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https://www.readbyqxmd.com/read/28230213/knock-in-human-fgfr3-achondroplasia-mutation-as-a-mouse-model-for-human-skeletal-dysplasia
#1
Yi-Ching Lee, I-Wen Song, Ya-Ju Pai, Sheng-De Chen, Yuan-Tsong Chen
Achondroplasia (ACH), the most common genetic dwarfism in human, is caused by a gain-of function mutation in fibroblast growth factor receptor 3 (FGFR3). Currently, there is no effective treatment for ACH. The development of an appropriate human-relevant model is important for testing potential therapeutic interventions before human clinical trials. Here, we have generated an ACH mouse model in which the endogenous mouse Fgfr3 gene was replaced with human FGFR3(G380R) (FGFR3(ACH)) cDNA, the most common mutation in human ACH...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28226653/lomb-algorithm-versus-fast-fourier-transform-in-heart-rate-variability-analyses-of-pain-in-premature-infants
#2
Anas Delane, Jorge Bohorquez, Subhanshu Gupta, Martin Schiavenato, Anas Delane, Jorge Bohorquez, Subhanshu Gupta, Martin Schiavenato, Martin Schiavenato, Jorge Bohorquez, Subhanshu Gupta, Anas Delane
Heart rate variability analysis is a promising method for measuring pain in premature infants. The Lomb algorithm was adapted and compared with fast Fourier transform (FFT) for the purposes of PSD estimation. Both FFT and the Lomb algorithm had similar low frequency (LF) estimation error rates. However, the Lomb algorithm had a significant smaller error rate than FFT when estimating high frequency (HF). In addition, the ECG signals of two premature infants in the newborn intensive care unit were analyzed while undergoing a routine heel stick, a common painful procedure...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226048/fetal-and-neonatal-deaths-of-children-of-patients-classified-as-near-miss
#3
Daniele Marin Nardello, Alzira Maria D Avila Nery Guimarães, Ikaro Daniel de Carvalho Barreto, Ricardo Queiroz Gurgel, Eleonora Ramos de Oliveira Ribeiro, Cristiane Franca Lisboa Gois
Objective: identify the epidemiological aspects of early fetal and neonatal deaths in children of patients classified with near miss and the factors associated with this outcome. Method: a cross-sectional study of 79 women identified with near miss and their newborns. The variables were analyzed using Fisher's exact test. Risk factors were estimated based on unadjusted and adjusted odds ratios, and by means of multiple correspondence analysis, with significance for p <0...
January 2017: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/28226011/prematurity-and-associated-factors-in-divin%C3%A3-polis-minas-gerais-state-brazil-2008-2011-analysis-of-the-information-system-on-live-births
#4
Eliete Albano de Azevedo Guimarães, Carolina Santiago Vieira, Fernanda Daniela Dornelas Nunes, Gabriela da Cunha Januário, Valéria Conceição de Oliveira, Jacqueline Domingues Tibúrcio
OBJECTIVE: to estimate prematurity prevalence and associated factors in Divinópolis, Minas Gerais state, Brazil, 2008-2011. METHODS: this is a cross-sectional study with data from 9,987 records held on the Information System on Live Births; a multiple logistic regression model was used. RESULTS: prevalence of preterm births was 8.0%; the higher likelihood of premature newborns were found to cesarean section (8.9%), mothers aged 15 or less (14...
January 2017: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
https://www.readbyqxmd.com/read/28225911/clean-air-matters-an-overview-of-traffic-related-air-pollution-and-pregnancy
#5
Anne Dorothée Slovic, Carmen Simone Diniz, Helena Ribeiro
The right to a healthy pregnancy and to giving birth in a safe environment is source of comprehensive research. Decent birth facilities, respect, and no discrimination are already recognized as fundamental rights, but an accurate look at the outdoor environment is required. Air pollution is a dangerous factor to pregnant women and newborns, many of whom highly exposed to traffic-related atmospheric pollutants in urban areas. Such exposure can lead to low birth weight and long-lasting effects, such as respiratory diseases and premature death...
