keyword
MENU ▼
Read by QxMD icon Read
search

Lung surfactant

keyword
https://www.readbyqxmd.com/read/29339408/development-of-the-swimbladder-surfactant-system-and-biogenesis-of-lysosome-related-organelles-is-regulated-by-blos1-in-zebrafish
#1
Tianbing Chen, Guili Song, Huihui Yang, Lin Mao, Zongbin Cui, Kaiyao Huang
Hermansky-Pudlak syndrome (HPS) is a human autosomal recessive disorder that is characterized by oculocutaneous albinism and a deficiency of the platelet storage pool resulting from defective biogenesis of lysosome-related organelles (LROs). To date, ten HPS genes have been identified, three of which belong to the octamer complex BLOC-1 (biogenesis of lysosome-related organelles complex 1). One subunit of the BLOC-1 complex, BLOS1, also participates in the BLOC-1-related complex (BORC). Due to lethality at the early embryo stage in BLOS1 knockout mice, the function of BLOS1 in the above two complexes and whether it has a novel function are unclear...
January 16, 2018: Genetics
https://www.readbyqxmd.com/read/29334496/oxygen-in-the-critically-ill-friend-or-foe
#2
Elisa Damiani, Abele Donati, Massimo Girardis
PURPOSE OF REVIEW: To examine the potential harmful effects of hyperoxia and summarize the results of most recent clinical studies evaluating oxygen therapy in critically ill patients. RECENT FINDINGS: Excessive oxygen supplementation may have detrimental pulmonary and systemic effects because of enhanced oxidative stress and inflammation. Hyperoxia-induced lung injury includes altered surfactant protein composition, reduced mucociliary clearance and histological damage, resulting in atelectasis, reduced lung compliance and increased risk of infections...
January 12, 2018: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/29327014/design-of-biomimetic-substrates-for-long-term-maintenance-of-alveolar-epithelial-cells
#3
James C H Poon, Zhongfa Liao, Takaya Suzuki, Miranda M Carleton, John P Soleas, J Stewart Aitchison, Golnaz Karoubi, Alison P McGuigan, Thomas K Waddell
There is a need to establish in vitro lung alveolar epithelial culture models to better understand the fundamental biological mechanisms that drive lung diseases. While primary alveolar epithelial cells (AEC) are a useful option to study mature lung biology, they have limited utility in vitro. Cells that survive demonstrate limited proliferative capacity and loss of phenotype over the first 3-5 days in traditional culture conditions. To address this limitation, we generated a novel physiologically relevant cell culture system for enhanced viability and maintenance of phenotype...
January 12, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29325094/functional-rescue-of-misfolding-abca3-mutations-by-small-molecular-correctors
#4
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/29324568/effects-of-pressure-support-ventilation-on-ventilator-induced-lung-injury-in-mild-acute-respiratory-distress-syndrome-depend-on-level-of-positive-end-expiratory-pressure
#5
Paulo A F Magalhães, Gisele de A Padilha, Lillian Moraes, Cíntia L Santos, Ligia de A Maia, Cassia L Braga, Maria do Carmo M B Duarte, Lívia B Andrade, Alberto Schanaider, Vera L Capellozzi, Robert Huhle, Marcelo Gama de Abreu, Paolo Pelosi, Patricia R M Rocco, Pedro L Silva
BACKGROUND: Harmful effects of spontaneous breathing have been shown in experimental severe acute respiratory distress syndrome (ARDS). However, in the clinical setting, spontaneous respiration has been indicated only in mild ARDS. To date, no study has compared the effects of spontaneous assisted breathing with those of fully controlled mechanical ventilation at different levels of positive end-expiratory pressure (PEEP) on lung injury in ARDS. OBJECTIVE: To compare the effects of assisted pressure support ventilation (PSV) with pressure-controlled ventilation (PCV) on lung function, histology and biological markers at two different PEEP levels in mild ARDS in rats...
