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https://www.readbyqxmd.com/read/28213201/respiratory-load-perception-in-overweight-and-asthmatic-children
#1
Victoria MacBean, Lorna Wheatley, Alan C Lunt, Gerrard F Rafferty
Overweight asthmatic children report greater symptoms than normal weight asthmatics, despite comparable airflow obstruction. This has been widely assumed to be due to heightened perception of respiratory effort. Three groups of children (healthy weight controls, healthy weight asthmatics, overweight asthmatics) rated perceived respiratory effort throughout an inspiratory resistive loading protocol. Parasternal intercostal electromyogram was used as an objective marker of respiratory load; this was expressed relative to tidal volume and reported as a ratio of the baseline value (neuroventilatory activity ratio (NVEAR))...
February 14, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28212463/efficacy-and-tolerability-of-an-inhaled-selective-glucocorticoid-receptor-modulator-azd5423-in-copd-patients-phase-ii-study-results
#2
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/28209625/association-of-blood-eosinophil-and-blood-neutrophil-counts-with-asthma-exacerbations-in-the-copenhagen-general-population-study
#3
Signe Vedel-Krogh, Sune Fallgaard Nielsen, Peter Lange, J Rgen Vestbo, B Rge Gr Nne Nordestgaard
BACKGROUND: Blood eosinophil count is a marker of eosinophilic airway inflammation and disease severity in asthma. However, blood neutrophil count might also be associated with disease severity. We tested the hypothesis that high blood eosinophil and neutrophil counts are both associated with the risk of asthma exacerbations among individuals with asthma from the general population. METHODS: From the Copenhagen General Population Study with 81351 participants, we included 4838 with self-reported asthma...
February 16, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28209270/crosstalk-between-glucocorticoids-and-il-4-modulates-ym1-expression-in-alternatively-activated-myeloid-cells
#4
Nathalie Ng Kuet Leong, Frank Brombacher, Alexander H Dalpke, Michael Weitnauer
Airway epithelial cells induce a tolerogenic microenvironment by modulating immune cells in the lung. We recently showed that the supernatant of airway epithelial cells induces two marker genes of alternative activation, Ym1 and Ms4a8a, in respiratory myeloid cells. This induction was partially mediated by glucocorticoids, secreted by airway epithelial cells. In this study, we further investigated Ym1 and Ms4a8a regulation in alternatively activated myeloid cells in the presence of the TH2 cytokines IL-4 and IL-13...
February 9, 2017: Immunobiology
https://www.readbyqxmd.com/read/28209039/-the-value-of-fractionated-exhaled-nitric-oxide-in-the-diagnosis-of-asthma-chronic-obstructive-pulmonary-disease-overlap-syndrome
#5
D D Deng, A Y Zhou, Q C Shuang, P Chen
Objective: To explore the diagnostic value of fractionated exhaled nitric oxide (FeNO) measurement in patients with asthma-chronic obstructive pulmonary disease(COPD) overlap syndrome (ACOS). Methods: Eighty-one patients with ACOS, 76 patients with asthma, 82 patients with COPD and 39 healthy non-smoking subjects were recruited in the study. Naku Lun breath analyzer was used to measure the level of FeNO in the 4 groups. Pulmonary function was also measured. The ROC curve was used to differentiate ACOS from patients with COPD...
February 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28207927/attenuated-airway-hyperresponsiveness-and-mucus-secretion-in-hdm-exposed-igf1r-deficient-mice
#6
S Piñeiro-Hermida, J A Gregory, I P López, R Torrens, C Ruíz-Martínez, M Adner, J G Pichel
BACKGROUND: Asthma is a common chronic lung disease characterized by airflow obstruction, airway hyperresponsiveness (AHR) and inflammation. IGFs have been reported to play a role in asthma but little is known about how the Insulin-like Growth Factor 1 Receptor (IGF1R) affects asthma pathobiology. METHODS: Female Igf1r-deficient and control mice were intranasally challenged with house dust mite (HDM) extract or PBS five days per week for four weeks. Lung function measurements, and bronchioalveolar lavage fluid (BALF), serum and lungs were collected on day 28 for further cellular, histological and molecular analysis...