February 16, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28215596/sex-specific-respiratory-effects-of-acute-and-chronic-caffeine-administration-in-newborn-rats
#6
REVIEW
Hayet Kouchi, NagaPraveena Uppari, Vincent Joseph, Aida Bairam
Caffeine is widely used for the treatment of apnea of prematurity (AoP) but whether this effect varies with sex is unknown. To shed some light on this question, we present a summary of data obtained on the effects of caffeine on the respiratory chemoreflexes and apnea frequency in 1- and 12-days old male and female rats. Caffeine was either administered as a single acute injection (10mg/kg, i.p.) or for 10 consecutive days (7.5mg/kg/day between 3-12days of life by gavage, simulating its clinical use). Acute caffeine had little effects on breathing in 1-day old male and female rats...
February 16, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28213294/a-low-cost-simplified-and-scaleable-pneumotachograph-and-face-mask-for-neonatal-mouse-respiratory-measurements
#7
Jenny J Sun, Roshan Nanu, Russell S Ray
INTRODUCTION: Neonatal respiratory disorders are a leading cause of perinatal mortality due to complications resulting from premature births and prenatal exposure to drugs of abuse, but optimal treatments for these symptoms are still unclear due to a variety of confounds and risk factors. Mouse models present an opportunity to study the underlying mechanisms and efficacy of potential treatments of these conditions with controlled variables. However, measuring respiration in newborn mice is difficult and commercial components are expensive and often require modification, creating a barrier and limiting our understanding of the short and long-term effects of birth complications on respiratory function...
February 15, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28207964/impaired-nephrogenesis-in-neonatal-rats-with-oxygen-induced-retinopathy
#8
Mayu Nakagawa, Naoto Nishizaki, Amane Endo, Tomonosuke Someya, Yuta Saito, Akira Mizutani, Taichi Hara, Yayoi Murano, Koji Sakuraya, Satoshi Hara, Daisuke Umino, Daishi Hirano, Shuichiro Fujinaga, Yoshiyuki Ohtomo, Toshiaki Shimizu
OBJECTIVES: Preterm neonates are born while nephrogenesis is ongoing and are commonly exposed to factors in a hyperoxic environment that can impair renal development. Oxidative stress has also been implicated in the development of retinopathy of prematurity (ROP). The rat model of oxygen-induced retinopathy (OIR) is the most clinically relevant model of ROP because its biologic features closely resemble those of ROP in preterm infants. We investigated impaired renal development in a rat model of OIR...
February 16, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28201809/newborn-mice-lacking-the-gene-for-cyp1a1-are-more-susceptible-to-oxygen-mediated-lung-injury-and-are-rescued-by-postnatal-%C3%AE-napthoflavone-bnf-administration-implications-for-bronchopulmonary-dysplasia-bpd-in-premature-infants
#9
Paramahamsa Maturu, Yanhong Wei-Liang, Weiwu Jiang, Lihua Wang, Krithika Lingappan, Roberto Barrios, Yao Liang, Bhagavatula Moorthy, Xanthi I Couroucli
No abstract text is available yet for this article.
February 13, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28189000/breast-milk-retinol-concentration-in-mothers-of-preterm-newborns
#10
Mayara Santa Rosa Lima, Karla Danielly da Silva Ribeiro, Jeane Franco Pires, Dalila Fernandes Bezerra, Paula Emília Nunes Ribeiro Bellot, Luana Patrícia de Oliveira Weigert, Roberto Dimenstein
BACKGROUND: Preterm newborns have low vitamin A reserves at birth, which increases their risk of morbidity and mortality. In the absence of supplementation, breast milk is the only source of this nutrient for exclusively breastfed infants. AIMS: To assess retinol concentration in preterm milk and the relationship between this retinol concentration and lactation phase, degree of prematurity, and maternal serum retinol level. STUDY DESIGN: Longitudinal study...
