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Surfactant neonate

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https://www.readbyqxmd.com/read/29449803/the-consequences-of-preterm-birth-and-chorioamnionitis-on-brainstem-respiratory-centers-implications-for-neurochemical-development-and-altered-functions-by-inflammation-and-prostaglandins
#1
REVIEW
Vanesa Stojanovska, Suzanne L Miller, Stuart B Hooper, Graeme R Polglase
Preterm birth is a major cause for neonatal morbidity and mortality, and is frequently associated with adverse neurological outcomes. The transition from intrauterine to extrauterine life at birth is particularly challenging for preterm infants. The main physiological driver for extrauterine transition is the establishment of spontaneous breathing. However, preterm infants have difficulty clearing lung liquid, have insufficient surfactant levels, and underdeveloped lungs. Further, preterm infants have an underdeveloped brainstem, resulting in reduced respiratory drive...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29436403/chronic-interstitial-lung-disease-in-children
#2
REVIEW
Matthias Griese
Children's interstitial lung diseases (chILD) are increasingly recognised and contain many lung developmental and genetic disorders not yet identified in adult pneumology. Worldwide, several registers have been established. The Australasian Registry Network for Orphan Lung Disease (ARNOLD) has identified problems in estimating rare disease prevalence; focusing on chILD in immunocompetent patients, a period prevalence of 1.5 cases per million children and a mortality rate of 7% were determined. The chILD-EU register highlighted the workload to be covered per patient included and provided protocols for diagnosis and initial treatment, similar to the United States chILD network...
March 31, 2018: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/29436355/care-of-the-neonate-on-nasal-continuous-positive-airway-pressure-a-bedside-guide
#3
Jennifer M Guay, Dru Carvi, Deborah A Raines, Wendy A Luce
Respiratory distress continues to be a major cause of neonatal morbidity. Current neonatal practice recommends the use of nasal continuous positive airway pressure (nCPAP) in the immediate resuscitation and continued support of neonates of all gestations with clinical manifestations of respiratory distress. Despite the many short- and long-term benefits of nCPAP, many neonatal care units have met resistance in its routine use. Although there have been numerous recent publications investigating the use and outcomes of various modes of nCPAP delivery, surfactant administration, mechanical ventilation, and other forms of noninvasive respiratory support (high-flow nasal cannula, nasal intermittent positive pressure ventilation), there has been a relative lack of publications addressing the practical bedside care of infants managed on nCPAP...
January 1, 2018: Neonatal Network: NN
https://www.readbyqxmd.com/read/29428947/a-combination-of-the-aerosolized-ppar-%C3%AE-agonist-pioglitazone-and-a-synthetic-surfactant-protein-b-peptide-mimic-prevents-hyperoxia-induced-neonatal-lung-injury-in-rats
#4
Reiko Sakurai, Cindy Lee, Humphrey Shen, Alan J Waring, Frans J Walther, Virender K Rehan
BACKGROUND: Despite improvements in perinatal care, bronchopulmonary dysplasia (BPD) in extremely premature infants has not decreased. Postnatal surfactant therapy provides symptomatic relief from respiratory distress syndrome, but does not translate into a reduction in BPD. Therefore, the search for effective interventions to prevent BPD continues. OBJECTIVES: Since PPAR-γ agonists have been demonstrated to promote neonatal lung maturation and injury repair, we hypothesized that a formulation of a PPAR-γ agonist, pioglitazone (PGZ) and a synthetic lung surfactant (a surfactant protein B peptide mimic, B-YL) combined would stimulate lung maturation and block hyperoxia-induced neonatal lung injury more effectively than either modality alone...
February 9, 2018: Neonatology
https://www.readbyqxmd.com/read/29426264/comparison-between-maternal-and-neonatal-outcome-of-pprom-in-the-cases-of-amniotic-fluid-index-afi-of-more-and-less-than-5-cm
#5
Ashraf Sadat Mousavi, Neda Hashemi, Maryam Kashanian, Narges Sheikhansari, Arash Bordbar, Shayesteh Parashi
The study was performed on pregnant women with a gestational age of 26-32 weeks of pregnancy, who had been admitted to the hospital with a confirmed diagnosis of premature rupture of membranes. In all eligible women, ultrasounds were performed for the evaluation of amniotic fluid index. Then, the women were divided into two groups according to amniotic fluid index of ≥5 cm and <5 cm. These women were followed and monitored up to delivery. The women of the two groups did not have significant difference between them according to age, gestational age at the time of ruptured membrane, body mass index, gravidity, parity, gestational age at delivery and route of delivery...