January 10, 2018: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29324051/anti-il-8-antibody-potentiates-the-effect-of-exogenous-surfactant-in-respiratory-failure-caused-by-meconium-aspiration
#6
Pavol Mikolka, Jana Kopincova, Petra Kosutova, Maros Kolomaznik, Andrea Calkovska, Daniela Mokra
AIM: Meconium aspiration syndrome (MAS) is life-threatening respiratory failure of newborns which can be treated by exogenous surfactant. In response to meconium, increased levels of chemokine IL-8 (CXCL8) stimulate massive neutrophil infiltration of the lungs. Local accumulation and activation of neutrophils, on-going inflammation, lung edema, and oxidative damage contribute to inactivation of endogenous and therapeutically given surfactants. Therefore, we have hypothesized that addition of monoclonal anti-IL-8 antibody into exogenous surfactant can mitigate the neutrophil-induced local injury and the secondary surfactant inactivation and may finally result in improvement of respiratory functions...
January 11, 2018: Experimental Lung Research
https://www.readbyqxmd.com/read/29323919/effects-of-aggregate-charge-and-subphase-ionic-strength-on-the-properties-of-spread-polyelectrolyte-surfactant-films-at-the-air-water-interface-under-static-and-dynamic-conditions
#7
Andrea Tummino, Jutta Toscano, Federica Sebastiani, Boris A Noskov, Imre Varga, Richard A Campbell
In this work we demonstrate the ability to tune the formation of extended structures in films of poly(sodium styrene sulfonate)/dodecyltrimethylammonium bromide at the air/water interface through control over the charge/structure of aggregates as well as the ionic strength of the subphase. Our methodology to prepare loaded polyelectrolyte/surfactant films from self-assembled liquid crystalline aggregates exploits their fast dissociation and Marangoni spreading of material upon contact with an aqueous subphase...
January 11, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29320485/non-invasive-ventilation-and-surfactant-treatment-as-primary-mode-of-respiratory-support-in-surfactant-deficient-newborn-piglets
#8
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/29311495/fluorescent-imaging-analysis-for-distribution-of-fluorescent-dye-labeled-or-encapsulated-liposome-in-monocrotaline-induced-pulmonary-hypertension-model-rat
#9
Yo Muraki, Midori Yamasaki, Hirohisa Takeuchi, Kimio Tohyama, Noriyasu Sano, Takanori Matsuo
Pulmonary hypertension (PH) is a life-threatening lung disease. Despite the availability of several approved drugs, the development of a new treatment method is needed because of poor prognosis. Tissue selective drug delivery systems can avoid the adverse effects of current therapy and enhance efficacy. We evaluated the possibility of delivering drugs to the lungs of a PH rat model using fluorescence dye-labeled nanosized liposomes. To evaluate the tissue distribution following systemic exposure, fluorescent dye-labeled, 40-180 nm liposomes with and without polyethylene glycol (PEG) were intravenously administered to a monocrotaline-induced PH (MCT) rat model and tissue fluorescence was measured...
January 6, 2018: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29290827/local-intratracheal-delivery-of-perfluorocarbon-nanoparticles-to-lung-cancer-demonstrated-with-magnetic-resonance-multimodal-imaging
#10
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
https://www.readbyqxmd.com/read/29289281/mesoporous-carbon-nanomaterials-induced-pulmonary-surfactant-inhibition-cytotoxicity-inflammation-and-lung-fibrosis
#11
Yunan Chen, Yi Yang, Bolong Xu, Shunhao Wang, Bin Li, Juan Ma, Jie Gao, Yi Y Zuo, Sijin Liu
Environmental exposure and health risk upon engineered nanomaterials are increasingly concerned. The family of mesoporous carbon nanomaterials (MCNs) is a rising star in nanotechnology for multidisciplinary research with versatile applications in electronics, energy and gas storage, and biomedicine. Meanwhile, there is mounting concern on their environmental health risks due to the growing production and usage of MCNs. The lung is the primary site for particle invasion under environmental exposure to nanomaterials...
