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https://www.readbyqxmd.com/read/28102830/can-exhaled-volatile-organic-compounds-predict-asthma-exacerbations-in-children
#1
Dillys van Vliet, Agnieszka Smolinska, Quirijn Jöbsis, Jean Muris, Philippe Rosias, Jan Dallinga, Edward Dompeling, Frederik van Schooten
Background Asthma control falls short of current goals of asthma management guidelines. Non-invasive monitoring of airway inflammation may help to improve the level of asthma control in children. Aim 1) To identify a set of exhaled volatile organic compounds (VOCs) that is most predictive for an asthma exacerbation in children. 2) To determine the chemical background of predictive VOCs. Methods In an one-year prospective observational study, 96 asthmatic children were studied . At clinical visits with an interval of 2 months, asthma control, fractional exhaled nitric oxide, lung function (FEV1, FEV1/VC) and VOCs in exhaled breath were determined by means of gas chromatography time-of-flight mass spectrometry...
January 19, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28102732/exacerbating-effects-of-pm2-5-in-ova-sensitized-and-challenged-mice-and-the-expression-of-trpa1-and-trpv1-protein-in-lung
#2
Hong Liu, Xinsheng Fan, Naiqian Wang, Yuyan Zhang, Jinghua Yu
OBJECTIVE: To investigate the effects of PM2.5 on asthma-related phenotypes and on the expression of TRPA1, V1 protein in lung in a mouse model of asthma. METHODS: Female Balb/c mice were utilized to establish 28 and 42 day asthma models. Mice were sensitized with OVA and challenged with OVA, OVA plus normal saline (NS), or OVA plus PM2.5 at two doses, 1.6 mg·kg(-1) or 8.0 mg·kg(-1). PM2.5 was administrated by intratracheal instillationwithout anesthesia. 24 hours after the final OVA challenge changes in airway resistance (RI) and lung compliance (Cdyn) in response to acetylcholine chloride (ACH) were evaluated, and blood, bronchoalveolar lavage fluid (BALF) and lung tissue samples were taken...
January 19, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28102717/seasonal-and-geographic-variation-in-the-incidence-of-asthma-exacerbations-in-the-united-states
#3
M Gerhardsson de Verdier, Per Gustafson, Christopher McCrae, Staffan Edsbäcker, Neil Johnston
BACKGROUND: Exacerbations drive the burden of asthma and lead to significant morbidity and consumption of healthcare resources. Many prior studies of the epidemiology of asthma exacerbations have relied upon data from hospital care. OBJECTIVE: To determine US patterns of geographic and seasonal variation of asthma exacerbations being defined as asthma episodes requiring hospital care and/or a prescription for oral steroid. METHODS: The study was a retrospective observational cohort study using administrative claims data for insured individuals from the HealthCore Integrated Research Database, including around 43 million members in US...
January 19, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28102057/periostin-in-exhaled-breath-condensate-and-in-serum-of-asthmatic-patients-relationship-to-upper-and-lower-airway-disease
#4
Aleksandra Wardzyńska, Joanna S Makowska, Małgorzata Pawełczyk, Aleksandra Piechota-Polańczyk, Marcin Kurowski, Marek L Kowalski
PURPOSE: Periostin is considered a biomarker for eosinophilic airway inflammation and have been associated with NSAID-Exacerbated Respiratory Disease (NERD) and chronic rhinosinusitis (CRS). In this study, we aimed to evaluate periostin in exhaled breath condensate (EBC) and in serum of patients with various asthma phenotypes. METHODS: The study included 40 asthmatic patients (22 with NERD) and 17 healthy controls. All the procedures (questionnaire, spirometry, FeNO, nasal swabs, EBC collecting, and blood sampling) were performed on the same day...
