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https://www.readbyqxmd.com/read/28526169/the-second-victim-a-review
#1
REVIEW
B Coughlan, D Powell, M F Higgins
Amongst the lay and media population there is a perception that pregnancy, labour and delivery is always physiological, morbidity and mortality should be "never events" and that error is the only cause of adverse events. Those working in maternity care know that it is an imperfect art, where adverse outcomes and errors will occur. When errors do occur, there is a domino effect with three groups being involved - the patient (first victim), the staff (second victims) and the organization (third victims). If the perceived expectation of patients on all clinicians is that of perfection, then clinicians may suffer the consequences of adverse outcomes in isolation and silence...
June 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28523292/angiogenesis-versus-arteriogenesis
#2
Anna Rizzi, Vincenzo Benagiano, Domenico Ribatti
In the vascular system, angiogenesis and arteriogenesis play a unique yet equally important role in both health and disease. Angiogenesis, the formation of new blood vessels from a preexisting vascular bed, occurs naturally during wound healing, the female menstrual cycle and pregnancy. It plays a critical role in tissue growth and repair, and is a highly controlled process that is dependent on an intricate balance of both pro-angiogenic (to stimulate) and anti-angiogenic (to negatively regulate the phenomenon) factors...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28504317/adrenal-cortex-reactivity-in-dairy-cows-differs-between-lactational-stages-and-between-different-feeding-levels
#3
J J Gross, R S Zbinden, F Dohme-Meier, R M Bruckmaier
Changes in ACTH challenge test characteristics in dairy cows changing their physiological status at different lactational stages and different feeding levels were not investigated in terms of repeatability yet. In 23 multiparous Holstein cows (10 cows fed a sole fresh herbage diet without concentrate, 13 cows fed with concentrate), three ACTH challenge tests were performed: once during pregnancy shortly prior to drying off (T1), and in week 3 (T2) and 8 (T3) after parturition. Test characteristics were correlated to performance and metabolic parameters: DMI, BW, energy balance (EB), plasma concentrations of free fatty acids (NEFA) and beta-hydroxybutyrate (BHB)...
May 15, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28495606/the-synthetic-cannabinoid-win-55-212-55-212-induced-apoptosis-in-cytotrophoblasts-cells-by-a-mechanism-dependent-on-cb1-receptor
#4
Marta Almada, Lia Costa, Bruno Miguel Fonseca, Cristina Amaral, Natércia Teixeira, Georgina Correia-da-Silva
The endocannabinoid system has evolved as a key regulator in several pathological and physiological processes, including placentation, decidualization and implantation. In addition, it is known that Cannabis and cannabinoids negatively affect female reproduction. Although, the biological action of synthetic cannabinoids, such as WIN-55,212, in human fertility and pregnancy outcome remain to be unveiled. A tight balance between proliferation, differentiation and apoptosis of trophoblast cells is required for placental development and pregnancy outcome...
May 8, 2017: Toxicology
https://www.readbyqxmd.com/read/28491062/a-kinetic-study-of-cd83-reveals-an-upregulation-and-higher-production-of-scd83-in-lymphocytes-from-pregnant-mice
#5
Katrin Regina Helene Packhäuser, Gleyder Roman-Sosa, Jens Ehrhardt, Diana Krüger, Marek Zygmunt, Damián Oscar Muzzio
For the normal development of pregnancy, a balance between immune tolerance and defense is crucial. However, the mechanisms mediating such a balance are not fully understood. CD83 is a transmembrane protein whose expression has been linked to anti-inflammatory functions of T and B cells. The soluble form of CD83, released by cleavage of the membrane-bound protein, has strong anti-inflammatory properties and was successfully tested in different mouse models. It is assumed that this molecule contributes to the establishment of immune tolerance...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28490512/preconceptional-and-gestational-weight-trajectories-and-risk-of-delivering-a-small-for-gestational-age-baby-in-rural-gambia
#6
William Johnson, Seham Aa Elmrayed, Fatou Sosseh, Andrew M Prentice, Sophie E Moore
Background: Maternal nutritional status is a key determinant of small for gestational age (SGA), but some knowledge gaps remain, particularly regarding the role of the energy balance entering pregnancy.Objective: We investigated how preconceptional and gestational weight trajectories (summarized by individual-level traits) are associated with SGA risk in rural Gambia.Design: The sample comprised 670 women in a trial with serial weight data (7310 observations) that were available before and during pregnancy...
