalafil administered for fetal growth restriction (FGR). METHODS: Three cases were initially commenced on 10 mg/day and monitored for major adverse events. Should a major adverse event be observed in one or more of the three cases, an examination into its relation with tadalafil would be conducted by a safety evaluation committee. If one or more of these new cases exhibited the same adverse event, the trial would be stopped completely...
July 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28718186/intrauterine-growth-restriction-iugr-induces-signs-of-subclinical-atherosclerosis-in-6-year-old-infants-despite-absence-of-excessive-growth
#13
Anja Tzschoppe, Rüdiger von Kries, Ellen Struwe, Wolfgang Rascher, Helmuth-Guenther Dörr, Jörg Jüngert, Manfred Rauh, Matthias Beckmann, Ralf Schild, Tamme W Goecke, Jörg Dötsch
Background Postnatal catch-up growth and rapid weight gain after intrauterine growth restriction (IUGR) seem to increase the risk for later disease. This study aimed to compare features of the metabolic syndrome early in life between IUGR and appropriate for gestational age (AGA) infants. Patients Data for 9 infants with IUGR defined by a birth weight<10(th) percentile and ultrasound-proven placental insufficiency and 11 AGA children were available. Method Postnatal growth, auxological, cardiovascular, and metabolic parameters up to a chronological age of 6 years were assessed: Fasting serum concentrations of LDL-cholesterol, insulin, leptin, IGF-I, DHEAS, skinfold thicknesses, blood pressure, and mean carotid intima-media thickness (cIMT)...
July 2017: Klinische Pädiatrie
https://www.readbyqxmd.com/read/28717241/sca-1-identifies-a-trophoblast-population-with-multipotent-potential-in-the-mid-gestation-mouse-placenta
#14
Bryony V Natale, Christina Schweitzer, Martha Hughes, Maria A Globisch, Ramie Kotadia, Emilie Tremblay, Priscilla Vu, James C Cross, David R C Natale
Trophoblast stem (TS) cells in the mouse derive from the polar trophectoderm of the blastocyst and persist through early gestation (to E8.5) to support placental development. Further development and growth is proposed to rely on layer-restricted progenitor cells. Stem cell antigen (Sca) -1 is a member of the Ly6 gene family and a known marker of stem cells in both hematopoietic and non-hematopoietic mouse tissues. Having identified that Sca-1 mRNA was highly expressed in mouse TS cells in culture, we found that it was also expressed in a subset of trophoblast within the chorion and labyrinth layer of the mouse placenta...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28717216/random-mutagenesis-analysis-and-identification-of-a-novel-c2h2-type-transcription-factor-from-the-nematode-trapping-fungus-arthrobotrys-oligospora
#15
Dewei Jiang, Jing Zhou, Guizhen Bai, Xinjing Xing, Liyan Tang, Xuewei Yang, Juan Li, Ke-Qin Zhang, Jinkui Yang
Arthrobotrys oligospora is a typical nematode-trapping fungus. In this study, 37 transformants of A. oligospora were obtained by REMI (restriction enzyme mediated integration) method and phenotypic properties of nine transformants were analyzed. The nine transformants showed differences in growth, conidiation, trap formation, stress tolerance, and/or pathogenicity among each other and with those of the parental wild-type strain (WT). The insertional sites of the hph cassette were identified in transformants X5 and X13...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716993/low-soluble-fms-like-tyrosine-kinase-1-endoglin-and-endothelin-1-levels-in-women-with-confirmed-or-suspected-preeclampsia-using-proton-pump-inhibitors
#16
Langeza Saleh, Raaho Samantar, Ingrid M Garrelds, Anton H van den Meiracker, Willy Visser, A H Jan Danser
Patients with preeclampsia display elevated placenta-derived sFlt-1 (soluble Fms-like tyrosine kinase-1) and endoglin levels and decreased placental growth factor levels. Proton pump inhibitors (PPIs) decrease trophoblast sFlt-1 and endoglin secretion in vitro. PPIs are used during pregnancy to combat reflux disease. Here, we investigated whether PPIs affect sFlt-1 in women with confirmed/suspected preeclampsia, making use of a prospective cohort study involving 430 women. Of these women, 40 took PPIs (6 esomeprazole, 32 omeprazole, and 2 pantoprazole) for 8 to 45 (median 29) days before sFlt-1 measurement...