February 7, 2017: Early Human Development
https://www.readbyqxmd.com/read/28188917/impaired-visual-short-term-memory-capacity-is-distinctively-associated-with-structural-connectivity-of-the-posterior-thalamic-radiation-and-the-splenium-of-the-corpus-callosum-in-preterm-born-adults
#11
Aurore Menegaux, Chun Meng, Julia Neitzel, Josef G Bäuml, Hermann J Müller, Peter Bartmann, Dieter Wolke, Afra M Wohlschläger, Kathrin Finke, Christian Sorg
Preterm birth is associated with an increased risk for lasting changes in both the cortico-thalamic system and attention; however, the link between cortico-thalamic and attention changes is as yet little understood. In preterm newborns, cortico-cortical and cortico-thalamic structural connectivity are distinctively altered, with increased local clustering for cortico-cortical and decreased integrity for cortico-thalamic connectivity. In preterm-born adults, among the various attention functions, visual short-term memory (vSTM) capacity is selectively impaired...
February 7, 2017: NeuroImage
https://www.readbyqxmd.com/read/28188768/frequency-of-toxocara-spp-antibodies-in-umbilical-cords-of-newborns-attended-atthe-university-hospital-in-southern-brazil-and-factors-associated-with-infection
#12
Paula Costa Santos, Paula Lima Telmo, Lis Maurente Lehmann, Carolina Lorenzi, Carolina Hirsch, Gabriela Torres Mattos, Gabriel Baracy Klafke, Maria Elisabeth Aires Berne, Carla Vitola Gonçalves, Carlos James Scaini
Toxocariasis is a neglected and geographically widespread parasitic disease. The detection of specific antibodies associated with this disease is required to confirm its clinical diagnosis and to aid in prevention. Although helminth infection during pregnancy can promote foetal immune responses with long-term effects, specific information regarding the risk of Toxocara spp. infection to the human foetus during pregnancy is lacking.Therefore,the present study aimed to investigate the frequency of antibodies against Toxocara spp...
February 7, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28181672/endometriosis-increases-the-risk-of-obstetrical-and-neonatal-complications
#13
Janne Foss Berlac, Dorthe Hartwell, Charlotte Wessel Skovlund, Jens Langhoff-Roos, Øjvind Lidegaard
INTRODUCTION: The objective was to assess obstetrical complications and neonatal outcomes in women with endometriosis as compared to women without endometriosis. MATERIAL AND METHODS: National cohort including all delivering women and their newborns in Denmark 1997-2014. Data were extracted from the Danish Health Register and the Medical Birth Register. Logistic regression analysis provided odds ratios (OR) with 95% confidence intervals (CI). Sub-analyses were made for primiparous women with a singleton pregnancy and for women with endometriosis who underwent gynecological surgery before pregnancy...
February 9, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28180126/providing-a-placental-transfusion-in-newborns-who-need-resuscitation
#14
REVIEW
Anup C Katheria, Melissa K Brown, Wade Rich, Kathy Arnell
Over the past decade, there have been several studies and reviews on the importance of providing a placental transfusion to the newborn. Allowing a placental transfusion to occur by delaying the clamping of the umbilical cord is an extremely effective method of enhancing arterial oxygen content, increasing cardiac output, and improving oxygen delivery. However, premature and term newborns who require resuscitation have impaired transitional hemodynamics and may warrant different methods to actively provide a placental transfusion while still allowing for resuscitation...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28178310/diversity-and-composition-of-vaginal-microbiota-of-pregnant-women-at-risk-for-transmitting-group-b-streptococcus-treated-with-intrapartum-penicillin
#15
Luiz Fernando Wurdig Roesch, Rita C Silveira, Andréa L Corso, Priscila Thiago Dobbler, Volker Mai, Bruna S Rojas, Álvaro M Laureano, Renato S Procianoy
BACKGROUND: Administering intravenous antibiotics during labor to women at risk for transmitting Group B Streptococcus (GBS) can prevent infections in newborns. However, the impact of intrapartum antibiotic prophylaxis on mothers' microbial community composition is largely unknown. We compared vaginal microbial composition in pregnant women experiencing preterm birth at ≤ 32 weeks gestation that received intrapartum antibiotic prophylaxis with that in controls. METHODS: Microbiota in vaginal swabs collected shortly before delivery from GBS positive women that received penicillin intravenously during labor or after premature rupture of membranes was compared to controls...
