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https://www.readbyqxmd.com/read/29777594/il-3-producing-basophils-are-required-to-exacerbate-airway-hyper-responsiveness-in-a-murine-inflammatory-model
#1
Rachel Rignault-Bricard, François Machavoine, Salah Mecheri, Olivier Hermine, Elke Schneider, Michel Dy, Maria Leite-de-Moraes
BACKGROUND: Basophils are commonly associated with allergic responses because of their ability to produce large amounts of pro-Th2 cytokines and histamine. However, the mechanisms through which bone marrow-resident basophils (BMRB) become fully competent cytokine and histamine producers in response to IgE crosslinking are poorly understood. Here, we sought to determine the role of IL-3 in promoting pro-Th2 basophils. METHODS: BMRB and basophils exposed to IL-3 in vitro and in vivo were evaluated for their production of Th2 cytokines and histamine in response to FcεRI crosslinking on both protein and gene expression levels...
May 19, 2018: Allergy
https://www.readbyqxmd.com/read/29775671/variable-ventilation-decreases-airway-responsiveness-and-improves-ventilation-efficiency-in-a-rat-model-of-asthma
#2
Fatemeh Ilka, Mohammad Javan, Mohammad Reza Raoufy
The optimal ventilation strategy in patients receiving mechanical ventilation for severe asthma remains unclear. The effect of conventional ventilation (with constant tidal volume and respiratory rate) and variable ventilation (with the same average but variable tidal volume and respiratory rate) on peak airway pressure and airway exacerbation induced by increasing doses of methacholine was compared in a rat model of asthma. The respiratory rate and tidal volume data were obtained from a spontaneously breathing intact rat during immobility using a whole-body plethysmograph...
May 15, 2018: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29772578/long-term-omalizumab-treatment-a-multicenter-real-life-5-year-trial
#3
Arzu Yorgancıoğlu, Ferda Öner Erkekol, Dilşad Mungan, Münevver Erdinç, Bilun Gemicioğlu, Zeynep Ferhan Özşeker, Papatya Bayrak Değirmenci, Sibel Naycı, Aykut Çilli, Füsun Erdenen, Cengiz Kırmaz, Dane Ediger, Arzu Didem Yalçın, Suna Büyüköztürk, Sami Öztürk, Mustafa Güleç, Sacide Rana Işık, Ali Fuat Kalyoncu, Özlem Göksel, Ömür Aydın, Yavuz Havlucu, İdilhan Baloğlu Ar, Ahmet Erdoğdu
BACKGROUND: Omalizumab has demonstrated therapeutic benefits both in controlled clinical trials and real-life studies. However, research concerning the long-term effects and tolerability of omalizumab is needed. The main objective of this study was to evaluate the effectiveness and tolerability of treatment with omalizumab for up to 5 years. METHODS: A multicenter, retrospective, chart-based study was carried out to compare documented exacerbations, hospitalizations, systemic steroid requirement, FEV1, and asthma control test (ACT) results during 1 year prior to omalizumab treatment versus at 1, 3, and 5 years of treatment...
May 17, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29772098/insights-in-particulate-matter-induced-allergic-airway-inflammation-focus-on-the-epithelium
#4
Katrien C De Grove, Sharen Provoost, Guy G Brusselle, Guy F Joos, Tania Maes
Outdoor air pollution is a major environmental health problem throughout the world. In particular, exposure to particulate matter (PM) has been associated with the development and exacerbation of several respiratory diseases, including asthma. Although the adverse health effects of PM have been demonstrated for many years, the underlying mechanisms have not been fully identified. In this review, we focus on the role of the lung epithelium and specifically highlight multiple cytokines in PM-induced respiratory responses...
May 17, 2018: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29771333/multiple-comorbid-conditions-sleep-quality-and-duration-and-academic-performance-in-urban-children-with-asthma
#5
Katharine C Reynolds, Julie Boergers, Sheryl J Kopel, Daphne Koinis-Mitchell
Objective: Common comorbid medical conditions including allergic rhinitis (AR), obesity, and sleep disordered breathing (SDB) have been linked with asthma exacerbations; however, these conditions also impact sleep and academic functioning. The current study sought to examine unique and combined associations of these common comorbidities on sleep and academic performance among urban minority children with persistent asthma. We expected additional comorbid diagnoses would be associated with poorer sleep and academic functioning...
