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https://www.readbyqxmd.com/read/29160801/the-protective-effects-of-astaxanthin-on-the-ova-induced-asthma-mice-model
#1
Yun-Ho Hwang, Seong-Gyeol Hong, Seul-Ki Mun, Su-Jin Kim, Sung-Ju Lee, Jong-Jin Kim, Kyung-Yun Kang, Sung-Tae Yee
Although astaxanthin has a variety of biological activities such as anti-oxidant effects, inhibitory effects on skin deterioration and anti-inflammatory effects, its effect on asthma has not been studied. In this paper, the inhibitory effect of astaxanthin on airway inflammation in a mouse model of ovalbumin (OVA)-induced asthma was investigated. We evaluated the number of total cells, Th1/2 mediated inflammatory cytokines in bronchoalveolar lavage fluid (BALF) and airway hyperresponsiveness as well as histological structure...
November 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29158154/tiotropium-inhibits-mucin-production-stimulated-by-neutrophil-elastase-but-not-by-il-13
#2
Kosaku Komiya, Shuichi Kawano, Isao Suzaki, Tomohiro Akaba, Jun-Ichi Kadota, Bruce K Rubin
Tiotropium, a muscarinic antagonist, is approved for the treatment of chronic obstructive pulmonary disease and poorly controlled asthma. Because mucus hypersecretion is characteristic of both of these diseases, and muscarinic agonists stimulate mucus secretion, we hypothesized that tiotropium would attenuate airway MUC5AC expression. We grew normal human bronchial epithelial (NHBE) cells to a goblet cell phenotype with 1 or 5 ng/mL of IL-13 and exposed these cells to 10 nM tiotropium or excipient for the full 14 days...
November 17, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29154907/an-integrated-mathematical-epithelial-cell-model-for-airway-surface-liquid-regulation-by-mechanical-forces
#3
Dan Wu, Richard C Boucher, Brian Button, Timothy Elston, Ching-Long Lin
A robust method based on reverse engineering was utilized to construct the ion-channel conductance functions for airway epithelial sodium channels (ENaC), the cystic fibrosis transmembrane conductance regulator (CFTR), and calcium-activated chloride channels (CaCC). The ion-channel conductance models for both normal (NL) and cystic fibrosis (CF) airway epithelia were developed and then coupled to an adenosine triphosphate (ATP) metabolism model and a fluid transport model (collectively called the integrated cell model) to investigate airway surface liquid (ASL) volume regulation and hence mucus concentration, by mechanical forces in NL and CF human airways...
November 15, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29140397/progress-in-the-understanding-of-the-pathology-of-allergic-asthma-and-the-potential-of-fruit-proanthocyanidins-as-modulators-of-airway-inflammation
#4
REVIEW
Sara L Coleman, Odette M Shaw
Allergic asthma is a chronic inflammatory lung disease characterized by sensitization of the airways, and the development of immunoglobulin E antibodies, to benign antigens. The established pathophysiology of asthma includes recurrent lung epithelial inflammation, excessive mucus production, bronchial smooth muscle hyperreactivity, and chronic lung tissue remodeling, resulting in reversible airflow restriction. Immune cells, including eosinophils and the recently characterized type 2 innate lymphoid cells, infiltrate into the lung tissue as part of the inflammatory response in allergic asthma...
November 15, 2017: Food & Function
https://www.readbyqxmd.com/read/29132961/title-experimental-asthma-persists-in-il33-receptor-knockout-mice-due-to-the-emergence-of-a-tslp-driven-il9-and-il13-ilc2-subpopulations
#5
Mukesh Verma, Sucai Liu, Lidia Michalec, Anand Sripada, Magdalena M Gorska, Rafeul Alam
BACKGROUND: IL33 plays an important role in development of experimental asthma. OBJECTIVE: To study the role of the IL33 receptor (ST2) in persistence of asthma in a mouse model. METHODS: We studied allergen-induced experimental asthma in ST2 knockout (KO) and wild-type control mice. We measured airway hyperresponsiveness (AHR) by flexivent, inflammatory indices by ELISA, histology and real-time PCR, and ILC2s in lung single cell preparations by flow cytometry...
