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Asthma cluster analysis

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https://www.readbyqxmd.com/read/28637835/do-copd-subtypes-really-exist-copd-heterogeneity-and-clustering-in-10-independent-cohorts
#1
Peter J Castaldi, Marta Benet, Hans Petersen, Nicholas Rafaels, James Finigan, Matteo Paoletti, H Marike Boezen, Judith M Vonk, Russell Bowler, Massimo Pistolesi, Milo A Puhan, Josep Anto, Els Wauters, Diether Lambrechts, Wim Janssens, Francesca Bigazzi, Gianna Camiciottoli, Michael H Cho, Craig P Hersh, Kathleen Barnes, Stephen Rennard, Meher Preethi Boorgula, Jennifer Dy, Nadia N Hansel, James D Crapo, Yohannes Tesfaigzi, Alvar Agusti, Edwin K Silverman, Judith Garcia-Aymerich
BACKGROUND: COPD is a heterogeneous disease, but there is little consensus on specific definitions for COPD subtypes. Unsupervised clustering offers the promise of 'unbiased' data-driven assessment of COPD heterogeneity. Multiple groups have identified COPD subtypes using cluster analysis, but there has been no systematic assessment of the reproducibility of these subtypes. OBJECTIVE: We performed clustering analyses across 10 cohorts in North America and Europe in order to assess the reproducibility of (1) correlation patterns of key COPD-related clinical characteristics and (2) clustering results...
June 21, 2017: Thorax
https://www.readbyqxmd.com/read/28617945/microrna-cluster-106a-363-is-involved-in-t-helper-17-th17-cell-differentiation
#2
Marc Kaestle, Sabine Bartel, Kerstin Geillinger-Kästle, Martin Irmler, Johannes Beckers, Bernhard Ryffel, Oliver Eickelberg, Susanne Krauss-Etschmann
T-helper cell 17 (Th17) mediated inflammation is associated with various diseases including autoimmune encephalitis, inflammatory bowel disease and lung diseases such as chronic obstructive pulmonary disease and asthma. Differentiation into distinct Th subtypes needs to be tightly regulated to ensure an immunological balance. As microRNAs (miRNAs) are critical regulators of signaling pathways, we aimed to identify specific miRNAs implicated in controlling Th17 differentiation. We were able to create a regulatory network model of murine Th cell differentiation by combining Affymetrix mRNA and miRNA arrays and in-silico analysis...
June 15, 2017: Immunology
https://www.readbyqxmd.com/read/28598986/computational-analysis-of-multimorbidity-between-asthma-eczema-and-rhinitis
#3
Daniel Aguilar, Mariona Pinart, Gerard H Koppelman, Yvan Saeys, Martijn C Nawijn, Dirkje S Postma, Mübeccel Akdis, Charles Auffray, Stéphane Ballereau, Marta Benet, Judith García-Aymerich, Juan Ramón González, Stefano Guerra, Thomas Keil, Manolis Kogevinas, Bart Lambrecht, Nathanael Lemonnier, Erik Melen, Jordi Sunyer, Rudolf Valenta, Sergi Valverde, Magnus Wickman, Jean Bousquet, Baldo Oliva, Josep M Antó
BACKGROUND: The mechanisms explaining the co-existence of asthma, eczema and rhinitis (allergic multimorbidity) are largely unknown. We investigated the mechanisms underlying multimorbidity between three main allergic diseases at a molecular level by identifying the proteins and cellular processes that are common to them. METHODS: An in silico study based on computational analysis of the topology of the protein interaction network was performed in order to characterize the molecular mechanisms of multimorbidity of asthma, eczema and rhinitis...
2017: PloS One
https://www.readbyqxmd.com/read/28514199/drawing-asthma-an-exploration-of-patients-perceptions-and-experiences
#4
Melissa Mei Yin Cheung, Bandana Saini, Lorraine Smith
OBJECTIVE: As an art form, drawings can facilitate the tangible expression of patients' inner images and feelings in a range of health conditions. However, there are currently no published studies investigating adults' perspectives of asthma using drawings. This study aimed to explore how adults' drawings illustrate their perceptions and experiences of asthma. METHODS: Adults with asthma participated in a one-on-one drawing activity. Analysis was grounded in the participants' accounts of their drawing, which were examined alongside the relevant image...
May 17, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28489959/mood-disorders-in-adult-asthma-phenotypes
#5
Marina Labor, Slavica Labor, Iva Jurić, Vladimir Fijačko, Sanja Popović Grle, Davor Plavec
OBJECTIVE: Studies show high comorbidity of mood disorders in asthma. As asthma is a highly heterogeneous disease with different phenotypes it can be expected that there is a difference in this association with different asthma phenotypes. The aim of our cross-sectional study was to assess the association of specific asthma phenotypes with anxiety and/or depression and their impact on asthma control. METHODS: A cross-sectional study in 201 consecutive adult outpatients with asthma (≥18 years of age) was conducted...
May 10, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28472499/a-pharmacy-management-service-for-adults-with-asthma-a-cluster-randomised-controlled-trial
#6
Lai-Yan Wong, Siew-Siang Chua, Abdul-Rahman Husin, Hanisah Arshad
Background.: Although clinical guidelines are available for the management of asthma, this health condition is still poorly managed in many countries. Objectives.: To assess the effects of a Pharmacy Management Service (PharMS) on asthma control of adult patients. Methods.: This study comprised of a cluster randomised controlled trial (RCT) that was conducted from April 2014 to July 2015 at four government health clinics. The control participants received usual pharmacy service, while the intervention participants were recruited into the PharMS...