May 15, 2018: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/29770729/group-sequential-designs-for-negative-binomial-outcomes
#6
Tobias Mütze, Ekkehard Glimm, Heinz Schmidli, Tim Friede
Count data and recurrent events in clinical trials, such as the number of lesions in magnetic resonance imaging in multiple sclerosis, the number of relapses in multiple sclerosis, the number of hospitalizations in heart failure, and the number of exacerbations in asthma or in chronic obstructive pulmonary disease (COPD) are often modeled by negative binomial distributions. In this manuscript, we study planning and analyzing clinical trials with group sequential designs for negative binomial outcomes. We propose a group sequential testing procedure for negative binomial outcomes based on Wald statistics using maximum likelihood estimators...
January 1, 2018: Statistical Methods in Medical Research
https://www.readbyqxmd.com/read/29769295/indoor-mould-exposure-asthma-and-rhinitis-findings-from-systematic-reviews-and-recent-longitudinal-studies
#7
REVIEW
Denis Caillaud, Benedicte Leynaert, Marion Keirsbulck, Rachel Nadif
Starting from the Institute of Medicine (IOM) and World Health Organization (WHO) reports, this review provides an overview of the literature published from 2006 to 2017 on the associations between indoor mould exposure and asthma and rhinitis separately in children and adults with a focus on longitudinal epidemiological studies.A systematic search of peer-reviewed literature was performed, including systematic reviews and meta-analyses, longitudinal, incident case-control and panel studies. 61 publications were identified reporting visible mould or mould odour or quantitative assessment of culturable fungi or mould species...
June 30, 2018: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/29768397/lipopolysaccharide-exposure-alleviates-asthma-in-mice-by-regulating-th1-th2-and-treg-th17-balance
#8
Fengxia Ding, Zhou Fu, Bo Liu
BACKGROUND It is generally believed that endotoxin exposure exacerbates risk of developing asthmatic symptoms. However, recent studies have indicated that prior bacterial exposure may prevent future symptoms of asthma. Here, we evaluated the influence of pre-exposure to different concentrations of lipopolysaccharide (LPS) to subsequent ovalbumin (OVA) allergen sensitization and challenge. MATERIAL AND METHODS Four-week-old Balb/c mice were treated intranasally with varying concentrations of LPS (1 ug, 10 ug, and 100 ug) or sterile PBS for 10 days, then 2 weeks later they were exposed to OVA...
May 16, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29768149/inhaled-combined-budesonide-formoterol-as-needed-in-mild-asthma
#9
Paul M O'Byrne, J Mark FitzGerald, Eric D Bateman, Peter J Barnes, Nanshan Zhong, Christina Keen, Carin Jorup, Rosa Lamarca, Stefan Ivanov, Helen K Reddel
BACKGROUND: In patients with mild asthma, as-needed use of an inhaled glucocorticoid plus a fast-acting β2 -agonist may be an alternative to conventional treatment strategies. METHODS: We conducted a 52-week, double-blind trial involving patients 12 years of age or older with mild asthma. Patients were randomly assigned to one of three regimens: twice-daily placebo plus terbutaline (0.5 mg) used as needed (terbutaline group), twice-daily placebo plus budesonide-formoterol (200 μg of budesonide and 6 μg of formoterol) used as needed (budesonide-formoterol group), or twice-daily budesonide (200 μg) plus terbutaline used as needed (budesonide maintenance group)...
May 17, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29768147/as-needed-budesonide-formoterol-versus-maintenance-budesonide-in-mild-asthma
#10
Eric D Bateman, Helen K Reddel, Paul M O'Byrne, Peter J Barnes, Nanshan Zhong, Christina Keen, Carin Jorup, Rosa Lamarca, Agnieszka Siwek-Posluszna, J Mark FitzGerald
BACKGROUND: Patients with mild asthma often rely on inhaled short-acting β2 -agonists for symptom relief and have poor adherence to maintenance therapy. Another approach might be for patients to receive a fast-acting reliever plus an inhaled glucocorticoid component on an as-needed basis to address symptoms and exacerbation risk. METHODS: We conducted a 52-week, double-blind, multicenter trial involving patients 12 years of age or older who had mild asthma and were eligible for treatment with regular inhaled glucocorticoids...
May 17, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29764909/ohio-pediatric-asthma-repository-opportunities-to-revise-care-practices-to-decrease-time-to-physiologic-readiness-for-discharge
#11
Jeffrey M Simmons, Jocelyn M Biagini Myers, Lisa J Martin, Carolyn M Kercsmar, Christine L Schuler, Valentina V Pilipenko, John W Kroner, Hua He, Stephen R Austin, Huyen-Tran Nguyen, Kristie R Ross, Karen S McCoy, Sherman J Alter, Samantha M Gunkelman, Pierre A Vauthy, Gurjit K Khurana Hershey
BACKGROUND: Large-scale, multisite studies in which researchers evaluate patient- and systems-level factors associated with pediatric asthma exacerbation outcomes are lacking. We sought to investigate patient-level risks and system-level practices related to physiologic readiness for discharge (PRD) in the prospective Ohio Pediatric Asthma Repository. METHODS: Participants were children ages 2 to 17 years admitted to an Ohio Pediatric Asthma Repository hospital for asthma exacerbation...