November 10, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29132121/the-therapeutic-potential-of-cftr-modulators-for-copd-and-other-airway-diseases
#6
REVIEW
George M Solomon, Lianwu Fu, Steven M Rowe, James F Collawn
Airways diseases, especially chronic obstructive pulmonary disease (COPD) and asthma, are common causes of morbidity and mortality worldwide. There is an ongoing unmet need for novel and effective therapies. There is an established pathophysiological link and phenotypic similarity between the chronic bronchitis phenotype of COPD and cystic fibrosis (CF). New evidence suggests that CFTR dysfunction may play a role in other common airways diseases such as COPD, non-atopic asthma and non-CF bronchiectasis. Newly approved and investigational drugs that target both mutant and wild-type CFTR channels have provided a new treatment opportunity addressing the mucus defect in pulmonary diseases that share the same pathophysiology with CF...
November 10, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29129801/activating-prostaglandin-e2-receptor-subtype-ep4-increases-secreted-mucin-from-airway-goblet-cells
#7
Tomohiro Akaba, Kosaku Komiya, Isao Suzaki, Yuji Kozaki, Jun Tamaoki, Bruce K Rubin
Prostaglandin E2 (PGE2) is a ligand of the E-type prostanoid receptors, EP1-4. PGE2 secretion is increased in the airways of patients with asthma by secretory phospholipases A2, which also increases MUC5AC mucin in goblet cells. We hypothesized that PGE2 would also increase MUC5AC mRNA and secreted protein through specific EP receptor activation. We sought to assess the effect of specific EP receptor activation on MUC5AC secretion from ciliated-enriched cells or goblet-enriched cells induced by IL-13. We develop an enriched goblet cell epithelium by growing normal human bronchial epithelial cells at air liquid interface for 14 days in the presence of IL-13...
November 9, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29111843/experience-of-using-non-invasive-ventilation-as-an-adjunct-to-airway-clearance-techniques-in-adults-with-cystic-fibrosis-a-qualitative-study
#8
Maria Cecilia Rodriguez Hortal, Anna Hedborg, Gabriele Biguet, Malin Nygren-Bonnier
BACKGROUND: Adults with cystic fibrosis (CF) suffer from abnormally thick mucus that is difficult to clear from the airways. Different airway clearance techniques (ACTs) can be used to clear secretions and non-invasive ventilation (NIV) can be used as an adjunct to these techniques. ACTs are ideally introduced at the time of diagnosis and thereafter modified throughout the patient's lifespan and disease progress. PURPOSE: The research aim was to describe adult patients' views and experiences with using NIV as an adjunct to ACT...
November 7, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29111673/nano-into-micro-formulations-of-tobramycin-for-the-treatment-of-pseudomonas-aeruginosa-infections-in-cystic-fibrosis
#9
Barbara Porsio, Maria Grazia Cusimano, Domenico Schillaci, Emanuela Fabiola Craparo, Gaetano Giammona, Gennara Cavallaro
Here, nano into micro formulations (NiMs) of tobramycin for the treatment of Pseudomonas aeruginosa airway infections in cystic fibrosis (CF) are described. NiMs were produced by spray drying a solution containing polymers or sugars and a nanometric Polyanion-Tobramcyin Complex (PTC), able to achieve a prolonged antibiotic release. NiMs properties were compared to TOBI®Podhaler®(Novartis), the only one commercially available dry powder inhalatory formulation based on porous microparticles. Produced NiMs showed adequate characteristics for pulmonary administration, as spherical shape, micrometric size and high cytocompatibility towards human bronchial epithelial cells...
November 7, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29102290/ion-channels-as-targets-to-treat-cystic-fibrosis-lung-disease
#10
S Lorraine Martin, Vinciane Saint-Criq, Tzyh-Chang Hwang, László Csanády
Lung health relies on effective mucociliary clearance and innate immune defence mechanisms. In cystic fibrosis (CF), an imbalance in ion transport due to an absence of chloride ion secretion, caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) and a concomitant sodium hyperabsorption, caused by dyregulation of the epithelial sodium channel (ENaC), results in mucus stasis which predisposes the lungs to cycles of chronic infection and inflammation leading to lung function decline...
October 25, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/29099608/mucin-production-and-hydration-responses-to-mucopurulent-materials-in-normal-vs-cf-airway-epithelia
#11
Lubna H Abdullah, Raymond Coakley, Megan J Webster, Yunxiang Zhu, Robert Tarran, Giorgia Radicioni, Mehmet Kesimer, Richard C Boucher, C William Davis, Carla M P Ribeiro
RATIONALE: Cystic fibrosis (CF) airways disease produces a muco-obstructive lung phenotype characterized by airways mucus plugging, epithelial mucous cell metaplasia/hyperplasia, chronic infection and inflammation. Simultaneous biochemical and functional in vivo studies of mucin synthesis and secretion from CF airways are not available. In vitro translational models may quantitate differential CF vs. normal mucin and fluid secretory responses to infectious/inflammatory stimuli. OBJECTIVES: We tested the hypothesis that CF airways exhibit defective epithelial fluid, but not mucin, secretory responses to bacterial/inflammatory host products...
