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Surfactant premature

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https://www.readbyqxmd.com/read/28738720/association-of-sp-b-gene-9306-a-g-polymorphism-rs7316-and-risk-of-rds
#1
Neda Fatahi, Nikoo Niknafs, Majid Kalani, Hosein Dalili, Mamak Shariat, Elaheh Amini, Tahereh Esmaeilnia Shirvani, Amir Kamal Hardani, Roya Taheritafti, Nasrin Ghasemi-Fakhr, Mohsen Ghadami, Javad Tavakkoly-Bazzaz, Ramin Rashidi-Nezhad, Fatemeh Nayeri, Ali Rashidi-Nezhad
BACKGROUND: Respiratory distress syndrome (RDS) is a severe pulmonary disease predominantly affects preterm newborns. Polymorphisms of surfactant-protein genes have been mostly evaluated as the candidate contributors in genetics of RDS. However the results are divers in different studies. We aimed at investigating the association of surfactant protein B (SPB) gene 9306 A/G polymorphism (rs7316) with RDS development. METHOD: Three hundred eighty newborns with gestational age of less than 34 weeks were included in a multicenter case-control study...
July 24, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28738158/efficient-interfacially-driven-vehiculization-of-corticosteroids-by-pulmonary-surfactant
#2
Alberto Hidalgo, Fabrizio Salomone, Nieves Fresno, Guillermo Orellana, Antonio Cruz, Jesus Perez-Gil
Pulmonary surfactant is a crucial system to stabilize the respiratory air-liquid interface. Furthermore, pulmonary surfactant has been proposed as an effective method for targeting drugs to the lungs. However, few studies have examined in detail the mechanisms of incorporation of drugs into surfactant, the impact of the presence of drugs on pulmonary surfactant performance at the interface under physiologically-meaningful conditions, or the ability of pulmonary surfactant to use the air-liquid interface to vehiculise drugs to long distances...
July 24, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28724325/use-and-timing-of-surfactant-administration-impact-on-neonatal-outcomes-in-extremely-low-gestational-age-infants-born-in-canadian-neonatal-intensive-care-units
#3
Amelie Stritzke, Khorshid Mohammad, Prakesh S Shah, Xiang Y Ye, Vineet Bhandari, Albert Akierman, Adele Harrison, Valerie Bertelle, Abhay Lodha
BACKGROUND: Use, timing and doses of surfactant in preterm infants are variable in practice in modern NICUs. OBJECTIVE: To explore the association between use and timing of surfactant administration and common neonatal adverse outcomes in preterm infants with gestational age (GA) < 28 weeks. MATERIAL AND METHODS: Neonates admitted to a participating Canadian Neonatal Network NICU between 2013 and 2015 were studied. Infants were divided into three groups based on surfactant administration: None, early (within 30 minutes of life), and late surfactant (> 30 minutes)...
July 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28723887/in-vitro-and-in-vivo-characterization-of-poractant-alfa-supplemented-with-budesonide-for-safe-and-effective-intratracheal-administration
#4
Francesca Ricci, Chiara Catozzi, Francesca Ravanetti, Xabier Murgia, Francesco D'Aló, Natalia Macchidani, Elisa Sgarbi, Valentina Di Lallo, Federica Saccani, Marisa Pertile, Antonio Cacchioli, Silvia Catinella, Gino Villetti, Maurizio Civelli, Francesco Amadei, Franco Stellari Fabio, Barbara Pioselli, Fabrizio Salomone
BACKGROUND: The intratracheal (IT) administration of budesonide using surfactant as a vehicle has been shown to reduce the incidence of bronchopulmonary dysplasia (BPD) in preterm infants. OBJECTIVE: To characterize the in vitro characteristics and in vivo safety and efficacy of the extemporaneous combination of budesonide and poractant alfa. METHODS: The stability, minimum surface tension, and viscosity of the preparation were evaluated by means of HPLC, Wilhelmy balance, and Rheometer, respectively...
July 19, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28667068/role-of-the-nrf2-ho-1-axis-in-bronchopulmonary-dysplasia-and-hyperoxic-lung-injuries
#5
REVIEW
Emanuele Amata, Valeria Pittalà, Agostino Marrazzo, Carmela Parenti, Orazio Prezzavento, Emanuela Arena, Seyed Mohammad Nabavi, Loredana Salerno
Bronchopulmonary dysplasia (BPD) is a chronic illness that usually originates in preterm newborns. Generally, BPD is a consequence of respiratory distress syndrome (RDS) which, in turn, comes from the early arrest of lung development and the lack of pulmonary surfactant. The need of oxygen therapy to overcome premature newborns' compromised respiratory function generates an increasing amount of reactive oxygen species (ROS), the onset of sustained oxidative stress (OS) status, and inflammation in the pulmonary alveoli deputies to respiratory exchanges...
