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Airway remodelling

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https://www.readbyqxmd.com/read/28229930/atrial-natriuretic-peptide-a-novel-mediator-for-tgf-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-16hbe-14o-and-a549-cells
#1
Shuyuan Chu, Xiufeng Zhang, Yabing Sun, Yuanyuan Yu, Yaxi Liang, Ming Jiang, Jianwei Huang, Libing Ma
Atrial natriuretic peptide (ANP) is increasingly expressed on airway and inhibits pulmonary arterial remodeling. However, the role of ANP in remodeling of respiratory system is still unclear. The role of ANP on airway remodeling and the possible mechanism was explored in this study. Both human bronchial epithelial 16HBE-14o cells and alveolar epithelial A549 cells were stimulated by TGF-β1, ANP, cGMP inhibitor, PKG inhibitor, and cGMP analogue. The expressions of epithelial markers, mesenchymal markers, and Smad3 were assessed by quantitative real-time PCR and western blotting...
February 13, 2017: Peptides
https://www.readbyqxmd.com/read/28223227/mitogen-activated-protein-kinases-as-therapeutic-targets-for-asthma
#2
REVIEW
MirHojjat Khorasanizadeh, Mahsa Eskian, Erwin W Gelfand, Nima Rezaei
Corticosteroid-resistant asthmatics, although comprising only a portion of the asthma population, account for most of the morbidity, mortality and economic burden associated with asthma. Moreover, corticosteroids are not effective inhibitors of airway remodeling changes, and their long-term use is associated with debilitating systemic side effects. Therefore, potent and safe novel therapeutic alternatives, targeting basic pathophysiological mechanisms responsible for the severe asthmatic phenotype are urgently needed...
February 13, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28220848/elevated-expression-of-placental-growth-factor-is-associated-with-airway-wall-vascular-remodelling-and-thickening-in-smokers-with-asthma
#3
Dong Wu, Tianwen Lai, Yalian Yuan, Min Chen, Jun Xia, Wen Li, Guihai Pan, Binfan Yuan, Quanchao Lv, Yanyu Li, Dongmin Li, Bin Wu
The increased expression of placental growth factor (PlGF) in chronic obstructive pulmonary disease and allergy-related asthma suggests its role in the pathogenesis of these diseases. In asthmatic smokers, airway remodelling is accompanied by an accelerated decline in lung function. However, whether PlGF contributes to the persistent airflow obstruction and vascular remodelling typically seen in asthmatic smokers is unknown. In this study we measured lung function, airway-wall thickening, and PlGF levels in serum and induced sputum in 74 asthmatic and 42 healthy smokers and never-smokers...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28216579/a-plant-proteinase-inhibitor-from-enterolobium-contortisiliquum-attenuates-pulmonary-mechanics-inflammation-and-remodeling-induced-by-elastase-in-mice
#4
Osmar Aparecido Theodoro-Júnior, Renato Fraga Righetti, Rafael Almeida-Reis, Bruno Tadeu Martins-Oliveira, Leandro Vilela Oliva, Carla Máximo Prado, Beatriz Mangueira Saraiva-Romanholo, Edna Aparecida Leick, Nathalia Montouro Pinheiro, Yara Aparecida Lobo, Mílton de Arruda Martins, Maria Luiza Vilela Oliva, Iolanda de Fátima Lopes Calvo Tibério
Proteinase inhibitors have been associated with anti-inflammatory and antioxidant activities and may represent a potential therapeutic treatment for emphysema. Our aim was to evaluate the effects of a plant Kunitz proteinase inhibitor, Enterolobium contortisiliquum trypsin inhibitor (EcTI), on several aspects of experimental elastase-induced pulmonary inflammation in mice. C57/Bl6 mice were intratracheally administered elastase (ELA) or saline (SAL) and were treated intraperitoneally with EcTI (ELA-EcTI, SAL-EcTI) on days 1, 14 and 21...
