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chronic airway inflammation

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https://www.readbyqxmd.com/read/28721202/defining-the-inflammatory-signature-of-human-lung-explant-tissue-in-the-presence-and-absence-of-glucocorticoid
#1
Tracy L Rimington, Emily Hodge, Charlotte K Billington, Sangita Bhaker, Binaya K C, Iain Kilty, Scott Jelinsky, Ian P Hall, Ian Sayers
BACKGROUND:  Airway inflammation is a feature of many respiratory diseases and there is a need for newer, more effective anti-inflammatory compounds. The aim of this study was to develop an ex vivo human lung explant model which can be used to help study the mechanisms underlying inflammatory responses and which can provide a tool to aid drug discovery for inflammatory respiratory diseases such as asthma and COPD. METHOD:  Parenchymal lung tissue from 6 individual donors was dissected and cultured with two pro-inflammatory stimuli, lipopolysaccharide (LPS) (1 µg/ml) and interleukin-1 beta (IL-1β) (10 ng/ml) in the presence or absence of dexamethasone (1 µM)...
2017: F1000Research
https://www.readbyqxmd.com/read/28716479/lower-exhaled-nitric-oxide-in-infants-with-cystic-fibrosis-compared-to-healthy-controls
#2
Insa Korten, Margot Liechti, Florian Singer, Gaudenz Hafen, Isabelle Rochat, Pinelopi Anagnostopoulou, Dominik Müller-Suter, Jakob Usemann, Alexander Moeller, Urs Frey, Philipp Latzin, Carmen Casaulta
Exhaled nitric oxide (FENO) is a well-known, non-invasive airway biomarker. In patients with Cystic Fibrosis (CF) FENO is decreased. To understand if reduced FENO is primary related to Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) dysfunction or an epiphenomenon of chronic inflammation, we measured FENO in 34 infants with CF prior to clinical symptoms and in 68 healthy controls. FENO was lower in CF compared to controls (p=0.0006) and the effect was more pronounced in CF infants without residual CFTR function (p<0...
July 14, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28716119/stat1-dependent-and-independent-pulmonary-allergic-and-fibrogenic-responses-in-mice-after-exposure-to-tangled-versus-rod-like-multi-walled-carbon-nanotubes
#3
Katherine S Duke, Alexia J Taylor-Just, Mark D Ihrie, Kelly A Shipkowski, Elizabeth A Thompson, Erinn C Dandley, Gregory N Parsons, James C Bonner
BACKGROUND: Pulmonary toxicity of multi-walled carbon nanotubes (MWCNTs) is influenced by physicochemical characteristics and genetic susceptibility. We hypothesized that contrasting rigidities of tangled (t) versus rod-like (r) MWCNTs would result in differing immunologic or fibrogenic responses in mice and that these responses would be exaggerated in transgenic mice lacking the signal transducer and activator of transcription-1 (STAT1), a susceptible mouse model of pulmonary fibrosis...
July 17, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28713772/harnessing-neutrophil-survival-mechanisms-during-chronic-infection-by-pseudomonas-aeruginosa-novel-therapeutic-targets-to-dampen-inflammation-in-cystic-fibrosis
#4
REVIEW
Benoît S Marteyn, Pierre-Régis Burgel, Laurent Meijer, Véronique Witko-Sarsat
More than two decades after cloning the cystic fibrosis transmembrane regulator (CFTR) gene, the defective gene in cystic fibrosis (CF), we still do not understand how dysfunction of this ion channel causes lung disease and the tremendous neutrophil burden which persists within the airways; nor why chronic colonization by Pseudomonas aeruginosa develops in CF patients who are thought to be immunocompetent. It appears that the microenvironment within the lung of CF patients provides favorable conditions for both P...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28713616/baicalein-wogonin-and-scutellaria-baicalensis-ethanol-extract-alleviate-ovalbumin-induced-allergic-airway-inflammation-and-mast-cell-mediated-anaphylactic-shock-by-regulation-of-th1-th2-imbalance-and-histamine-release
#5
Thi Tho Bui, Chun Hua Piao, Chang Ho Song, Chang-Hyun Lee, Hee Soon Shin, Ok Hee Chai
Asthma is characterized by chronic inflammation, goblet cell hyperplasia, the aberrant production of the Th2 cytokines, and eosinophil infiltration into the lungs. In this study, we examined the effects of baicalein, wogonin, and Scutellaria baicalensis ethanol extract on ovalbumin (OVA)-induced asthma by evaluating Th1/Th2 cytokine levels, histopathologic analysis, and compound 48/80-induced systemic anaphylaxis and mast cell activation, focusing on the histamine release from rat peritoneal mast cells. Baicalein, wogonin, and S...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28709839/fungal-immunomodulatory-protein-fve-could-modulate-airway-remodel-through-by-affect-il17-cytokine
#6
Yu-Tzu Lee, Chia-Ta Wu, Hai-Lun Sun, Jiunn-Liang Ko, Ko-Haung Lue
BACKGROUND: Asthma is one of the most common allergic diseases. Our previous studies have reported that FIP-fve in acute allergic mouse model can reduce inflammation, improve the balance of the Th1/Th2 system. However, the effects of reducing airway remodeling on FIP-fve is still unknown. OBJECTIVE: We hypothesized that orally administrated FIP-fve should be able to reduce airway remodeling in chronic allergic models. METHODS: The chronic asthma animal model was established with 6-8 weeks female Balb/c mice...
