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https://www.readbyqxmd.com/read/28820870/controversies-in-the-identification-and-management-of-acute-pulmonary-hypertension-in-preterm-neonates
#1
REVIEW
Regan E Giesinger, Kiran More, Jodie Odame, Amish Jain, Robert P Jankov, Patrick J McNamara
It is increasingly recognized that the abnormal physiologic consequences of pulmonary hypertension (PH) may contribute to poor cardiopulmonary health in premature babies. Conflicting literature has led to clinical uncertainty, pathological misinterpretation and variability in treatment approaches among practitioners. There are several disorders with overlapping and interrelated presentations and other disorders with a similar clinical phenotype but diverse pathophysiological contributors. In this review, we provide a diagnostic approach for acute HRF in the preterm neonate, outline the pathophysiological conditions that may present as acute PH and discuss the implications of high pulmonary vascular resistance (PVR) on the cardiovascular system...
August 18, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28820654/locus-specific-dna-methylation-in-the-placenta-is-associated-with-levels-of-pro-inflammatory-proteins-in-cord-blood-and-they-are-both-independently-affected-by-maternal-smoking-during-pregnancy
#2
Sanne D van Otterdijk, Alexandra M Binder, Karin B Michels
We investigated the impact of maternal smoking during pregnancy on placental DNA methylation and how this may mediate the association between maternal smoking and pro-inflammatory proteins in cord blood. The study population consisted of 27 individuals exposed to maternal smoking throughout pregnancy, 32 individuals exposed during a proportion of the pregnancy, and 61 unexposed individuals. Methylation of 11 regions within 6 genes in placenta tissue was assessed by pyrosequencing. Levels of 7 pro-inflammatory proteins in cord blood were assessed by electrochemiluminescence...
August 18, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28820429/propofol-s-effects-on-the-fetal-brain-for-non-obstetric-surgery
#3
REVIEW
Ajay Malhotra, Emily Yosh, Ming Xiong
While the use of Propofol has been increasing in usage for general surgical procedures since its release to market, there has been little work done on its potential link to neurotoxicity in humans. Only recently, following the release of a warning label from the United States Food and Drug Administration (USFDA) regarding a potential link to "neurotoxicity" in the neonate, did the surgical and anesthesiology communities become more aware of its potential for harm. Given the widespread use of this drug in clinical practice, the warning label naturally raised controversy regarding intrapartum Propofol usage...
August 18, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28820417/-neurosonographical-characteristics-of-dysmature-infants-depending-on-conducted-neuroprotection
#4
A Gasparyan
The actual problem of modern obstetrics is a preterm delivery (PD), its tactics as the matter of specialists' discussions. One of the main components of "preterm delivery considerate management" is the conduction of fetus neuroprotection. Currently, the only wide spread preparation for fetus neuroprotection is magnesium sulphate, the advisability of that is criticized by several authors. The 62 neonatals of recurrent delivering women with monocarpous pregnancy, who delivered with 27-28- week gestation, were examined...
July 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28820404/responding-professionally-to-requests-for-cesarean-delivery
#5
F Chervenak, L McCullough
Patients' requests for non-indicated cesarean delivery challenge the professionalism of obstetricians. This is because physicians should not provide clinical management in the absence of an evidence-based indication for it. The ethics of responding professionally to requests for non-indicated cesarean delivery would appear to be simple: just say "No." This paper presents an ethically and clinically more nuanced approach, on the basis of the professional responsibility model of obstetric ethics, emphasizinga preventive ethics approach...
