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Reactive airway disease

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https://www.readbyqxmd.com/read/28286467/smoking-exposure-loss-of-forced-expiratory-volume-in-one-second-and-the-risk-of-lung-cancer-among-patients-with-malignant-disease-who-present-with-cardiac-or-pulmonary-symptoms-a-cross-sectional-study
#1
Siegfried Wieshammer, Jens Dreyhaupt
BACKGROUND: Smokers with airway obstruction are at a higher risk of lung cancer than smokers without airway obstruction. Inflammation plays a key role in lung carcinogenesis. This single-center study prospectively assessed (i) the relationship between smoking exposure and the loss of forced expiratory volume in 1 s (FEV1) in determining lung cancer risk and (ii) the effect of lung cancer on systemic inflammation. METHODS: The study group comprised 475 consecutively enrolled patients with cancer who presented with pulmonary or cardiac symptoms...
2017: Tobacco Induced Diseases
https://www.readbyqxmd.com/read/28275185/broadly-reactive-anti-rsv-g-antibodies-from-exposed-individuals-effectively-inhibit-infection-of-primary-airway-epithelial-cells
#2
B Cortjens, E Yasuda, X Yu, K Wagner, Y B Claassen, A Q Bakker, J B M van Woensel, T Beaumont
Respiratory syncytial virus (RSV) causes severe respiratory disease in young children. Antibodies specific for the RSV prefusion F protein have guided RSV vaccine research and in human serum these antibodies attribute to >90% of the neutralization response, however detailed insight in the composition of the human B cell repertoire against RSV is still largely unknown. In order to study the B cell repertoire of 3 healthy donors for specificity against RSV, CD27(+) memory B cells were isolated and immortalized using BCL6 and Bcl-xL...
March 8, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28273344/oxidative-stress-serves-as-a-key-checkpoint-for-il-33-release-by-airway-epithelium
#3
Masaru Uchida, Erik L Anderson, Diane L Squillace, Nandadevi Patil, Peter J Maniak, Koji Iijima, Hirohito Kita, Scott M O'Grady
BACKGROUND: Interleukin (IL)-33 is implicated in the pathophysiology of asthma and allergic diseases. However, our knowledge is limited regarding how IL-33 release is controlled. The transcription factor nuclear factor-erythroid-2-related factor 2 (Nrf2) plays a key role in antioxidant response regulation. OBJECTIVE: The goal of this project was to investigate the role of cellular oxidative stress in controlling IL-33 release in airway epithelium. METHODS: Complementary approaches were used that included human bronchial epithelial cells and mouse models of airway type-2 immunity that were exposed to fungus Alternaria extract...
March 8, 2017: Allergy
https://www.readbyqxmd.com/read/28256060/evaluation-of-oxidative-stress-and-antioxidant-status-in-chronic-obstructive-pulmonary-disease
#4
S Singh, S K Verma, S Kumar, M K Ahmad, A Nischal, S K Singh, R K Dixit
Chronic obstructive pulmonary disease (COPD) is a common respiratory condition involving the airways and characterized by airflow limitation. Gaseous and noxious particles play an important role in this process. Antioxidants are the substances that may protect cells from the damage caused by unstable molecules known as free radicals. The increased oxidative stress in patients with COPD is the result of an increased burden of inhaled oxidants, as well as increased amounts of reactive oxygen species (ROS) generated by various inflammatory, immune and epithelial cells of the airways...
February 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28231574/biomarkers-in-allergic-airway-disease-simply-complex
#5
Adam M Chaker, Ulrich M Zissler, Martin Wagenmann, Carsten Schmidt-Weber
Clinical diagnoses of allergic airway disease need confirmation of a relevant sensitization to allergens. Serum-based component-resolved diagnosis has become increasingly popular and allows the precise assessment of specific IgE to molecular allergens. Molecular allergen diagnosis has improved our understanding of disease phenotypes in allergic patients, including cross-reactive patterns and food allergy. Beyond sensitization profiles, characterization of the (endo-)type and severity of a local allergic disease is useful for targeted therapy with biologics in advanced allergic airway disease...
