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https://www.readbyqxmd.com/read/28944930/protective-effect-of-catalpol-on-nicotine%C3%A2-induced-injury-of-alveolar-bone-and-associated-underlying-mechanisms
#1
Yanwu Li, Xingai Jin, Limin Mao
Smoking is an important factor that causes periodontitis, which manifests as alveolar bone injury and absorption, and has a high incidence and unfavorable treatment efficacy. Nicotine causes ischemia and inflammation of the periodontium and inhibits the mineralization of alveolar bones. Previous studies have revealed the anti‑tumor biological activities of catalpol, in addition to neuroprotection and anti‑inflammation. The present study therefore investigated the underlying protective mechanism of catalpol in alveolar bone injury...
September 25, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28942884/overexpression-of-il-38-protein-in-anticancer-drug-induced-lung-injury-and-acute-exacerbation-of-idiopathic-pulmonary-fibrosis
#2
Masaki Tominaga, Masaki Okamoto, Tomotaka Kawayama, Masanobu Matsuoka, Shinjiro Kaieda, Yuki Sakazaki, Takashi Kinoshita, Daisuke Mori, Akira Inoue, Tomoaki Hoshino
BACKGROUND: Interleukin (IL)-38, a member of the IL-1 family, shows high homology to IL-1 receptor antagonist (IL-1Ra) and IL-36 receptor antagonist (IL-36Ra). Its function in interstitial lung disease (ILD) is still unknown. METHODS: To determine the expression pattern of IL-38 mRNA, a panel of cDNAs derived from various tissues was analyzed by quantitative real-time PCR. Immunohistochemical reactivity with anti-human IL-38 monoclonal antibody (clone H127C) was evaluated semi-quantitatively in lung tissue samples from 12 patients with idiopathic pulmonary fibrosis/usual interstitial pneumonia (IPF/UIP), 5 with acute exacerbation of IPF, and 10 with anticancer drug-induced ILD (bleomycin in 5 and epidermal growth factor receptor-tyrosine kinase inhibitor in 5)...
September 2017: Respiratory Investigation
https://www.readbyqxmd.com/read/28937238/effects-of-roflumilast-a-phosphodiesterase-4-inhibitor-on-the-lung-functions-in-a-saline-lavage-induced-model-of-acute-lung-injury
#3
P Kosutova, P Mikolka, M Kolomaznik, S Rezakova, A Calkovska, D Mokra
Acute lung injury (ALI) is associated with deterioration of alveolar-capillary lining and transmigration and activation of inflammatory cells. Whereas a selective phosphodiesterase-4 (PDE4) inhibitor roflumilast has exerted potent anti-inflammatory properties, this study evaluated if its intravenous delivery can influence inflammation, edema formation, and respiratory parameters in rabbits with a lavage-induced model of ALI. ALI was induced by repetitive saline lung lavage (30 ml/kg). Animals were divided into 3 groups: ALI without therapy (ALI), ALI treated with roflumilast i...
September 22, 2017: Physiological Research
https://www.readbyqxmd.com/read/28937231/pulmonary-surfactant-and-bacterial-lipopolysaccharide-the-interaction-and-its-functional-consequences
#4
M Kolomaznik, Z Nova, A Calkovska
The respiratory system is constantly exposed to pathogens which enter the lungs by inhalation or via blood stream. Lipopolysaccharide (LPS), also named endotoxin, can reach the airspaces as the major component of the outer membrane of Gram-negative bacteria, and lead to local inflammation and systemic toxicity. LPS affects alveolar type II (ATII) cells and pulmonary surfactant and although surfactant molecule has the effective protective mechanisms, excessive amount of LPS interacts with surfactant film and leads to its inactivation...
September 22, 2017: Physiological Research
https://www.readbyqxmd.com/read/28936122/depletion-of-club-cells-attenuates-bleomycin-induced-lung-injury-and-fibrosis-in-mice
#5
Tetsuya Yokoyama, Toyoshi Yanagihara, Kunihiro Suzuki, Naoki Hamada, Kazuya Tsubouchi, Saiko Ogata-Suetsugu, Hironori Mikumo, Chika Ikeda-Harada, Takashige Maeyama, Kazuyoshi Kuwano, Yoichi Nakanishi
BACKGROUND: The role of bronchiolar epithelial cells in the pathogenesis of pulmonary fibrosis has not been clarified. We previously demonstrated DNA damage in murine bronchioles in the early stages of bleomycin-induced pulmonary fibrosis that subsequently extended to alveolar cells at the advanced stages of the disease. Club cells are progenitor cells for bronchioles and are known to play protective roles against lung inflammation and damage. The aim of the present study was to elucidate the role of club cells in the development of pulmonary fibrosis...