July 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28819941/maternal-and-neonatal-outcomes-of-pregnancy-at-39-weeks-and-beyond-with-mild-gestational-diabetes-mellitus
#6
Hanqing Chen, Suhua Zou, Jianbo Yang, Songqing Deng, Jian Cai, Zilian Wang
OBJECTIVES: The purpose of this study was to retrospectively analyze maternal and neonatal outcomes in pregnant women with mild gestational diabetes mellitus at 39 weeks compared to 40 weeks. MATERIAL AND METHODS: Clinical data of 372 cases of mild gestational diabetes mellitus form First Affiliated Hospital of Sun Yat-sen University were analyzed retrospectively. There were 108 mild GDM patients that delivered at 40-40+6 weeks in our research group, and 264 patients that delivered in 39-39+6 weeks in the control group...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28819748/lipoxin-a4-attenuates-bronchopulmonary-dysplasia-via-upregulation-of-let-7c-and-downregulation-of-tgf-%C3%AE-1-signaling-pathway
#7
Xiao-Qing Chen, Sheng-Hua Wu, Yan-Yan Luo, Bing-Jie Li, Shu-Jun Li, Hong-Yan Lu, Rui Jin, Zhong-Yi Sun
Transforming growth factor-β (TGF-β) superfamily members are key regulators for lung development and progress of bronchopulmonary dysplasia (BPD). The mechanisms by which lipoxin A4 (LXA4) attenuates development of BPD have not been clarified. Neonatal murine BPD models were inducted by hyperoxia treatment. Neonatal mice were exposed to room air or 85% O2 hyperoxia with or without treatment with 5S,6R-methyl-LXA4 or anti-TGF-β antibodies. Mouse lung epithelial cells (MLE-12 cells) and mouse embryonic fibroblasts (NIH/3T3 cells) were cultured in room air or 85% O2 followed by treatment of LXA4, anti-TGF-β antibodies, and let-7c mimic/anti-microRNA transfections...
August 17, 2017: Inflammation
https://www.readbyqxmd.com/read/28819628/abnormal-biomarkers-of-homocysteine-metabolism-in-neonates-with-conotruncal-heart-defects
#8
Piotr Surmiak, Małgorzata Baumert, Magdalena Paprotny
OBJECTIVES: The etiology of conotruncal heart defects (CHD) remains unknown; however relation between homocysteine, folate levels, and congenital heart disease was found. With this perspective in mind, the aim of the study was to investigate biomarkers of homosyteine metabolism pathway in mothers and their neonates with CHD. MATERIAL AND METHODS: Forty-three pairs of mothers and their neonates with CHD and forty pairs of mothers and neonates with nonconotruncal heart defects (non-CHD) were enrolled...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28819234/transcriptome-of-neonatal-preb%C3%A3-tzinger-complex-neurones-in-dbx1-reporter-mice
#9
John A Hayes, Andrew Kottick, Maria Cristina D Picardo, Andrew D Halleran, Ronald D Smith, Gregory D Smith, Margaret S Saha, Christopher A Del Negro
We sequenced the transcriptome of brainstem interneurons in the specialized respiratory rhythmogenic site dubbed preBötzinger Complex (preBötC) from newborn mice. To distinguish molecular characteristics of the core oscillator we compared preBötC neurons derived from Dbx1-expressing progenitors that are respiratory rhythmogenic to neighbouring non-Dbx1-derived neurons, which support other respiratory and non-respiratory functions. Results in three categories are particularly salient. First, Dbx1 preBötC neurons express κ-opioid receptors in addition to μ-opioid receptors that heretofore have been associated with opiate respiratory depression, which may have clinical applications...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819195/human-cytomegalovirus-escapes-immune-recognition-by-nk-cells-through-the-downregulation-of-b7-h6-by-the-viral-genes-us18-and-us20
#10
Yoav Charpak-Amikam, Tobias Kubsch, Einat Seidel, Esther Oiknine-Djian, Noemi Cavaletto, Rachel Yamin, Dominik Schmiedel, Dana Wolf, Giorgio Gribaudo, Martin Messerle, Luka Cicin-Sain, Ofer Mandelboim
Human cytomegalovirus (HCMV) is a major human pathogen, causing serious diseases in immunocompromised populations and congenially infected neonates. One of the main immune cells acting against the virus are Natural Killer (NK) cells. Killing by NK cells is mediated by a small family of activating receptors such as NKp30 that interact with the cellular ligand B7-H6. The outcome of B7-H6-NKp30 interaction was, so far, mainly studied with regard to NK recognition and killing of tumors. Here, we demonstrated that the expression of B7-H6 is upregulated following HCMV infection and that HCMV uses two of its genes: US18 and US20, to interfere with B7-H6 surface expression, in a mechanism involving endosomal degradation, in order to evade NK cell recognition...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819071/genetic-and-non-genetic-factors-associated-with-protein-abundance-of-flavin-containing-monooxygenase-3-in-human-liver
#11
Meijuan Xu, Deepak Kumar Bhatt, Catherine K Yeung, Katrina G Claw, Amarjit S Chaudhry, Andrea Gaedigk, Robin E Pearce, Ulrich Broeckel, Roger Gaedigk, Debbie Nickerson, Erin Schuetz, Allan E Rettie, Steven Leeder, Kenneth E Thummel, Bhagwat Prasad
Hepatic flavin-containing monooxygenase 3 (FMO3) metabolizes a broad array of nucleophilic heteroatom (e.g., N or S)-containing xenobiotics (e.g., amphetamine, sulindac, benzydamine, ranitidine, tamoxifen, nicotine, and ethioniamide), as well as endogenous compounds (e.g., catecholamine and trimethylamine). To predict the effect of genetic and non-genetic factors on the hepatic metabolism of FMO3 substrates, we quantified FMO3 protein abundance in human liver microsomes (HLM; n=445) by LC-MS/MS proteomics. Genotyping/gene-resequencing, mRNA expression, and functional activity (with benzydamine as a probe substrate) of FMO3 were also performed...
