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https://www.readbyqxmd.com/read/28337265/pulmonary-surfactant-synthesis-in-mirna-26a-1-mirna-26a-2-double-knockout-mice-generated-using-the-crispr-cas9-system
#1
Ying-Hui Zhang, Li-Zhi Wu, Hong-Lu Liang, Yang Yang, Jie Qiu, Qing Kan, Wen Zhu, Cheng-Ling Ma, Xiao-Yu Zhou
Pulmonary surfactant (PS), which is synthesized by type II alveolar epithelial cells (AECIIs), maintains alveolar integrity by reducing surface tension. Many premature neonates who lack adequate PS are predisposed to developing respiratory distress syndrome (RDS), one of the leading causes of neonatal morbidity and mortality. PS synthesis is influenced and regulated by various factors, including microRNAs. Previous in vitro studies have shown that PS synthesis is regulated by miR-26a in fetal rat AECIIs. This study aimed to investigate the role of miR-26a in PS synthesis in vivo...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28336912/fgf21-regulates-t-cell-development-in-the-neonatal-and-juvenile-thymus
#2
Yoshiaki Nakayama, Yuki Masuda, Hiroya Ohta, Tomohiro Tanaka, Miwa Washida, Yo-Ichi Nabeshima, Ayumi Miyake, Nobuyuki Itoh, Morichika Konishi
We have previously shown that Fibroblast growth factor 21 (Fgf21) is expressed in the thymus as well as in the liver. In line with this expression profile, Fgf21 was recently reported to protect against ageing-related thymic senescence by improving the function of thymic epithelial cells (TECs). However, the function of Fgf21 in the juvenile thymus remained to be elucidated. We investigated the physiological roles of Fgf21 in the juvenile thymus and found that young Fgf21 knockout mice, but not β-Klotho knockout mice nor adult Fgf21 knockout mice, showed a significant reduction in the percentage of single-positive CD4(+) and CD8(+) thymocytes without obvious alteration in TECs...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28334563/quality-improvement-initiatives-lead-to-reduction-in-nulliparous-term-singleton-vertex-cesarean-delivery-rate
#3
Mary A Vadnais, Michele R Hacker, Neel T Shah, JoAnn Jordan, Anna M Modest, Molly Siegel, Toni H Golen
BACKGROUND: The nulliparous term singleton vertex (NTSV) cesarean delivery rate has been recognized as a meaningful benchmark. Variation in the NTSV cesarean delivery rate among hospitals and providers suggests many hospitals may be able to safely improve their rates. The NTSV cesarean delivery rate at the authors' institution was higher than state and national averages. This study was conducted to determine the influence of a set of quality improvement interventions on the NTSV cesarean delivery rate...
February 2017: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28333816/committee-opinion-no-696-nonobstetric-surgery-during-pregnancy
#4
(no author information available yet)
The American College of Obstetricians and Gynecologists' Committee on Obstetric Practice acknowledges that the issue of nonobstetric surgery during pregnancy is an important concern for physicians who care for women. It is important for a physician to obtain an obstetric consultation before performing nonobstetric surgery and some invasive procedures (eg, cardiac catheterization or colonoscopy) because obstetricians are uniquely qualified to discuss aspects of maternal physiology and anatomy that may affect intraoperative maternal-fetal well-being...
April 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28333795/diagnostic-tests-for-evaluation-of-stillbirth-results-from-the-stillbirth-collaborative-research-network
#5
Jessica M Page, Lauren Christiansen-Lindquist, Vanessa Thorsten, Corette B Parker, Uma M Reddy, Donald J Dudley, George R Saade, Donald Coustan, Carol J Rowland Hogue, Deborah Conway, Radek Bukowski, Halit Pinar, Cara C Heuser, Karen J Gibbins, Robert L Goldenberg, Robert M Silver
OBJECTIVE: To estimate the usefulness of each diagnostic test in the work-up for potential causes of stillbirth. METHODS: A secondary analysis of 512 stillbirths enrolled in the Stillbirth Collaborative Research Network from 2006 to 2008 was performed. The Stillbirth Collaborative Research Network was a multisite, geographically, racially, and ethnically diverse, population-based study of stillbirth in the United States. Participants underwent standardized evaluations that included maternal interview, medical record abstraction, biospecimen collection, fetal autopsy, and placental pathology...
