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Airway inflammation

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https://www.readbyqxmd.com/read/28727907/novel-role-of-surfactant-protein-a-in-bacterial-sinusitis
#1
George T Noutsios, Amanda L Willis, Julie G Ledford, Eugene H Chang
BACKGROUND: Chronic rhinosinusitis (CRS) is a common inflammatory disorder of the upper airway characterized by chronic inflammation and significant sinonasal remodeling. CRS is comprised of 2 major subgroups, based on whether polyps are present or absent. In some cases, it is characterized by colonization with opportunistic pathogens such as Pseudomonas aeruginosa (PA), Staphylococcus aureus, and other bacteria. The innate immune system of the sinonasal epithelium is the first line of defense against inhaled pathogens...
July 20, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28722758/asthma-in-the-elderly-and-late-onset-adult-asthma
#2
REVIEW
Ryan M Dunn, Paula J Busse, Michael E Wechsler
Elderly asthmatics are at a higher risk for morbidity and mortality from their asthma than younger patients. There are important age-related physiologic and immunologic changes that complicate the presentation, diagnosis and management of asthma in the aged population. Evidence suggests that elderly asthmatics are more likely to be under-diagnosed and under-treated. Additionally, elderly patients with asthma have highest rates of morbidity and mortality from their disease than younger patients. The underlying airway inflammation of asthma in this age group likely differs from younger patients and is felt to be non-Type 2 mediated...
July 19, 2017: Allergy
https://www.readbyqxmd.com/read/28722020/a-critical-role-of-gas6-axl-signal-in-allergic-airway-responses-during-rsv-vaccine-enhanced-disease
#3
Takehiko Shibata, Manabu Ato
Respiratory syncytial virus (RSV) is a common virus that causes lower respiratory infections across a wide range of ages. A licensed RSV vaccine is not available because vaccination with formalin-inactivated RSV (FI-RSV) and the subsequent RSV infection cause not only insufficient induction of neutralizing antibodies but also severe allergic airway responses, termed FI-RSV vaccine enhanced disease (FI-RSV VED). However, the underlying mechanism has not been identified, although a Th2-biased immune response is known to be a hallmark of this disease...
July 19, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28721202/defining-the-inflammatory-signature-of-human-lung-explant-tissue-in-the-presence-and-absence-of-glucocorticoid
#4
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/28719697/diagnosis-and-management-of-asthma-in-adults-a-review
#5
Jennifer L McCracken, Sreenivas P Veeranki, Bill T Ameredes, William J Calhoun
Importance: Asthma affects about 7.5% of the adult population. Evidence-based diagnosis, monitoring, and treatment can improve functioning and quality of life in adult patients with asthma. Observations: Asthma is a heterogeneous clinical syndrome primarily affecting the lower respiratory tract, characterized by episodic or persistent symptoms of wheezing, dyspnea, and cough. The diagnosis of asthma requires these symptoms and demonstration of reversible airway obstruction using spirometry...
July 18, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28719014/bioavailability-and-tolerability-of-nebulised-dexamethasone-sodium-phosphate-in-adult-horses
#6
A D Haspel, S Giguère, K A Hart, L J Berghaus, J L Davis
BACKGROUND: Nebulisation of the injectable dexamethasone sodium phosphate (DSP) would offer an inexpensive way of delivering a potent corticosteroid directly to the lungs of horses with asthma. However, this approach would be advantageous only if systemic absorption is minimal and if the preservatives present in the formulation do not induce airway inflammation. OBJECTIVE: To investigate the bioavailability of nebulised DSP and to determine whether it induces airway inflammation or hypothalamic-pituitary-adrenal (HPA) axis suppression in healthy adult horses...
July 18, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28718891/mk-reduces-inhaled-chlorine-triggered-ahr-and-airway-inflammation-in-the-mouse
#7
Yoichiro Hamamoto, Satoshi Ano, Benoit Allard, Michael O'Sullivan, Toby K McGovern, James G Martin
BACKGROUND AND PURPOSE: Cysteinyl leukotrienes (CysLTs) are pro-inflammatory lipid mediators that exacerbate disease state in several asthma phenotypes including asthma induced by allergen, virus and exercise. However, the role of CysLTs in irritant-induced airway disease is not well characterized. The purpose of the current study was to investigate the effect of montelukast (MK), a CysLT1R antagonist, on parameters of irritant-induced asthma (IIA) induced by inhalation of chlorine (Cl2 ) in the mouse...
July 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28717640/lung-microbiome-and-host-immune-tone-in-subjects-with-idiopathic-pulmonary-fibrosis-treated-with-inhaled-interferon-%C3%AE
#8
Jing Wang, Melissa Lesko, Michelle H Badri, Bianca C Kapoor, Benjamin G Wu, Yonghua Li, Gerald C Smaldone, Richard Bonneau, Zachary D Kurtz, Rany Condos, Leopoldo N Segal
Therapies targeting inflammation reveal inconsistent results in idiopathic pulmonary fibrosis (IPF). Aerosolised interferon (IFN)-γ has been proposed as a novel therapy. Changes in the host airway microbiome are associated with the inflammatory milieu and may be associated with disease progression. Here, we evaluate whether treatment with aerosolised IFN-γ in IPF impacts either the lower airway microbiome or the host immune phenotype. Patients with IPF who enrolled in an aerosolised IFN-γ trial underwent bronchoscopy at baseline and after 6 months...
