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https://www.readbyqxmd.com/read/28633864/perinatal-group-b-streptococcal-infections-virulence-factors-immunity-and-prevention-strategies
#1
REVIEW
Jay Vornhagen, Kristina M Adams Waldorf, Lakshmi Rajagopal
Group B streptococcus (GBS) or Streptococcus agalactiae is a β-hemolytic, Gram-positive bacterium that is a leading cause of neonatal infections. GBS commonly colonizes the lower gastrointestinal and genital tracts and, during pregnancy, neonates are at risk of infection. Although intrapartum antibiotic prophylaxis during labor and delivery has decreased the incidence of early-onset neonatal infection, these measures do not prevent ascending infection that can occur earlier in pregnancy leading to preterm births, stillbirths, or late-onset neonatal infections...
June 17, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28633616/sclerosing-stromal-tumor-mimicking-a-pregnancy-luteoma-case-report-of-a-diagnostically-challenging-entity-further-complicated-by-the-presence-of-metastatic-signet-ring-cell-carcinoma-from-the-stomach
#2
Meral Uner, Alp Usubutun
Sclerosing stromal tumors of the ovary are very rare. We report the case of a 29-year-old pregnant woman who presented with a history of preterm labor and gestational hypertension. A huge mass measuring 30 cm in greatest dimension was recognized on the right ovary during cesarean section. Signet ring cell infiltration was seen during intraoperative frozen section consultation. She underwent a right salpingo-oophorectomy, and the permanent diagnosis was sclerosing stromal tumor infiltrated by signet ring cells...
June 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28631553/administration-of-progesterone-throughout-pregnancy-increases-maternal-steroids-without-adverse-effect-on-mature-oligodendrocyte-immunostaining-in-the-guinea-pig
#3
Julia C Shaw, Hannah K Palliser, Kerrin Palazzi, Jonathan J Hirst
Progesterone is administered to pregnant women at risk of premature labor, despite systematic reviews showing conflicting outcomes regarding its use, highlighting doubt over the effectiveness of the therapy. Progesterone can be rapidly metabolized into a number of steroids, but to date, there has been a lack of investigation into the fetal steroid profiles following administration and whether this impacts fetal neurodevelopment. The objective of this study was to determine the effect of progesterone treatment on allopregnanolone and cortisol levels in the fetus and on a marker of myelination in the fetal brain...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28629273/the-association-between-maternal-race-and-adverse-outcomes-in-twin-pregnancies-with-similar-healthcare-access
#4
Marti D Soffer, Mariam Naqvi, Stephanie Melka, Aren Gottlieb, Julie Romero, Nathan S Fox
OBJECTIVE: To compare twin pregnancy outcomes between white and nonwhite women with similar access to healthcare. METHODS: Retrospective cohort study of all twin pregnancies delivered by a single maternal-fetal medicine practice from 2005-2016. All patients had private health insurance and equal access to physician care. Outcomes were compared between white and nonwhite women using logistic regression to adjust for differences at baseline. RESULTS: Of the 858 women included, 730 (85...
June 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28629237/improved-pregnancy-outcome-following-earlier-splenectomy-in-women-with-immune-thrombocytopenia-a-5-year-observational-study
#5
Mohamed Rezk, Alaa Masood, Ragab Dawood, Mahmoud Emara, Hanan El-Sayed
OBJECTIVE: to assess prospectively the maternal and fetal outcome in women with immune thrombocytopenic purpura (ITP) who undergone earlier splenectomy compared to women on medical therapy. METHODS: a 5-year observational study included pregnant women in the first trimester previously diagnosed with primary ITP with 74 patients underwent splenectomy before pregnancy and 86 patients on medical therapy. Patients were followed throughout pregnancy and labor to record their obstetric outcome...