March 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28102056/asthma-related-outcomes-in-patients-initiating-extrafine-ciclesonide-or-fine-particle-inhaled-corticosteroids
#5
Dirkje S Postma, Richard Dekhuijzen, Thys van der Molen, Richard J Martin, Wim van Aalderen, Nicolas Roche, Theresa W Guilbert, Elliot Israel, Daniela van Eickels, Javaria Mona Khalid, Ron M C Herings, Jetty A Overbeek, Cristiana Miglio, Victoria Thomas, Catherine Hutton, Elizabeth V Hillyer, David B Price
PURPOSE: Extrafine-particle inhaled corticosteroids (ICS) have greater small airway deposition than standard fine-particle ICS. We sought to compare asthma-related outcomes after patients initiated extrafine-particle ciclesonide or fine-particle ICS (fluticasone propionate or non-extrafine beclomethasone). METHODS: This historical, matched cohort study included patients aged 12-60 years prescribed their first ICS as ciclesonide or fine-particle ICS. The 2 cohorts were matched 1:1 for key demographic and clinical characteristics over the baseline year...
March 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28101900/bronchial-thermoplasty-in-severe-asthma-in-australia
#6
David Langton, Joy Sha, Alvin Ing, David Fielding, Erica Wood
BACKGROUND: Bronchial thermoplasty is an approved bronchoscopic intervention for the treatment of severe asthma. However, limited published experience exists outside of clinical trials regarding patient selection and outcomes achieved. Aims To evaluate the effectiveness and safety of bronchial thermoplasty in patients with severe asthma encountered in clinical practice. METHODS: This is a retrospective analysis of the first 'real world' data from Australia. The following outcomes were measured prior to, and 6 months following bronchial thermoplasty: Spirometry, Asthma Control Questionnaire-5 (ACQ-5) score, reliever and preventer medication use, and exacerbation history...
January 19, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28100824/asthma-copd-overlap-syndrome-showed-more-exacerbations-however-lower-mortality-than-copd
#7
J-W Bai, B Mao, W-L Yang, S Liang, H-W Lu, J-F Xu
BACKGROUND: Asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) is a new determinate syndrome whose exact characteristics remain unclear. AIM: The objective of this study is to find more difference between ACOS and COPD. DESIGN: A retrospective study of ACOS and COPD in Chinese. METHODS: Data from 65 patients with ACOS and 65 patients with COPD were retrospectively collected and analyzed. The basis of this study was to compare the two groups while ruling out differences in age, sex and smoking history...
January 18, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28100614/human-rhinovirus-diversity-and-evolution-how-strange-the-change-from-major-to-minor
#8
Nicole Lewis-Rogers, Jon Seger, Frederick R Adler
: Rhinoviruses are the most common cause of the common cold. Their many distinct lineages fall into "major" and "minor" groups that use different cell-surface receptors to enter host cells. Minor-group rhinoviruses are more immunogenic in laboratory studies, although their patterns of transmission and their cold symptoms are broadly similar to those of the major group. Here we present evolutionary evidence that minor-group viruses are also more immunogenic in humans. A key finding is that rates of amino-acid substitution at exposed sites in the capsid proteins VP2, VP3 and VP1 tend to be elevated in minor-group relative to major-group viruses, while rates at buried sites show no consistent differences...
January 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28099820/new-and-developing-non-adrenoreceptor-small-molecule-drugs-for-the-treatment-of-asthma
#9
Neil C Thomson
Introduction Inhaled corticosteroids (ICS) alone or in combination with an inhaled long-acting beta2-agonist (LABA) are the preferred long-term treatment for adults and adolescents with symptomatic asthma. Additional drugs include leukotriene-receptor antagonists, slow-release theophylline and the long-acting muscarinic antagonist (LAMA) tiotropium (approved in 2015). There is a need for more effective therapies, as many patients continue to have poorly controlled asthma. Areas covered New and developing long-acting non-adrenoreceptor synthetic drugs for the treatment of symptomatic chronic asthma despite treatment with an ICS alone or combined with a LABA...