June 29, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28706720/endotype-driven-treatment-in-chronic-upper-airway-diseases
#7
REVIEW
Glynnis De Greve, Peter W Hellings, Wytske J Fokkens, Benoit Pugin, Brecht Steelant, Sven F Seys
Rhinitis and rhinosinusitis are the two major clinical entities of chronic upper airway disease. Chronic rhinosinusitis (CRS) and allergic rhinitis (AR) affect respectively up to 10 and 30% of the total population, hence being associated with an important socio-economic burden. Different phenotypes of rhinitis and CRS have been described based on symptom severity and duration, atopy status, level of control, comorbidities and presence or absence of nasal polyps in CRS. The underlying pathophysiological mechanisms are diverse, with different, and sometimes overlapping, endotypes being recognized...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/28706536/the-videofluorographic-swallowing-study-in-rheumatologic-diseases-a-comprehensive-review
#8
REVIEW
Ambra Di Piazza, Federica Vernuccio, Massimo Costanzo, Laura Scopelliti, Dario Picone, Federico Midiri, Francesco Salvaggi, Francesco Cupido, Massimo Galia, Sergio Salerno, Antonio Lo Casto, Massimo Midiri, Giuseppe Lo Re, Roberto Lagalla
Autoimmune connective tissue diseases are a heterogeneous group of pathologies that affect about 10% of world population with chronic evolution in 20%-80%. Inflammation in autoimmune diseases may lead to serious damage to other organs including the gastrointestinal tract. Gastrointestinal tract involvement in these patients may also due to both a direct action of antibodies against organs and pharmacological therapies. Dysphagia is one of the most important symptom, and it is caused by failure of the swallowing function and may lead to aspiration pneumonia, malnutrition, dehydration, weight loss, and airway obstruction...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28705588/elevated-uric-acid-and-adenosine-triphosphate-concentrations-in-bronchoalveolar-lavage-fluid-of-eosinophilic-pneumonia
#9
Takehito Kobayashi, Kazuyuki Nakagome, Toru Noguchi, Kiyoko Kobayashi, Yutaka Ueda, Tomoyuki Soma, Kenji Ikebuchi, Hidetomo Nakamoto, Makoto Nagata
BACKGROUND: Recent evidence has suggested that the innate immune response may play a role in the development of eosinophilic airway inflammation. We previously reported that uric acid (UA) and adenosine triphosphate (ATP), two important damage-associated molecular pattern molecules (DAMPs), activate eosinophil functions, suggesting that these molecules may be involved in the development of eosinophilic airway inflammation. The objective of this study was to measure the concentrations of DAMPs including UA and ATP in the bronchoalveolar lavage fluid (BALF) of patients with eosinophilic pneumonia (EP)...
July 10, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28704797/knockout-of-rage-ameliorates-mainstream-cigarette-smoke-induced-airway-inflammation-in-mice
#10
Mei Chen, Tao Wang, Yongchun Shen, Dan Xu, Xiaoou Li, Jing An, Jiajia Dong, Diandian Li, Fuqiang Wen, Lei Chen
BACKGROUND: The receptor for advanced glycation end products (RAGE), a multiligand receptor, has been proved to be implicated in inflammatory responses in chronic obstructive pulmonary disease (COPD). In this study, we investigated the role of RAGE in cigarette smoke (CS)-induced airway inflammation in COPD. METHODS: Wild-type (WT) and RAGE gene knockout (KO) mice were exposed to mainstream CS or room air for 2h twice daily, 6days per week for consecutive 4weeks...