May 10, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28487952/expression-of-reproductive-hormone-receptors-and-contraction%C3%A2-associated-genes-in-porcine-uterus-during-the-estrous-cycle
#7
Sung-Min An, Sun Suk Kim, Jun Kim, Mee-Na Park, Jae-Eon Lee, Seong Keun Cho, Kyu-Sup Lee, Beum-Soo An
Contraction of uterus tissue frequently occurs throughout the estrous cycle and is regulated by several endogenous factors, including estradiol, progesterone, luteinizing hormone, follicle‑stimulating hormone, oxytocin (OXT) and contraction‑associated proteins (CAPs). Contraction activity of uterus tissue according to the estrous cycle is important, due to the fact that it is directly associated with balanced implantation and stable pregnancy. However, few studies have examined the mechanism of uterus contraction activity in a porcine model...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28487272/analysis-of-genetic-characteristics-and-reproductive-risks-of-balanced-complex-chromosome-rearrangement-carriers-in-china
#8
Liao Yaping, Wang Chunjing, Liang Meng, Hu Xiaomei, Wu Qi
To examine the type, characteristics and meiotic behavior of balanced complex chromosome rearrangements (CCRs) and their relationship with reproductive abnormalities in Chinese people, karyotype analyses were performed in 1063 couples with reproductive abnormalities using G-banding technology. Additional data were retrieved from a Chinese database and analyzed statistically with the karyotype and clinic data of CCRs. Two CCR carriers were found among the 1063 couples, and in all a total of 124 CCR carriers with the complete information were identified in the karyotype analysis and the database search...
May 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28474560/redox-regulation-of-fertility-in-aging-male-and-the-role-of-antioxidants-a-savior-or-stressor
#9
Kristian Leisegang, Ralf Henkel, Ashok Agarwal
Oxidative stress (OS), an imbalance between reactive oxygen species (ROS) and antioxidant scavengers, is considered an important underlying mechanism associated with ageing, age-related chronic diseases and reproductive decline in males. However, OS is an important regulator of numerous molecular pathways essential for homeostasis within cells, tissues and systems. A fine balance between factors promoting OS and those that scavenge ROS is critically important. In the male reproductive tract and ejaculate, ROS are critical molecular players in essential reproductive processes, including spermatogenesis, epididymal transport, spermatozoa maturation and post-ejaculation processes such as motility, capacitation and the acrosome reaction...
October 19, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28473192/characterization-of-a-cerebral-palsy-like-model-in-rats-analysis-of-gait-pattern-and-of-brain-and-spinal-cord-motor-areas
#10
Adriana Souza Dos Santos, Wellington de Almeida, Bruno Popik, Bruno Marques Sbardelotto, Márcia Miranda Torrejais, Marcelo Alves de Souza, Lígia Aline Centenaro
In an attempt to propose an animal model that reproduces in rats the phenotype of cerebral palsy, this study evaluated the effects of maternal exposure to bacterial endotoxin associated with perinatal asphyxia and sensorimotor restriction on gait pattern, brain and spinal cord morphology. Two experimental groups were used: Control Group (CTG) - offspring of rats injected with saline during pregnancy and Cerebral Palsy Group (CPG) - offspring of rats injected with lipopolysaccharide during pregnancy, submitted to perinatal asphyxia and sensorimotor restriction for 30days...
May 1, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28472982/comparative-safety-of-anti-epileptic-drugs-during-pregnancy-a-systematic-review-and-network-meta-analysis-of-congenital-malformations-and-prenatal-outcomes
#11
Areti Angeliki Veroniki, Elise Cogo, Patricia Rios, Sharon E Straus, Yaron Finkelstein, Ryan Kealey, Emily Reynen, Charlene Soobiah, Kednapa Thavorn, Brian Hutton, Brenda R Hemmelgarn, Fatemeh Yazdi, Jennifer D'Souza, Heather MacDonald, Andrea C Tricco
BACKGROUND: Pregnant women with epilepsy frequently experience seizures related to pregnancy complications and are often prescribed anti-epileptic drugs (AEDs) to manage their symptoms. However, less is known about the comparative safety of AED exposure in utero. We aimed to compare the risk of congenital malformations (CMs) and prenatal outcomes of AEDs in infants/children who were exposed to AEDs in utero through a systematic review and Bayesian random-effects network meta-analysis...