July 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28656097/a-comparative-study-of-the-effect-of-nasal-intermittent-positive-pressure-ventilation-and-nasal-continuous-positive-airway-pressure-on-the-regional-brain-tissue-oximetry-in-premature-newborns-weighing-1500-g
#6
Alireza Sadeghnia, Marzieh Zamani Foroshani, Zohreh Badiei
BACKGROUND: Near-infrared spectroscopy (NIRS) provides the capability of monitoring oxygenation levels in cerebral microscopic vessels, enabling the operator to observe the spontaneous changes in the levels of hemoglobin concentration in tissue and interpret the resulting fluctuations. The current study tried to investigate whether brain's autoregulatory mechanisms in premature newborns have the potential to prevent the adverse effects caused by asynchronous changes of pressure in the rib cage...
2017: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28615099/-hyperoxia-modulates-the-expressions-of-c-ebp%C3%AE-and-pulmonary-surfactant-proteins-in-aecii-of-premature-rats
#7
Yanmin Lu, Hongyan Lu, Jiangyan Liu, Ming Chang, Qiuxia Wang, Wei Tang
Objective To explore the effect of hyperoxia on the expressions of CCAAT enhancer binding protein α (C/EBPα) and pulmonary surfactant proteins (SP-A, SP-B, SP-C, SP-D) and their correlations in primary type II alveolar epithelial cells (AECIIs) from premature rats. Methods AECIIs were divided into an air control group and a hyperoxia model group. The cells of the two groups were respectively exposed toair and 950 mL/L O2. The cells were harvested at 24, 48, and 72 hours after exposure. Inverted phase-contrast microscope was used to observe morphological changes of the cells...
June 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28538237/update-on-postnatal-steroids
#8
Henry L Halliday
Antenatal steroid treatment to enhance fetal lung maturity and surfactant treatment to prevent or treat respiratory distress syndrome have been major advances in perinatal medicine in the past 40 years contributing to improved outcomes for preterm infants. Use of postnatal steroids to prevent or treat chronic lung disease in preterm infants has been less successful and associated with adverse neurodevelopmental outcomes. Although early (in the first week of life) postnatal steroid treatment facilitates earlier extubation and reduces the risk of chronic lung disease, it is associated with adverse effects, such as hyperglycemia, hypertension, gastrointestinal bleeding and perforation, hypertrophic cardiomyopathy, growth failure, and cerebral palsy, and cannot be recommended...
2017: Neonatology
https://www.readbyqxmd.com/read/28501605/the-role-of-multilayers-in-preventing-the-premature-buckling-of-the-pulmonary-surfactant
#9
Mustafa Al-Saiedy, Ali Tarokh, Sultan Nelson, Kiavash Hossini, Francis Green, Chang-Chun Ling, Elmar J Prenner, Matthias Amrein
The pulmonary surfactant is a protein-lipid mixture that spreads into a film at the air-lung interface. The highly-compacted molecules of the film keep the interface from shrinking under the influence of otherwise high surface tension and thus prevent atelectasis. We have previously shown that for the film to withstand a high film pressure without collapsing it needs to assume a specific architecture of a molecular monolayer with islands of stacks of molecular multilayers scattered over the area. Surface activity was assessed in a captive bubble surfactometer (CBS) and the role of cholesterol and oxidation on surfactant function examined...
May 10, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28465315/a-first-in-human-clinical-study-of-a-new-sp-b-and-sp-c-enriched-synthetic-surfactant-chf5633-in-preterm-babies-with-respiratory-distress-syndrome
#10
David G Sweet, Mark A Turner, Zbyněk Straňák, Richard Plavka, Paul Clarke, Ben J Stenson, Dominique Singer, Rangmar Goelz, Laura Fabbri, Guido Varoli, Annalisa Piccinno, Debora Santoro, Christian P Speer
OBJECTIVE: CHF5633 (Chiesi Farmaceutici S.p.A., Parma, Italy) is the first fully synthetic surfactant enriched by peptide analogues of two human surfactant proteins. We planned to assess safety and tolerability of CHF5633 and explore preliminary efficacy. DESIGN: Multicentre cohort study. PATIENTS: Forty infants from 27(+0) to 33(+6) weeks gestation with respiratory distress syndrome requiring fraction of inspired oxygen (FiO2) ≥0.35 were treated with a single dose of CHF5633 within 48 hours after birth...