2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/28212463/efficacy-and-tolerability-of-an-inhaled-selective-glucocorticoid-receptor-modulator-azd5423-in-copd-patients-phase-ii-study-results
#6
Piotr Kuna, Magnus Aurivillius, Carin Jorup, Susanne Prothon, Ziad Taib, Staffan Edsbäcker
AZD5423 is a novel, inhaled, selective glucocorticoid receptor modulator (SGRM), which in an allergen challenge model in asthmatics improved lung function and airway hyper-reactivity. In the current trial, AZD5423 was for the first time tested in patients with chronic obstructive pulmonary disease (COPD). In this double-blind, randomised and parallel group study, we examined airway and systemic effects of two doses of AZD5423, inhaled via Turbuhaler for 12 weeks, in 353 symptomatic COPD patients (average pre-bronchodilator forced expiratory volume in one second (FEV1) at screening was 50-52% of predicted normal)...
February 17, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28211571/inhibitory-effects-of-a-standardized-extract-of-justicia-pectoralis-in-an-experimental-rat-model-of-airway-hyper-responsiveness
#7
Carlos T M Moura, Francisco J Batista-Lima, Teresinha S Brito, Alfredo A V Silva, Luan C Ferreira, Cássia R Roque, Karoline S Aragão, Alexandre Havt, Francisco N Fonseca, Luzia K A M Leal, Pedro J C Magalhães
OBJECTIVE: Justicia pectoralis is a plant useful for the treatment of respiratory diseases. Here, we studied the antiasthmatic properties of a standardized extract of J. pectoralis (Jp). METHODS: Ovalbumin (OVA)-sensitized rats were actively challenged with saline or OVA to study airway hyper-responsiveness after oral treatment with saline or Jp. The ability of Jp to inhibit hyper-reactivity was evaluated in isolated trachea mounted in isolated organ bath chamber...
February 17, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28202112/-risk-factors-for-poor-prognosis-in-children-with-severe-adenovirus-pneumonia
#8
Miao Huang, Rong Luo, Zhou Fu
OBJECTIVE: To investigate the risk factors for poor prognosis of severe adenovirus pneumonia (SAP) in children. METHODS: The clinical data of 189 children with SAP were retrospectively analyzed. Univariate logistic regression analysis was performed to assess the risk factors for poor prognosis. RESULTS: The univariate logistic regression analysis showed that the patients with hemoglobin <90 g/L, plasma albumin <30 g/L, C-reactive protein >30 mg/L, procalcitonin >10 ng/mL, alanine aminotransferase >100 U/L, or aspartate aminotransferase >100 U/L had poor prognosis (P<0...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28199134/genetic-control-of-fatty-acid-%C3%AE-oxidation-in-chronic-obstructive-pulmonary-disease
#9
Zhiqiang Jiang, Nelson H Knudsen, Gang Wang, Weiliang Qiu, Zun Zar Chi Naing, Yan Bai, Xingbin Ai, Chih-Hao Lee, Xiaobo Zhou
Bioenergetics homeostasis is important for cells to sustain normal functions and defend against injury. Genetics controls on bioenergetics homeostasis, especially lipid metabolism remain poorly understood in chronic obstructive pulmonary diseases (COPD), the third leading cause of death in the world. Additionally, biological function of most susceptible genes identified from genome-wide association studies (GWAS) in COPD remains unclear. Here, we aim to address 1) how fatty acid oxidation, specifically β-oxidation (FAO), a key lipid metabolism pathway that provides energy to cells, contributes to cigarette smoke (CS)-induced COPD; and 2) whether and how FAM13A (family with sequence similarity 13 member A), a well-replicated COPD GWAS gene, modulates FAO pathway...