May 5, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28472741/working-fulltime-throughout-pregnancy-the-norwegian-women-s-perspectives-a-qualitative-approach
#12
Siv-Tonje Selboe, Ann-Karin Skogås
OBJECTIVE: the purpose of this study was to gain a deeper understanding of aspects that influence healthy women's ability to work fulltime throughout the pregnancy, considering women's experiences and individual perspectives, as well as understanding health resources available to them. DESIGN/SETTING: a qualitative approach was selected for the data collection, and the data presented is derived from in-depth interviews. Ten pregnant Norwegian women with uncomplicated pregnancies, aged 24-40, working fulltime throughout their pregnancies with no sick leave, were interviewed during pregnancy week 37-39...
April 27, 2017: Midwifery
https://www.readbyqxmd.com/read/28472389/carbon-monoxide-releasing-molecules-blunt-placental-ischemia-induced-hypertension
#13
Eric M George, Kathy Cockrell, Marietta Arany, David E Stec, John M Rimoldi, Rama S V Gadepalli, Joey P Granger
BACKGROUND: Preeclampsia is a pregnancy complication which manifests as new-onset hypertension, proteinuria, and a spectrum of other symptoms. While the underlying causes are still a subject of much debate, it is commonly believed that placental ischemia is a central cause. The ischemic placenta secretes factors which are believed to be responsible for the maternal syndrome; most notably the anti-angiogenic protein soluble fms-like tyrosine kinase 1 (sFlt-1). We have reported that induction of the carbon monoxide (CO) producing protein heme oxygenase-1 restored angiogenic imbalance and reduced blood pressure in a rat model of placental ischemia, and that CO blocks hypoxia-induced sFlt-1 production from placental tissue in vitro...
May 2, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28462673/an-alternative-method-for-measuring-oxidative-stress-in-intrahepatic-cholestasis-of-pregnancy-thiol-disulphide-homeostasis
#14
Cem Yasar Sanhal, Korkut Daglar, Ozgur Kara, Zehra Vural Yılmaz, Gulenay Gencosmanoglu Turkmen, Ozcan Erel, Dilek Uygur, Aykan Yucel
PURPOSE: The aim of our study was to evaluate the oxidative stress (OS) in pregnant women with intrahepatic cholestasis of pregnancy (ICP) by evaluating thiol/disulphide homeostasis using an alternative technique. METHODS: A total of 57 pregnant women with ICP were compared with 50 gestational age and body mass index matched controls. A recently defined method was used for the measurement of plasma native-total thiol and disulphide levels. The independent two-sample t test, Mann-Whitney-U test, Chi-square test, binary logistic regression with backward elimination and receiver operating characteristic (ROC) curve was performed for statistical analyses...
May 2, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28455378/ehmt2-g9a-controls-placental-vascular-maturation-by-activating-the-notch-pathway
#15
Lijun Chi, Abdalla Ahmed, Anna R Roy, Sandra Vuong, Lindsay S Cahill, Laura Caporiccio, John G Sled, Isabella Caniggia, Michael D Wilson, Paul Delgado-Olguin
Defective fetoplacental vascular maturation causes intrauterine growth restriction (IUGR). A transcriptional switch initiates placental maturation where blood vessels elongate. However, cellular mechanisms and regulatory pathways involved are unknown. We show that the histone methyltransferase Ehmt2, also known as G9a, activates the Notch pathway to promote placental vascular maturation. Placental vasculature from embryos with G9a-deficient endothelial progenitor cells failed to expand due to decreased endothelial cell proliferation and increased trophoblast proliferation...