July 10, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28704475/protective-effect-of-galectin-9-in-murine-model-of-lung-emphysema-involvement-of-neutrophil-migration-and-mmp-9-production
#11
Yuko Horio, Hidenori Ichiyasu, Keisuke Kojima, Naoki Saita, Yohei Migiyama, Toyohisa Iriki, Kazuhiko Fujii, Toshiro Niki, Mitsuomi Hirashima, Hirotsugu Kohrogi
PURPOSE: Chronic obstructive pulmonary disease (COPD) is characterized by irreversible airflow obstruction and pulmonary emphysema. Persistent inflammation and remodeling of the lungs and airways result in reduced lung function and a lower quality of life. Galectin (Gal)-9 plays a crucial role as an immune modulator in various diseases. However, its role in the pathogenesis of pulmonary emphysema is unknown. This study investigates whether Gal-9 is involved in pulmonary inflammation and changes in emphysema in a porcine pancreatic elastase (PPE)-induced emphysema model...
2017: PloS One
https://www.readbyqxmd.com/read/28701473/zbtb7a-induction-in-alveolar-macrophages-is-implicated-in-anti-hla-mediated-lung-allograft-rejection
#12
Deepak K Nayak, Fangyu Zhou, Min Xu, Jing Huang, Moriya Tsuji, Jinsheng Yu, Ramsey Hachem, Andrew E Gelman, Ross M Bremner, Michael A Smith, Thalachallour Mohanakumar
Chronic rejection significantly limits long-term success of solid organ transplantation. De novo donor-specific antibodies (DSAs) to mismatched donor human leukocyte antigen after human lung transplantation predispose lung grafts to chronic rejection. We sought to delineate mediators and mechanisms of DSA pathogenesis and to define early inflammatory events that trigger chronic rejection in lung transplant recipients and obliterative airway disease, a correlate of human chronic rejection, in mouse. Induction of transcription factor zinc finger and BTB domain containing protein 7a (Zbtb7a) was an early response critical in the DSA-induced chronic rejection...
July 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28696800/effect-of-nintedanib-on-airway-inflammation-and-remodeling-in-a-murine-chronic-asthma-model
#13
Hwa Young Lee, Jung Hur, In Kyoung Kim, Ji Young Kang, Hyoung Kyu Yoon, Sook Young Lee, Soon Suk Kwon, Young Kyoon Kim, Chin Kook Rhee
INTRODUCTION: Nintedanib is a multi-tyrosine kinase receptor inhibitor recently approved for treatment of idiopathic pulmonary fibrosis. Although angiogenesis is a key process involved in airway structural changes in patients with bronchial asthma, the effect of nintedanib targeting the angiokinase pathway on airway inflammation and remodeling has not been evaluated. METHODS: We used a 3-month ovalbumin (OVA) challenge mouse model of airway remodeling. Nintedanib was orally administrated during the challenge period, and the effects were examined based on the percentage of airway inflammatory cells, airway hyper-reactivity (AHR), peribronchial goblet cell hyperplasia, total lung collagen and smooth muscle area...
July 11, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28696794/the-effects-of-asthma-medications-on-reactive-oxygen-species-production-in-human-monocytes
#14
Ming-Kai Tsai, Yi-Ching Lin, Ming-Yii Huang, Min-Sheng Lee, Chang-Hung Kuo, Po-Lin Kuo, Ching-Hsiung Lin, Chih-Hsing Hung
OBJECTIVE: Asthma is a chronic inflammatory airway disease induced by many environmental factors. The inhalation of allergens and pollutants promote the reactive oxygen species (ROS) production leading to airway inflammation, hyper-responsiveness and remodeling in allergic asthma. The effects of asthma medications on ROS production are unclear. The present study investigated the anti-ROS effects of current asthma medications including inhaled corticosteroid (ICS; budesonide and fluticasone), leukotriene receptor antagonist (LTRA; montelukast), long acting β2 agonists (LABAs; salmeterol and formoterol) and a new extra-LABA (indacaterol)...