2017: PloS One
https://www.readbyqxmd.com/read/28176163/retrospective-analysis-of-55-twin-neonates-with-haemolytic-disease-of-the-newborn
#16
Hu Zhao, Bijuan Li, Ning Li, Yamei Shen, Kailiang Liu, Xiangwu Shu, Cheng Mei, Lanlan Tang
Haemolytic disease is a condition characterized by anaemia and jaundice, and the course may be more complicated in twins. We investigated the demographic and laboratory characteristics of twins with haemolytic disease of the newborn (HDN) and compared these characteristics between groups categorized according to multiple birth status (twins vs. singletons) and conception method (assisted reproductive technology (ART) vs. spontaneous conception). Fifty-five twins with HDN and 253 singletons with HDN who were born during the same period (controls) were included in the study, and we performed comparisons between them...
February 8, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28171806/bedside-rop-screening-and-telemedicine-interpretation-integrated-to-a-neonatal-transport-system-economic-aspects-and-return-on-investment-analysis
#17
Gábor Kovács, Zsolt Somogyvári, Erika Maka, László Nagyjánosi
BACKGROUND AND AIM: Peter Cerny Ambulance Service - Premature Eye Rescue Program (PCA-PERP) uses digital retinal imaging (DRI) with remote interpretation in bedside ROP screening, which has advantages over binocular indirect ophthalmoscopy (BIO) in screening of premature newborns. We aimed to demonstrate that PCA-PERP provides good value for the money and to model the cost ramifications of a similar newly launched system. METHODS: As DRI was demonstrated to have high diagnostic performance, only the costs of bedside DRI-based screening were compared to those of traditional transport and BIO-based screening (cost-minimization analysis)...
February 4, 2017: Early Human Development
https://www.readbyqxmd.com/read/28169465/correlation-between-plasma-levels-of-arginine-and-citrulline-in-preterm-and-full-term-neonates-therapeutical-implications
#18
Mike T Contreras, Maria J Gallardo, Luis R Betancourt, Pedro V Rada, Gerardo A Ceballos, Luis E Hernandez, Luis F Hernandez
BACKGROUND: Preterm neonates exhibit several deficiencies that endanger their lives. Understanding those disturbances will provide tools for the management of preterm neonates. The present work focuses on arginine and citrulline which has been flagged among the biochemical landmarks of prematurity. METHODS: We examined blood samples of preterm newborns as compared with mature neonates to determine the levels of arginine and citrulline by capillary zone electrophoresis with laser induced fluorescence detection (CZE-LIFD)...
February 7, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28166972/comparison-between-allantochorion-membrane-and-amniotic-sac-detection-by-per-rectal-palpation-for-pregnancy-diagnosis-on-pregnancy-loss-calving-rates-and-abnormalities-in-newborn-calves
#19
Juan E Romano, Pablo Pinedo, Kelsey Bryan, Roney S Ramos, Karol G Solano, Daniel Merchan, Juan Velez
The objectives of the present investigation were to evaluate the pregnancy diagnosis by detection of either the allantochorion membrane (FMS) or amniotic sac (ASP) by per rectum palpation (PRP) during late embryonic or early fetal period on pregnancy loss (PRL) at reexamination, calving rates, and abnormalities in newborn calves. A controlled randomized blind design with 800 lactating dairy pregnant cows diagnosed by transrectal ultrasonography (TRUS) between Days 35 and 57 of gestation from one dairy farm were included...
March 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28166926/-neuroprotection-for-preterm-infants-with-antenatal-magnesium-sulphate
#20
S Marret, P-Y Ancel
OBJECTIVE: To evaluate in preterm born children the neuroprotective benefits and the risks, at short- and long-term outcome, of the antenatal administration of magnesium sulphate (MgSO4) in women at imminent risk of preterm delivery. MATERIAL AND METHODS: Computer databases Medline, the Cochrane Library and the recommendations of various international scientific societies. RESULTS: Given the demonstrated benefit of antenatal MgSO4 intravenous administration on the reduction of cerebral palsy rates and the improvement of motor development in children born preterm, it is recommended for all women whose imminent delivery is expected or programmed before 32 weeks of gestation (WG) (grade A)...
December 2016: Journal de Gynécologie, Obstétrique et Biologie de la Reproduction
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