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https://www.readbyqxmd.com/read/29345368/therapeutic-effect-of-lipoxin-a4-%C3%A2-in-malaria-induced-acute-lung-injury
#1
Tatiana A Pádua, Natalia D Torres, André L P Candéa, Maria Fernanda Souza Costa, Johnatas D Silva, João Luiz Silva-Filho, Fabio T M Costa, Patricia R M Rocco, Mariana C Souza, Maria G Henriques
Acute lung injury (ALI) models are characterized by neutrophil accumulation, tissue damage, alteration of the alveolar capillary membrane, and physiological dysfunction. Lipoxin A4  (LXA4 ) is an anti-inflammatory eicosanoid that was demonstrated to attenuate lipopolysaccharide-induced ALI. Experimental models of severe malaria can be associated with lung injury. However, to date, a putative effect of LXA4  on malaria (M)-induced ALI has not been addressed. In this study, we evaluated whether LXA4 exerts an effect on M-ALI...
January 3, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29345196/surfactant-protein-c-dampens-inflammation-by-decreasing-jak-stat-activation-during-lung-repair
#2
Huiyan Jin, Andrzej K Ciechanowicz, Alanna R Kaplan, Lin Wang, Ping Xia Zhang, Yi-Chien Lu, Rachel E Tobin, Brooke A Tobin, Lauren Cohn, Caroline J Zeiss, Patty J Lee, Emanuela M Bruscia, Diane S Krause
Surfactant Protein C (SPC), a key component of pulmonary surfactant, also plays a role in regulating inflammation. SPC deficiency in patients and mouse models is associated with increased inflammation and delayed repair, but the key drivers of SPC-regulated inflammation in response to injury are largely unknown. This study focuses on a new mechanism of SPC as an anti-inflammatory molecule using SPC-TK/SPC-KO (surfactant protein C-thymidine kinase/surfactant protein C knockout) mice, which represent a novel sterile injury model that mimics clinical acute respiratory distress syndrome (ARDS)...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29345193/serotonin-2a-receptor-inhibition-protects-against-the-development-of-pulmonary-hypertension-and-pulmonary-vascular-remodeling-in-neonatal-mice
#3
Cassidy Delaney, Laurie Sherlock, Susan Fisher, Joanne K Maltzahn, Clyde J Wright, Eva Nozik-Grayck
Pulmonary hypertension (PH) complicating bronchopulmonary dysplasia (BPD) worsens clinical outcomes in former preterm infants. Increased serotonin (5-hydroxytryptamine, 5-HT) signaling plays a prominent role in PH pathogenesis and progression in adults. We hypothesized that increased 5-HT signaling contributes to the pathogenesis of neonatal PH complicating BPD and neonatal lung injury. Thus, we interrogated 5-HT signaling in neonatal mice exposed to bleomycin, previously demonstrated to induce PH and alveolar simplification...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29335159/repeated-domperidone-treatment-modulates-pulmonary-cytokines-in-lps-induced-acute-lung-injury-in-mice
#4
Talita Rossetto Barreto, Carolina Costola-de-Souza, Rafael Oliveira Margatho, Nicolle Queiroz-Hazarbassanov, Sandra Campos Rodrigues, Luciano Freitas Felício, João Palermo-Neto, Adriano Zager
The dopaminergic antagonist drug Domperidone has immunomodulatory effects. We investigated the effects of repeated Domperidone treatment in a model of Lypopolyssacharide (LPS)-induced acute lung inflammation. Adult C57BL/6J mice were treated with either Vehicle or Domperidone for 5days, and challenged intranasally with LPS in the following day. The behavior of mice was analyzed in the open field and elevated plus-maze test before and 24h after LPS challenge. The bronchoalveolar lavage fluid, blood and lung tissue were collected 24h and 48h after LPS challenge...