February 16, 2017: Allergy
https://www.readbyqxmd.com/read/28202405/urinary-leukotriene-e4-to-determine-aspirin-intolerance-in-asthma-a-systematic-review-and-meta-analysis
#7
John B Hagan, Tanya M Laidlaw, Rohit Divekar, Erin K O'Brien, Hirohito Kita, Gerald W Volcheck, Christina R Hagan, Devyani Lal, Harry G Teaford, Patricia J Erwin, Nan Zhang, Matthew A Rank
BACKGROUND: Urinary leukotriene E4 (ULTE4) may be a biomarker that distinguishes aspirin-intolerant asthma from other asthma subtypes. OBJECTIVE: To estimate the diagnostic testing accuracy of ULTE4 as a marker of aspirin intolerance in patients with asthma using previously published studies. METHODS: We identified relevant clinical studies from a systematic review of English and non-English articles using MEDLINE, EMBASE, and CENTRAL (inception to February 10, 2015)...
February 12, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28199764/clinical-markers-of-asthma-and-ige-assessed-in-parents-before-conception-predicts-asthma-and-hay-fever-in-the-offspring
#8
Randi J Bertelsen, Marta Rava, Anne Elie Carsin, Simone Accordini, Bryndis Benediktsdóttir, Julia Dratva, Karl A Franklin, Joachim Heinrich, Mathias Holm, Christer Janson, Ane Johannessen, Deborah L Jarvis, Rain Jogi, Benedicte Leynaert, Dan Norback, Ernst Reidar Omenaas, Chantal Raherison, José Luis Sánchez-Ramos, Vivi Schlünssen, Torben Sigsgaard, Shyamali C Dharmage, Cecilie Svanes
BACKGROUND: Mice models suggest epigenetic inheritance induced by parental allergic disease activity. However, we know little of how parental disease activity before conception influences offspring's asthma and allergy in humans. OBJECTIVE: We aimed to assess the associations of parental asthma severity, bronchial hyperresponsiveness (BHR), and total and specific IgEs, measured before conception vs after birth, with offspring asthma and hay fever. METHODS: The study included 4293 participants (mean age 34, 47% men) from the European Community Respiratory Health Survey (ECRHS) with information on asthma symptom severity, BHR, total and specific IgEs from 1991-1993, and data on 9100 offspring born 1972-2012...
February 15, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28188922/suplatast-tosilate-protects-the-lung-against-hyperoxic-lung-injury-by-scavenging-hydroxyl-radicals
#9
Kazuhide Fukuhara, Taku Nakashima, Manabu Abe, Takeshi Masuda, Hironobu Hamada, Hiroshi Iwamoto, Kazunori Fujitaka, Nobuoki Kohno, Noboru Hattori
Prolonged exposure to hyperoxia produces extraordinary amounts of reactive oxygen species (ROS) in the lung and causes hyperoxic lung injury. Although supraphysiological oxygen is routinely administered for the management of respiratory failure, there is no effective strategy to prevent hyperoxic lung injury. In our previous study, we showed that suplatast tosilate, an asthma drug that inhibits T helper 2 (Th2) cytokines, ameliorated bleomycin-induced lung injury and fibrosis through Th2-independent mechanisms...