May 15, 2018: Hospital Pediatrics
https://www.readbyqxmd.com/read/29762870/t-cells-and-ilc2s-are-major-effector-cells-in-influenza-induced-exacerbation-of-allergic-airway-inflammation-in-mice
#12
Bobby W S Li, Marjolein J W de Bruijn, Melanie Lukkes, Menno van Nimwegen, Ingrid M Bergen, Alex KleinJan, Corine H GeurtsvanKessel, Arno Andeweg, Guus F Rimmelzwaan, Rudi W Hendriks
Influenza virus infection is an important cause of severe asthma exacerbations, but it remains unclear how a Th1-mediated antiviral response triggers a prototypical Th2 disease. We investigated CD4+ T cells and group 2 innate lymphoid cells (ILC2s) in influenza virus-infected mice. We found that ILC2s accumulated in the lung rapidly after influenza virus infection, but the induction of IL-5 and IL-13 secretion was delayed and concomitant with T cell activation. In an influenza-induced exacerbation of allergic airway inflammation model we noticed an initial reduction of ILC2 numbers and cytokine production in broncho-alveolar lavage compared to chronic house dust mite (HDM)-mediated airway inflammation alone...
May 15, 2018: European Journal of Immunology
https://www.readbyqxmd.com/read/29760414/fragment-derived-inhibitors-of-human-n-myristoyltransferase-block-capsid-assembly-and-replication-of-the-common-cold-virus
#13
Aurélie Mousnier, Andrew S Bell, Dawid P Swieboda, Julia Morales-Sanfrutos, Inmaculada Pérez-Dorado, James A Brannigan, Joseph Newman, Markus Ritzefeld, Jennie A Hutton, Anabel Guedán, Amin S Asfor, Sean W Robinson, Iva Hopkins-Navratilova, Anthony J Wilkinson, Sebastian L Johnston, Robin J Leatherbarrow, Tobias J Tuthill, Roberto Solari, Edward W Tate
Rhinoviruses (RVs) are the pathogens most often responsible for the common cold, and are a frequent cause of exacerbations in asthma, chronic obstructive pulmonary disease and cystic fibrosis. Here we report the discovery of IMP-1088, a picomolar dual inhibitor of the human N-myristoyltransferases NMT1 and NMT2, and use it to demonstrate that pharmacological inhibition of host-cell N-myristoylation rapidly and completely prevents rhinoviral replication without inducing cytotoxicity. The identification of cooperative binding between weak-binding fragments led to rapid inhibitor optimization through fragment reconstruction, structure-guided fragment linking and conformational control over linker geometry...
May 14, 2018: Nature Chemistry
https://www.readbyqxmd.com/read/29759659/the-global-development-and-clinical-efficacy-of-sublingual-tablet-immunotherapy-for-allergic-diseases
#14
REVIEW
Hendrik Nolte, Jennifer Maloney
Allergy immunotherapy (AIT) is a treatment option for respiratory allergy that is complementary to pharmacotherapy, with a distinct mechanism of action. Alternative methods to subcutaneous administration of AIT that enable patients to safely self-administer AIT is considered an unmet clinical need. The sublingual immunotherapy tablet (SLIT-tablet) is an orally disintegrating pharmaceutical formulation (oral lyophilisate) containing standardized allergens. SLIT-tablets have been developed for sublingual immunotherapy (SLIT) of cedar-pollen, grass-pollen, ragweed-pollen, tree-pollen, and house dust mite allergies...
May 12, 2018: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29758289/exposure-to-a-combination-of-formaldehyde-and-dinp-aggravated-asthma-like-pathology-through-oxidative-stress-and-nf-%C3%AE%C2%BAb-activation
#15
Jun Kang, Jiufei Duan, Jing Song, Chen Luo, Hong Liu, Baizhan Li, Xu Yang, Wei Yu, Mingqing Chen
Several epidemiological and experimental studies indicate a positive association between exposure to formaldehyde or phthalates and allergic asthma. However, nothing is yet known about the effects of exposure to formaldehyde and phthalates together, nor the role of each on allergic asthma. Here, we investigated the effects of a combined exposure to formaldehyde and diisononyl phthalate (DINP) on asthma-like pathology in mice, and determined the underlying mechanisms implicated in NF-κB and ROS. Mice were exposed to formaldehyde and/or DINP and sensitization with OVA...