February 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28216055/human-eosinophils-constitutively-express-a-unique-serine-protease-prss33
#5
Sumika Toyama, Naoko Okada, Akio Matsuda, Hideaki Morita, Hirohisa Saito, Takao Fujisawa, Susumu Nakae, Hajime Karasuyama, Kenji Matsumoto
BACKGROUND: Eosinophils play important roles in asthma, especially airway remodeling, by producing various granule proteins, chemical mediators, cytokines, chemokines and proteases. However, protease production by eosinophils is not fully understood. In the present study, we investigated the production of eosinophil-specific proteases/proteinases by transcriptome analysis. METHODS: Human eosinophils and other cells were purified from peripheral blood by density gradient sedimentation and negative/positive selections using immunomagnetic beads...
February 16, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28215221/targeting-chromatin-remodeling-in-inflammation-and-fibrosis
#6
J Yang, B Tian, A R Brasier
Mucosal surfaces of the human body are lined by a contiguous epithelial cell surface that forms a barrier to aerosolized pathogens. Specialized pattern recognition receptors detect the presence of viral pathogens and initiate protective host responses by triggering activation of the nuclear factor κB (NFκB)/RelA transcription factor and formation of a complex with the positive transcription elongation factor (P-TEFb)/cyclin-dependent kinase (CDK)9 and Bromodomain-containing protein 4 (BRD4) epigenetic reader...
2017: Advances in Protein Chemistry and Structural Biology
https://www.readbyqxmd.com/read/28205598/lyn-regulates-mucus-secretion-and-muc5ac-via-the-stat6-signaling-pathway-during-allergic-airway-inflammation
#7
Xiaoyun Wang, Yin Li, Deyu Luo, Xing Wang, Yun Zhang, Zhigang Liu, Nanshan Zhong, Min Wu, Guoping Li
Hypersecretion of mucus is an important component of airway remodeling and contributes to the mucus plugs and airflow obstruction associated with severe asthma phenotypes. Lyn has been shown to down-regulate allergen-induced airway inflammation. However, the role of Lyn in mucin gene expression remains unresolved. In this study, we first demonstrate that Lyn overexpression decreased the mucus hypersecretion and levels of the muc5ac transcript in mice exposed to ovalbumin (OVA). Lyn overexpression also decreased the infiltration of inflammatory cells and the levels of IL-13 and IL-4 in OVA-challenged airways...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28203435/recent-developments-in-the-role-of-reactive-oxygen-species-in-allergic-asthma
#8
REVIEW
Jingjing Qu, Yuanyuan Li, Wen Zhong, Peisong Gao, Chengping Hu
Allergic asthma has a global prevalence, morbidity, and mortality. Many environmental factors, such as pollutants and allergens, are highly relevant to allergic asthma. The most important pathological symptom of allergic asthma is airway inflammation. Accordingly, the unique role of reactive oxygen species (ROS) had been identified as a main reason for this respiratory inflammation. Many studies have shown that inhalation of different allergens can promote ROS generation. Recent studies have demonstrated that several pro-inflammatory mediators are responsible for the development of allergic asthma...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28199160/software-assisted-computed-tomography-quantification-of-airway-remodeling-in-the-normal-aging-process
#9
Sébastien Bommart, Hélène Kovacsik, Isabelle Vachier, Nicolas Molinari, Arnaud Bourdin
No abstract text is available yet for this article.
February 15, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28199156/reply-software-assisted-computed-tomography-quantification-of-airway-remodeling-in-the-normal-aging-process
#10
Carlos H Martinez
No abstract text is available yet for this article.
February 15, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28196638/japanese-guidelines-for-adult-asthma-2017
#11
REVIEW
Masakazu Ichinose, Hisatoshi Sugiura, Hiroyuki Nagase, Masao Yamaguchi, Hiromasa Inoue, Hironori Sagara, Jun Tamaoki, Yuji Tohda, Mitsuru Munakata, Kohei Yamauchi, Ken Ohta
Adult bronchial asthma is characterized by chronic airway inflammation, and presents clinically with variable airway narrowing (wheezes and dyspnea) and cough. Long-standing asthma induces airway remodeling, leading to intractable asthma. The number of patients with asthma has increased; however, the number of patients who die of asthma has decreased (1.2 per 100,000 patients in 2015). The goal of asthma treatment is to enable patients with asthma to attain normal pulmonary function and lead a normal life, without any symptoms...