August 17, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28819030/estimates-of-burden-and-consequences-of-infants-born-small-for-gestational-age-in-low-and-middle-income-countries-with-intergrowth-21-st-standard-analysis-of-cherg%C3%A2-datasets
#12
Anne Cc Lee, Naoko Kozuki, Simon Cousens, Gretchen A Stevens, Hannah Blencowe, Mariangela F Silveira, Ayesha Sania, Heather E Rosen, Christentze Schmiegelow, Linda S Adair, Abdullah H Baqui, Fernando C Barros, Zulfiqar A Bhutta, Laura E Caulfield, Parul Christian, Siân E Clarke, Wafaie Fawzi, Rogelio Gonzalez, Jean Humphrey, Lieven Huybregts, Simon Kariuki, Patrick Kolsteren, John Lusingu, Dharma Manandhar, Aroonsri Mongkolchati, Luke C Mullany, Richard Ndyomugyenyi, Jyh Kae Nien, Dominique Roberfroid, Naomi Saville, Dianne J Terlouw, James M Tielsch, Cesar G Victora, Sithembiso C Velaphi, Deborah Watson-Jones, Barbara A Willey, Majid Ezzati, Joy E Lawn, Robert E Black, Joanne Katz
Objectives To estimate small for gestational age birth prevalence and attributable neonatal mortality in low and middle income countries with the INTERGROWTH-21(st) birth weight standard.Design Secondary analysis of data from the Child Health Epidemiology Reference Group (CHERG), including 14 birth cohorts with gestational age, birth weight, and neonatal follow-up. Small for gestational age was defined as infants weighing less than the 10th centile birth weight for gestational age and sex with the multiethnic, INTERGROWTH-21(st) birth weight standard...
August 17, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28819007/effects-of-antenatal-melatonin-therapy-on-lung-structure-in-growth-restricted-newborn-lambs
#13
Graeme R Polglase, Jade Barbuto, Beth J Allison, Tamara Yawno, Amy Elizabeth Sutherland, Atul Malhotra, Keith E Schulze, Euan M Wallace, Graham Jenkin, Sharon D Ricardo, Suzanne L Miller
BACKGROUND: Oxidative stress arising from suboptimal placental function contributes to a multitude of pathologies in infants compromised by fetal growth restriction (FGR). FGR infants are at high risk for respiratory dysfunction after birth and poor long-term lung function. OBJECTIVES: To investigate the contribution of oxidative stress to adverse lung development and the effects of melatonin administration, a powerful anti-oxidant, on lung structure in FGR lambs...
August 17, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28818871/sexual-dimorphism-of-the-pulmonary-transcriptome-in-neonatal-hyperoxic-lung-injury-identification-of-angiogenesis-as-a-key-pathway
#14
Cristian Coarfa, Yuhao Zhang, Suman Maity, Dimuthu Perera, Weiwu Jiang, Lihua Wang, Xanthi Couroucli, Bhagavatula Moorthy, Krithika Lingappan
Bronchopulmonary dysplasia (BPD) is characterized by impaired alveolar secondary septation and vascular growth. Exposure to high concentrations of oxygen (hyperoxia) contributes to the development of BPD. Male sex is considered an independent risk factor for the development of BPD. The reasons underlying sexually dimorphic outcomes in premature neonates are not known. We hypothesized that sex-specific modulation of biological processes in the lung under hyperoxic conditions, contributes to sex-based differences...