2017: Journal of Inflammation
https://www.readbyqxmd.com/read/28935810/sulfur-dioxide%C3%A2-suppresses-inflammatory-response-by-sulfenylating-nf-%C3%AE%C2%BAb-p65-at-cysteine-38-in-a-rat-model-of-acute-lung-injury
#6
Siyao Chen, Yaqian Huang, Zhiwei Liu, Wen Yu, Heng Zhang, Kun Li, Xiaoqi Yu, Chaoshu Tang, Bin Zhao, Junbao Du, Hongfang Jin
This study was designed to investigate whether endogenous sulfur dioxide (SO2) controlled pulmonary inflammation in a rat model of oleic acid (OA)-induced acute lung injury (ALI). In this model, adenovirus expressing aspartate aminotransferase (AAT) 1 was delivered to the lungs, and the levels of SO2 and pro-inflammatory cytokines in rat lung tissues were measured. In the human alveolar epithelial cell line A549, the nuclear translocation and DNA binding activities of wild-type (wt) and C38S NF-κB p65 were detected...
September 21, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28935638/phagocytosis-of-microparticles-by-alveolar-macrophages-during-acute-lung-injury-requires-mertk
#7
Michael P Mohning, Stacey M Thomas, Lea Barthel, Kara J Mould, Alexandra L McCubbrey, S Courtney Frasch, Donna Bratton, Peter M Henson, William J Janssen
Microparticles are a newly recognized class of mediators in the pathophysiology of lung inflammation and injury, but little is known about the factors that regulate their accumulation and clearance. The primary objective of our study was to determine whether alveolar macrophages engulf microparticles and to elucidate the mechanisms by which this occurs. Alveolar microparticles were quantified in bronchoalveolar fluid of mice with lung injury induced by LPS and hydrochloric acid. Microparticle numbers were greatest at the peak of inflammation and declined as inflammation resolved...
September 21, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28932988/surgical-treatment-of-painful-inferior-alveolar-nerve-injuries-following-endodontic-treatment-a-consecutive-case-series-of-seven-patients
#8
Federico Biglioli, Otilija Kutanovaite, Luca Autelitano, Alessandro Lozza, Laura Moneghini, Gaetano Bulfamante, Fabiana Allevi
PURPOSE: Injuries of the inferior alveolar nerve (IAN) related to endodontic treatment are being increasingly reported. However, consensus on the preferred intervention and the timing of and indications for surgical treatment is lacking. Here, we describe our experience with painful IAN injuries arising from endodontic treatment and requiring prompt microsurgical treatment. METHODS: Seven consecutive patients with painful IAN injuries were referred to the Maxillofacial Surgery Unit of San Paolo Hospital in Milan...
September 20, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28931657/neutrophil-transfer-of-mir-223-to-lung-epithelial-cells-dampens-acute-lung-injury-in-mice
#9
Viola Neudecker, Kelley S Brodsky, Eric T Clambey, Eric P Schmidt, Thomas A Packard, Bennett Davenport, Theodore J Standiford, Tingting Weng, Ashley A Fletcher, Lea Barthel, Joanne C Masterson, Glenn T Furuta, Chunyan Cai, Michael R Blackburn, Adit A Ginde, Michael W Graner, William J Janssen, Rachel L Zemans, Christopher M Evans, Ellen L Burnham, Dirk Homann, Marc Moss, Simone Kreth, Kai Zacharowski, Peter M Henson, Holger K Eltzschig
Intercellular transfer of microRNAs can mediate communication between critical effector cells. We hypothesized that transfer of neutrophil-derived microRNAs to pulmonary epithelial cells could alter mucosal gene expression during acute lung injury. Pulmonary-epithelial microRNA profiling during coculture of alveolar epithelial cells with polymorphonuclear neutrophils (PMNs) revealed a selective increase in lung epithelial cell expression of microRNA-223 (miR-223). Analysis of PMN-derived supernatants showed activation-dependent release of miR-223 and subsequent transfer to alveolar epithelial cells during coculture in vitro or after ventilator-induced acute lung injury in mice...