June 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28626423/ubiquitin-proteasome-collagen-cup-pathway-in-preterm-premature-rupture-of-fetal-membranes
#6
Xinliang Zhao, Xiaoyan Dong, Xiucui Luo, Jing Pan, Weina Ju, Meijiao Zhang, Peirong Wang, Mei Zhong, Yanhong Yu, W Ted Brown, Nanbert Zhong
Spontaneous preterm birth (sPTB) occurs before 37 gestational weeks, with preterm premature rupture of the membranes (PPROM) and spontaneous preterm labor (sPTL) as the predominant adverse outcomes. Previously, we identified altered expression of long non-coding RNAs (lncRNAs) and message RNAs (mRNAs) related to the ubiquitin proteasome system (UPS) in human placentas following pregnancy loss and PTB. We therefore hypothesized that similar mechanisms might underlie PPROM. In the current study, nine pairs of ubiquitin-proteasome-collagen (CUP) pathway-related mRNAs and associated lncRNAs were found to be differentially expressed in PPROM and sPTL...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28625302/pharmacogenetics-in-obstetric-anesthesia
#7
REVIEW
Ruth Landau, Richard Smiley
The 21st century has been billed as the era of "precision/personalized medicine." Genetic investigation of clinical syndromes may guide therapy as well as reveal previously unknown biological or pharmacological pathways that may result in novel drug therapies. Several clinical issues in obstetrics and obstetric anesthesiology have been targets for genetic investigations. These include evaluation of the genetic effects on preterm labor and the progression of labor, spinal anesthesia-induced hypotension and the response to medications used to treat hypotension, and the effect of gene variants on pain and analgesic responses...
March 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/28622534/increased-expression-of-toll-like-receptors-2-and-9-is-associated-with-reduced-dna-methylation-in-spontaneous-preterm-labor
#8
Scott W Walsh, Anuja A Chumble, Sonya L Washington, Kellie J Archer, Sinem E Sahingur, Jerome F Strauss
The cause of spontaneous preterm labor (sPTL) is not known, but it could be due to epigenetic alterations that increase the sensitivity of decidual tissue to inflammatory stimuli. We collected decidual tissue from women at term not in labor (TNL), women at term in labor (TL), and women with sPTL. Illumina Infinium HumanMethylation450 BeadChip analysis revealed significantly reduced DNA methylation for TLR-2 and TLR-9 in sPTL as compared to TL. Immunohistochemical staining documented significantly increased expression of TLR-2 and TLR-9 in decidual tissue of women with sPTL as compared to TL or TNL...
June 3, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28620153/premature-labor-and-neonatal-septicemia-caused-by-capnocytophaga-ochracea
#9
Abdullah A Alhifany, Thamer A Almangour, Deanne E Tabb, David H Levine
BACKGROUND Capnocytophaga ochracea is a gram-negative anaerobic organism commonly found in human oral flora. It is characteristically sensitive to beta-lactams and resistant to aminoglycosides. CASE REPORT A 23-year-old woman presented with lower abdominal pain and was admitted for premature labor at 24-weeks of gestation. At presentation, the cervix was closed and the membrane was intact; however, contractions continued, the membrane subsequently ruptured before receiving any steroids or magnesium, and the mother gave birth to a 540-gram female baby...
June 16, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28613021/combined-value-of-placental-alpha-microglobulin-1-detection-and-cervical-length-via-transvaginal-ultrasound-in-the-diagnosis-of-preterm-labor-in-symptomatic-patients
#10
Vyacheslav Bolotskikh, Vera Borisova
AIM: We aimed to evaluate the combined value of placental alpha microglobulin-1 (PAMG-1) and cervical length (CL) via transvaginal ultrasound for assessing risk of imminent spontaneous preterm delivery in patients presenting with threatened preterm labor (PTL). METHODS: Clinical exam, PAMG-1 test, cardiotocography, and CL measurement via transvaginal ultrasound were performed on all patients meeting inclusion criteria. Ninety-nine patients at 22(+0) -36(+6) gestational weeks with the symptoms of PTL were included...