May 2, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28435650/postnatal-transitional-weight-loss-and-adverse-outcomes-in-extremely-premature-neonates
#11
Rita P Verma, Syed Shibli, Eugene Komaroff
The early postnatal weight loss (EPWL) is highly variable in the extremely low birth weight infants (birth weight <1000 g, ELBW). It is reported to be unassociated with adverse outcomes within a range of 3-21% of birth weight. Its wide range might have contributed to this lack of association. The aim of our paper is to study the effects of maximum EPWL, graded as low, medium and large on clinical outcomes in ELBW infants. In a retrospective cohort observational study EPWL was measured as maximum weight loss from birth weight (MWL) in ELBW infants and grouped as low (5-12%) moderate (18...
March 22, 2017: Pediatric Reports
https://www.readbyqxmd.com/read/28410573/risk-factors-for-necrotizing-enterocolitis-in-neonates-a-systematic-review-of-prognostic-studies
#12
Noor Samuels, Rob A van de Graaf, Rogier C J de Jonge, Irwin K M Reiss, Marijn J Vermeulen
BACKGROUND: Necrotizing enterocolitis (NEC) is a severe multifactorial disease in preterm neonates associated with high morbidity and mortality. Better insight into prognostic values of the many reported factors associated with NEC is needed to enable identification of neonates at risk for NEC. The aim was to systematically review the literature to identify independent risk factors for NEC from the literature. METHODS: Medline, Cochrane, Embase, Pubmed and Google Scholar were searched systematically for cohort studies reporting prognostic factors for NEC in neonates using multivariable analysis...
April 14, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28409751/early-extubation-failure-in-very-low-birth-weight-infants-clinical-outcomes-and-predictive-factors
#13
K Al-Hathlol, N Bin Saleem, M Khawaji, S Al Saif, I Abdelhakim, B Al-Hathlol, E Bazbouz, Q Al Anzi, A Al-Essa
OBJECTIVE: To identify the clinical outcomes and the potential predictive factors of early extubation failure (EEF) in very low birth weight (VLBW) infants. METHODS: A retrospective study of VLBW infants admitted to the neonatal intensive care unit (NICU) over fifteen years. Neonates were intubated and mechanically ventilated on the first day of life, and early extubated within the first 3 days. EEF was defined as the need for re-intubation within 3 days of the first extubation...
2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28407825/-effect-of-pregnancy-induced-hypertension-syndrome-on-complications-in-very-low-birth-weight-preterm-infants
#14
Song-Zhou Xu, Xiao-Yan Hu, Fang Zhao, Yu-Xin Zhou, Shuang-Chuan Zhang
OBJECTIVE: To study the effect of pregnancy-induced hypertension syndrome (PIH) on complications in very low birth weight (VLBW) preterm infants. METHODS: The VLBW preterm infants were enrolled as research subjects, and according to the presence or absence of PIH in their mothers, they were divided into PIH group and non- PIH group. The incidence of major complications and length of hospital stay were compared between the two groups. RESULTS: There were no significant differences between the two groups in gestational age, birth weight, sex, incidence rate of maternal diabetes, and use of antepartum hormone...
April 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28337265/pulmonary-surfactant-synthesis-in-mirna-26a-1-mirna-26a-2-double-knockout-mice-generated-using-the-crispr-cas9-system
#15
Ying-Hui Zhang, Li-Zhi Wu, Hong-Lu Liang, Yang Yang, Jie Qiu, Qing Kan, Wen Zhu, Cheng-Ling Ma, Xiao-Yu Zhou
Pulmonary surfactant (PS), which is synthesized by type II alveolar epithelial cells (AECIIs), maintains alveolar integrity by reducing surface tension. Many premature neonates who lack adequate PS are predisposed to developing respiratory distress syndrome (RDS), one of the leading causes of neonatal morbidity and mortality. PS synthesis is influenced and regulated by various factors, including microRNAs. Previous in vitro studies have shown that PS synthesis is regulated by miR-26a in fetal rat AECIIs. This study aimed to investigate the role of miR-26a in PS synthesis in vivo...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28288148/natriuretic-peptide-c-receptor-in-the-developing-sheep-lung-role-in-perinatal-transition
#16
Bobby Mathew, Christopher A D'Angelis, Satyan Lakshminrusimha, Peter A Nickerson, June J Sokolowski, Vasantha H S Kumar, Huamei Wang, Karen A Wynn, Bruce A Holm, Rita M Ryan
BACKGROUND: At birth, the release of surfactant from Alveolar Type II (ATII) cells is stimulated by increased activity of the beta-adrenergic/adenylyl cyclase/cAMP- signaling cascade. Atrial natriuretic peptide (ANP) stimulates surfactant secretion through Natriuretic peptide receptor A (NPR-A). ANP inhibits adenylyl cyclase activity through its binding to NPR-C. We wished to further understand the role of the NPR-C in perinatal transition. METHODS: We studied fetal and newborn sheep ATII expression of NPR-C and surfactant secretion in isolated ATIIs by measuring (3)[H] choline release into the media...
