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https://www.readbyqxmd.com/read/29240514/menopausal-asthma-much-ado-about-nothing-an-observational-study
#1
Katarzyna Bialek-Gosk, Marta Maskey-Warzechowska, Rafal Krenke, Marta Dabrowska, Magdalena Paplinska-Goryca, Patrycja Nejman-Gryz, Joanna Domagala-Kulawik, Tadeusz Przybylowski, Ryszarda Chazan
OBJECTIVE: Menopausal asthma is considered a distinct asthma phenotype. Our aim was to identify potential specific features of asthma in postmenopausal women in a cohort of Polish females. METHODS: Asthma severity and control, pulmonary function, exhaled nitric oxide (FENO), peripheral blood and induced sputum (IS) differential cell count were compared in three groups: women with premenopausal asthma (group 1), menopausal women with pre-existing asthma (group 2A) and menopausal women with asthma onset in the perimenopausal or menopausal period (group 2B)...
December 14, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/29234167/the-setdb2-locus-evidence-for-a-genetic-link-between-handedness-and-atopic-disease
#2
Bernard Crespi, Silven Read, Peter Hurd
The gene SETDB2, which mediates aspects of laterality in animal model systems, has recently been linked with human handedness as measured continuously on a scale from strong left to strong right. By contrast, it was marginally associated with a left-right dichotomous measure, and it showed no evidence of association with absolute handedness strength independent of direction. We genotyped the SETDB2 handedness-associated single nucleotide polymorphism, rs4942830, in a large healthy population likewise phenotyped for continuous, absolute, and dichotomous handedness variables...
January 2018: Heredity
https://www.readbyqxmd.com/read/29232822/microglia-m2a-polarization-as-potential-link-between-food-allergy-and-autism-spectrum-disorders
#3
REVIEW
Hans O Kalkman, Dominik Feuerbach
Atopic diseases are frequently co-morbid with autism spectrum disorders (ASD). Allergic responses are associated with an activation of mast cells, innate lymphoid cells, and Th2 cells. These cells produce type-2 cytokines (IL4 and IL13), which stimulate microglia and macrophages to adopt a phenotype referred to as 'alternative activation' or 'M2A'. M2A-polarized macrophages and microglia play a physiological role in tissue repair by secreting growth factors such as brain-derived neurotrophic factor (BDNF) and insulin-like growth factor-1...
December 9, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/29229196/impact-of-allergy-on-phenotypic-and-endotypic-profiles-of-nasal-polyposis
#4
G Mortuaire, I Gengler, M Balden, M Capron, G Lefèvre
OBJECTIVES: To assess the impact of allergy on clinical presentations (phenotypes) and inflammatory patterns (endotypes) of chronic rhinosinusitis with nasal polyps (CRSwNP). METHODS: A single-center prospective study was conducted over an 18-month period. Fifty-seven patients with refractory CRSwNP were included. The diagnosis of allergy was based on concordant skin prick tests and symptoms. Phenotypes were determined on symptom severity score, polyp size classification and Lund-Mackay CT staging...
December 8, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/29225050/inhibition-of-the-mitochondrial-calcium-uniporter-prevents-il-13-and-allergen-mediated-airway-epithelial-apoptosis-and-loss-of-barrier-function
#5
Sara C Sebag, Olha M Koval, John D Paschke, Christopher J Winters, Alejandro P Comellas, Isabella M Grumbach
Mitochondria are increasingly recognized as key mediators of acute cellular stress responses in asthma. However, the distinct roles of regulators of mitochondrial physiology on allergic asthma phenotypes are currently unknown. The mitochondrial Ca2+ uniporter (MCU) resides in the inner mitochondrial membrane and controls mitochondrial Ca2+ uptake into the mitochondrial matrix. To understand the function of MCU in models of allergic asthma, in vitro and in vivo studies were performed using models of functional deficiency or knockout of MCU...