February 15, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28186686/combined-bone-marrow-derived-mesenchymal-stromal-cell-therapy-and-one-way-endobronchial-valve-placement-in-patients-with-pulmonary-emphysema-a-phase-i-clinical-trial
#10
Hugo Goulart de Oliveira, Fernanda Ferreira Cruz, Mariana Alves Antunes, Amarilio Vieira de Macedo Neto, Guilherme Augusto Oliveira, Fabio Munhoz Svartman, Tamara Borgonovo, Carmen Lucia Kuniyoshi Rebelatto, Daniel J Weiss, Paulo Roberto Slud Brofman, Marcelo Marcos Morales, José Roberto Lapa E Silva, Patricia Rieken Macedo Rocco
One-way endobronchial valves (EBV) insertion to reduce pulmonary air trapping has been used as therapy for chronic obstructive pulmonary disease (COPD) patients. However, local inflammation may result and can contribute to worsening of clinical status in these patients. We hypothesized that combined EBV insertion and intrabronchial administration of mesenchymal stromal cells (MSCs) would decrease the inflammatory process, thus mitigating EBV complications in severe COPD patients. This initial study sought to investigate the safety of this approach...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28128967/impact-of-mandibular-advancement-therapy-on-endothelial-function-in-severe-obstructive-sleep-apnea
#11
Frédéric Gagnadoux, Jean-Louis Pépin, Bruno Vielle, Vanessa Bironneau, Frédérique Chouet-Girard, Sandrine Launois, Nicole Meslier, Jean-Claude Meurice, Xuan-Lan Nguyen, Audrey Paris, Pascaline Priou, Renaud Tamisier, Wojciech Trzepizur, François Goupil, Bernard Fleury
RATIONALE: Endothelial dysfunction, a major predictor of late cardiovascular events, is linked to the severity of obstructive sleep apnea (OSA). OBJECTIVES: To determine whether treatment with mandibular advancement device, the main alternative to continuous positive airway pressure, improves endothelial function in patients with severe OSA. METHODS: In this trial, we randomized patients with severe OSA and no overt cardiovascular disease to receive 2 months of treatment with either effective mandibular advancement device or a sham device...
January 27, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28126503/-pathophysiology-of-obstructive-sleep-apnea-syndrome-and-its-cardiometabolic-consequences
#12
Marie Destors, Renaud Tamisier, Louis-Marie Galerneau, Patrick Lévy, Jean-Louis Pepin
Obstructive sleep apnoea syndrome (OSAS) is characterized by recurrent partial or complete pharyngeal collapses during sleep. The pathophysiology of OSAS is complex and multifactorial. Factors influencing upper airway patency include a reduction in upper airway dimensions that can result from both anatomical and functional alterations (obesity, fluid shift or maxillo-facial structural changes), and increased pharyngeal collapsibility owing to reduced neuromuscular compensation and lack of the pharyngeal protective reflex during sleep...
January 23, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28124966/-a-case-of-bronchiolitis-obliterans-secondary-to-human-metapneumovirus-bronchiolitis
#13
Osman Yeşilbaş, Esra Şevketoğlu, Hasan Serdar Kıhtır, Mey Talip Petmezci, Elif Bato, Seda Balkaya, Nevin Hatipoğlu, Mert Ahmet Kuşkucu, Figen Palabıyık, Erkan Çakır
Human metapneumovirus (hMPV), formerly classified in Paramyxoviridae family is now moved into Pneumoviridae, which was described as a novel family. It causes upper and lower respiratory tract infections (LRTIs) usually in children younger than five years old. The recent epidemiological studies indicated that hMPV is the second most frequently detected virus in LRTIs of young children, following the respiratory syncytial virus (RSV). Bronchiolitis obliterans (BO) is a chronic obstructive lung disease characterized by fibrosis of the distal respiratory airways...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28102118/myeloid-cells-in-asthma
#14
Bart N Lambrecht, Emma K Persson, Hamida Hammad
Asthma is a heterogeneous chronic inflammatory disorder of the airways, and not surprisingly, many myeloid cells play a crucial role in pathogenesis. Antigen-presenting dendritic cells are the first to recognize the allergens, pollutants, and viruses that are implicated in asthma pathogenesis, and subsequently initiate the adaptive immune response by migrating to lymph nodes. Eosinophils are the hallmark of type 2 inflammation, releasing toxic compounds in the airways and contributing to airway remodeling. Mast cells and basophils control both the early- and late-phase allergic response and contribute to alterations in smooth muscle reactivity...