June 14, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28611933/monochorionic-triamniotic-triplet-pregnancy-complicated-by-twin-reversed-arterial-perfusion-sequence-case-report-and-literature-review
#11
Pingshan Pan, Guoyang Luo, Lu Tang, Jeanne D Rolle, Yuqin Qin, Quan Zeng, Jiangting Wei, Yuanfang Chen, Hongwei Wei
Background  Monochorionic-triamniotic pregnancies are rare and fraught with complications. Case  A case of monochorionic-triamniotic triplet pregnancy complicated by twin reversed arterial perfusion (TRAP) sequence is presented. The patient declined termination or selective fetal reduction. Triplet C was acardiac. At 24 weeks, triplet B developed polyhydramnios. At 30 weeks, polyhydramnios was seen in all three amniotic sacs, but without signs of fetal hydrops and with normal Doppler velocimetry measurements in the umbilical artery, middle cerebral artery, and ductus arteriosus of triplets A and B...
April 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28608856/antenatal-dexamethasone-exposure-differentially-affects-distinct-cortical-neural-progenitor-cells-and-triggers-long-term-changes-in-murine-cerebral-architecture-and-behavior
#12
M A Tsiarli, A Rudine, N Kendall, M O Pratt, R Krall, E Thiels, D B DeFranco, A P Monaghan
Antenatal administration of synthetic glucocorticoids (sGC) is the standard of care for women at risk for preterm labor before 34 gestational weeks. Despite their widespread use, the type of sGC used and their dose or the dosing regimens are not standardized in the United States of America or worldwide. Several studies have identified neural deficits and the increased risk for cognitive and psychiatric disease later in life for children administered sGC prenatally. However, the precise molecular and cellular targets of GC action in the developing brain remain largely undefined...
June 13, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28601683/prenatal-intrapartum-and-postnatal-factors-are-associated-with-pediatric-eosinophilic-esophagitis
#13
Elizabeth T Jensen, Jonathan T Kuhl, Lisa J Martin, Marc E Rothenberg, Evan S Dellon
BACKGROUND: Multiple lines of evidence point to the potential importance of early-life environmental factors in the rapid rise in incidence of eosinophilic esophagitis (EoE), but potential exposures have not been extensively studied. OBJECTIVE: To assess the association between prenatal, intrapartum, and postnatal factors and the development of pediatric EoE using a case-control study. METHODS: Cases of EoE were recruited from an existing registry at Cincinnati Children's Hospital Medical Center (CCHMC)...
June 7, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28595292/neonatal-outcomes-associated-with-placental-abruption
#14
Katheryne L Downes, Edmond D Shenassa, Katherine L Grantz
Placental abruption, early separation of the placenta, is associated with preterm birth and perinatal mortality, but associations with other neonatal morbidities remains under-studied. We examined the association between abruption and newborn outcomes. We analyzed n = 223,341 singleton deliveries from the Consortium on Safe Labor Study, a retrospective, multi-site, observational study (2002-2008) of electronic medical records in the U.S. Adjusted relative risks (RR), incident ratio ratios and 99% confidence intervals (CI) were estimated...
June 8, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28594783/progestogens-for-maintenance-tocolysis-in-women-with-a-short-cervix-a-randomized-controlled-trial
#15
Fabio Facchinetti, Patrizia Vergani, Mariarosaria Di Tommaso, Luca Marozio, Barbara Acaia, Roberto Vicini, Lucrezia Pignatti, Anna Locatelli, Marina Spitaleri, Chiara Benedetto, Barbara Zaina, Roberto DʼAmico
OBJECTIVE: To assess the efficacy of progestogens for maintenance tocolysis in women undelivered after their first preterm labor episode. METHODS: Women with singleton pregnancies between 22 0/7 and 31 6/7 weeks of gestation with arrested preterm labor and a cervical length 25 mm or less at hospital discharge were eligible. Patients with a previous preterm birth were excluded. In a randomized controlled trial conducted in five university hospitals, women were randomized to receive vaginal progesterone (200 mg per day) or intramuscular 17α-hydroxyprogesterone caproate (341 mg per week) or to an observation groups (control group)...