February 11, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28192616/association-of-ormdl3-with-rhinovirus-induced-endoplasmic-reticulum-stress-and-type-i-interferon-responses-in-human-leukocytes
#12
Yi-Ping Liu, Victoria Rajamanikham, Marissa Baron, Sagar Patel, Sameer K Mathur, Elizabeth A Schwantes, Carole Ober, Daniel J Jackson, James E Gern, Robert F Lemanske, Judith A Smith
BACKGROUND: Children with risk alleles at the 17q21 genetic locus who wheeze during rhinovirus illnesses have a greatly increased likelihood of developing childhood asthma. In mice, overexpression of the 17q21 gene ORMDL3 leads to airway remodeling and hyper-responsiveness. However, the mechanisms by which ORMDL3 predisposes to asthma are unclear. Previous studies have suggested that ORMDL3 induces endoplasmic reticulum (ER) stress and production of the type I interferon (IFN) regulated chemokine CXCL10...
February 13, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28174630/mounier-kuhn-syndrome-a-case-of-tracheal-smooth-muscle-remodeling
#13
Daniel P Cook, Ryan J Adam, Mahmoud H Abou Alaiwa, Michael Eberlein, Julia A Klesney-Tait, Kalpaj R Parekh, David K Meyerholz, David A Stoltz
Mounier-Kuhn syndrome is a rare clinical disorder characterized by tracheobronchial dilation and recurrent lower respiratory tract infections. While the etiology of the disease remains unknown, histopathological analysis of Mounier-Kuhn airways demonstrates that the disease is, in part, characterized by cellular changes in airway smooth muscle.
February 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28174048/the-effects-of-particulate-matter-on-inflammation-of-respiratory-system-differences-between-male-and-female
#14
Kelly Yoshizaki, Jôse Mára Brito, Luiz Fernando Silva, Adriana Lino-Dos-Santos-Franco, Daniela Perroni Frias, Renata Calciolari Rossi E Silva, Luís Fernando Amato-Lourenço, Paulo Hilário Nascimento Saldiva, Iolanda de Fátima Lopes Calvo Tibério, Thais Mauad, Mariangela Macchione
Air pollution is known to exacerbate respiratory diseases and epidemiological studies have shown that women present more chronic respiratory symptoms than man exposed to traffic pollution, however, the reason why is unclear. This study evaluated the inflammatory differences in BALB/c mouse males (n=34) and females (n=111) in three phases of the estrous cycle that were exposed to ambient air (AA) or concentrated ambient particles (CAPs). Tracheal hyperreactivity to methacholine, bronchoalveolar lavage fluid (BALF) and immunohistochemical of airways and lung parenchyma were studied...
February 4, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28167233/taste-and-smell-gpcrs-in-the-lung-evidence-for-a-previously-unrecognized-widespread-chemosensory-system
#15
REVIEW
Steven S An, Stephen B Liggett
Taste and smell receptor expression has been traditionally limited to the tongue and nose. We have identified bitter taste receptors (TAS2Rs) and olfactory receptors (ORs) on human airway smooth muscle (HASM) cells. TAS2Rs signal to PLCβ evoking an increase in [Ca(2+)]i causing membrane hyperpolarization and marked HASM relaxation ascertained by single cell, ex vivo, and in vivo methods. The presence of TAS2Rs in the lung was unexpected, as was the bronchodilatory function which has been shown to be due to signaling within specific microdomains of the cell...