April 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28333318/a-phase-iii-randomized-controlled-trial-comparing-the-efficacy-safety-and-tolerability-of-oral-dydrogesterone-versus-micronized-vaginal-progesterone-for-luteal-support-in-in-vitro-fertilization
#6
Herman Tournaye, Gennady T Sukhikh, Elke Kahler, Georg Griesinger
STUDY QUESTION: Is oral dydrogesterone 30 mg daily (10 mg three times daily [TID]) non-inferior to micronized vaginal progesterone (MVP) 600 mg daily (200 mg TID) for luteal support in in vitro fertilization (IVF), assessed by the presence of fetal heartbeats determined by transvaginal ultrasound at 12 weeks of gestation? SUMMARY ANSWER: Non-inferiority of oral dydrogesterone versus MVP was demonstrated at 12 weeks of gestation, with a difference in pregnancy rate and an associated confidence interval (CI) that were both within the non-inferiority margin...
March 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333275/anti-m%C3%A3-llerian-hormone-inhibits-activation-and-growth-of-bovine-ovarian-follicles-in-vitro-and-is-localized-to-growing-follicles
#7
M Y Yang, R A Cushman, J E Fortune
STUDY QUESTION: Does anti-Müllerian hormone (AMH) inhibit activation (initiation of growth) of primordial follicles and attenuate the growth of primary follicles in cattle, an excellent animal model for human ovarian follicular development? SUMMARY ANSWER: AMH inhibited activation of bovine primordial follicles and attenuated the growth of activated follicles in vitro. WHAT IS KNOWN ALREADY: In mice null mutant for AMH, the pool of primordial follicles is depleted prematurely and AMH inhibits follicle activation in vitro...
March 17, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28333238/clustering-of-pcos-like-traits-in-naturally-hyperandrogenic-female-rhesus-monkeys
#8
D H Abbott, B H Rayome, D A Dumesic, K C Lewis, A K Edwards, K Wallen, M E Wilson, S E Appt, J E Levine
STUDY QUESTION: Do naturally occurring, hyperandrogenic (≥1 SD of population mean testosterone, T) female rhesus monkeys exhibit traits typical of women with polycystic ovary syndrome (PCOS)? SUMMARY ANSWER: Hyperandrogenic female monkeys exhibited significantly increased serum levels of androstenedione (A4), 17-hydroxyprogesterone (17-OHP), estradiol (E2), LH, antimullerian hormone (AMH), cortisol, 11-deoxycortisol and corticosterone, as well as increased uterine endometrial thickness and evidence of reduced fertility, all traits associated with PCOS...
March 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28331377/management-of-systemic-lupus-erythematosus-during-pregnancy-challenges-and-solutions
#9
REVIEW
Caroline L Knight, Catherine Nelson-Piercy
Systemic lupus erythematosus (SLE) is a chronic, multisystem autoimmune disease predominantly affecting women, particularly those of childbearing age. SLE provides challenges in the prepregnancy, antenatal, intrapartum, and postpartum periods for these women, and for the medical, obstetric, and midwifery teams who provide their care. As with many medical conditions in pregnancy, the best maternal and fetal-neonatal outcomes are obtained with a planned pregnancy and a cohesive multidisciplinary approach. Effective prepregnancy risk assessment and counseling includes exploration of factors for poor pregnancy outcome, discussion of risks, and appropriate planning for pregnancy, with consideration of discussion of relative contraindications to pregnancy...