December 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29282263/feasibility-of-2-d-ultrasound-shear-wave-elastography-of-fetal-lungs-in-case-of-threatened-preterm-labour-a-study-protocol
#12
Nicolas Mottet, Sébastien Aubry, Chrystelle Vidal, Guillaume Boiteux, Jean-Patrick Metz, Didier Riethmuller, Lionel Pazart, Rajeev Ramanah
INTRODUCTION: 2-D ultrasound shear wave elastography (SWE) could be considered as a new noninvasive tool for monitoring fetal lung development based on evaluation of mechanical properties during pregnancy. Interesting results are available concerning the use of SWE on developing organs, especially on premature infants and animal models. The main objective in this study is to evaluate the feasibility of 2-D SWE in human fetal lungs between 24 and 34 weeks of gestation (WG). The secondary objective is to modellise fetal lung-to-liver elastography ratio (LLE ratio) and to assess variations between normal lung and lung surfactant-enriched after a corticosteroids course indicated for a threatened preterm labour (TPL)...
December 26, 2017: BMJ Open
https://www.readbyqxmd.com/read/29282210/atp-is-stored-in-lamellar-bodies-to-activate-vesicular-p2x4-in-an-autocrine-fashion-upon-exocytosis
#13
Giorgio Fois, Veronika Eva Winkelmann, Lara Bareis, Laura Staudenmaier, Elena Hecht, Charlotte Ziller, Konstantin Ehinger, Jürgen Schymeinsky, Christine Kranz, Manfred Frick
Vesicular P2X4 receptors are known to facilitate secretion and activation of pulmonary surfactant in the alveoli of the lungs. P2X4 receptors are expressed in the membrane of lamellar bodies (LBs), large secretory lysosomes that store lung surfactant in alveolar type II epithelial cells, and become inserted into the plasma membrane after exocytosis. Subsequent activation of P2X4 receptors by adenosine triphosphate (ATP) results in local fusion-activated cation entry (FACE), facilitating fusion pore dilation, surfactant secretion, and surfactant activation...
December 27, 2017: Journal of General Physiology
https://www.readbyqxmd.com/read/29281616/influence-of-type-of-congenital-heart-defects-on-epithelial-lining-fluid-composition-in-infants-undergoing-cardiac-surgery-with-cardiopulmonary-bypass
#14
Manuela Simonato, Aldo Baritussio, Virgilio P Carnielli, Luca Vedovelli, Gianclaudio Falasco, Michele Salvagno, Massimo Padalino, Paola Cogo
BACKGROUND: In children with congenital heart disease (CHD), altered pulmonary circulation compromises gas exchange. Moreover, pulmonary dysfunction is a complication of cardiac surgery with cardiopulmonary bypass (CPB). No data are available on the effect of different CHDs on lung injury. The aim of this study was to analyze epithelial lining fluid (ELF) surfactant composition in children with CHD. METHODS: Tracheal aspirates (TAs) from 72 CHD children [age 2.9 (0...
December 27, 2017: Pediatric Research
https://www.readbyqxmd.com/read/29279405/interfacial-curvature-effects-on-the-monolayer-morphology-and-dynamics-of-a-clinical-lung-surfactant
#15
Amit Kumar Sachan, Joseph A Zasadzinski
The morphology of surfactant monolayers is typically studied on the planar surface of a Langmuir trough, even though most physiological interfaces are curved at the micrometer scale. Here, we show that, as the radius of a clinical lung surfactant monolayer-covered bubble decreases to ∼100 µm, the monolayer morphology changes from dispersed circular liquid-condensed (LC) domains in a continuous liquid-expanded (LE) matrix to a continuous LC linear mesh separating discontinuous LE domains. The curvature-associated morphological transition cannot be readily explained by current liquid crystal theories based on isotropic domains...