May 11, 2018: Toxicology
https://www.readbyqxmd.com/read/29758106/sputum-to-serum-hydrogen-sulfide-ratio-as-a-novel-biomarker-of-predicting-future-risks-of-asthma-exacerbation
#16
Yasuhito Suzuki, Junpei Saito, Masami Kikuchi, Manabu Uematsu, Atsuro Fukuhara, Suguru Sato, Mitsuru Munakata
BACKGROUND: Increased level of hydrogen sulfide (H2 S) in sputum is reported to be a new biomarker of neutrophilic airway inflammation in chronic airway disorders. However, the relationship between H2 S and disease activity remains unclear. OBJECTIVE: We investigated whether H2 S levels could vary during different conditions in asthma. METHOD: H2 S levels in sputum and serum were measured using a sulfide-sensitive electrode in 47 stable asthmatic subjects (S-BA), 21 uncontrolled asthmatic subjects (UC-BA), 26 asthmatic subjects with acute exacerbation (AE-BA), and 15 healthy subjects...
May 14, 2018: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29756703/most-commonly-isolated-viruses-in-asthma-exacerbation-and-their-correlation-with-eosinophil-and-total-serum-immunoglobulin-e-levels
#17
Mireya Robledo Aceves, Alejandro Barrón Balderas, María de L Jaime Ornelas
BACKGROUND: Asthma exacerbations are still a cause of hospitalization at the Emergency Department. The triggers of asthma exacerbations include allergens and infections -mostly viral-. The objective of this study was to establish the relationship between viruses detected during an asthma exacerbation and eosinophil and serum immunoglobulin E (IgE) levels in pediatric patients. POPULATION AND METHODS: Cross-sectional. analytical study. Children aged 5-15 years seen at the Pediatric Emergency Department with an asthma exacerbation in the period between March 2013 and February 2016 were included...
June 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29756701/prevalence-of-mycoplasma-pneumoniae-infection-in-pediatric-patients-with-acute-asthma-exacerbation
#18
Elías Kassisse, Hecmary García, Linair Prada, Ixora Salazar, Jorge Kassisse
INTRODUCTION: Mycoplasma pneumoniae may be involved in refractory asthma exacerbation. OBJECTIVE: To determine the prevalence of Mycoplasma pneumoniae infection in patients with acute asthma exacerbation. Material and method. A prospective, crosssectional, observational, case-control study was carried out in patients older than 2 years old and younger than 12. Immunoglobulin M (IgM) antibodies were serologically determined for M. pneumoniae, using the NovaLisa® NovaTec kit for enzyme-linked immunosorbent assay (ELISA)...
June 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29755960/long-sun-exposures-influencing-high-sub-cutaneous-synthesis-of-vitamin-d3-may-be-associated-with-exacerbation-of-symptoms-in-allergic-asthma
#19
L G D'Cruz, S A Husain, T Wells, C Morgan, P J Stanczyk, A Satgunarajah, J Kashir, B L Calver, L M Blayney, F A Lai
Objectives: Does excessive sun-exposure, non-use of sunscreen and/or high doses of vitamin-D3 supplements provoke exacerbation of asthma? Design: Clinical examinations, retrospective records-access and questionnaire surveys were distributed to a convenience sample of allergic-asthma patient (n=183). Setting: Patients (19-89 years) attending the outpatient respiratory clinics at Maidstone Hospital were enrolled. Results: 90...
March 26, 2018: Journal of Aging Research & Clinical Practice
https://www.readbyqxmd.com/read/29755346/a-multicenter-randomized-double-blind-placebo-controlled-study-of-the-effects-of-loki-zupa-in-patients-with-chronic-asthma
#20
Yubao Lv, Ying Wei, Muhammadjan Abduwaki, Tohti Jurat, Fengsen Li, Huaizhen Wang, Yuhua Wu, Zheng Li, Bo Liu, Hongjun Yin, Yuxue Cao, Mammat Nurahmat, Zihui Tang, Jingcheng Dong
The purpose of this study was to evaluate the efficacy and safety of Uyghur medical formula Loki zupa in patients with chronic asthma. Adult patients with chronic asthma randomly received placebo or Loki zupa as add-on to inhaled corticosteroids (ICS) maintenance treatment. Loki zupa or mimics was administered orally 10 ml per time, three times a day for 8 weeks. The primary endpoints were asthma control test (ACT) score and peak expiratory flow (PEF). The secondary endpoints were acute exacerbation rate, lung function, night waking days, and symptom-free days in the near 2 weeks, Asthma Quality of Life Questionnaire (AQLQ) score and some inflammatory cytokines in peripheral blood...
2018: Frontiers in Pharmacology
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