November 3, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29094511/a-comparison-of-nanoparticullate-cpg-immunotherapy-with-and-without-allergens-in-spontaneously-equine-asthma-affected-horses-an-animal-model
#12
John Klier, Sabine Geis, Jeanette Steuer, Katharina Geh, Sven Reese, Sebastian Fuchs, Ralf S Mueller, Gerhard Winter, Heidrun Gehlen
INTRODUCTION: New therapeutic strategies to modulate the immune response of human and equine allergic asthma are still under extensive investigation. Immunomodulating agents stimulating T-regulatory cells offer new treatment options beyond conventional symptomatic treatment or specific immunotherapy for human and equine allergic airway diseases, with the goal of a homoeostatic T-helper cell balance. The aim of this study was to evaluate the effects of a nebulized gelatin nanoparticle-CpG formulation (CpG-GNP) with and without specific allergens for the treatment of spontaneous allergic equine asthma as a model for human asthma...
November 1, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29091392/thiol-benzo-triazolo-quinazolinone-covalently-modifies-alg44-to-inhibit-c-di-gmp-binding-and-reduces-alginate-production-by-pseudomonas-aeruginosa
#13
Eric Zhou, Anna B Seminara, Soo-Kyoung Kim, Cherisse L Hall, Yan Wang, Vincent T Lee
Pseudomonas aeruginosa is an opportunistic pathogen that affects a large proportion of cystic fibrosis (CF) patients. CF patients have dehydrated mucus within the airways that leads to the inability of the mucociliary escalator to expel inhaled microbes. Once inhaled, P. aeruginosa can persist in the lungs of the CF patients for the remainder of their lives. During this chronic infection, a phenomenon called mucoid conversion can occur in which P. aeruginosa can mutate and inactivate their mucA gene. As a consequence, transcription of the alg operon is highly expressed leading to the copious secretion of the alginate exopolysaccharide, which is associated with decreased lung function and increased CF patient morbidity and mortality...
November 1, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29082098/automated-segmentation-and-quantification-of-airway-mucus-with-endobronchial-optical-coherence-tomography
#14
David C Adams, Hamid Pahlevaninezhad, Margit V Szabari, Josalyn L Cho, Daniel L Hamilos, Mehmet Kesimer, Richard C Boucher, Andrew D Luster, Benjamin D Medoff, Melissa J Suter
We propose a novel suite of algorithms for automatically segmenting the airway lumen and mucus in endobronchial optical coherence tomography (OCT) data sets, as well as a novel approach for quantifying the contents of the mucus. Mucus and lumen were segmented using a robust, multi-stage algorithm that requires only minimal input regarding sheath geometry. The algorithm performance was highly accurate in a wide range of airway and noise conditions. Mucus was classified using mean backscattering intensity and grey level co-occurrence matrix (GLCM) statistics...
October 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/29081932/free-aspire-a-new-device-for-the-management-of-airways-clearance-in-patient-with-ineffective-cough
#15
Luca Bertelli, Giovanni Di Nardo, Salvatore Cazzato, Giampaolo Ricci, Andrea Pession
A 3-year-old girl with Spinal Muscular Atrophy type I presented with a right pneumonia. On physical examination pulmonary auscultation revealed an asymmetry of breath sounds between the 2 hemithoraces, owing to decreased breath sounds in the right hemithorax. Blood tests were normal. The initial working diagnosis was a suspected area of mucus accumulation. A treatment with Free Aspire was started. Within a few days, the girl was discharged with a normal physical examination and X-ray study result. Spinal Muscular Atrophy is a rare neuromuscular disorder characterized by loss of motor neurons and progressive muscle wasting...
October 6, 2017: Pediatric Reports
https://www.readbyqxmd.com/read/29078687/endobronchial-thermoplasty-for-asthma
#16
REVIEW
Felix Zamora, Roy Cho, Madhuri Rao, Heidi Gibson, H Erhan Dincer
Asthma is an incurable chronic disease affecting approximately 24 million people in the United States. The hallmark features of asthma are reversible airflow obstruction, airway hyperresponsiveness, airway inflammation, bronchoconstriction, and excessive mucus secretion. Clinical symptoms include episodic or persistent breathlessness, wheezing, cough, or chest tightness/pressure. Forty-five percent of asthmatics continue to have yearly exacerbations and the disease is responsible for approximately 3,600 annual deaths...