December 7, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29221817/polyunsaturated-fatty-acids-in-plasma-at-8%C3%A2-years-and-subsequent-allergic-disease
#6
Jessica Magnusson, Sandra Ekström, Inger Kull, Niclas Håkansson, Sara Nilsson, Magnus Wickman, Erik Melén, Ulf Risérus, Anna Bergström
BACKGROUND: Polyunsaturated fatty acids (PUFAs) are hypothesized to modulate the risk of allergic disease. However, evidence from previous studies is inconclusive, and limited longitudinal data exist using circulating biomarkers of PUFA intake and metabolism. OBJECTIVE: We aimed to investigate associations between n-3 and n-6 PUFAs at age 8 years and asthma, rhinitis, and aeroallergen sensitization at age 16 years. METHODS: Proportions of n-3 PUFAs (very long-chain n-3 [VLC n-3; sum of eicosapentaenoic acid, docosapentaenoic acid, and docosahexaenoic acid] and α-linolenic acid) and n-6 PUFAs (linoleic acid and arachidonic acid [AA]) in blood samples at age 8 years were measured for 940 children from the prospective Swedish birth cohort BAMSE (Children, Allergy, Milieu, Stockholm, Epidemiology)...
November 29, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29221581/biomarkers-for-severe-eosinophilic-asthma
#7
REVIEW
Steven W Yancey, Oliver N Keene, Frank C Albers, Hector Ortega, Stewart Bates, Eugene R Bleecker, Ian Pavord
The last decade has seen the approval of several new biologics for the treatment of severe asthma-targeting specific endotypes and phenotypes. This review will examine how evidence generated from the mepolizumab clinical development program showed that blood eosinophil counts, rather than sputum or tissue eosinophil counts, evolved as a pharmacodynamic and predictive biomarker for the efficacy of treatment with mepolizumab in patients with severe eosinophilic asthma. Based on the available evidence and combined with clinical judgement, a baseline blood eosinophil threshold of 150 cells/μL or greater or a historical blood eosinophil threshold of 300 cells/μL or greater will allow selection of patients with severe eosinophilic asthma who are most likely to achieve clinically significant reductions in the rate of exacerbations with mepolizumab treatment...
December 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29221262/differences-in-airway-remodeling-and-airway-inflammation-among-moderate-severe-asthma-clinical-phenotypes
#8
Wen-Jing Ye, Wei-Guo Xu, Xue-Jun Guo, Feng-Feng Han, Juan Peng, Xiao-Ming Li, Wen-Bin Guan, Li-Wei Yu, Jin-Yuan Sun, Zhi-Lei Cui, Lin Song, Yue Zhang, Yan-Min Wang, Tian-Yun Yang, Xia-Hui Ge, Di Yao, Song Liu
Background: To identify asthma clinical phenotypes using cluster analysis and improve our understanding of heterogeneity in asthma. Methods: Clustering approaches were applied to 203 patients who were diagnosed with asthma in XinHua Hospital (January 2012 to December 2015). One hundred and twenty patients underwent multi-slice spiral computed tomography (MSCT) examination and 30 underwent bronchial mucosal biopsy for evaluation of airway remodeling and airway inflammation among the phenotypes...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29220719/house-dust-mite-allergen-causes-certain-features-of-steroid-resistant-asthma-in-high-fat-fed-obese-mice
#9
Vijay Pal Singh, Ulaganathan Mabalirajan, Kunal Pratap, Devika Bahal, Deepanshu Maheswari, Atish Gheware, Aabha Bajaj, Lipsa Panda, Ashish Jaiswal, Arjun Ram, Anurag Agrawal
Obesity is a high risk factor for diseases such as cardiovascular, metabolic syndrome and asthma. Obese-asthma is another emerging phenotype in asthma which is typically refractive to steroid treatment due to its non-classical features such as non-eosinophilic cellular inflammation. The overall increased morbidity, mortality and economical burden in asthma is mainly due to steroid resistant asthma. In the present study, we used high fat diet induced obese mice which when sensitized with house dust mite (HDM) showed steroid resistant features...
December 4, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29217600/asthma-phenotypes-do-cough-and-wheeze-predict-exacerbations-in-persistent-asthma
#10
Jaymin B Morjaria, Alan S Rigby, Alyn H Morice
Little is known of the long-term symptom profile in uncontrolled asthma and whether symptoms can predict distinct phenotypes. The primary objective of these analyses was to assess diurnal profile of cough and wheeze in an uncontrolled asthma population. Secondary outcomes were to examine how these symptom profiles influence response to treatment.Twice-daily electronically recorded data from 1701 patients were examined in relation to the population demographics. Reliever treatment with salbutamol was then compared with extra-fine beclometasone/formoterol maintenance and reliever therapy (MART)...