January 12, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29331644/ozone-exposure-induces-respiratory-barrier-biphasic-injury-and-inflammation-controlled-by-interleukin-33
#5
Chloé Michaudel, Claire Mackowiak, Isabelle Maillet, Louis Fauconnier, Cezmi Akdis, Milena Sokolowska, Anita Dreher, Hern-Tze Tina Tan, Valérie F Quesniaux, Bernhard Ryffel, Dieudonnée Togbe
BACKGROUND: IL-33 plays critical role in the regulation of tissue homeostasis, injury and repair. Whether IL-33 regulates neutrophil recruitment and function independently of airways hyperresponsiveness (AHR) in ozone induced lung injury and inflammation is unclear. OBJECTIVE: To examine the role of IL-33/ST2 axis in lung inflammation upon acute ozone exposure in mice. METHODS: ST2 and IL-33 deficient mice, IL-33-citrine reporter and C57BL/6 (WT) mice underwent a single ozone exposure (1 ppm for 1h) in all studies...
January 10, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29325098/high-level-of-neutrophil-extracellular-traps-correlates-with-poor-prognosis-of-severe-influenza-a-infection
#6
Liuluan Zhu, Lu Liu, Yue Zhang, Lin Pu, Jingyuan Liu, Xingwang Li, Zhihai Chen, Yu Hao, Beibei Wang, Junyan Han, Guoli Li, Shuntao Liang, Haofeng Xiong, Hong Zheng, Ang Li, Jianqing Xu, Hui Zeng
Background: Most patients with severe infection with influenza A virus (IAV) progress to acute respiratory distress syndrome and even multiple organ dysfunction syndrome (MODS). Neutrophil extracellular traps (NETs) can be induced by pathogens and are responsible for immune tissue damage. We conducted a prospective study on the production and effects of NETs in H7N9 and H1N1 patients. Methods: We investigated NET production in plasma and supernatant of cultured neutrophils by measuring cell-free deoxyribonucleic acid (DNA) and myeloperoxidase (MPO)-DNA complexes with PicoGreen dye and enzyme-linked immunosorbent assay methods, respectively...
January 9, 2018: Journal of Infectious Diseases
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
#7
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/29323413/extracorporeal-membrane-oxygenation-for-refractory-severe-respiratory-failure-in-acute-interstitial-pneumonia
#8
Gabriela Gonçalves-Venade, Nuno Lacerda-Príncipe, Roberto Roncon-Albuquerque, José Artur Paiva
Acute interstitial pneumonia (AIP) is a rare idiopathic interstitial lung disease with rapid progressive respiratory failure and high mortality. In the present report, three cases of AIP complicated by refractory respiratory failure supported with extracorporeal membrane oxygenation (ECMO) are presented. One male and two female patients (ages 27-59) were included. Venovenous ECMO support was provided using miniaturized systems, with two-site femoro-jugular circuit configuration. Despite lung protective ventilation, prone position and neuromuscular blockade, refractory respiratory failure of unknown etiology supervened (ratio of arterial oxygen partial pressure to fractional inspired oxygen 46-130) and ECMO was initiated after 3-7 days of mechanical ventilation...
January 11, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29321926/lung-injury-associated-with-electronic-cigarettes-inhalation-diagnosed-by-transbronchial-lung-biopsy
#9
Masayuki Itoh, Kazutetsu Aoshiba, Yoriko Herai, Hiroyuki Nakamura, Tamiko Takemura
A 46-year-old healthy man developed respiratory distress, night sweats, fever, and weight loss after using electronic cigarettes (e-cigs) for approximately 1 month. He presented to the hospital when the symptoms worsened 2 months after onset. The findings of bronchoalveolar lavage (BAL) fluid examination and the following transbronchial lung biopsy examination led to the diagnosis of acute alveolitis: intra-alveolar fibrosis accompanied with exudate containing abundant lipid-laden macrophages, eosinophils, and neutrophils...
January 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29321022/serum-metabolic-profiling-identified-a-distinct-metabolic-signature-in-patients-with-idiopathic-pulmonary-fibrosis-a-potential-biomarker-role-for-lysopc
#10
Barbara Rindlisbacher, Cornelia Schmid, Thomas Geiser, Cédric Bovet, Manuela Funke-Chambour
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a lethal lung disease of unknown etiology. Patients present loss of lung function, dyspnea and dry cough. Diagnosis requires compatible radiologic imaging and, in undetermined cases, invasive procedures such as bronchoscopy and surgical lung biopsy. The pathophysiological mechanisms of IPF are not completely understood. Lung injury with abnormal alveolar epithelial repair is thought to be a major cause for activation of profibrotic pathways in IPF...