February 7, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28178857/dietary-2-oxoglutarate-prevents-bone-loss-caused-by-neonatal-treatment-with-maximal-dexamethasone-dose
#10
Piotr Dobrowolski, Ewa Tomaszewska, Siemowit Muszyński, Tomasz Blicharski, Stefan G Pierzynowski
Synthetic glucocorticoids (GCs) are widely used in the variety of dosages for treatment of premature infants with chronic lung disease, respiratory distress syndrome, allergies, asthma, and other inflammatory and autoimmune conditions. Yet, adverse effects such as glucocorticoid-induced osteoporosis and growth retardation are recognized. Conversely, 2-oxoglutarate (2-Ox), a precursor of glutamine, glutamate, and collagen amino acids, exerts protective effects on bone development. Our aim was to elucidate the effect of dietary administered 2-Ox on bone loss caused by neonatal treatment with clinically relevant maximal therapeutic dexamethasone (Dex) dose...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28175985/polycyclic-aromatic-hydrocarbons-exposure-oxidative-stress-and-asthma-in-children
#11
I-Jen Wang, Wilfried J J Karmaus, Chen-Chang Yang
PURPOSE: Polycyclic aromatic hydrocarbons (PAHs) are known for their carcinogenic and teratogenic properties. However, little is known about the effect of PAH on our immune and respiratory systems. Hence, we investigated associations (1) between PAH exposure and IgE levels and asthma in children and (2) between PAH exposure and the oxidative stress marker 8OHdG potentially involved in disease pathogenesis stratifying by (3) sex-based differences. METHODS: A total of 453 kindergarten children were recruited and provided samples...
February 7, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28174042/phthalate-induced-oxidative-stress-and-association-with-asthma-related-airway-inflammation-in-adolescents
#12
Carmen Franken, Nathalie Lambrechts, Eva Govarts, Gudrun Koppen, Elly Den Hond, Daniëlla Ooms, Stefan Voorspoels, Liesbeth Bruckers, Ilse Loots, Vera Nelen, Isabelle Sioen, Tim S Nawrot, Willy Baeyens, Nicolas Van Larebeke, Greet Schoeters
BACKGROUND: In Belgium, around 8.5% of the children have asthmatic symptoms. Increased asthma risk in children has been reported in relation to exposure to phthalate plasticizers but the underlying mechanisms are largely unknown. AIM: The aim of this study was to identify if oxidative stress, assessed by excision of 8-hydroxydeoxyguanosine (8-OHdG) from damaged DNA, is an intermediate marker for the association between phthalate exposure and doctor-diagnosed asthma...
January 30, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28154328/efficient-preparation-of-ephedrine-alkaloids-free-ephedra-herb-extract-and-its-antitumor-effect-and-putative-marker-compound
#13
Naohiro Oshima
 Ephedra Herb is a crude drug for the treatment of headache, bronchial asthma, nasal inflammation, and the common cold. Although it has been considered that ephedrine alkaloids (EAs) are the principal active ingredients of Ephedra Herb, EAs are known to induce palpitations, hypertension, insomnia, and dysuria as major side effects. Therefore, the administration of EAs-containing drugs to patients with cardiovascular-related diseases is strongly contraindicated. Previously, we isolated herbacetin 7-O-neohesperidoside from Ephedra Herb...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28151459/effect-of-nigella-sativa-supplementation-on-lung-function-and-inflammatory-mediatorsin-partly-controlled-asthma-a-randomized-controlled-trial
#14
Ayad Mohammed Salem, Abdullah Omar Bamosa, Hatem Othman Qutub, Rakesh Kumar Gupta, Ahmed Badar, Abdelsalam Elnour, Muhammad Nasir Afzal
BACKGROUND: Nigella sativa and its derivatives have been reported to have anti-inflammatory and bronchodilator effects, but the effects have been evaluated in only a few clinical studies. OBJECTIVES: To determine the effect of N sativa supplementation on inflammation of the airways and limitation of airflow in partly controlled asthma patients. DESIGN: Single-blind, placebo-controlled, randomized study. SETTING: Asthma and allergy clinic of a university hospital in eastern Saudi Arabia...
January 2017: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/28146297/development-of-a-patient-centered-outcome-measure-for-emergency-department-asthma-patients
#15
Margaret E Samuels-Kalow, Karin V Rhodes, Mira Henien, Emily Hardy, Thomas Moore, Felicia Wong, Carlos A Camargo, Carolyn T Rizzo, Cynthia Mollen
BACKGROUND: Measuring outcomes of emergency care is of key importance, but current metrics, such as 72-hour return visit rates, are subject to ascertainment bias, incentivize over-testing and over-treatment at initial visit, and do not reflect the full burden of disease and morbidity experienced at home following ED care. There is increasing emphasis on including patient-reported outcomes, but the existing patient-reported measures have limited applicability to emergency care. OBJECTIVE: To identify concepts for inclusion in a patient-reported outcome measure for ED care, and assess differences in potential concepts by health literacy...