July 11, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28695816/research-advances-in-the-role-of-bromodomain-containing-protein-4-in-epithelial-mesenchymal-transition-in-asthma
#15
Yan Zheng, Jun Wang, Qiugen Li
Asthma is a chronic airway disease characterized by airway inflammation and airway remodeling. Chronic airway inflammation can be involved in airway remodeling in asthmatic patients by incuding epithelial-mesenchymal transition (EMT).Bromodomain-containing protein 4 (BRD4) is a key transcriptional regulator in mammals,and many evidences have shown that BRD4 plays a pivotal role in airway remodeling via nuclear factor-κB/RelA signaling pathway. This review summarizes the recent advances in the role of BRD4 in regulating EMT,with an attempt to elucidate the molecular mechanisms of asthma and inform the prevention and control of asthma...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28694492/chronic-lung-inflammation-primes-humoral-immunity-and-augments-antipneumococcal-resistance
#16
Julia D Boehme, Sabine Stegemann-Koniszewski, Andrea Autengruber, Nicole Peters, Josef Wissing, Lothar Jänsch, Andreas Jeron, Dunja Bruder
Airway epithelial cells (AECs) display remarkable plasticity in response to infectious stimuli and their functional adaptations are critical for antimicrobial immunity. However, the roles of AECs and humoral mediators to host defense in non-communicable lung inflammation remain elusive. We dissected pulmonary defense against Streptococcus pneumoniae in hosts with pre-existing inflammatory conditions (SPC-HAxTCR-HA mice). Lung tissue transcriptomics and bronchoalveolar lavage fluid (BALF) proteomics revealed an induction of humoral defense mechanisms in inflamed lungs...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28692348/the-g-allele-of-mmp12-82-a%C3%A2-%C3%A2-g-promoter-polymorphism-as-a-protective-factor-for-copd-in-bulgarian-population
#17
Tanya Tacheva, Dimo Dimov, Elina Aleksandrova, Monika Bialecka, Maya Gulubova, Tatyana Vlaykova
Chronic inflammation and remodelling of the small airways are features related to chronic obstructive pulmonary disease (COPD). In the current study, we aimed to explore the possible role of MMP12 -82 A > G (rs2276109) promoter polymorphism in the development of COPD in a population from Bulgaria (167 patients with COPD and 119 control individuals). The genotype and allele distributions differed significantly between COPD patients and controls (p = .010 and p = .043, respectively, χ(2) test)...
July 10, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28689020/ferulic-acid-supresses-th2-immune-response-and-prevents-remodeling-in-ovalbumin-induced-pulmonary-allergy-associated-with-inhibition-of-epithelial-derived-cytokines
#18
Alessa Sin Singer Brugiolo, Ana Cláudia Carvalho Gouveia, Caio César de Souza Alves, Flávia Márcia de Castro E Silva, Érick Esteves de Oliveira, Ana Paula Ferreira
Asthma is characterized by intermittent airway obstruction and chronic inflammation, orchestrated primarily by Th2 cytokines. There is a strong rationale for developing new asthma therapies, since current treatment protocols present side effects and may not be effective in cases of difficult-to-control asthma. The purpose of this study was to evaluate the effect of ferulic acid, a phenolic acid commonly present in plants, in the ovalbumin-induced pulmonary allergy murine model. METHODS: BALB/c mice were sensitized and challenged with ovalbumin, and treatments were provided by gavage...
July 5, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28686173/comparison-of-fractional-exhaled-nitric-oxide-levels-in-chronic-obstructive-pulmonary-disease-bronchial-asthma-and-healthy-subjects-of-nepal
#19
Sanjeet Krishna Shrestha, Sanjeev Shrestha, Lucky Sharma, Subash Pant, Arpana Neopane
INTRODUCTION Fractional exhaled nitric oxide levels in exhaled breath can indicate on-going eosinophilic airway inflammation, specifically in asthma. But, its utility is being explored for airway centric inflammations including chronic obstructive pulmonary disease. Normal levels of fractional exhaled nitric oxide (FENO50) have been defined in different studies but not in Nepal. This study compares fractional exhaled nitric oxide levels in all three groups: normal, asthma and chronic obstructive pulmonary disease...
July 7, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28684234/roflumilast-treatment-inhibits-lung-carcinogenesis-in-benzo-a-pyrene-induced-murine-lung-cancer-model
#20
Chang Dong Yeo, Young Ae Kim, Hwa Young Lee, Jin Woo Kim, Seung Joon Kim, Sang Haak Lee, Young Kyoon Kim
Roflumilast, a potent and selective inhibitor of phosphodiesterase-4 (PDE4), has been used in treatment of COPD. PDE4 inhibitor is associated with inhibition of chronic airway inflammation, oxidative stress, and mesenchymal markers in B(a)P-induced lung tumors. The aim of this study was to assess whether roflumilast alone or added to inhaled budesonide might have dose-dependent inhibition on lung carcinogenesis induced by carcinogen B(a)P in mice. Female A/J mice were given a single dose of benzo(a)pyrene. Administration of roflumilast (1mg/kg or 5mg/kg) via oral gavage and aerosolized budesonide (2...
July 3, 2017: European Journal of Pharmacology
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