December 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29217598/phenotypes-of-symptomatic-airways-disease-in-china-and-new-zealand
#11
James Fingleton, Kewu Huang, Mark Weatherall, Yanfei Guo, Stefan Ivanov, Piet Bruijnzeel, Hong Zhang, Wei Wang, Richard Beasley, Chen Wang
It is uncertain whether phenotypes of asthma and chronic obstructive pulmonary disease (COPD) vary between populations with different genetic and environmental characteristics. Here, our objective was to compare the phenotypes of airways disease in two separate populations.This was a cross-sectional observational study in adult populations from New Zealand and China. Participants aged 40-75 years who reported wheeze and breathlessness in the last 12 months were randomly selected from the general population and underwent detailed characterisation...
December 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29216678/-guideline-for-the-diagnosis-and-treatment-of-asthma-guideline-of-the-german-respiratory-society-and-the-german-atemwegsliga-in-cooperation-with-the-paediatric-respiratory-society-and-the-austrian-society-of-pneumology
#12
R Buhl, R Bals, X Baur, D Berdel, C-P Criée, M Gappa, A Gillissen, T Greulich, P Haidl, E Hamelmann, P Kardos, K Kenn, L Klimek, S Korn, M Lommatzsch, H Magnussen, T Nicolai, D Nowak, O Pfaar, K F Rabe, J Riedler, T Ritz, K Schultz, A Schuster, T Spindler, R C Taube, K Taube, C Vogelmeier, A von Leupold, F Wantke, S Weise, J Wildhaber, H Worth, A Zacharasiewicz
The present guideline is a new version and an update of the guideline for the diagnosis and treatment of asthma, which replaces the previous version for german speaking countries from the year 2006. The wealth of new data on the pathophysiology and the phenotypes of asthma, and the expanded spectrum of diagnostic and therapeutic options necessitated a new version and an update. This guideline presents the current, evidence-based recommendations for the diagnosis and treatment of asthma, for children and adolescents as well as for adults with asthma...
December 2017: Pneumologie
https://www.readbyqxmd.com/read/29212496/pulmonary-function-exhaled-nitric-oxide-and-symptoms-in-asthma-patients-with-obesity-a-cross-sectional-study
#13
Marise J Kasteleyn, Tobias N Bonten, Renée de Mutsert, Willemien Thijs, Pieter S Hiemstra, Saskia le Cessie, Frits R Rosendaal, Niels H Chavannes, Christian Taube
BACKGROUND: Obesity is a risk factor for the development of asthma. In patients with obesity the diagnosis of asthma is often based on symptoms, but without objective measurements. Nevertheless, obesity-associated asthma is recognized as a distinct asthma phenotype. Therefore, this study explores lung function and symptoms in asthma patients with and without obesity. METHODS: The Netherlands Epidemiology of Obesity (NEO) study is a population-based cohort study with 6671 participants (aged 45-65 years) of whom 472 had asthma...
December 7, 2017: Respiratory Research
https://www.readbyqxmd.com/read/29211611/pregnancy-associated-plasma-protein-a-papp-a-levels-in-patients-with-severe-allergic-asthma-are-reduced-by-omalizumab
#14
Ismet Bulut, Zeynep F Ozseker, Abdurrahman Coskun, Mustafa Serteser, Ibrahim Unsal
BACKGROUND: Remodeling is a crucial feature of severe asthma and may be associated with activation of the allergic cascade by immunoglobulin E (IgE). Omalizumab, an anti-IgE monoclonal antibody, effectively targets the severe allergic asthma phenotype. Pregnancy-associated plasma protein-A (PAPP-A) is an insulin-like growth factor binding protein-4 (IGFBP-4) protease, increasing local insulin-like growth factor (IGF)-1 concentrations, which in turn initiating a cascade involved in the regulation of cell growth, differentiation, and proliferation in various tissues...
December 6, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/29210519/air-pollutants-may-be-environmental-risk-factors-in-chronic-rhinosinusitis-disease-progression
#15
Leila J Mady, Hannah L Schwarzbach, John A Moore, Robert M Boudreau, Thomas J Willson, Stella E Lee
BACKGROUND: Little is known about the role of environmental exposures in the pathophysiology of chronic rhinosinusitis (CRS). In this study, we measured the impact of air pollutants (particulate matter 2.5 [PM2.5 ] and black carbon [BC]) on CRS with nasal polyposis (CRSwNP) and CRS without nasal polyposis (CRSsNP). METHODS: Spatial modeling from pollutant monitoring sites was used to estimate exposures surrounding residences for patients meeting inclusion criteria (total patients, n = 234; CRSsNP, n = 96; CRSwNP, n = 138)...
