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Premature delivery

Maria do Carmo Leal, Ana Paula Esteves-Pereira, Marcos Nakamura-Pereira, Jacqueline Alves Torres, Mariza Theme-Filha, Rosa Maria Soares Madeira Domingues, Marcos Augusto Bastos Dias, Maria Elizabeth Moreira, Silvana Granado Gama
BACKGROUND: The rate of preterm birth has been increasing worldwide, including in Brazil. This constitutes a significant public health challenge because of the higher levels of morbidity and mortality and long-term health effects associated with preterm birth. This study describes and quantifies factors affecting spontaneous and provider-initiated preterm birth in Brazil. METHODS: Data are from the 2011-2012 "Birth in Brazil" study, which used a national population-based sample of 23,940 women...
October 17, 2016: Reproductive Health
Márcia Lazaro de Carvalho, Cristiano Siqueira Boccolini, Maria Inês Couto de Oliveira, Maria do Carmo Leal
BACKGROUND: Breastfeeding in the first hour after birth is important for the success of breastfeeding and in reducing neonatal mortality. Government policies are being developed in this direction, highlighting the accreditation of hospitals in the Baby-Friendly Hospital (BFH) initiative. The aim of this study was to analyze the association between delivery in a BFH (main exposure), compared to non BFH, and timely initiation of breastfeeding (outcome). METHODS: Data came from the "Birth in Brazil" survey, a nationwide hospital-based study of postpartum women and their newborns, coordinated by the Oswaldo Cruz Foundation...
October 17, 2016: Reproductive Health
C Baeza, N Mottet, C Coppola, M Desmarets, R Ramanah, D Riethmuller
OBJECTIVE: To assess delivery mode, maternal morbidity including uterine rupture and scar dehiscence and neonatal outcome, during a pregnancy after a previous caesarean delivery before 32 weeks of amenorrhea. METHODS: A retrospective descriptive study was carried out at the Besançon University Hospital during an 8-year period. We identified 292 consecutive patients presenting a singleton pregnancy delivery before 32 weeks of amenorrhea. We analysed the next pregnancy...
October 17, 2016: Gynécologie, Obstétrique & Fertilité
L L Wang, R H Bai, Q Liu, Q Zhang, S N Dang, B B Mi, H Yan
Objective: To understand the incidence and epidemiological characteristics of adverse pregnancy outcome in Shaanxi province. Methods: General information of the study was derived from the prevalence and risk factors of birth defects in Shaanxi province in 2010-2013. Descriptive epidemiological method was used to analyze the data of adverse pregnancy outcome. Results: The overall incidence of adverse pregnancy outcome was 25.45% during 2010-2013 (26.84% in 2010, 26.11% in 2011, 24.96% in 2012 and 24.80% in 2013, respectively)...
October 10, 2016: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
M Schneider, I Schmeh, A Fruth, C Whybra-Trümpler, E Mildenberger
Monozygotic twins were previously regarded as "identical". By now an increasing number of case reports of monozygotic but discordant twins have been reported, and therefore discordance between monozygotic twins is being investigated intensively. We report a case of female preterm monozygotic twins who were discordant for fetal megacystis due to cloacal dysgenesis. Pregnancy was achieved after intracytoplasmatic sperm injection and transfer of 2 embryos. By the first trimester fetal megacystis with consecutive oligohydramnios and hypoplasia of the lungs was diagnosed...
October 2016: Zeitschrift Für Geburtshilfe und Neonatologie
Caiyan Zhao, Leihou Shao, Jianqing Lu, Chenying Zhao, Yujie Wei, Junxing Liu, Mingjun Li, Yan Wu
Stimuli-responsive nanocarriers with the ability to respond to tumorous heterogeneity have been extensively developed for drug delivery. However, the premature release during blood circulation and insufficient intracellular drug release are still a significant issue. Herein, three disulfide bonds are introduced into the amphiphilic poly(ethylene glycol)-polycaprolactone copolymer blocks to form triple-sensitive cleavable polymeric nanocarrier (tri-PESC NPs) to improve its sensitivity to narrow glutathione (GSH) concentration...
October 20, 2016: Macromolecular Bioscience
Lucille Arragain, Myrielle Dupont-Rouzeyrol, Olivia O'Connor, Nathalie Sigur, Jean-Paul Grangeon, Emilie Huguon, Clothilde Dechanet, Cécile Cazorla, Ann-Claire Gourinat, Elodie Descloux
: We investigated 10 mother-newborn pairs and found a 90% rate of dengue virus (DENV) transmission during the perinatal period. Here, we describe DENV kinetics in the sera of newborns before the onset of disease. Of the breast-milk samples analyzed, 75% tested positive for DENV. BACKGROUND: Dengue is the most common mosquito-borne viral disease in humans. With this study, we aimed to investigate the risk of vertical (DENV) transmission during the peripartum period and to describe its viral kinetics in serum and breast milk...