January 10, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29315540/stereological-analysis-of-individual-lung-lobes-during-normal-and-aberrant-mouse-lung-alveolarisation
#11
Tuong-Van Hoang, Claudio Nardiello, David E Surate Solaligue, José Alberto Rodríguez-Castillo, Philipp Rath, Konstantin Mayer, István Vadász, Susanne Herold, Kathrin Ahlbrecht, Werner Seeger, Rory E Morty
The quantitative assessment of the lung architecture forms the foundation of many studies on lung development and lung diseases, where parameters such as alveoli number, alveolar size, and septal thickness are quantitatively influenced by developmental or pathological processes. Given the pressing need for robust data that describe the lung structure, there is currently much enthusiasm for the development and refinement of methodological approaches for the unbiased assessment of lung structure with improved precision...
January 9, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29314865/il-17-plays-a-role-in-rsv-induced-lung-inflammation-and-emphysema-in-elastase-and-lps-injured-mice
#12
Yohannes A Mebratu, Yohannes Tesfaigzi
Respiratory syncytial virus (RSV) is associated with enhanced progression of chronic obstructive pulmonary disease (COPD) and COPD exacerbations. However, little is known about the role of IL-17 in RSV-induced lung injury. We first investigated the role of RSV infection in enhancing mucous cell hyperplasia and airspace enlargement in the lungs of mice injured with elastase and lipopolysaccharide (E/LPS). Mice injured with E/LPS had an enhanced and prolonged neutrophilic response to RSV that was associated with decreased levels of type I IFN and increased levels of IL-17, IL-23, CXCL-1, GCSF and CXCL-5 and MMP-9...
January 9, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29303763/development-of-mirror-pain-following-trigeminal-nerve-injury-a-case-report-and-review-of-neuropathic-mechanisms
#13
James A Giglio, John M Gregg
Following injury to a peripheral nerve, patients may complain of pain over the distribution of the same contralateral nerve, a phenomenon referred to as contralateral pain or mirror pain (MP). Symptoms of MP usually begin after the neuropathic pain from the original nerve injury has become chronic. Chronic neuropathic pain can lead to sensitization and spread of pain. Because the diagnosis of MP can be missed, patients may undergo multiple treatment procedures that prove to be ineffective in relieving the pain...
January 2018: General Dentistry
https://www.readbyqxmd.com/read/29301259/sphingolipids-in-ventilator-induced-lung-injury-role-of-sphingosine-1-phosphate-lyase
#14
Vidyani Suryadevara, Panfeng Fu, David Lenin Ebenezer, Evgeny Berdyshev, Irina A Bronova, Long Shuang Huang, Anantha Harijith, Viswanathan Natarajan
Mechanical ventilation (MV) performed in respiratory failure patients to maintain lung function leads to ventilator-induced lung injury (VILI). This study investigates the role of sphingolipids and sphingolipid metabolizing enzymes in VILI using a rodent model of VILI and alveolar epithelial cells subjected to cyclic stretch (CS). MV (0 PEEP (Positive End Expiratory Pressure), 30 mL/kg, 4 h) in mice enhanced sphingosine-1-phosphate lyase (S1PL) expression, and ceramide levels, and decreased S1P levels in lung tissue, thereby leading to lung inflammation, injury and apoptosis...
January 1, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29299188/prevention-of-neurological-injuries-during-mandibular-third-molar-surgery-technical-notes
#15
Gerardo La Monaca, Iole Vozza, Rita Giardino, Susanna Annibali, Nicola Pranno, Maria Paola Cristalli
Surgery to the mandibular third molar is common, and injuries to the inferior alveolar nerve and the lingual nerve are well-recognized complications of this procedure. The aim of these technical notes is to describe operative measures for reducing neurological complications during mandibular third molar surgery. The following procedure should be used to prevent damage to the inferior alveolar nerve: a well-designed mucoperiosteal flap, to obtain appropriate access to the surgical area; a conservative ostectomy on the distal and distal-lingual side; tooth sectioning, to facilitate its removal by decreasing the retention zones; tooth dislocation in the path of withdrawal imposed by the curvature of the root apex; and careful socket debridement, when the roots of the extracted tooth are in intimate contact with the mandibular canal...