February 9, 2018: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29424908/hyperoxia-induces-the-apoptosis-of-alveolar-epithelial-cells-and-changes-of-pulmonary-surfactant-proteins
#6
Y Jin, L-Q Peng, A-L Zhao
OBJECTIVE: To explore the changes of surfactant protein C, D (SP-C, SP-D) and apoptosis of alveolar epithelial cells (AEC) in the lung injury of neonatal rats induced by hyperoxia. MATERIALS AND METHODS: We divided neonatal rats within 24 hours into two groups randomly: the air group (n = 50) and the hyperoxia group (n = 50). Rats in the air group and hyperoxia group were bred conventionally and in tanks with normal pressure and 90% concentration of oxygen, respectively...
January 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29420583/controlled-hypothermia-may-improve-surfactant-function-in-asphyxiated-neonates-with-or-without-meconium-aspiration-syndrome
#7
Chiara Autilio, Mercedes Echaide, Daniele De Luca, Jesús Pérez-Gil
BACKGROUND: Whole-body hypothermia (WBH) is used to improve neurological outcomes in perinatal asphyxia. Recent studies suggested a beneficial effect of hypothermia for some types of acute respiratory failure. However, no data are available about the biophysical function of human surfactant during WBH. We investigated whether WBH improves surfactant biophysical properties in asphyxiated neonates with or without meconium aspiration syndrome (MAS). METHODS: Non-bronchoscopic bronchoalveolar lavage (BAL) has been collected from 10 asphyxiated neonates (2 with MAS, 8 with no lung disease (NLD)) at different time-points (pre-WBH, 24h, 48h, 72h of WBH and post-WBH)...
2018: PloS One
https://www.readbyqxmd.com/read/29417645/profiling-of-mirnas-in-neonatal-cloned-bovines-with-collapsed-lungs-and-respiratory-distress
#8
F Y Zhang, N Yang, Y F Rao, W H Du, H S Hao, X M Zhao, H B Zhu, Y Liu
Neonatal respiratory distress is a major mortality factor in cloned animals; however, the pathogenesis of this disease has rarely been investigated. Previous studies have shown that miRNAs regulate critical genes related to lung development, cell differentiation, surfactant synthesis, secretion and lung disease. This study aimed to examine differentially expressed miRNAs in collapsed lungs of cloned bovine neonates and normal lungs in order to identify key pathways and functions that might be related to the pathogenesis of neonatal respiratory distress...
February 8, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29395186/antecedents-and-outcomes-of-abnormal-cranial-imaging-in-moderately-preterm-infants
#9
Girija Natarajan, Seetha Shankaran, Shampa Saha, Abbot Laptook, Abhik Das, Rosemary Higgins, Barbara J Stoll, Edward F Bell, Waldemar A Carlo, Carl D'Angio, Sara B DeMauro, Pablo Sanchez, Krisa Van Meurs, Betty Vohr, Nancy Newman, Ellen Hale, Michele Walsh
OBJECTIVES: To describe the frequency and findings of cranial imaging in moderately preterm infants (born at 290/7-336/7 weeks of gestation) across centers, and to examine the association between abnormal imaging and clinical characteristics. STUDY DESIGN: We used data from the Neonatal Research Network Moderately Preterm Registry, including the most severe early (≤28 days) and late (>28 days) cranial imaging. Stepwise logistic regression and CART analysis were performed after adjustment for gestational age, antenatal steroid use, and center...
January 22, 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29393348/decreased-zonab-expression-promotes-excessive-transdifferentiation-of-alveolar-epithelial-cells-in-hyperoxia-induced-bronchopulmonary-dysplasia
#10
Ana Hou, Jianhua Fu, Yongyan Shi, Lin Qiao, Jun Li, Yujiao Xing, Xindong Xue
Previous studies by our group have confirmed excessive transdifferentiation of alveolar epithelial cells (AECs) in a hyperoxia‑induced bronchopulmonary dysplasia (BPD) model, but the underlying mechanism have remained elusive. The transcription factor zonula occludens 1‑associated nucleic acid binding protein (ZONAB) has the biological functions of inhibition of epithelial cell differentiation and promotion of epithelial cell proliferation. The aim of the present study was to explore the regulatory effect of ZONAB on the transdifferentiation and proliferation of AECs in a model of hyperoxia‑induced lung injury...