2017: Open Access Rheumatology: Research and Reviews
https://www.readbyqxmd.com/read/28331361/maternal-anxiety-and-its-correlation-with-pain-experience-during-chorion-villus-sampling-and-amniocentesis
#10
Katharina Klages, Sudip Kundu, Joachim Erlenwein, Michael Elsaesser, Peter Hillemanns, Alexander Scharf, Ismini Staboulidou
PURPOSE: Invasive prenatal diagnostic procedures, such as chorion villus sampling (CVS) and amniocentesis (AC), are routinely performed to exclude or diagnose fetal chromosomal abnormalities. The aim of this study was to investigate anxiety-dependent pain experience during CVS and AC and the potential factors that increase anxiety and pain levels. PATIENTS AND METHODS: During a 2-year period, women undergoing invasive procedures in three specialist centers were asked to participate in the study...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28331165/tim-3-and-pd-1-regulate-cd8-t-cell-function-to-maintain-early-pregnancy-in-mice
#11
Yuan-Yuan Xu, Song-Cun Wang, Yi-Kong Lin, Da-Jin Li, Mei-Rong DU
During pregnancy, CD8(+) T cells are important regulators in the balance of fetal tolerance and antiviral immunity. T-cell immunoglobulin mucin-3 (Tim-3) and programmed cell death-1 (PD-1) are well-recognized negative co-stimulatory molecules involved in viral persistence and tumor metastasis. Here, we demonstrate that CD8(+) T cells co-expressing Tim-3 and PD-1 were down-regulated in the deciduae of female mice in abortion-prone matings compared with normal pregnant mice. In addition to their reduced numbers, the Tim-3(+)PD-1(+)CD8(+) T cells produced lower levels of the anti-inflammatory cytokines interleukin (IL)-4 and IL-10, as well as a higher level of the pro-inflammatory cytokine interferon (IFN)-γ, relative to those from normal pregnancy...
March 23, 2017: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/28330503/caffeine-modulates-glucocorticoid-induced-expression-of-ctgf-in-lung-epithelial-cells-and-fibroblasts
#12
Markus Fehrholz, Kirsten Glaser, Christian P Speer, Silvia Seidenspinner, Barbara Ottensmeier, Steffen Kunzmann
BACKGROUND: Although caffeine and glucocorticoids are frequently used to treat chronic lung disease in preterm neonates, potential interactions are largely unknown. While anti-inflammatory effects of glucocorticoids are well defined, their impact on airway remodeling is less characterized. Caffeine has been ascribed to positive effects on airway inflammation as well as remodeling. Connective tissue growth factor (CTGF, CCN2) plays a key role in airway remodeling and has been implicated in the pathogenesis of chronic lung diseases such as bronchopulmonary dysplasia (BPD) in preterm infants...
March 23, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28327735/reverse-micelle-based-water-soluble-nanoparticles-for-simultaneous-bioimaging-and-drug-delivery
#13
Ying Chen, Yong Liu, Yongchao Yao, Shiyong Zhang, Zhongwei Gu
With special confined water pools, reverse micelles (RMs) have shown potential for a wide range of applications. However, the inherent water-insolubility of RMs hinders their further application prospects, especially for applications related to biology. We recently reported the first successful transfer of RMs from organic media to an aqueous phase without changing the smart water pools by the hydrolysis of an arm-cleavable interfacial cross-linked reverse micelles. Herein, we employed another elaborate amphiphile 1 to construct new acrylamide-based cross-linked water-soluble nanoparticles (ACW-NPs) under much gentler conditions...
March 22, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28327604/chymase-producing-cells-of-the-innate-immune-system-are-required-for-decidual-vascular-remodeling-and-fetal-growth
#14
Nicole Meyer, Katja Woidacki, Martin Knöfler, Gudrun Meinhardt, Désirée Nowak, Philipp Velicky, Jürgen Pollheimer, Ana C Zenclussen
Intrauterine growth restriction (IUGR) is caused by insufficient remodeling of spiral arteries (SAs). The mechanism underlying the relevance of natural killer cells (NKs) and mast cells (MCs) for SA remodeling and its effects on pregnancy outcome are not well understood. We show that NK depletion arrested SA remodeling without affecting pregnancy. MC depletion resulted in abnormally remodeled SAs and IUGR. Combined absence of NKs and MCs substantially affected SA remodeling and impaired fetal growth. We found that α-chymase mast cell protease (Mcpt) 5 mediates apoptosis of uterine smooth muscle cells, a key feature of SA remodeling...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28326962/intrauterine-fetal-death-with-vanishing-gastroschisis-and-post-mortem-examination-findings
#15
Alexandra Frances Jolley, Elizabeth Jane Beare, Jeremy Granger, Catherine Lucy Cord-Udy, Peter Muller, Lynette Moore
We present a severe case of vanishing gastroschisis resulting in intrauterine death with post mortem examination findings. Gastroschisis is defined as a full thickness paraumbilical abdominal wall defect associated with evisceration of fetal intestine. It is almost always right-sided. Vanishing gastroschisis is an extremely rare form of gastroschisis that results in short bowel syndrome due to exteriorized bowel disconnected from the lumen of the rest of the bowel proximally as well as distally in association with partial or complete closure of the abdominal wall...