June 6, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28593917/vitamin-d-deficiency-in-pregnancy-at-term-risk-factors-and-pregnancy-outcomes
#16
Chui Ling Lee, Beng Kwang Ng, Loo Ling Wu, Fook Choe Cheah, Hanita Othman, Nor Azlin Mohamed Ismail
Background Vitamin D deficiency during pregnancy is a worldwide epidemic. The aim of this study was to determine the prevalence of vitamin D deficiency, its predictive factors and the association with pregnancy outcomes. Materials and methods This was a prospective observational study in a tertiary teaching hospital over 2-years' duration from August 2013 to August 2015. A total of 680 women who completed 37 weeks of pregnancy were recruited. Results Five hundred and seventy-five patients were enrolled in the final analysis for pregnancy outcomes (response rate of 84...
May 26, 2017: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/28591495/-risk-factors-associated-with-preterm-birth-in-a-second-level-hospital
#17
Beatriz Escobar-Padilla, Limberg Darinel Gordillo-Lara, Horacio Martínez-Puon
BACKGROUND: Preterm birth is one of the biggest problems in obstetrics and gynecology, given that it has an incidence of 10-11%. The objective was to identify the risk factors associated with a preterm birth. METHODS: A retrospective, observational, transversal and analytic case-control study was made. All premature birth incidences were determined as study objects and controls were integrated with term deliveries. A sample size of 344 patients with a control per case was calculated...
July 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28583707/histologic-chorioamnionitis-and-bronchopulmonary-dysplasia-in-preterm-infants-the-epidemiologic-study-on-low-gestational-ages-2-cohort
#18
Héloïse Torchin, Elsa Lorthe, François Goffinet, Gilles Kayem, Damien Subtil, Patrick Truffert, Louise Devisme, Valérie Benhammou, Pierre-Henri Jarreau, Pierre-Yves Ancel
OBJECTIVE: To investigate the association between histologic chorioamnionitis (HCA) and bronchopulmonary dysplasia (BPD) in very preterm infants, both in a general population and for those born after spontaneous preterm labor and after preterm premature rupture of membranes (pPROM). STUDY DESIGN: This study included 2513 live born singletons delivered at 24-31 weeks of gestation from a national prospective population-based cohort of preterm births; 1731 placenta reports were available...
June 2, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28578174/maternal-marijuana-use-adverse-pregnancy-outcomes-and-neonatal-morbidity
#19
Torri D Metz, Amanda A Allshouse, Carol J Rowland Hogue, Robert L Goldenberg, Donald J Dudley, Michael W Varner, Deborah L Conway, George R Saade, Robert M Silver
BACKGROUND: The Eunice Kennedy Shriver National Institute of Child Health and Human Development Stillbirth Collaborative Research Network previously demonstrated an association between stillbirth and maternal marijuana use as defined by the presence of tetrahydrocannabinol in the umbilical cord homogenate. However, the relationship between marijuana use and perinatal complications in live births is uncertain. OBJECTIVE: Our aim was to examine if maternal marijuana use is associated with increased odds of adverse pregnancy outcomes and neonatal morbidity among live-born controls in the Stillbirth Collaborative Research Network cohort...
May 31, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28570658/estimation-of-preterm-labor-immediacy-by-nonlinear-methods
#20
Iker Malaina, Luis Martinez, Roberto Matorras, Carlos Bringas, Larraitz Aranburu, Luis Fernández-Llebrez, Leire Gonzalez, Itziar Arana, Martín-Blas Pérez, Ildefonso Martínez de la Fuente
Preterm delivery affects about one tenth of human births and is associated with an increased perinatal morbimortality as well as with remarkable costs. Even if there are a number of predictors and markers of preterm delivery, none of them has a high accuracy. In order to find quantitative indicators of the immediacy of labor, 142 cardiotocographies (CTG) recorded from women consulting because of suspected threatened premature delivery with gestational ages comprehended between 24 and 35 weeks were collected and analyzed...
2017: PloS One
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