January 18, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28096407/development-of-chronic-allergic-responses-by-dampening-bcl6-mediated-suppressor-activity-in-memory-t-helper-2-cells
#10
Takashi Ogasawara, Masahiko Hatano, Hisae Satake, Jun Ikari, Toshibumi Taniguchi, Nobuhide Tsuruoka, Haruko Watanabe-Takano, Lisa Fujimura, Akemi Sakamoto, Hirokuni Hirata, Kumiya Sugiyama, Yasutsugu Fukushima, Susumu Nakae, Kenji Matsumoto, Hirohisa Saito, Takeshi Fukuda, Kazuhiro Kurasawa, Koichiro Tatsumi, Takeshi Tokuhisa, Masafumi Arima
Mice deficient in the transcriptional repressor B-cell CLL/lymphoma 6 (Bcl6) exhibit similar T helper 2 (TH2) immune responses as patients with allergic diseases. However, the molecular mechanisms underlying Bcl6-directed regulation of TH2 cytokine genes remain unclear. We identified multiple Bcl6/STAT binding sites (BSs) in TH2 cytokine gene loci. We found that Bcl6 is modestly associated with the BSs, and it had no significant effect on cytokine production in newly differentiated TH2 cells. Contrarily, in memory TH2 (mTH2) cells derived from adaptively transferred TH2 effectors, Bcl6 outcompeted STAT5 for binding to TH2 cytokine gene loci, particularly Interleukin4 (Il4) loci, and attenuated GATA binding protein 3 (GATA3) binding to highly conserved intron enhancer regions in mTH2 cells...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28093224/beta-2-adrenoreceptor-polymorphism-at-position-16-determines-the-clinical-severity-of-chronic-obstructive-pulmonary-disease
#11
Justyna Emeryk-Maksymiuk, Andrzej Emeryk, Paweł Krawczyk, Kamila Wojas-Krawczyk, Janusz Milanowski
The Arg/Arg homozygosity at codon 16 of the beta-2-adrenoreceptor (ADRB2) gene has been thought to predispose asthma patients to a poorer therapeutic response to beta-2-mimetics, or to worse control of the disease. In contrast, the results of the studies analysing the effect of ADRB2 polymorphisms on the response to beta-2-adrenoreceptor agonists in chronic obstructive pulmonary disease (COPD) patients are sparse and inconclusive. The aim of this research was to verify if p.Arg16Gly (c.46A > G) and p.Gly27Glu (c...
January 13, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28092390/asthma-comparing-the-impact-of-vitamin-d-versus-uvr-on-clinical-and-immune-parameters
#12
Kylie A Morgan, Elizabeth H Mann, Antony R Young, Catherine M Hawrylowicz
The incidence of asthma has increased markedly since the 1960s and is currently estimated to affect more than 300 million individuals worldwide. A number of environmental factors are implicated in asthma pathogenesis, one of which is vitamin D. Vitamin D deficiency is a global health concern and has increased in parallel with asthma incidence. Epidemiological studies report associations between low vitamin D status, assessed as circulating levels of 25-hydroxyvitamin D, with asthma incidence, severity, exacerbations and responses to treatment...
January 16, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28092287/current-and-future-management-of-the-young-child-with-early-onset-wheezing
#13
Allison J Burbank, Stanley J Szefler
PURPOSE OF REVIEW: In this review, we discuss current thinking in relation to available guidelines for the care of preschool-aged children with recurrent wheezing, while highlighting the gaps in our knowledge and discussing changes that could occur over the next 5 years. RECENT FINDINGS: The Asthma Predictive Index as well as allergen-specific IgE, peripheral eosinophil count and exhaled nitric oxide are perhaps underutilized sources of information that can assist in predicting progression to asthma and response to therapies...
January 13, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28089118/occupational-lung-diseases-from-old-and-novel-exposures-to-effective-preventive-strategies
#14
REVIEW
Paul Cullinan, Xavier Muñoz, Hille Suojalehto, Raymond Agius, Surinder Jindal, Torben Sigsgaard, Anders Blomberg, Denis Charpin, Isabella Annesi-Maesano, Mridu Gulati, Yangho Kim, Arthur L Frank, Metin Akgün, David Fishwick, Rafael E de la Hoz, Subhabrata Moitra
Occupational exposure is an important, global cause of respiratory disease. Unlike many other non-communicable lung diseases, the proximal causes of many occupational lung diseases are well understood and they should be amenable to control with use of established and effective approaches. Therefore, the risks arising from exposure to silica and asbestos are well known, as are the means of their prevention. Although the incidence of occupational lung disease has decreased in many countries, in parts of the world undergoing rapid economic transition and population growth-often with large informal and unregulated workforces-occupational exposures continue to impose a heavy burden of disease...