December 26, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29274832/extremely-preterm-fetal-sheep-lung-responses-to-antenatal-steroids-and-inflammation
#16
Kevin Visconti, Paranthaman Senthamaraikannan, Matthew W Kemp, Masatoshi Saito, Boris W Kramer, John P Newnham, Alan H Jobe, Suhas G Kallapur
BACKGROUND: The efficacy of antenatal steroids for fetal lung maturation in the peri-viable period is not fully understood. OBJECTIVE(S): To determine the lung maturational effects of ANS and inflammation in early gestation sheep fetuses, similar to the peri-viable period in humans. STUDY DESIGN: Date-mated ewes with singleton fetuses were randomly assigned to one of 4 treatment groups (n=8/group): 1) maternal intramuscular injection (IM) of betamethasone (Beta), 2) intra-amniotic lipopolysaccharide (IA) (LPS), 3) Beta+LPS, 4) IA+IM Saline (controls)...
December 21, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29250453/pulmonary-neuroendocrine-cell-hyperplasia-associated-with-surfactant-protein-c-gene-mutation
#17
Norlalak Jiramethee, David Erasmus, Lawrence Nogee, Andras Khoor
Familial interstitial lung disease (ILD) is defined as presence of ILD in 2 or more family members. Surfactant protein C (SFTPC) gene mutations are rare, but well-known cause of familial ILD. We reported a 20-year-old male, who was referred for lung transplantation. He was symptomatic at age 3 and underwent surgical lung biopsy at age 6, which revealed a nonspecific interstitial pneumonia (NSIP) pattern. Genetic workup revealed a novel SFTPC mutation in the first intron with a C to A transversion. At age 21, he underwent bilateral lung transplantation...
2017: Case Reports in Pulmonology
https://www.readbyqxmd.com/read/29248446/cellular-accumulation-and-lipid-binding-of-perfluorinated-alkylated-substances-pfass-a-comparison-with-lysosomotropic-drugs
#18
Diana Sanchez Garcia, Marcus Sjödin, Magnus Hellstrandh, Ulf Norinder, Violetta Nikiforova, Johan Lindberg, Emma Wincent, Åke Bergman, Ian Cotgreave, Vesna Munic Kos
Many chemicals accumulate in organisms through a variety of different mechanisms. Cationic amphiphilic drugs (CADs) accumulate in lysosomes and bind to membranes causing phospholipidosis, whereas many lipophilic chemicals target adipose tissue. Perfluoroalkyl substances (PFASs) are widely used as surfactants, but many of them are highly bioaccumulating and persistent in the environment, making them notorious environmental toxicants. Understanding the mechanisms of their bioaccumulation is, therefore, important for their regulation and substitution with new, less harmful chemicals...
December 14, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29237479/birth-delivery-method-affects-expression-of-immune-genes-in-lung-and-jejunum-tissue-of-neonatal-beef-calves
#19
Carla Surlis, Keelan McNamara, Eoin O'Hara, Sinead Waters, Marijke Beltman, Joseph Cassidy, David Kenny
BACKGROUND: Caesarean section is a routine veterinary obstetrical procedure employed to alleviate dystocia in cattle. However, CS, particularly before the onset of labour, is known to negatively affect neonatal respiration and metabolic adaptation in humans, though there is little published information for cattle. The aim of this study was to investigate the effect of elective caesarean section (ECS) or normal trans-vaginal (TV) delivery, on lung and jejunal gene expression profiles of neonatal calves...
December 14, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29229270/intratracheal-instillation-of-alveolar-type-ii-cells-enhances-recovery-from-acute-lung-injury-in-rats
#20
Raquel Guillamat-Prats, Ferranda Puig, Marta Camprubí-Rimblas, Raquel Herrero, Anna Serrano-Mollar, Maria Nieves Gómez, Jessica Tijero, Michael A Matthay, Lluís Blanch, Antonio Artigas
BACKGROUND: Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are characterized by excess production of inflammatory factors. Alveolar type II (ATII) cells help repair damaged lung tissue, rapidly proliferating and differentiating into alveolar type I cells after epithelial cell injury. In ALI, the lack of viable ATII favors progression to more severe lung injury. ATII cells regulate the immune response by synthesizing surfactant and other anti-inflammatory proteins and lipids...
November 8, 2017: Journal of Heart and Lung Transplantation
keyword
keyword
49292
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"