December 6, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29202821/effects-of-treatment-changes-on-asthma-phenotype-prevalence-and-airway-neutrophil-function
#16
Collin R Brooks, Christine J Van Dalen, Elizabeth Harding, Ian F Hermans, Jeroen Douwes
BACKGROUND: Asthma inflammatory phenotypes are often defined by relative cell counts of airway eosinophils/neutrophils. However, the importance of neutrophilia remains unclear, as does the effect of ICS treatment on asthma phenotypes and airway neutrophil function. The purpose of this study was to assess asthma phenotype prevalence/characteristics in a community setting, and, in a nested preliminary study, determine how treatment changes affect phenotype stability and inflammation, with particular focus on airway neutrophils...
December 4, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29197547/further-studies-of-unsuspected-emphysema-in-non-smoking-asthmatics-with-persistent-expiratory-airflow-obstruction
#17
Arthur F Gelb, Alfred Yamamoto, Eric K Verbeken, Mark J Schein, Roxanna Moridzadeh, Diem Tran, Christine Fraser, Richard Barbers, Wafaa Elatre, Michael N Koss, Eric F Glassy, Jay A Nadel
BACKGROUND: Previously, we and other investigators have described reversible loss of lung elastic recoil in acute and persistent loss in moderate-to-severe, chronic, treated asthmatics who never smoked, and its adverse effect on maximal expiratory airflow. In 4 consecutive autopsies, the pathophysiologic mechanism(s)has been unsuspected mild, diffuse, middle and upper lobe centrilobular emphysema. METHODS: We performed prospective studies (5-22 years) in 25(12F) chronic asthmatics age 55±15 yr who never smoked, with persistent moderate-to-severe expiratory obstruction...
November 29, 2017: Chest
https://www.readbyqxmd.com/read/29197105/upper-and-lower-airway-remodelling-mechanisms-in-asthma-allergic-rhinitis-and-chronic-rhinosinusitis-the-one-airway-concept-revisited
#18
REVIEW
Konstantinos Samitas, Alison Carter, Harsha H Kariyawasam, Georgina Xanthou
Allergic rhinitis (AR), chronic rhinosinusitis (CRS) and asthma often co-exist. The one airway model proposes that disease mechanisms occurring in the upper airway may mirror lower airway events. Airway remodelling is the term used to describe tissue structural changes that occur in a disease setting and reflect the dynamic process of tissue restructuring during wound repair. Remodelling has been long identified in the lower airways in asthma and is characterized by epithelial shedding, goblet cell hyperplasia, basement membrane thickening, subepithelial fibrosis, airway smooth muscle hyperplasia and increased angiogenesis...
December 1, 2017: Allergy
https://www.readbyqxmd.com/read/29193245/review-article-gastro-oesophageal-reflux-disease-in-asthma-and-chronic-obstructive-pulmonary-disease
#19
REVIEW
C Broers, J Tack, A Pauwels
BACKGROUND: When gastro-oesophageal reflux is causing symptoms or lesions in the oesophagus, this is referred to as gastro-oesophageal reflux disease (GERD). GERD can manifest itself through typical symptoms (heartburn, regurgitation) or may lead to extra-oesophageal symptoms. Extra-oesophageal manifestations of GERD gained increasing attention over the last decade, especially respiratory disorders, because of the prevalent co-occurrence with GERD. The role of GERD in the pathogenesis of respiratory disorders has become a topic of intense discussion...
November 29, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29189350/asthma-personalized-and-precision-medicine
#20
Giorgio W Canonica, Matteo Ferrando, Ilaria Baiardini, Francesca Puggioni, Francesca Racca, Giovanni Passalacqua, Enrico Heffler
PURPOSE OF REVIEW: In this review, we herein describe the progress in management of severe asthma, evolving from a 'blockbuster approach' to a more personalized approach targeted to the utilization of endotype-driven therapies. RECENT FINDINGS: Severe asthma characterization in phenotypes and endotypes, by means of specific biomarkers, have led to the dichotomization of the concepts of 'personalized medicine' and 'precision medicine', which are often used as synonyms, but actually have conceptual differences in meaning...
November 16, 2017: Current Opinion in Allergy and Clinical Immunology
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