October 19, 2016: Journal of the Pediatric Infectious Diseases Society
Brodie Parent, Ira Martopullo, Noel S Weiss, Saurabh Khandelwal, Emily E Fay, Ali Rowhani-Rahbar
Importance: Metabolic changes after maternal bariatric surgery may affect subsequent fetal development. Many relevant perinatal outcomes have not been studied in this postoperative population, and the risks associated with short operation-to-birth (OTB) intervals have not been well examined. Objective: To examine the risk for perinatal complications in women with a history of bariatric surgery (postoperative mothers [POMs]) by comparing them with mothers without operations (nonoperative mothers [NOMs]) and examining the association of the OTB interval with perinatal outcomes...
October 19, 2016: JAMA Surgery
E G Deryabina, G V Yakornova, L A Pestryaeva, N D Sandyreva
Preterm birth is defined as all births before 37 completed weeks of gestation. Preterm birth can be further sub-divided based on gestational age: extremely preterm (<28 weeks), very preterm (28 to <32 weeks) and moderate preterm (32 to <37 weeks). Retrospective observational case-control study review (1 year i.e., 2015) is to assess pregnancy outcome among women with gestational diabetes mellitus (GDM) delivering very preterm (28 + 0/7 to 31 + 6/7 weeks of gestation). The study group included all women diagnosed with GDM and were compared to a control group of women delivering at the same gestational age period but without GDM...
October 2016: Gynecological Endocrinology
Judith Kikhney, Dinah von Schöning, Ina Steding, Julia Schulze, Annett Petrich, Andreas Hiergeist, Udo Reischl, Annette Moter, Anke Thomas
OBJECTIVES: The aim of this study was to detect microorganisms in foetal membranes and placental tissue in preterm chorioamnionitis by combining FISH with broad range PCR. The combination of the two molecular techniques enables identification and localization of the microorganisms within the tissue, confirming their clinical relevance. METHODS: In a prospective cohort study, we compared 31 patients with preterm premature rupture of membranes or preterm labour and preterm delivery by caesarean section with a control group of 26 participants with elective caesarean section at term...
October 15, 2016: Clinical Microbiology and Infection
Tim I M Korevaar, Eric A P Steegers, Victor J Pop, Maarten A Broeren, Layal Chaker, Yolanda B de Rijke, Vincent W V Jaddoe, Marco Medici, Theo J Visser, Henning Tiemeier, Robin P Peeters
CONTEXT: Thyroperoxidase antibody (TPOAb) positivity is the main risk factor for thyroid dysfunction during pregnancy and is consistently associated with premature delivery. However, the underlying mechanism is currently unknown. We hypothesized that TPOAb positivity may interfere with gestational thyroid stimulation induced by the pregnancy hormone human chorionic gonadotropin (hCG). DESIGN, SETTING AND PARTICIPANTS: TSH, FT4, TPOAbs and/or hCG concentrations were measured in early and late pregnancy of 7587 pregnant women from two Dutch population-based prospective cohorts (N=5924 Generation R; N=1663 HAPPY)...
October 18, 2016: Journal of Clinical Endocrinology and Metabolism
Tomofumi Fushima, Akiyo Sekimoto, Takahiro Minato, Takuya Ito, Yuji Oe, Kiyomi Kisu, Emiko Sato, Kenichi Funamoto, Yoshitaka Kimura, Sadayoshi Ito, Hiroshi Sato, Nobuyuki Takahashi
OBJECTIVE: Preeclampsia (PE) is a pregnancy-induced hypertension with proteinuria that typically develops after 20 weeks of gestation. A reduction in uterine blood flow causes placental ischemia and placental release of anti-angiogenic factors such as soluble fms-like tyrosine kinase (sFlt-1) followed by PE. Although the reduced uterine perfusion pressure (RUPP) model is widely used in rats, investigating the genetics of PE has been problematic because it has been difficult to make a useful RUPP model in mice...
September 2016: Journal of Hypertension
Sarah M Holmen, Tiki Bakhshi, Maria M Molina, Larissa F Weir
BACKGROUND: Chorioamniotic membrane separation (CMS) is a rare finding that is commonly preceded by invasive fetal procedures. The presence of CMS can also be associated with uncommon maternal or fetal conditions as well as preterm delivery, amniotic band syndrome, umbilical cord complications, and fetal and neonatal death. It is classified as a high-risk antepartum condition due to the significant fetal morbidity and mortality that may ensue. CASE REPORT: A 40-year-old gravida 5 para 1212 at 35 weeks presented for antepartum fetal testing...