August 17, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28818854/nasal-midazolam-vs-ketamine-for-neonatal-intubation-in-the-delivery-room-a-randomised-trial
#15
Christophe Milési, Julien Baleine, Thibault Mura, Fernando Benito-Castro, Félicie Ferragu, Gérard Thiriez, Pierre Thévenot, Clémentine Combes, Ricardo Carbajal, Gilles Cambonie
OBJECTIVE: To compare the effectiveness of sedation by intranasal administration of midazolam (nMDZ) or ketamine (nKTM) for neonatal intubation. DESIGN: A multicentre, prospective, randomised, double-blind study. SETTING: Delivery rooms at four tertiary perinatal centres in France. PATIENTS: Preterm neonates with respiratory distress requiring non-emergent endotracheal intubation for surfactant instillation. INTERVENTIONS: Treatment was randomly allocated, with each neonate receiving a bolus of 0...
August 17, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28818852/accuracy-of-11-formulae-to-guide-umbilical-arterial-catheter-tip-placement-in-newborn-infants
#16
Wei Ling Lean, Jennifer A Dawson, Peter G Davis, Christiane Theda, Marta Thio
BACKGROUND: Umbilical arterial catheter (UAC) insertion is a common procedure in the neonatal intensive care unit (NICU). Correct placement of the tip of the UAC at first attempt minimises handling of the infant and reduces the risk of infection and complications. We aimed to determine the accuracy of 11 published formulae to guide UAC placement. METHODS: This was a one-year prospective observational study in a tertiary NICU. Clinicians used their preferred formula for UAC insertion, with X-rays performed immediately post-procedure to check the tip position...
August 17, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28818850/improved-pregnant-women-s-understanding-of-research-information-by-an-enhanced-informed-consent-form-a-randomised-controlled-study-nested-in-neonatal-research
#17
Nut Koonrungsesomboon, Chanchai Traivaree, Sangkae Chamnanvanakij, Pimchitr Rungtragoolchai, Yawana Thanapat, Juntra Karbwang
OBJECTIVE: This study aimed to test the applicability and effectiveness of the enhanced informed consent form (ICF) methodology, proposed by the Strategic Initiative for Developing Capacity in Ethical Review (SIDCER), in neonatal research requiring maternal consent. DESIGN: A single-centre open-label randomised controlled study. SETTING: Antenatal care clinics at Phramongkutklao Hospital, Thailand. PATIENTS: 234 pregnant women who were at risk of preterm labour were enrolled; 232 individuals completed the study...
August 17, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28818743/learning-and-combining-image-neighborhoods-using-random-forests-for-neonatal-brain-disease-classification
#18
Veronika A Zimmer, Ben Glocker, Nadine Hahner, Elisenda Eixarch, Gerard Sanroma, Eduard Gratacós, Daniel Rueckert, Miguel Ángel González Ballester, Gemma Piella
It is challenging to characterize and classify normal and abnormal brain development during early childhood. To reduce the complexity of heterogeneous data population, manifold learning techniques are increasingly applied, which find a low-dimensional representation of the data, while preserving all relevant information. The neighborhood definition used for constructing manifold representations of the population is crucial for preserving the similarity structure and it is highly application dependent. The recently proposed neighborhood approximation forests learn a neighborhood structure in a dataset based on a user-defined distance...
August 9, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28818731/association-between-severities-of-striae-gravidarum-and-obstetric-anal-sphincter-injuries-oasis
#19
Ofra Halperin, Anita Noble, Shosh Balachsan, Ester Klug, Michal Liebergall-Wischnitzer
OBJECTIVES: to examine the association between the severities of Striae Gravidarum (SG) and Obstetric Anal Sphincter Injuries (OASIS) and to measure the symptoms regarding urinary incontinence, fecal/flatus incontinence, and dyspareunia, at 6 and 12 months postpartum. DESIGN: this is a cohort study. SETTING: four university teaching medical centers in Israel, two in the north and two in the center of the country. PARTICIPANTS: women with OASIS were interviewed and assessed for SG...
August 1, 2017: Midwifery
https://www.readbyqxmd.com/read/28818610/surfactant-and-continuous-positive-airway-pressure-for-the-prevention-of-chronic-lung-disease-history-reality-and-new-challenges
#20
REVIEW
Hany Aly, Mohamed A Mohamed, Jen-Tien Wung
The discovery of surfactant was one of the most significant research events to occur in the history of neonatology. Certainly, surfactant saved lives for premature infants who were otherwise considered non-viable. However, the prevention of chronic lung disease did not progress and it became clear that a significant portion of the help surfactant provides to the premature lung is counteracted by mechanical ventilation. A dilemma exists over the priorities in premature management to intubate and administer surfactant or not to intubate and support these infants non-invasively with the use of continuous positive airway pressure...
August 14, 2017: Seminars in Fetal & Neonatal Medicine
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