2017: J Vis Surg
https://www.readbyqxmd.com/read/29074490/lung-disease-phenotypes-caused-by-over-expression-of-combinations-of-alpha-beta-and-gamma-subunits-of-the-epithelial-sodium-channel-in-mouse-airways
#17
Alessandra Livraghi-Butrico, Kristen J Wilkinson, Allison S Volmer, Rodney C Gilmore, Troy D Rogers, Ray A Caldwell, Kimberlie A Burns, Charles R Esther, Marcus A Mall, Richard C Boucher, Wanda K O'Neal, Barbara R Grubb
The epithelial Na+ channel (ENaC) regulates airway surface hydration. In mouse airways, ENaC is composed of three subunits, alpha (α), beta (β), and gamma (γ), which are differentially expressed (α > β > γ). Airway-targeted overexpression of the β subunit results in Na+ hyperabsorption causing airway surface dehydration, hyperconcentrated mucus with delayed clearance, lung inflammation, and perinatal mortality. Notably, mice overexpressing the α or γ subunit do not exhibit airway Na+ hyperabsorption nor lung pathology...
October 26, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29073215/toxoplasma-gondii-serine-protease-inhibitor-1-a-new-adjuvant-candidate-for-asthma-therapy
#18
Ariadna S Soto, Ignacio M Fenoy, Vanesa R Sanchez, Florencia March, Matías D Perrone Sibilia, María de Los Angeles Aldirico, Mariano S Picchio, Nadia Arcon, Patricio L Acosta, Fernando P Polack, Valentina Martin, Alejandra Goldman
Serine-proteases are important players in the pathogenesis of asthma, promoting inflammation and tissue remodeling. It's also known that many serine protease inhibitors display immunomodulatory properties. TgPI-1 is a Toxoplasma gondii protein that exhibits broad spectrum inhibitory activity against serine proteases. In view of the increased prevalence of atopic disorders and the need to develop new treatment strategies we sought to investigate the potential of TgPI-1 for treating respiratory allergies. For this purpose, we developed a therapeutic experimental model...
2017: PloS One
https://www.readbyqxmd.com/read/29073113/%C3%AE-2-adrenoceptor-signaling-in-airway-epithelial-cells-promotes-eosinophilic-inflammation-mucous-metaplasia-and-airway-contractility
#19
Long P Nguyen, Nour A Al-Sawalha, Sergio Parra, Indira Pokkunuri, Ozozoma Omoluabi, Adedoyin A Okulate, Elizabeth Windham Li, Matthew Hazen, Jose M Gonzalez-Granado, Craig J Daly, John C McGrath, Michael J Tuvim, Brian J Knoll, Burton F Dickey, Richard A Bond
The mostly widely used bronchodilators in asthma therapy are β2-adrenoreceptor (β2AR) agonists, but their chronic use causes paradoxical adverse effects. We have previously determined that β2AR activation is required for expression of the asthma phenotype in mice, but the cell types involved are unknown. We now demonstrate that β2AR signaling in the airway epithelium is sufficient to mediate key features of the asthmatic responses to IL-13 in murine models. Our data show that inhibition of β2AR signaling with an aerosolized antagonist attenuates airway hyperresponsiveness (AHR), eosinophilic inflammation, and mucus-production responses to IL-13, whereas treatment with an aerosolized agonist worsens these phenotypes, suggesting that β2AR signaling on resident lung cells modulates the asthma phenotype...
October 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29070458/-receptor-for-advanced-glycation-end-products-upregulates-muc5ac-expression-and-promotes-mucus-overproduction-in-mice-with-toluene-diisocyanate-induced-asthma
#20
Jing Xiong, Wen-Qu Zhao, Guo-Hua Huang, Li-Hong Yao, Hang-Ming Dong, Chang-Hui Yu, Hai-Jin Zhao, Shao-Xi Cai
OBJECTIVE: To explore the role of the receptor for advanced glycation end products (RAGE) in regulating the expression of MUC5AC and mucus production in a mouse model of toluene diisocyanate (TDI)?induced asthma. METHODS: BALB/c mice were randomly divided into control group, vehicle (AOO) group, TDI?induced asthma group and RAGE inhibitor (FPS?ZM1) group. PAS staining, Western blotting, and immunohistochemistry were used to analyze the changes in mucus production and MUC5AC expression in the airway of the mice, and the expression of p?ERK was detected with Western blotting...
October 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
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