September 20, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28923684/ikk%C3%AE-activation-in-the-fetal-lung-mesenchyme-alters-lung-vascular-development-but-not-airway-morphogenesis
#10
Alyssa M McCoy, Jennifer L Herington, Ashley N Stouch, Anamika B Mukherjee, Omar Lakhdari, Timothy S Blackwell, Lawrence S Prince
In the immature lung, inflammation and injury disrupt epithelial-mesenchymal interactions required for normal development. Innate immune signaling and NF-κB activation disrupt the normal expression of multiple mesenchymal genes playing key roles in airway branching and alveolar formation. To test the role of the NF-κB pathway specifically in lung mesenchyme, we utilized the mesenchymal Twist2-Cre to drive expression of a constitutively active IKKβ mutant (IKKβca) in developing mice. Embryonic Twist2-IKKβca mice were generated in expected numbers and appeared grossly normal...
September 15, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28923112/cobalt-nanoparticles-induce-lung-injury-dna-damage-and-mutations-in-mice
#11
Rong Wan, Yiqun Mo, Zhenyu Zhang, Mizu Jiang, Shichuan Tang, Qunwei Zhang
BACKGROUND: We and other groups have demonstrated that exposure to cobalt nanoparticles (Nano-Co) caused oxidative stress and inflammation, which have been shown to be strongly associated with genotoxic and carcinogenic effects. However, few studies have reported Nano-Co-induced genotoxic effects in vivo. Here, we propose that Nano-Co may have high genotoxic effects due to their small size and high surface area, which have high capacity for causing oxidative stress and inflammation. METHODS: gpt delta transgenic mice were used as our in vivo study model...
September 18, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28920101/potential-therapeutic-targets-in-nrf2-dependent-protection-against-neonatal-respiratory-distress-disease-predicted-by-cdna-microarray-analysis-and-bioinformatics-tools
#12
Hye-Youn Cho, Xuting Wang, Jianying Li, Douglas A Bell, Steven R Kleeberger
Hyperoxia exposure of newborn rodents has served as a model for bronchopulmonary dysplasia (BPD) phenotypes found in a sub-population of human premature infants. We previously demonstrated that Nrf2 modulates molecular events during saccular-to-alveolar lung maturation and also has a protective role in the pathogenesis of hyperoxia-induced acute lung injury, mortality, arrest of saccular-to-alveolar transition, and lung injury, using Nrf2-deficient and wild-type neonate mice. In this review, we describe how whole-genome transcriptome analyses can identify the means through which Nrf2 transcriptionally modulates organ injury and morphology, cellular growth/proliferation, vasculature development, and immune response during BPD-like pathogenesis...
December 2016: Current Opinion in Toxicology
https://www.readbyqxmd.com/read/28916766/stimulatory-secretions-of-airway-epithelial-cells-accelerate-early-repair-of-tracheal-epithelium
#13
Egi Kardia, Rafeezul Mohamed, Badrul Hisham Yahaya
Airway stem/progenitor epithelial cells (AECs) are notable for their differentiation capacities in response to lung injury. Our previous finding highlighted the regenerative capacity of AECs following transplantation in repairing tracheal injury and reducing the severity of alveolar damage associated acute lung injury in a rabbit model. The goal of this study is to further investigate the potential of AECs to re-populate the tracheal epithelium and to study their stimulatory effect on inhibiting pro-inflammatory cytokines, epithelial cell migration and proliferation, and epithelial-to-mesenchymal transition (EMT) process following tracheal injury...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28916165/muc1-deficiency-exacerbates-pulmonary-fibrosis-in-a-mouse-model-of-silicosis
#14
Kosuke Kato, Marina A Zemskova, Alec D Hanss, Marianne M Kim, Sandra J Gendler, Ross Summer, Kwang Chul Kim
BACKGROUND: MUC1 (MUC in human and Muc in animals) is a membrane-tethered mucin expressed on the apical surface of lung epithelial cells. However, in the lungs of patients with interstitial lung disease, MUC1 is aberrantly expressed in hyperplastic alveolar type II epithelial (ATII) cells and alveolar macrophages (AM), and elevated levels of extracellular MUC1 are found in bronchoalveolar lavage (BAL) fluid and the serum of these patients. While pro-fibrotic effects of extracellular MUC1 have recently been described in cultured fibroblasts, the contribution of MUC1 to the pathobiology of pulmonary fibrosis is unknown...
