keyword
MENU ▼
Read by QxMD icon Read
search

Alveolar epithelial injury

keyword
https://www.readbyqxmd.com/read/28916766/stimulatory-secretions-of-airway-epithelial-cells-accelerate-early-repair-of-tracheal-epithelium
#1
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
#2
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
#3
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/28905450/nrf2-transfection-enhances-the-efficacy-of-human-amniotic-mesenchymal-stem-cells-to-repair-lung-injury-induced-by-lipopolysaccharide
#4
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/28903389/epithelial-ho-1-stat3-affords-the-protection-of-subanesthetic-isoflurane-against-zymosan-induced-lung-injury-in-mice
#5
Ling Wang, Ya-Li Zhao, Ning-Ning Liu, Xiao-Shan Zhu, Qin-Qin Liu, Hai-Yu Mei, Li-Feng Wang, An-Gang Yang, Chun-Fang Gao, Jun-Tang Li
Epithelial dysfunction is a key characteristic of acute lung injury (ALI). Isoflurane (ISO) confers lung protection via anti-inflammatory and anti-apoptotic properties. However, the specific role and potential mechanisms of subanesthetic ISO in lung epithelium protection during zymosan-induced ALI remain unclear. In this study, zymosan increased the expression and activity of beneficial heme oxygenase-1 (HO-1) and signal transducers and activators of transcription 3 (STAT3) in the lung and isolated type II alveolar epithelial cells (AECs-II) from wild-type (WT) mice, which was further enhanced by ISO treatment...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28902433/curcumin-alleviates-il-17a-mediated-p53-pai-1-expression-in-bleomycin-induced-alveolar-basal-epithelial-cells
#6
Mahesh Manjunath Gouda, Ashwini Prabhu, Yashodhar Prabhakar Bhandary
Bleomycin mediated inflammatory pathway is known to play an important role in the up regulation of oxidative stress. IL-17A is a pro-inflammatory cytokine involved in the modulation of fibrosis. The complex underlying mechanism for the said phenomenon remains unclear. This newly defined investigation was designed to understand the changes associated with 1L-17A mediated up-regulation of p53 and PAI-1 expression and the role of curcumin in attenuating this process. A549 cells were treated with bleomycin (BLM) and IL-17A to induce the inflammatory response in vitro...
September 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28901469/glycogen-synthase-kinase%C3%A2-3%C3%AE-inhibitor-reduces-lps%C3%A2-induced-acute-lung-injury-in-mice
#7
Qi Ding, Gaoqin Liu, Yuanyuan Zeng, Jianjie Zhu, Zeyi Liu, Junhong Jiang, Jianan Huang
The aim of the present study was to examine the role of Wnt signaling in lipopolysaccharide (LPS)‑induced acute respiratory distress syndrome (ARDS). ARDS was induced by LPS and compared in mice treated with either glycogen synthase kinase‑3β inhibitor (GSKI) or PBS. The protein expression levels of interleukin (IL)‑6, IL‑8, tumor necrosis factor (TNF)‑α, IL‑17, IL‑18 and IL‑1β in the bronchoalveolar lavage fluid (BALF) were examined using murine cytokine‑specific enzyme‑linked immunosorbent assays...
September 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28894668/mucosal-perfusion-preservation-by-a-novel-shapeable-tissue-expander-for-oral-reconstruction
#8
Daria Barwinska, John Garner, Darrell D Davidson, Todd G Cook, George J Eckert, Sunil S Tholpady, Keith L March, Kinam Park, Clark T Barco
BACKGROUND: There are few methods for expanding oral mucosa, and these often cause complications such as tissue necrosis and expander eruption. This study examines mucosal blood perfusion following insertion of a novel shapeable hydrogel tissue expander (HTE). The canine model used subgingival insertion of HTE following tooth extraction and alveolar bone reduction. The primary goal of this study was to gain understanding of epithelial perfusion and reparative responses of gingival mucosa during HTE expansion...