January 6, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28079559/strategies-to-alter-the-natural-history-of-childhood-asthma
#15
K A Lee-Sarwar, L B Bacharier, A A Litonjua
PURPOSE OF REVIEW: Asthma exhibits significant heterogeneity in occurrence and severity over the lifespan. Our goal is to discuss recent evidence regarding determinants of the natural history of asthma during childhood, and review the rationale behind and status of major efforts to alter its course. RECENT FINDINGS: Variations in microbial exposures are associated with risk of allergic disease, and the use of bacterial lysates may be a promising preventive strategy...
January 11, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28076656/combined-inhaled-beta-agonist-and-anticholinergic-agents-for-emergency-management-in-adults-with-asthma
#16
REVIEW
Scott W Kirkland, Christine Vandenberghe, Britt Voaklander, Taylor Nikel, Sandra Campbell, Brian H Rowe
BACKGROUND: Inhaled short-acting anticholinergics (SAAC) and short-acting beta₂-agonists (SABA) are effective therapies for adult patients with acute asthma who present to the emergency department (ED). It is unclear, however, whether the combination of SAAC and SABA treatment is more effective in reducing hospitalisations compared to treatment with SABA alone. OBJECTIVES: To conduct an up-to-date systematic search and meta-analysis on the effectiveness of combined inhaled therapy (SAAC + SABA agents) vs...
January 11, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28076614/association-between-asthma-and-female-sex-hormones
#17
Raquel Prudente de Carvalho Baldaçara, Ivaldo Silva
CONTEXT AND OBJECTIVE: The relationship between sex hormones and asthma has been evaluated in several studies. The aim of this review article was to investigate the association between asthma and female sex hormones, under different conditions (premenstrual asthma, use of oral contraceptives, menopause, hormone replacement therapy and pregnancy). DESIGN AND SETTING: Narrative review of the medical literature, Universidade Federal do Tocantins (UFT) and Universidade Federal de São Paulo (Unifesp)...
January 5, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28076315/meteorological-parameters-and-pollutants-on-asthma-exacerbation-in-bangalore-india-an-ecological-retrospective-time-series-study
#18
Kirthana U Kunikullaya, Ambarish Vijayaraghava, P Asha, Radhika Kunnavil, B V MuraliMohan
BACKGROUND: Literature has shown a significant association between asthma exacerbations and pollutant levels during that time. There is very limited evidence in India, especially Bangalore, for impacts of meteorological changes and pollution on asthma hospital admissions in adults. The objective was to study the impact of air pollution and meteorological parameters on asthma exacerbation in Bangalore. METHODS: This study quantitatively analyzed the relation between acute exacerbations of asthma and related admissions to the hospital with the air pollution and the meteorological conditions during that time...
January 11, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28075198/impact-of-a-history-of-maternal-depression-and-anxiety-on-asthma-control-during-pregnancy
#19
Luke E Grzeskowiak, Brian Smith, Anil Roy, K Oliver Schubert, Bernhard T Baune, Gustaaf A Dekker, Vicki L Clifton
OBJECTIVE: To determine the impact of self-reported maternal depression/anxiety on asthma control during pregnancy. METHOD: Pregnant women with a doctor diagnosis of asthma (n = 189) were prospectively recruited at their antenatal booking visit and the presence of maternal depression and anxiety was identified using self-report and routine questionnaire assessments. Data on exacerbations and asthma control were collected during gestation. Asthma control was assessed using the Juniper asthma control questionnaire and women were classified as having recurrent uncontrolled asthma if their ACQ score was > 1...
January 11, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28069068/the-sygma-programme-of-phase-3-trials-to-evaluate-the-efficacy-and-safety-of-budesonide-formoterol-given-as-needed-in-mild-asthma-study-protocols-for-two-randomised-controlled-trials
#20
Paul M O'Byrne, J Mark FitzGerald, Nanshan Zhong, Eric Bateman, Peter J Barnes, Christina Keen, Gun Almqvist, Kristine Pemberton, Carin Jorup, Stefan Ivanov, Helen K Reddel
BACKGROUND: In many patients with mild asthma, the low frequency of symptoms and the episodic nature of exacerbations make adherence to regular maintenance treatment difficult. This often leads to over-reliance on short-acting β2-agonist (SABA) reliever medication and under-treatment of the underlying inflammation, with poor control of asthma symptoms and increased risk of exacerbations. The use of budesonide/formoterol 'as needed' in response to symptoms may represent an alternative treatment option for patients with mild asthma...
January 10, 2017: Trials
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