April 28, 2017: Development
https://www.readbyqxmd.com/read/28446631/combined-vitamin-b-12-and-balanced-protein-energy-supplementation-affect-homocysteine-remethylation-in-the-methionine-cycle-in-pregnant-south-indian-women-of-low-vitamin-b-12-status
#16
Sarita Devi, Arpita Mukhopadhyay, Pratibha Dwarkanath, Tinku Thomas, Julian Crasta, Annamma Thomas, C N Sheela, Jean W Hsu, Grace J Tang, Farook Jahoor, Anura V Kurpad
Background: Low-quality dietary protein intake and vitamin B-12 deficiency could interact to decrease methionine transmethylation and remethylation rates during pregnancy and may affect epigenetic modifications of the fetal genome.Objective: The objective of this randomized, partially open-labeled intervention trial was to examine the effect of supplemental high-quality protein and vitamin B-12 on third-trimester methionine kinetics in pregnant Indian women with a low vitamin B-12 status.Methods: Pregnant women with low serum vitamin B-12 concentrations (<200 pmol/L) were randomly assigned to 1 of 3 groups: the first group received balanced protein-energy supplementation of 500 mL milk/d plus a 10-μg vitamin B-12 tablet/d (M+B-12 group; n = 30), the second group received milk (500 mL/d) plus a placebo tablet (M+P group; n = 30), and the third group received a placebo tablet alone (P group; n = 33)...
April 26, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28440587/risk-benefit-perception-of-pregnancy-among-breast-cancer-survivors
#17
P-L Hsieh, S-M Huang, L-Y Chien, C-F Lee, Y Hsiung, C-J Tai
Helping breast cancer patients who desire a pregnancy after cancer treatment is a vital issue. Little is known about the complex context of the decision to become pregnant after breast cancer treatment. The purpose of this study was to understand the risk-benefit perception of choosing conception or contraception after treatment in Taiwan. We applied grounded theory to guide this exploratory qualitative study. Data were collected through in-depth interviews with 16 breast cancer patients. Pregnancy was addressed in the context of cancer as a potentially life-threatening diagnosis and its treatment...
April 25, 2017: European Journal of Cancer Care
https://www.readbyqxmd.com/read/28439050/-calcium-and-bone-metabolism-across-women-s-life-stages-changes-of-biochemical-markers-of-bone-turnover-in-life-cycle-of-women
#18
Osamu Chaki
Development of bone metabolism markers began about 35 years ago. Current by the osteoporosis and bone metabolism diseases diagnosis and treatment efficacy. In childhood and adolescence, bone formation and resorption were increased, but formation rate was exceeded resorption rate. To keep strength of bone, bone formation and resorption are balanced(remodeling)in the period of maturity, Bone mineral density greatly decreases and biochemical markers of bone turnover markedly increase in postmenopausal women, indicating accelerated bone remodeling because of estrogen withdrawal...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28434752/effects-of-intrauterine-infusion-of-escherichia-coli-lipopolysaccharide-on-uterine-health-resolution-of-purulent-vaginal-discharge-and-reproductive-performance-of-lactating-dairy-cows
#19
João G N Moraes, Paula R B Silva, Luís G D Mendonça, Alexandre A Scanavez, Joseane C C Silva, Ricardo C Chebel
The objectives of the current experiment were to evaluate the effects of intrauterine infusion of Escherichia coli lipopolysaccharide (LPS) in cows diagnosed with purulent vaginal discharge (PVD) on intrauterine cell population, resolution of PVD, uterine health, and reproductive performance. Jersey cows (n = 3,084) were examined using the Metricheck device to diagnose PVD at 35 ± 6 d postpartum. Purulent vaginal discharge was defined as the presence of purulent (≥50% pus) discharge detectable in the vagina...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28433370/assessing-the-true-incidence-of-mosaicism-in-preimplantation-embryos
#20
REVIEW
Maria Vera-Rodriguez, Carmen Rubio
Modern technologies applied to the field of preimplantation genetic diagnosis for aneuploidy screening (PGD-A) have improved the ability to identify the presence of mosaicism. Consequently, new questions can now be addressed regarding the potential impact of embryo mosaicism on diagnosis accuracy and the feasibility of considering mosaic embryos for transfer. The frequency of chromosomal mosaicism in products of conception (POCs) of early miscarriages has been reported to be low. Mosaic embryos with an aneuploid inner cell mass are typically lost during the first trimester owing to spontaneous miscarriages...
April 19, 2017: Fertility and Sterility
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