August 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28886383/anatomically-and-functionally-distinct-lung-mesenchymal-populations-marked-by-lgr5-and-lgr6
#9
Joo-Hyeon Lee, Tuomas Tammela, Matan Hofree, Jinwook Choi, Nemanja Despot Marjanovic, Seungmin Han, David Canner, Katherine Wu, Margherita Paschini, Dong Ha Bhang, Tyler Jacks, Aviv Regev, Carla F Kim
The diversity of mesenchymal cell types in the lung that influence epithelial homeostasis and regeneration is poorly defined. We used genetic lineage tracing, single-cell RNA sequencing, and organoid culture approaches to show that Lgr5 and Lgr6, well-known markers of stem cells in epithelial tissues, are markers of mesenchymal cells in the adult lung. Lgr6(+) cells comprise a subpopulation of smooth muscle cells surrounding airway epithelia and promote airway differentiation of epithelial progenitors via Wnt-Fgf10 cooperation...
September 7, 2017: Cell
https://www.readbyqxmd.com/read/28886382/distinct-mesenchymal-lineages-and-niches-promote-epithelial-self-renewal-and-myofibrogenesis-in-the-lung
#10
Jarod A Zepp, William J Zacharias, David B Frank, Christina A Cavanaugh, Su Zhou, Michael P Morley, Edward E Morrisey
The lung is an architecturally complex organ comprising a heterogeneous mixture of various epithelial and mesenchymal lineages. We use single-cell RNA sequencing and signaling lineage reporters to generate a spatial and transcriptional map of the lung mesenchyme. We find that each mesenchymal lineage has a distinct spatial address and transcriptional profile leading to unique niche regulatory functions. The mesenchymal alveolar niche cell is Wnt responsive, expresses Pdgfrα, and is critical for alveolar epithelial cell growth and self-renewal...
September 7, 2017: Cell
https://www.readbyqxmd.com/read/28878195/1-945-25-dihydroxyvitamin-d3-attenuates-tgf-946-induced-pro-fibrotic-effects-in-human-lung-epithelial-cells-through-inhibition-of-epithelial-mesenchymal-transition
#11
Fei Jiang, Yong Yang, Lian Xue, Bingyan Li, Zengli Zhang
Pulmonary fibrosis is a progressive fibrotic lung disease of persisting lung injury and ineffective wound repair, with poor prognosis. Epithelial-mesenchymal transition (EMT) of alveolar epithelia cells is an early event in the development of pulmonary fibrosis, and transforming growth factor β (TGF-β) is an acknowledged inducer of EMT. Epidemiological studies demonstrated that serum levels of 25-hydroxy-vitamin D were associated with the presence of fibrosis diseases. We investigated whether vitamin D attenuated TGF-β-induced pro-fibrotic effects through inhibiting EMT in human alveolar epithelia A549 cells...
September 6, 2017: Nutrients
https://www.readbyqxmd.com/read/28873200/mac-1-deficiency-induces-respiratory-failure-by-affecting-type-i-alveolar-epithelial-cells
#12
J Wang, Y B Ci, C L Liu, H M Sun
As a β2 integrin family member, Mac-1 plays an important role in the inflammatory response. Inflammation and lung injury are closely associated, but the involvement of Mac-1 in the occurrence and development of such pathologies remains poorly understood. We aimed to investigate the relationship between Mac-1 deficiency and respiratory failure in Mac-1 knockout {Mac-1(-/-)} mice, using C57BL/6J mice as a control. The newborn survival rate of Mac-1(-/-) mice was calculated, and mouse lung tissue was treated with hematoxylin and eosin and subjected to immunofluorescent staining...