July 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28716479/lower-exhaled-nitric-oxide-in-infants-with-cystic-fibrosis-compared-to-healthy-controls
#9
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
#10
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/28715404/an-il-8-transiently-transgenized-mouse-model-for-the-in-vivo-long-term-monitoring-of-inflammatory-responses
#11
Gabriella Bergamini, Fabio Stellari, Angela Sandri, Maria M Lleo, Gaetano Donofrio, Francesca Ruscitti, Federico Boschi, Andrea Sbarbati, Gino Villetti, Paola Melotti, Claudio Sorio
Airway inflammation is often associated with bacterial infections and represents a major determinant of lung disease. The in vivo determination of the pro-inflammatory capabilities of various factors is challenging and requires terminal procedures, such as bronchoalveolar lavage and the removal of lungs for in situ analysis, precluding longitudinal visualization in the same mouse. Here, lung inflammation is induced through the intratracheal instillation of Pseudomonas aeruginosa culture supernatant (SN) in transiently transgenized mice expressing the luciferase reporter gene under the control of a heterologous IL-8 bovine promoter...
July 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28715092/the-origins-of-oral-medicine-in-the-hippocratic-collected-works
#12
REVIEW
Helen Askitopoulou, Vasileia Nyktari, Alexandra Papaioannou, Georgios Stefanakis, Elina Konsolaki
The collected works of Hippocrates describe for the first time in a systematic way a large number of oral diseases, such as ulcers, inflammations, abscesses and tumours from the epiglottis, mouth, tongue, palate, uvula and the sublingual area. Several of these case reports are remarkable for the accurate observation of clinical symptoms and signs, the aetiology, the pathogenesis and their therapeutic approach in relation to prognosis. The Hippocratic authors report cases of 'aphthae' as part of a polysystemic disease, described many centuries later by Behçet and Adamantiades, while they associate features of splenomegaly from endemic malaria with gingivitis ('ulitis')...
July 17, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28714611/mapping-targetable-inflammation-and-outcomes-with-cystic-fibrosis-biomarkers
#13
Olivia Giddings, Charles R Esther
Cystic fibrosis is characterized by an overly exuberant neutrophilic inflammatory response to pathogens and other stimuli that starts very early in disease. The overwhelming nature of this response is a primary cause of remodeling and destruction of the airways, suggesting that anti-inflammatory therapies could be beneficial in CF. However, finding therapies that can effectively reduce the inflammatory response without compromising host defenses remains elusive. New approaches towards mapping inflammatory targets promise to aid in developing novel therapeutic strategies and improve outcomes in individuals with CF...
July 17, 2017: Pediatric Pulmonology
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
#14
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
#15
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/28713373/15-deoxy-delta-12-14-prostaglandin-j2-inhibits-lung-inflammation-and-remodeling-in-distinct-murine-models-of-asthma
#16
Diego S Coutinho, Edna A Anjos-Valotta, Caio V M F do Nascimento, Ana Lucia A Pires, Marcelo H Napimoga, Vinícius F Carvalho, Rafael C Torres, Patrícia M R E Silva, Marco A Martins
15-deoxy-Δ-12,14-prostaglandin J2 (15d-PGJ2) has been described as an anti-inflammatory lipid mediator in several in vitro and in vivo studies, but its effect on allergic pulmonary inflammation remains elusive. The aim of this study was to investigate the therapeutic potential of 15d-PGJ2 based on distinct murine models of allergic asthma triggered by either ovalbumin (OVA) or house dust mite extract (HDM). Characteristics of lung inflammation, airway hyper-reactivity (AHR), mucus exacerbation, and lung remodeling in sensitized A/J mice treated or not with 15d-PGJ2 were assessed...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28709839/fungal-immunomodulatory-protein-fve-could-modulate-airway-remodel-through-by-affect-il17-cytokine
#17
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/28708417/association-of-antibiotics-airway-microbiome-and-inflammation-in-infants-with-cystic-fibrosis
#18
Jessica E Pittman, Kristine M Wylie, Kathryn Akers, Gregory A Storch, Joseph Hatch, Jane Quante, Katherine B Frayman, Nadeene Clarke, Miriam Davis, Stephen M Stick, Graham L Hall, Gregory Montgomery, Sarath Ranganathan, Stephanie D Davis, Thomas W Ferkol
RATIONALE: The underlying defect in the cystic fibrosis (CF) airway leads to defective mucociliary clearance and impaired bacterial killing, resulting in endobronchial infection and inflammation that contributes to progressive lung disease. Little is known about the respiratory microbiota in the early CF airway and its relationship to inflammation. OBJECTIVES: To examine the bacterial microbiota and inflammatory profiles in bronchoalveolar lavage fluid and oropharyngeal secretions in infants with CF...
July 14, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28707978/immunomodulatory-cell-therapy-to-target-cystic-fibrosis-inflammation
#19
Oula Khoury, Christopher Barrios, Victor Ortega, Anthony Atala, Sean V Murphy
Cystic fibrosis (CF) is associated with exaggerated and prolonged inflammation in the lungs, which contributes to lung injury, airway mucus obstruction, bronchiectasis and loss of lung function. This hyper-inflammatory phenotype appears to be caused by an imbalance between the pro- and anti-inflammatory regulatory pathways, with heightened pro-inflammatory stimuli, a decreased counter-regulatory response, and reduced effectiveness of immune cell function and inflammatory resolution. Thus, therapies that can target this inflammatory environment would have a major impact in preventing the progression of lung disease...
July 14, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28706720/endotype-driven-treatment-in-chronic-upper-airway-diseases
#20
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
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