March 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28326464/meningiomas-in-pregnancy-timing-of-surgery-and-clinical-outcomes-as-observed-in-104-cases-and-establishment-of-a-best-management-strategy
#16
REVIEW
Yosef Laviv, Ahmed Bayoumi, Anand Mahadevan, Brett Young, Myles Boone, Ekkehard M Kasper
BACKGROUND: There is a strong correlation between the level of circulating female sex hormones and the parturient growth of meningiomas. As a result, rapid changes in meningioma size occur during pregnancy, putting both the mother and fetus at risk. Large, symptomatic meningiomas require surgical resection, regardless of the status of pregnancy. However, the preferred timing of such complex intervention is a matter of debate. The rarity of this clinical scenario and the absence of prospective trials make it difficult to reach evidence-based conclusions...
March 22, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28324997/assessing-the-development-of-fetal-myocardial-function-by-a-novel-doppler-myocardial-performance-index
#17
Ahsan H Khandoker, F Marzbanrad, Y Kimura, Saeed Al Nuaimi, M Palaniswami
Doppler-derived myocardial performance index are used to assess aspects of systolic and diastolic function in adult as well as fetal heart. The Tei Index (TI) is a useful and non-invasive tool. The aim of this study was to determine normal values of fetal left ventricular (LV) TI in early (16-32 weeks) and late trimester (35-41 weeks) fetuses and to develop a new myocardial performance index (K-index; KI) which focuses on fetal diastolic interval when oxygenated blood from the placenta filled in the LV. Simultaneous recordings of Doppler Ultrasound Signal (DUS) of the LV outflow tracts and fetal electrocardiogram signals were obtained in 55 early- and late-trimester fetuses...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324259/protective-effect-of-nigella-sativa-seeds-against-spermatocyte-chromosomal-aberrations-and-genotoxicity-induced-by-carbon-tetrachloride-in-mice
#18
Ashraf M Abdel-Moneim, Amina E Essawy, Sherifa S Hamed, Ashgan A Abou-Gabal, Aglal A Alzergy
Nigella sativa is a well-known dietary antioxidant and a valuable inhibitor of clastogenesis and carcinogenesis. The purpose of the present work was to investigate the effects of N. sativa seeds against chromosomal aberrations in primary spermatocytes and early embryonic lethality induced by CCl4 hepatotoxin in Swiss albino mice. One hundred male Swiss albino mice were randomly divided into five groups. Groups I, II, and III received only normal saline, olive oil, and aqueous suspension of N. sativa seeds (50 mg/kg b...
March 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28322735/stella-collaborates-in-distinct-mesendodermal-cell-subpopulations-at-the-fetal-placental-interface-in-the-mouse-gastrula
#19
Adam D Wolfe, Adriana M Rodriguez, Karen M Downs
The allantois-derived umbilical component of the chorio-allantoic placenta shuttles fetal blood to and from the chorion, thereby ensuring fetal-maternal exchange. The progenitor populations that establish and supply the fetal-umbilical interface lie, in part, within the base of the allantois, where the germ line is claimed to segregate from the soma. Results of recent studies in the mouse have reported that STELLA (DPPA-3, PGC7) co-localizes with PRDM1 (BLIMP1), the bimolecular signature of putative primordial germ cells (PGCs) throughout the fetal-placental interface...
March 16, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28322134/reproductive-microbiomes
#20
Michael L Power, Caroline Quaglieri, Jay Schulkin
Almost every part of our body has a coevolved microbial community. The expressed microbial genes comprise the various microbiomes that play important roles in normal physiology and development. The various microbiomes are separate, yet often connected, with the species composition of one affecting others. The female reproductive system microbiomes (eg, vaginal, placental, and mammary/milk) remain less well explored than the gut microbiome although they comprise a large proportion of the female microbial network...
January 1, 2017: Reproductive Sciences
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