January 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28093362/hypoxia-inducible-factor-1%C3%AE-inhibition-modulates-airway-hyperresponsiveness-and-nitric-oxide-levels-in-a-balb-c-mouse-model-of-asthma
#15
Carola Dewitz, Elisa McEachern, Stephanie Shin, Kathryn Akong, Dale G Nagle, David H Broide, Praveen Akuthota, Laura E Crotty Alexander
Hypoxia-inducible factor (HIF)-1α is a master regulator of inflammation and is upregulated in alveolar macrophages and lung parenchyma in asthma. HIF-1α regulates select pathways in allergic inflammation, and thus may drive particular asthma phenotypes. This work examines the role of pharmacologic HIF-1α inhibition in allergic inflammatory airway disease (AIAD) pathogenesis in BALB/c mice, which develop an airway hyperresponsiveness (AHR) asthma phenotype. Systemic treatment with HIF-1α antagonist YC-1 suppressed the increase in HIF-1α expression seen in control AIAD mice...
January 14, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28063042/murine-models-of-allergic-asthma
#16
Eline Haspeslagh, Nincy Debeuf, Hamida Hammad, Bart N Lambrecht
Allergic asthma is a heterogeneous inflammatory lung disease affecting millions of people worldwide and with a steadily increasing incidence. Mouse models have been of utmost importance in uncovering key inflammatory cell types, cytokines, and pathways in the development and maintenance of allergic asthma. Historically, the mainstay in experimental asthma research was sensitizing rodents to the model protein antigen ovalbumin (OVA) with the pro-Th2 adjuvant aluminum hydroxide, followed by repetitive OVA exposures to the airways to initiate a Th2-skewed adaptive immune response leading to eosinophilic airway inflammation and airway hyperreactivity (AHR)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28054460/clinical-importance-of-cross-sectional-area-of-intercostal-muscles-in-patients-with-chronic-obstructive-pulmonary-disease
#17
Sunmi Ju, Seung Jun Lee, Mi Jung Park, Yu Ji Cho, Yi Yeong Jeong, Kyung Nyeo Jeon, Kyung Soo Bae, Ho Cheol Kim, Jong Deog Lee
INTRODUCTION: Limb muscle wasting is one of main systemic manifestation of chronic obstructive pulmonary disease (COPD). However, the change of respiratory muscle is unclear. OBJECTIVES: This study assessed the cross-sectional area (CSA) of the intercostal muscles (ICMs) in patients with COPD, using chest computed tomography (CT) and determined its association with the clinical characteristics of COPD. METHODS: We retrospectively reviewed 60 patients with stable COPD and compared them with 30 controls...
January 5, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28044041/visual-diagnosis-a-child-with-presumed-reactive-airway-disease-pectus-carinatum-and-aortic-root-dilation
#18
REVIEW
Aamir Jeewa, Shaine A Morris, William J Dreyer, Iki Adachi, Susan W Denfield, E Dean McKenzie
No abstract text is available yet for this article.
January 2017: Pediatrics in Review
https://www.readbyqxmd.com/read/28031454/rad-reactive-airways-disease-or-really-asthma-disease
#19
Lindsey C Douglas, Katherine J Feder
No abstract text is available yet for this article.
January 2017: Pediatrics
https://www.readbyqxmd.com/read/28007622/control-of-ventilation-in-health-and-disease
#20
REVIEW
Susmita Chowdhuri, M Safwan Badr
Control of ventilation occurs at different levels of the respiratory system via a negative feedback system that allows for precise regulation of levels of arterial carbon dioxide and oxygen. Mechanisms for ventilatory instability leading to sleep disordered breathing include changes in respiratory rhythm genesis and chemoresponsiveness to hypoxia and hypercapnia, cerebrovascular reactivity, abnormal chest wall and airway reflexes, and sleep state oscillations. One can potentially stabilize breathing during sleep-related breathing disorders by identifying one or more of these pathophysiological mechanisms...
December 19, 2016: Chest
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