July 17, 2017: Hypertension
https://www.readbyqxmd.com/read/28715659/fetal-heart-rate-variation-after-corticosteroids-for-fetal-maturation
#17
Olga Knaven, Wessel Ganzevoort, Marjon de Boer, Hans Wolf
INTRODUCTION: Several studies report a decrease of fetal heart rate (FHR) short-term variation (STV) after corticosteroids for improvement of fetal maturity and advice not to deliver a fetus for low STV within 2-3days after corticosteroids. However, literature is not unanimous in this respect. This study intends to asses STV longitudinally after corticosteroid administration. MATERIAL AND METHODS: A retrospective cohort study in a tertiary perinatal centre from 2009 to 2015 included all women who had been treated with corticosteroids at gestational age of 26-34 weeks, had a computerized cardiotocography (cCTG) before and after medication and did not deliver within 48h...
June 29, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28715436/use-of-water-turnover-method-to-measure-mother-s-milk-flow-in-a-rat-model-application-to-dams-receiving-a-low-protein-diet-during-gestation-and-lactation
#18
Thomas Sevrin, Marie-Cécile Alexandre-Gouabau, Dominique Darmaun, Antoine Palvadeau, Agnès André, Patrick Nguyen, Khadija Ouguerram, Clair-Yves Boquien
Assessment of milk production is of utmost relevance for pediatricians and scientists interested in early life nutrition. The weight-suckle-weight (WSW) method, which consists of weighing babies before and after they suckle their mother, uses the difference in body weight as an estimate of milk intake. However, this is prone to many sources of error. In the current study, we used for the first time the water turnover method and compartmental analysis with deuterated water (D2O) as a non-toxic tracer to quantify in vivo milk production in a rat model...
2017: PloS One
https://www.readbyqxmd.com/read/28714969/endothelial-notch-signalling-limits-angiogenesis-via-control-of-artery-formation
#19
Sana S Hasan, Roman Tsaryk, Martin Lange, Laura Wisniewski, John C Moore, Nathan D Lawson, Karolina Wojciechowska, Hans Schnittler, Arndt F Siekmann
Angiogenic sprouting needs to be tightly controlled. It has been suggested that the Notch ligand dll4 expressed in leading tip cells restricts angiogenesis by activating Notch signalling in trailing stalk cells. Here, we show using live imaging in zebrafish that activation of Notch signalling is rather required in tip cells. Notch activation initially triggers expression of the chemokine receptor cxcr4a. This allows for proper tip cell migration and connection to the pre-existing arterial circulation, ultimately establishing functional arterial-venous blood flow patterns...
July 17, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28713909/effects-of-lentiviral-vector%C3%A2-mediated-shrna-silencing-of-tgf%C3%AE-1-on-the-expression-of-col1a1-in-rat-hepatic-stellate-cells
#20
Gan-Ping Bai, Guo-He Yan, Guo-Jian Wang, Ping Wan, Xiao-Fei Liu, Heng Wang, Rong-Hua Zhang
The present study aimed to construct a lentiviral RNA interference (RNAi) vector targeting the transforming growth factor β1 (TGFβ1) gene of rats, in order to examine its effect on silencing of the TGFβ1 gene and on the expression of collagen type 1 α1 (Col1a1) in HSC‑T6 rat hepatic stellate cells. Three RNAi sites of the TGFβ1 gene were selected according to its CDs sequence. Three pairs of small interfering RNA (siRNA) of these RNAi sites were synthesized and then transfected into HSC‑T6 cells, respectively, to confirm the optimal siRNA sequence via reverse transcription‑polymerase chain reaction analysis...
July 6, 2017: Molecular Medicine Reports
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