August 31, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28858401/histopathology-of-middle-east-respiratory-syndrome-coronovirus-mers-cov-infection-clinicopathological-and-ultrastructural-study
#13
Khaled O Alsaad, Ali H Hajeer, Mohammed Al Balwi, Mohammed Al Moaiqel, Nourah Al Oudah, Abdulaziz Al Ajlan, Sameera AlJohani, Sami Alsolamy, Giamal E Gmati, Hanan Balkhy, Hamdan H Al-Jahdali, Salim A Baharoon, Yaseen M Arabi
AIMS: The pathogenesis, viral localization and histopathological features of Middle East Respiratory Syndrome - Coronavirus (MERS-CoV) in human are not sufficiently described. The aims of this study were to explore and define the spectrum of histological and ultrastructural pathological changes affecting various organs in a patient with MERS-CoV infection and represent a base of MERS-CoV histopathology. METHODS AND RESULTS: We analyzed the postmortem histopathological findings and investigated viral particles localization in the pulmonary and extra-pulmonary tissue by transmission electron microscopic examination in a 33-year-old male patient of T-cell lymphoma, who acquired MERS-CoV infection...
August 31, 2017: Histopathology
https://www.readbyqxmd.com/read/28839100/platelet-clec-2-protects-against-lung-injury-via-effects-of-its-ligand-podoplanin-on-inflammatory-alveolar-macrophages-in-the-mouse
#14
Sian Lax, Julie Rayes, Surasak Wichaiyo, Elizabeth J Haining, Kate Lowe, Beata Grygielska, Ryan Laloo, Per Flodby, Zea Borok, Edward D Crandall, David Thickett, Steve P Watson
There is no therapeutic intervention proven to prevent the acute respiratory syndrome (ARDS). Novel mechanistic insights into the pathophysiology of ARDS are therefore required. Platelets are implicated in regulating many of the pathogenic processes which occur during ARDS, however the mechanisms remain elusive. The platelet receptor C-type lectin-like 2 (CLEC-2) has been shown to regulate vascular integrity at sites of acute inflammation. Therefore, the purpose of this study was to establish the role of CLEC-2 and its ligand podoplanin in a mouse model of ARDS...
August 24, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28838258/the-protective-effects-of-bone-morphogenetic-protein-7-against-epithelial-injury-and-matrix-metalloproteases-upregulation-induced-by-silica-in-vitro
#15
D Liang, G An, Z Zhu, Y Wang, G Yang, X Li, P Niu, L Chen, L Tian
OBJECTIVE: We investigate the effects of bone morphogenetic protein-7 (BMP-7) on models with silica-induced and macrophage-mediated fibrosis and its possible mechanisms in vitro. METHODS: Rat alveolar II epithelial (RLE-6TN) cells were incubated with the supernatant of mouse macrophage-like cells (RAW264.7) and treated with 0, 25, 50, and 100 μg/mL silica. Using Western blotting, the epithelial markers (surfactant proteins-C and E-cadherin) and the mesenchymal markers (fibronectin (FN) and viminten (Vim)) were detected...
September 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28837149/idh3-mediates-apoptosis-of-alveolar-epithelial-cells-type-2-due-to-mitochondrial-ca-2-uptake-during-hypocapnia
#16
Martina Kiefmann, Sascha Tank, Paula Keller, Christian Börnchen, Jan L Rinnenthal, Marc-Oliver Tritt, Leonie Schulte-Uentrop, Cynthia Olotu, Alwin E Goetz, Rainer Kiefmann
In adult respiratory distress syndrome (ARDS) pulmonary perfusion failure increases physiologic dead-space (VD/VT) correlating with mortality. High VD/VT results in alveolar hypocapnia, which has been demonstrated to cause edema formation, atelectasis, and surfactant depletion, evoked, at least in part, by apoptosis of alveolar epithelial cells (AEC). However, the mechanism underlying the hypocapnia-induced AEC apoptosis is unknown. Here, using fluorescent live-cell imaging of cultured AEC type 2 we could show that in terms of CO2 sensing the tricarboxylic acid cycle enzyme isocitrate dehydrogenase (IDH) 3 seems to be an important player because hypocapnia resulted independently from pH in an elevation of IDH3 activity and subsequently in an increase of NADH, the substrate of the respiratory chain...