April 2017: Annali di Stomatologia
https://www.readbyqxmd.com/read/29290631/emodin-attenuates-bleomycin-induced-pulmonary-fibrosis-via-anti-inflammatory-and-anti-oxidative-activities-in-rats
#16
Sheng-Lan Tian, Yang Yang, Xiao-Liu Liu, Qing-Bang Xu
BACKGROUND Idiopathic pulmonary fibrosis (IPF) can severely damage lung function, which may result in death. Emodin is a major ingredient of rhubarb and has been proven to protect against lung disruptions. Our study focused on the potential medicinal effect of emodin against IPF. MATERIAL AND METHODS The experiment subjects were fully-grown male Sprague-Dawley rats with average weight of 180-220 kg. Histological analyses, Western blotting analysis, quantitative real-time PCR, and statistical analysis were used in the study...
January 1, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29286940/sustained-lung-inflation-at-birth-for-preterm-infants-at-risk-of-respiratory-distress-syndrome-the-proper-pressure-and-duration
#17
N Abd El-Fattah, N Nasef, M F Al-Harrass, Mohammed Khashaba
BACKGROUND: Variations exist among the administered pressure and duration of sustained lung inflation (SLI) in the delivery room (DR). We aimed to evaluate the appropriate pressure and duration needed for SLI in preterm infants with respiratory distress syndrome. METHODS: We prospectively randomized 100 preterm (<32 weeks) infants to receive either conventional therapy of continuous positive airway pressure (CPAP) at 5 cm H2O, or four groups of CPAP plus a single maneuver of SLI at four regimens based on administered pressures and durations; P20D20 (Pressure of 20 cm H2O for a duration of 20 seconds), P20D10 (20 cm H2O for 10 seconds), P15D20 (15 cm H2O for 20 seconds), and P15D10 (15 cm H2O for 10 seconds) using a T-piece ventilator...
2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/29277898/glucose-6-phosphate-dehydrogenase-inhibition-attenuates-acute-lung-injury-through-reduction-in-nadph-oxidase-derived-reactive-oxygen-species
#18
Ahmed Nadeem, Naif O Al-Harbi, Sheikh F Ahmad, Khalid E Ibrahim, Nahid Siddiqui, Mohammed M Al-Harbi
Acute lung injury (ALI) is a heterogeneous disease with the hallmarks of alveolar capillary membrane injury, increased pulmonary edema and pulmonary inflammation. The commonest direct etiological factor for ALI is usually parenchymal lung infection or hemorrhage. Reactive oxygen species (ROS) generated by NADPH oxidase (NOX2) are thought to play an important role in the pathophysiology of ALI. Glucose-6-phosphate dehydrogenase (G6PD) plays an important role both in production of ROS as well as their removal through supply of NADPH...
December 25, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29275618/-effects-of-non-muscle-myosin-%C3%A2-a-silenced-bone-marrow-mesenchymal-stem-cells-on-lung-damage-of-rats-at-early-stage-of-smoke-inhalation-injury
#19
M Z Liu, J J Wang, Z H Fu, Y C Li, Z Y Jiang, W Sun, G H Guo, F Zhu
Objective: To investigate the effects of non-muscle myosin ⅡA (NMⅡA) silenced bone marrow mesenchymal stem cells (BMSCs) on the lung damage of rats at early stage of smoke inhalation injury. Methods: Forty Sprague-Dawley rats were divided into control, simple injury, NMⅡA-BMSCs, and BMSCs groups according to the completely random method, with 10 rats in each group. Rats in control group inhaled air normally, while rats in the latter 3 groups inhaled smoke to reproduce model of smoke inhalation injury...
December 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/29274319/histopathologic-findings-in-lungs-of-patients-treated-with-extracorporeal-membrane-oxygenation
#20
Hee Eun Lee, Eunhee S Yi, Jeffrey T Rabatin, J Kyle Bohman, Anja C Roden
BACKGROUND: The outcome of extracorporeal membrane oxygenation (ECMO) might be influenced by its complications. Only limited information is available regarding the pathologic consequences of ECMO especially in the era of modern ECMO technology. METHODS: We studied the histopathologic findings in autopsy lungs of patients treated with ECMO as compared to those without ECMO. Autopsy files were queried for cases with ECMO. An age and gender-matched control group, comprised of patients who died in the Intensive Care Unit without acute respiratory distress syndrome, pneumonia, or ECMO, was compared with patients with ECMO for cardiac reason...
December 20, 2017: Chest
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