February 4, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28162182/-therapeutic-effects-of-histone-deacetylase-inhibitor-givinostat-on-air-inflammation-and-high-airway-resistance-in-a-murine-asthma-model
#16
X M Su, Y Ren, L F Kong, J Kang
Objective: To investigate the therapeutic effects of givinostat, a histone deacetylase inhibitor (HDACI), on the development of chronic asthma with airway inflammation, airway remodeling and airway hyperresponsiveness (AHR). Methods: BALB/C mice were randomly divided into control group, asthma group, dexamethasone group and givinostat group (n=12 per group). AHR was assessed. Total cell numbers and differential counts, interleukin-4(IL-4), interleukin-5(IL-5) and interferon-γ (IFNγ) levels in the bronchoalveolar lavage fluid (BALF) were measured in the above 4 groups...
February 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28160515/allergic-asthma-an-overview-of-metabolomic-strategies-leading-to-the-identification-of-biomarkers-in-the-field
#17
Alma Villaseñor, Domenico Rosace, David Obeso, Marina Pérez-Gordo, Tomás Chivato, Coral Barbas, Domingo Barber, María M Escribese
Allergic asthma is a prominent disease especially during childhood. Indoor allergens, in general, and particularly house dust mites (HDM) are the most prevalent sensitizers associated with allergic asthma. Available data shows that 65 to 130 million people are mite-sensitized worldwide and as many as 50% of these are asthmatic. In fact, sensitization to HDM in the first years of life can produce devastating effects on pulmonary function leading to asthmatic syndromes that can be fatal. To date, there has been considerable research into the pathological pathways and structural changes associated with allergic asthma...
February 4, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28143620/airway-wall-thickness-on-hrct-scans-decreases-with-age-and-increases-with-smoking
#18
Eef D Telenga, Matthijs Oudkerk, Peter M A van Ooijen, Rozemarijn Vliegenthart, Nick H T Ten Hacken, Dirkje S Postma, Maarten van den Berge
BACKGROUND: To investigate if age, gender and smoking are associated with airway wall thickness (AWT) measured by high resolution computed tomography (HRCT) and if higher AWT is associated with lower levels of pulmonary function in healthy current- and never-smokers with a wide age range. METHODS: HRCT scans were performed in 99 subjects (48 never- and 51 current-smokers, median age 39 years [IQR 22 - 54], 57% males). The AWT at an internal perimeter of 10 mm (AWT Pi10) was calculated as an overall measurement of AWT, based on all measurements throughout the lungs...
February 1, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28140686/role-of-muscarinic-antagonists-in-asthma-therapy
#19
Mario Cazzola, Josuel Ora, Paola Rogliani, Maria Gabriella Matera
Higher parasympathetic tone has been reported in asthmatics. In general, cholinergic contractile tone is increased by airway inflammation associated with asthma. Nevertheless, the role of muscarinic antagonists for the treatment of asthma has not yet been clearly defined. Areas covered: The use of SAMAs and LAMAs in asthma has been examined and discussed according with the published evidence. Particular attention has been given to the large Phase III clinical trial programme designed to evaluate the efficacy and safety of tiotropium Respimat added to standard treatment in adults, adolescents and children with persistent asthma across the spectrum of asthma severity...
January 31, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28138398/comparative-analysis-of-morphological-and-molecular-motifs-in-bronchiolitis-obliterans-and-alveolar-fibroelastosis-after-lung-and-stem-cell-transplantation
#20
Danny Jonigk, Berenice Rath, Paul Borchert, Peter Braubach, Lavinia Maegel, Nicole Izykowski, Gregor Warnecke, Wiebke Sommer, Hans Kreipe, Robert Blach, Adrian Anklamm, Axel Haverich, Matthias Eder, Michael Stadler, Tobias Welte, Jens Gottlieb, Mark Kuehnel, Florian Laenger
Chronic lung allograft dysfunction (CLAD) remains the major obstacle to long-term survival following lung transplantation (LuTx). Morphologically CLAD is defined by obliterative remodelling of the small airways (bronchiolitis obliterans, BO) as well as a more recently described collagenous obliteration of alveoli with elastosis summarised as alveolar fibroelastosis (AFE). Both patterns are not restricted to pulmonary allografts, but have also been reported following haematopoietic stem cell transplantation (HSCT) and radio chemotherapy (RC)...
January 2017: Journal of Pathology. Clinical Research
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