August 24, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28828358/biomarkers-for-the-acute-respiratory-distress-syndrome-how-to-make-the-diagnosis-more-precise
#17
REVIEW
M Isabel García-Laorden, José A Lorente, Carlos Flores, Arthur S Slutsky, Jesús Villar
The acute respiratory distress syndrome (ARDS) is an acute inflammatory process of the lung caused by a direct or indirect insult to the alveolar-capillary membrane. Currently, ARDS is diagnosed based on a combination of clinical and physiological variables. The lack of a specific biomarker for ARDS is arguably one of the most important obstacles to progress in developing novel treatments for ARDS. In this article, we will review the current understanding of some appealing biomarkers that have been measured in human blood, bronchoalveolar lavage fluid (BALF) or exhaled gas that could be used for identifying patients with ARDS, for enrolling ARDS patients into clinical trials, or for better monitoring of patient's management...
July 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28821630/il-17a-deficiency-mitigates-bleomycin-induced-complement-activation-during-lung-fibrosis
#18
Ellyse Cipolla, Amanda J Fisher, Hongmei Gu, Elizabeth A Mickler, Manisha Agarwal, Carol A Wilke, Kevin K Kim, Bethany B Moore, Ragini Vittal
Interleukin 17A (IL-17A) and complement (C') activation have each been implicated in the pathogenesis of idiopathic pulmonary fibrosis (IPF). We have reported that IL-17A induces epithelial injury via TGF-β in murine bronchiolitis obliterans; that TGF-β and the C' cascade present signaling interactions in mediating epithelial injury; and that the blockade of C' receptors mitigates lung fibrosis. In the present study, we investigated the role of IL-17A in regulating C' in lung fibrosis. Microarray analyses of mRNA isolated from primary normal human small airway epithelial cells indicated that IL-17A (100 ng/ml; 24 h; n = 5 donor lungs) induces C' components (C' factor B, C3, and GPCR kinase isoform 5), cytokines (IL8, -6, and -1B), and cytokine ligands (CXCL1, -2, -3, -5, -6, and -16)...
August 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28819748/lipoxin-a4-attenuates-bronchopulmonary-dysplasia-via-upregulation-of-let-7c-and-downregulation-of-tgf-%C3%AE-1-signaling-pathway
#19
Xiao-Qing Chen, Sheng-Hua Wu, Yan-Yan Luo, Bing-Jie Li, Shu-Jun Li, Hong-Yan Lu, Rui Jin, Zhong-Yi Sun
Transforming growth factor-β (TGF-β) superfamily members are key regulators for lung development and progress of bronchopulmonary dysplasia (BPD). The mechanisms by which lipoxin A4 (LXA4) attenuates development of BPD have not been clarified. Neonatal murine BPD models were inducted by hyperoxia treatment. Neonatal mice were exposed to room air or 85% O2 hyperoxia with or without treatment with 5S,6R-methyl-LXA4 or anti-TGF-β antibodies. Mouse lung epithelial cells (MLE-12 cells) and mouse embryonic fibroblasts (NIH/3T3 cells) were cultured in room air or 85% O2 followed by treatment of LXA4, anti-TGF-β antibodies, and let-7c mimic/anti-microRNA transfections...
August 17, 2017: Inflammation
https://www.readbyqxmd.com/read/28818492/-dexmedetomidine-preconditioning-protects-against-lipopolysaccharides-induced-injury-in-the-human-alveolar-epithelial-cells
#20
Lei Zhang, Xian-Jin Zhou, Li-Ying Zhan, Xiao-Jing Wu, Wen-Lan Li, Bo Zhao, Qing-Tao Meng, Zhong-Yuan Xia
BACKGROUND AND OBJECTIVES: Dexmedetomidine (DEX) has demonstrated the preconditioning effect and shown protective effects against organize injury. In this study, using A549 (human alveolar epithelial cell) cell lines, we investigated whether DEX preconditioning protected against acute lung injury (ALI) in vitro. METHODS: A549 were randomly divided into four groups (n=5): control group, DEX group, lipopolysaccharides (LPS) group, and D-LPS (DEX+LPS) group. Phosphate buffer saline (PBS) or DEX were administered...
August 14, 2017: Revista Brasileira de Anestesiologia
keyword
keyword
67462
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"