January 23, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29388718/neonatal-respiratory-distress-syndrome-and-underlying-mechanisms-in-cloned-cattle
#11
Yifan Rao, Xiuzhu Sun, Na Yang, Fanyi Zhang, Xiaojing Jiang, Linhua Huang, Xiaogai Guo, Weihua Du, Haisheng Hao, Xueming Zhao, Qiuling Jiang, Yan Liu
Neonatal respiratory distress is a major mortality factor in cloned animals, but the pathogenesis of this disease is rarely investigated. In this study, four neonatal cloned cattle, born after full-term gestation, exhibited symptoms of neonatal respiratory distress syndrome (NRDS), which included symptoms of hyaline membrane disease as well as disordered surfactant homeostasis in their collapsed lungs. No differences in DNA methylation or histone modifications correlated with the suppressed SPB and SPC transcription observed in the cloned cattle group (P > 0...
February 1, 2018: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29377922/assessing-the-impacts-of-total-liquid-ventilation-on-left-ventricular-diastolic-function-in-a-model-of-neonatal-respiratory-distress-syndrome
#12
Michaël Sage, Mathieu Nadeau, Claudia Forand-Choinière, Julien Mousseau, Jonathan Vandamme, Claire Berger, Jean-Sébastien Tremblay-Roy, Renaud Tissier, Philippe Micheau, Étienne Fortin-Pellerin
BACKGROUND: Filling the lung with dense liquid perfluorocarbons during total liquid ventilation (TLV) might compress the myocardium, a plausible explanation for the instability occasionally reported with this technique. Our objective is to assess the impacts of TLV on the cardiovascular system, particularly left ventricular diastolic function, in an ovine model of neonatal respiratory distress syndrome. METHOD: Eight newborns lambs, 3.0 ± 0.4 days (3.2 ± 0.3kg) were used in this crossover experimental study...
2018: PloS One
https://www.readbyqxmd.com/read/29363502/prevention-of-bronchopulmonary-dysplasia-in-extremely-low-gestational-age-neonates-current-evidence
#13
REVIEW
Christian F Poets, Laila Lorenz
Bronchopulmonary dysplasia (BPD) is one of the most frequent complications in extremely low gestational age neonates, but has remained largely unchanged in rate. We reviewed data on BPD prevention focusing on recent meta-analyses. Interventions with proven effectiveness in reducing BPD include the primary use of non-invasive respiratory support, the application of surfactant without endotracheal ventilation and the use of volume-targeted ventilation in infants requiring endotracheal intubation. Following extubation, synchronised nasal ventilation is more effective than continuous positive airway pressure in reducing BPD...
January 23, 2018: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/29356579/insulin-treatment-cannot-promote-lipogenesis-in-rat-fetal-lung-in-gestational-diabetes-mellitus-because-of-failure-to-redress-the-imbalance-among-srebp-1-scap-and-insig-1
#14
Jinyan Li, Guanhua Qian, Xiaocui Zhong, Tinghe Yu
Gestational diabetes mellitus (GDM) has a higher incidence of neonatal respiratory distress syndrome, and lipogenesis is required for the synthesis of pulmonary surfactants. The aim of this study was to determine the effect of insulin treatment in GDM on the production of lipids in the lungs of fetal rats. GDM was induced by streptozotocin, and insulin was used to manage diabetes. Type II alveolar epithelial cells (AEC II), bronchoalveolar lavage fluid (BALF), and lung tissues of the neonatal rats were sampled for analyses...
January 22, 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29349730/ccn5-in-alveolar-epithelial-proliferation-and-differentiation-during-neonatal-lung-oxygen-injury
#15
Najla Fiaturi, Joshua W Russo, Heber C Nielsen, John J Castellot
Lung immaturity is the major cause of morbidity and mortality in premature infants, especially those born <28 weeks of gestation. These infants are at high risk of developing respiratory distress syndrome (RDS), a lung disease caused by insufficient surfactant production and immaturity of saccular/alveolar type II epithelial cells in the lung. RDS treatment includes oxygen and respiratory support that improve survival but also increase the risk for bronchopulmonary dysplasia (BPD), a chronic lung disease characterized by arrested alveolarization, airway hyperreactivity, and pulmonary hypertension...