March 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28270430/the-roles-of-drug-therapy-given-via-the-endotracheal-tube-to-neonates
#17
REVIEW
Anne Greenough, Niovi Papalexopoulou
Many drugs are given to intubated neonates by the inhalation route. The optimum aerosol delivery system, however, has not been identified and there are many challenges in delivering drugs effectively to the lower airways of intubated neonates. The effectiveness of surfactant in prematurely born infants and nitric oxide has been robustly investigated. Other drugs are being used on very limited evidence.
May 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28258032/morbidity-and-mortality-trends-in-very-very-low-birth-weight-premature-infants-in-light-of-recent-changes-in-obstetric-care
#18
Péter Varga, Botond Berecz, Ákos Gasparics, Zsófia Dombi, Zsuzsa Varga, Judit Jeager, Zsófia Magyar, János Rigó, József Gábor Joó, László Kornya
OBJECTIVE: In this study, we describe trends in morbidity and mortality of preterm infants with less than 500mg birth weight in the changing landscape of obstetric and neonatal care. STUDY DESIGN: During a ten year study period between 2006 and 2016 we assessed outcome data for all neonates with less than 500mg birth weight born at our Neonatal Intensive Care Unit. We divided study subjects into two groups based on whether their birth date fell in the first half (2006-2010; n=39) versus the second half (2011-2015; n=27) of the study period comparing clinical outcomes in the two groups...
April 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28245505/change-of-cerebral-oxygenation-during-surfactant-treatment-in-preterm-infants-lisa-versus-insure-procedures
#19
COMPARATIVE STUDY
Giovanna Bertini, Caterina Coviello, Elena Gozzini, Tommaso Bianconi, Cecilia Bresci, Valentina Leonardi, Carlo Dani
Objectives The aim of the study was to compare the effects on cerebral oxygenation in preterm infants of two different procedures for surfactant administration: the LISA (low-invasive method of surfactant administration) and the InSurE (Intubation, SURfactant administration, Extubation). Study Design Twenty premature infants with respiratory distress syndrome were assigned to receive surfactant either by "LISA" (n = 10) or "InSurE" (n = 10) procedure. Patients were continuously studied by near-infrared spectroscopy (NIRS) for the measurement of cerebral regional oxygenation (rSO2C) and calculation of cerebral fractional oxygen extraction rate (cFTOE), and NIRS data were recorded 30 minutes before (T0) surfactant administration, during the procedure (Tproc), and 30 (T1), 60 (T2T2), and 120 minutes (T3) afterward...
April 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28221717/cerebral-and-lung-effects-of-a-new-generation-synthetic-surfactant-with-sp-b-and-sp-c-analogs-in-preterm-lambs
#20
Carmen Rey-Santano, Victoria E Mielgo, Xabier Murgia, Miguel Angel Gomez-Solaetxe, Fabrizio Salomone, Federico Bianco, Nicola Pelizzi, Begoña Loureiro, Jon López de Heredia Y Goya
BACKGROUND: Though natural surfactants (SF) are clinically superior to protein-free synthetic preparations, CHF-5633, a synthetic SF containing SP-B and SP-C analog peptides is a potential alternative to natural SF for treating neonatal respiratory distress syndrome (RDS). Nevertheless, information is lacking regarding the safety of this new treatment for the neonatal brain. We sought to compare the cerebral and pulmonary effects of this new synthetic surfactant (CHF5633) with those of natural porcine surfactant (Cursosurf) in premature lambs with RDS...
February 21, 2017: Pediatric Pulmonology
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