September 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28912466/using-a-novel-microfabricated-model-of-the-alveolar-capillary-barrier-to-investigate-the-effect-of-matrix-structure-on-atelectrauma
#15
N Higuita-Castro, M T Nelson, V Shukla, P A Agudelo-Garcia, W Zhang, S M Duarte-Sanmiguel, J A Englert, J J Lannutti, D J Hansford, S N Ghadiali
The alveolar-capillary barrier is composed of epithelial and endothelial cells interacting across a fibrous extracelluar matrix (ECM). Although remodeling of the ECM occurs during several lung disorders, it is not known how fiber structure and mechanics influences cell injury during cyclic airway reopening as occurs during mechanical ventilation (atelectrauma). We have developed a novel in vitro platform that mimics the micro/nano-scale architecture of the alveolar microenvironment and have used this system to investigate how ECM microstructural properties influence epithelial cell injury during airway reopening...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912380/exposure-of-neonatal-mice-to-bromine-impairs-their-alveolar-development-and-lung-function
#16
Tamas Jilling, Changchun Ren, Aaron Jefthy Yee, Saurabh Aggarwal, Brian Halloran, Namasivayam Ambalavanan, Sadis Matalon
The halogen bromine (Br2) is used extensively in industry and stored and transported in large quantities. Its accidental or malicious release into the atmosphere has resulted in significant casualties. The pathophysiology of Br2-induced lung injury has been studied in adult animals, but the consequences of Br2 exposure to the developing lung are completely unknown. We exposed neonatal mouse littermates on postnatal day 3 (P3) to either Br2 at 400 ppm for 30 minutes (400/30), to Br2 at 600 ppm for 30 minutes (600/30), or to room air, then returned them to their dams and observed until P14...
September 14, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28911958/application-of-real-time-surgical-navigation-for-zygomatic-implant-insertion-in-patients-with-severely-atrophic-maxilla
#17
Feng Wang, Michael M Bornstein, Kuofeng Hung, Shengchi Fan, Xiaojun Chen, Wei Huang, Yiqun Wu
PURPOSE: Computer-aided treatment technology has extended its applications to oral implantology. This report describes the authors' initial clinical experience on the application of a commercially available navigation system (VectorVision) in zygomatic implant (ZI) insertion in the severely atrophic maxilla. MATERIALS AND METHODS: This was a retrospective longitudinal study. Eligible patients with maxillary edentulism who were treated with ZI placement were enrolled...
August 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28905450/nrf2-transfection-enhances-the-efficacy-of-human-amniotic-mesenchymal-stem-cells-to-repair-lung-injury-induced-by-lipopolysaccharide
#18
Shouqin Zhang, Wei Jiang, Lijie Ma, Yuhao Liu, Xiangyu Zhang, Sheng Wang
Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are clinical emergencies with no effective pharmaceutical treatment. This study aims to determine the protective effects of Nrf2-transfected human amniotic mesenchymal stem cells (hAMSCs) against lipopolysaccharide (LPS)-induced lung injury in mice. hAMSCs stably transfected with Nrf2 or green fluorescent protein control were transplanted into male C57BL/6 mice via the tail vein 4 h after intratracheal instillation of LPS. At 3, 7 and 14 days after cell transplantation, total lung injury score (the Smith score) was determined by hematoxylin and eosin staining...
September 14, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28904482/mathematics-of-ventilator-induced-lung-injury
#19
REVIEW
Ubaidur Rahaman
Ventilator-induced lung injury (VILI) results from mechanical disruption of blood-gas barrier and consequent edema and releases of inflammatory mediators. A transpulmonary pressure (PL) of 17 cmH2O increases baby lung volume to its anatomical limit, predisposing to VILI. Viscoelastic property of lung makes pulmonary mechanics time dependent so that stress (PL) increases with respiratory rate. Alveolar inhomogeneity in acute respiratory distress syndrome acts as a stress riser, multiplying global stress at regional level experienced by baby lung...
August 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28904478/how-useful-is-extravascular-lung-water-measurement-in-managing-lung-injury-in-intensive-care-unit
#20
Anirban Bhattacharjee, Debasis Pradhan, Prithwis Bhattacharyya, Samarjit Dey, Daniala Chhunthang, Akash Handique, Angkita Barman, Mohd Yunus
CONTEXT: The primary goal of septic shock management is optimization of organ perfusion, often at the risk of overloading the interstitium and causing pulmonary edema. The conventionally used end points of resuscitation do not generally include volumetric parameters such as extravascular lung water index (EVLWI) and pulmonary vascular permeability index (PVPI). AIMS: This study aimed to assess the prognostic value of EVLWI and PVPI by calculating their correlation with the severity of lung injury...
August 2017: Indian Journal of Critical Care Medicine
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