February 1, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28137504/etiology-and-treatment-of-cough-in-idiopathic-pulmonary-fibrosis
#16
REVIEW
Christine L Vigeland, Andrew H Hughes, Maureen R Horton
Idiopathic pulmonary fibrosis (IPF) is a progressive disease of dysregulated wound healing leading to unremitting scarring and loss of lung function. The predominant symptoms are dyspnea on exertion and a persistent dry cough. For patients with IPF, cough is more than just bothersome; it has a significant negative impact on quality of life and is a marker of disease severity and progression. The etiology of cough in IPF is unclear but may be due to architectural distortion of the lungs, increased sensitivity of the cough reflex, airway inflammation, or changes in mucus production and clearance...
February 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28126433/two-inflammatory-phenotypes-of-nasal-polyps-and-comorbid-asthma
#17
Dawei Wu, Lun Li, Min Zhang, Jianting Wang, Yongxiang Wei
BACKGROUND: Nasal polyps and comorbid asthma (NPCA) is a common united airway disease. However, the inflammatory phenotyes of NPCA are not clear. OBJECTIVE: To identify inflammatory phenotypes of NPCA. METHODS: A total of 106 patients diagnosed with NPCA were recruited from rhinologic clinics. A combined method of biopsies from nasal polyps and fractional exhaled nitric oxide (FeNO) was used to explore inflammatory phenotyes of NPCA. Patients were evaluated with respect to clinical, functional, and inflammatory parameters...
January 23, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28108336/ccsp-serum-level-is-a-surrogate-marker-of-small-airway-involvment-in-asthma
#18
Sebastien Bommart, Grégory Marin, Nicolas Molinari, Lucie Knabe, Aurélie Petit, Pascal Chanez, Anne Sophie Gamez, Catherine Devautour, Isabelle Vachier, Arnaud Bourdin
Serum CCSP level was independently related to small airway hyperresponsiveness, measured by the slope of air-trapping progression measured using CT. In asthmatic patients, this blood biomarker may identify small airways involvement.
January 17, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28100228/association-of-stem-cell-factor-gene-expression-with-severity-and-atopic-state-in-patients-with-bronchial-asthma
#19
Safaa I Tayel, Sally M El-Hefnway, Eman M Abd El Gayed, Gehan A Abdelaal
BACKGROUND: Bronchial asthma is a chronic inflammatory and remodeling disorder of the airways, in which many cells, cellular elements, and cytokines play important roles. Stem cell factor (SCF) may contribute to the inflammatory changes occurring in asthma. We aimed to show the expression of SCF gene in patients with asthma as a means of diagnosis and its association with severity and atopic state in these patients. METHODS: This study was carried out on 80 subjects, 50 asthmatic patients and 30 age and gender matched healthy control persons...
January 18, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28097001/mag-dpa-curbs-inflammatory-biomarkers-and-pharmacological-reactivity-in-cytokine-triggered-hyperresponsive-airway-models
#20
Rayan Khaddaj-Mallat, Roddy Hiram, Chantal Sirois, Marco Sirois, Edmond Rizcallah, Sofia Marouan, Caroline Morin, Éric Rousseau
Bronchial inflammation contributes to a sustained elevation of airway hyperresponsiveness (AHR) in asthma. Conversely, omega-3 fatty acid derivatives have been shown to resolve inflammation in various tissues. Thus, the effects of docosapentaenoic acid monoacylglyceride (MAG-DPA) were assessed on inflammatory markers and reactivity of human distal bronchi as well as in a cultured model of guinea pig tracheal rings. Human bronchi were dissected and cultured for 48 h with 10 ng/mL TNF-α or IL-13. Guinea pig tracheas were maintained in organ culture for 72 h which was previously shown to trigger spontaneous AHR...
December 2016: Pharmacology Research & Perspectives
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