October 2016: Military Medicine
Chun-Che Huang, Yu-Tung Huang, Ming-Ping Wu
OBJECTIVE: Limited information is available on health issues during pregnancy and after childbirth among nurses, especially on a nationwide level. This study thus aimed to compare antenatal and perinatal complications between nurses and nonmedical working women in Taiwan. MATERIALS AND METHODS: This nationwide population-based study was conducted using data from the Taiwan National Health Insurance Research Database. A total of 44,166 nurses and 442,107 nonmedical working women with full-time employment, aged 20-50 years, who gave birth to singletons were identified between 2007 and 2011...
October 2016: Taiwanese Journal of Obstetrics & Gynecology
Shi-Fa Zhang, Yan Zhou, Kai-Jing Zhang, Jia-Jie Luan, Shi-Mei Qi
OBJECTIVE: To investigate the effect of Nogo-66 receptor (NgR) silencing with specific small interfering RNA (siRNA) on brain injury repair in preterm rats with brain injury caused by intrauterine infection and related mechanism of action. METHODS: The pregnant Sprague-Dawley rats (with a gestational age of 15 days) were selected, and premature delivery was induced by RU486 or lipopolysaccharide (LPS). The preterm rats delivered by those treated with RU486 were selected as the control group...
October 2016: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
Qing Zhang, Haoyu Zhao, Dong Li, Liping Liu, Shuhu Du
To achieve drug targeting and on-demand releasing, surface functionalization plays a critical role in fabricating potential mesoporous silica nanoparticles (MSNs) toward tumor chemotherapy. Here, we prepared a size-controllable ligand-functionalized MSNs delivery system via coordinate bonding, which can release doxorubicin (DOX) in response to pH and prolong the circulation time of drug in vivo. After modifying the external surface of MSNs with polyethylene glycol (PEG), iminodiacetic acid (IDA) as a ligand was mainly grafted on the surface of mesopores to chelate cupric iron and DOX in sequence via coordinate bonds...
October 11, 2016: Colloids and Surfaces. B, Biointerfaces
Dandan Li, Feilong Sun, Meriem Bourajjaj, Yinan Chen, Ebel H Pieters, Jian Chen, Joep B van den Dikkenberg, Bo Lou, Marcel G M Camps, Ferry Ossendorp, Wim E Hennink, Tina Vermonden, Cornelus F van Nostrum
Cancer vaccines are at present mostly based on tumor associated protein antigens but fail to elicit strong cell-mediated immunity in their free form. For protein-based vaccines, the main challenges to overcome are the delivery of sufficient proteins into the cytosol of dendritic cells (DCs) and processing by, and presentation through, the MHC class I pathway. Recently, we developed a cationic dextran nanogel in which a model antigen (ovalbumin, OVA) is reversibly conjugated via disulfide bonds to the nanogel network to enable redox-sensitive intracellular release...
October 17, 2016: Nanoscale
Lucilla Poston, Rishi Caleyachetty, Sven Cnattingius, Camila Corvalán, Ricardo Uauy, Sharron Herring, Matthew W Gillman
Obesity in women of reproductive age is increasing in prevelance worldwide. Obesity reduces fertility and increases time taken to conceive, and obesity-related comorbidities (such as type 2 diabetes and chronic hypertension) heighten the risk of adverse outcomes for mother and child if the woman becomes pregnant. Pregnant women who are obese are more likely to have early pregnancy loss, and have increased risk of congenital fetal malformations, delivery of large for gestational age infants, shoulder dystocia, spontaneous and medically indicated premature birth, and stillbirth...
October 10, 2016: Lancet Diabetes & Endocrinology
Heléne E K Sundelin, Olof Stephansson, Kari Johansson, Jonas F Ludvigsson
INTRODUCTION: An increased risk of preterm birth in women with Joint Hypermobility Syndrome (JHS) or Ehlers-Danlos Syndrome (EDS) is suspected. MATERIAL AND METHODS: In this nationwide cohort study from 1997 through 2011, women with either JHS or EDS or both disorders were identified through the Swedish Patient Register, and linked to the Medical Birth Register. Thereby 314 singleton births to women with JHS/EDS before delivery were identified. These births were compared with 1,247,864 singleton births to women without a diagnosis of JHS/EDS...
October 14, 2016: Acta Obstetricia et Gynecologica Scandinavica
Martha A Monson, Karen J Gibbons, M Sean Esplin, Michael W Varner, Tracy A Manuck
OBJECTIVE: To characterize subsequent pregnancy outcomes among women with a history of previable, preterm prelabor rupture of membranes (PROM) and assess factors associated with recurrent preterm birth. METHODS: This was a retrospective cohort study of women cared for with a history of one or more singleton pregnancy complicated by preterm PROM at less than 24 weeks of gestation between 2002 and 2013 who were cared for in two tertiary care health systems by a single group of maternal-fetal medicine specialists...
October 6, 2016: Obstetrics and Gynecology
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