January 18, 2018: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29325421/effects-of-underwater-bubble-cpap-on-very-low-birth-weight-preterm-newborns-in-the-delivery-room-and-after-transport-to-the-neonatal-intensive-care-unit
#16
Vera Lucia Barros Abelenda, Tania Cristina Oliveira Valente, Cirlene Lima Marinho, Agnaldo José Lopes
The development of less invasive ventilatory strategies in very-low-birth-weight (VLBW) preterm newborns has been a growing concern in recent decades. This study aimed to measure differences in the clinical progression of preterm newborns using two distinct periods in a university hospital: before and after using underwater bubble continuous positive airway pressure (ubCPAP). This is a retrospective study of VLBW preterm newborns with gestational ages less than or equal to 32 weeks admitted to the neonatal intensive care unit...
January 1, 2018: Journal of Child Health Care: for Professionals Working with Children in the Hospital and Community
https://www.readbyqxmd.com/read/29325094/functional-rescue-of-misfolding-abca3-mutations-by-small-molecular-correctors
#17
Susanna Kinting, Stefanie Höppner, Ulrike Schindlbeck, Maria E Forstner, Jacqueline Harfst, Thomas Wittmann, Matthias Griese
ABCA3, a phospholipid transporter in lung lamellar bodies (LB), is essential for the assembly of pulmonary surfactant and LB biogenesis. Mutations in the ABCA3 gene are an important genetic cause for respiratory distress syndrome in neonates and interstitial lung disease in children and adults, for which there is currently no cure.The aim of this study was to prove that disease causing misfolding ABCA3 mutations can be corrected in vitro and to investigate available options for correction.We stably expressed HA-tagged wild type ABCA3 or variants p...
January 9, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29320485/non-invasive-ventilation-and-surfactant-treatment-as-primary-mode-of-respiratory-support-in-surfactant-deficient-newborn-piglets
#18
Carmen Rey-Santano, Victoria E Mielgo, Miguel Angel Gomez-Solaetxe, Francesca Ricci, Federico Bianco, Fabrizio Salomone, Begoña Loureiro, Jon López de Heredia Y Goya
BACKGROUND: Nasal continuous positive airway pressure (NCPAP) and nasal intermittent positive pressure ventilation (NIPPV), forms of non-invasive ventilation (NIV) for respiratory support, are increasingly being chosen as the initial treatment for neonates with surfactant (SF) deficiency. Our objective was to compare NCPAP with NIPPV with or without SF administration as a primary mode of ventilation. METHODS: Twenty-four newborn piglets with SF-deficient lung injury produced by repetitive bronchoalveolar lavages were randomly assigned to NCPAP or NIPPV, with or without SF administration (InSurE method)...
January 10, 2018: Pediatric Research
https://www.readbyqxmd.com/read/29315806/five-country-manikin-study-found-that-neonatologists-preferred-using-the-lisacath-rather-than-the-angiocath-for-less-invasive-surfactant-administration
#19
Laura Fabbri, Katrin Klebermass-Schrehof, Marta Aguar, Catherine Harrison, Ewa Gulczyńska, Debora Santoro, Marco Di Castri, Vincent Rigo
AIM: Less invasive surfactant administration (LISA) has been shown to decrease the risk of death and bronchopulmonary dysplasia in preterm neonates. The LISAcath is the first catheter to be specifically developed for LISA and we compared the clinical impressions of neonatologists using the LISAcath and the commonly-used Angiocath in a simulated setting. METHODS: This was a multinational, multicentre study, conducted in October 2016, which involved 39 neonatologists who were recruited by employees of the sponsor from large, well-recognised neonatal intensive care units across Europe...
January 5, 2018: Acta Paediatrica
https://www.readbyqxmd.com/read/29290827/local-intratracheal-delivery-of-perfluorocarbon-nanoparticles-to-lung-cancer-demonstrated-with-magnetic-resonance-multimodal-imaging
#20
Lina Wu, Xiaofei Wen, Xiance Wang, Chunan Wang, Xilin Sun, Kai Wang, Huiying Zhang, Todd Williams, Allen J Stacy, Junjie Chen, Anne H Schmieder, Gregory M Lanza, Baozhong Shen
Eighty percent of lung cancers originate as subtle premalignant changes in the airway mucosal epithelial layer of bronchi and alveoli, which evolve and penetrate deeper into the parenchyma. Liquid-ventilation, with perfluorocarbons (PFC) was first demonstrated in rodents in 1966 then subsequently applied as lipid-encapsulated PFC emulsions to improve pulmonary function in neonatal infants suffering with respiratory distress syndrome in 1996. Subsequently, PFC nanoparticles (NP) were extensively studied as intravenous (IV) vascular-constrained nanotechnologies for diagnostic imaging and targeted drug delivery applications...
2018: Theranostics
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