May 3, 2017: Family Practice
https://www.readbyqxmd.com/read/28459349/mindfulness-and-asthma-symptoms-a-study-among-college-students
#7
Lu Shi, Di Liang, Yu Gao, Jiayan Huang, Cameron Nolan, Andrew Mulvaney, Taryn Poole, Hailin Zhang
INTRODUCTION: Given the known link between asthma and stress as well as the link between mindfulness and stress, we explore the possible association between trait mindfulness and asthma-related diagnosis and symptoms with a cross-sectional study. METHOD: In 2014, we surveyed a sample of college students in their freshman year, from a public university in Shanghai, China. We used three multilevel logistic regressions to estimate the association between trait mindfulness (measured by Mindful Awareness Attention Scale, MAAS) and self-report of ever having an asthma diagnosis, ever having had persistent dry cough, and ever having had wheezing symptoms...
May 1, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28452071/oxidative-stress-in-asthmatic-and-non-asthmatic-adolescent-swimmers-a-breathomics-approach
#8
Mariana Couto, Corália Barbosa, Diana Silva, Alisa Rudnitskaya, Luís Delgado, André Moreira, Sílvia M Rocha
We hypothesize that oxidative stress induced by trichloramine exposure during swimming could be related to etiopathogenesis of asthma among elite swimmers. AIM: To investigate the effect of a swimming training session on oxidative stress markers of asthmatic compared to non-asthmatic elite swimmers using exhaled breath (EB) metabolomics. METHODS: Elite swimmers annually screened in our department (n=27) were invited and those who agreed to participate (n=20, of which 9 with asthma) had EB collected (Tedlar(®) bags) before and after a swimming training session...
April 27, 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/28428554/network-assisted-analysis-of-gwas-data-identifies-a-functionally-relevant-gene-module-for-childhood-onset-asthma
#9
Y Liu, M Brossard, C Sarnowski, A Vaysse, M Moffatt, P Margaritte-Jeannin, F Llinares-López, M H Dizier, M Lathrop, W Cookson, E Bouzigon, F Demenais
The number of genetic factors associated with asthma remains limited. To identify new genes with an undetected individual effect but collectively influencing asthma risk, we conducted a network-assisted analysis that integrates outcomes of genome-wide association studies (GWAS) and protein-protein interaction networks. We used two GWAS datasets, each consisting of the results of a meta-analysis of nine childhood-onset asthma GWASs (5,924 and 6,043 subjects, respectively). We developed a novel method to compute gene-level P-values (fastCGP), and proposed a parallel dense-module search and cross-selection strategy to identify an asthma-associated gene module...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421600/lay-led-and-peer-support-interventions-for-adolescents-with-asthma
#10
REVIEW
Kayleigh M Kew, Robin Carr, Iain Crossingham
BACKGROUND: Adolescents with asthma are at high risk of poor adherence with treatment. This may be compounded by activities that worsen asthma, in particular smoking. Additional support above and beyond routine care has the potential to encourage good self-management. We wanted to find out whether sessions led by their peers or by lay leaders help to reduce these risks and improve asthma outcomes among adolescents. OBJECTIVES: To assess the safety and efficacy of lay-led and peer support interventions for adolescents with asthma...
April 19, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28417456/interventions-to-improve-adherence-to-inhaled-steroids-for-asthma
#11
REVIEW
Rebecca Normansell, Kayleigh M Kew, Elizabeth Stovold
BACKGROUND: Despite its proven efficacy in improving symptoms and reducing exacerbations, many patients with asthma are not fully adherent to their steroid inhaler. Suboptimal adherence leads to poorer clinical outcomes and increased health service utilisation, and has been identified as a contributing factor to a third of asthma deaths in the UK. Reasons for non-adherence vary, and a variety of interventions have been proposed to help people improve treatment adherence. OBJECTIVES: To assess the efficacy and safety of interventions intended to improve adherence to inhaled corticosteroids among people with asthma...
April 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28402017/asthma-education-for-school-staff
#12
REVIEW
Kayleigh M Kew, Robin Carr, Tim Donovan, Morris Gordon
BACKGROUND: Teachers and school staff should be competent in managing asthma in schools. Demonstrated low levels of asthma knowledge mean that staff may not know how best to protect a child with asthma in their care, or may fail to take appropriate action in the event of a serious attack. Education about asthma could help to improve this knowledge and lead to better asthma outcomes for children. OBJECTIVES: To assess the effectiveness and safety of asthma education programmes for school staff, and to identify content and attributes underpinning them...
April 12, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28389304/cluster-analysis-on-longitudinal-data-of-patients-with-adult-onset-asthma
#13
Pinja Ilmarinen, Leena E Tuomisto, Onni Niemelä, Minna Tommola, Jussi Haanpää, Hannu Kankaanranta
BACKGROUND: Previous cluster analyses on asthma are based on cross-sectional data. OBJECTIVE: To identify phenotypes of adult-onset asthma by using data from baseline (diagnostic) and 12-year follow-up visits. METHODS: The Seinäjoki Adult Asthma Study is a 12-year follow-up study of patients with new-onset adult asthma. K-means cluster analysis was performed by using variables from baseline and follow-up visits on 171 patients to identify phenotypes...
April 4, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28383714/a-systems-approach-identifies-time-dependent-associations-of-multimorbidities-with-pancreatic-cancer-risk
#14
P Gomez-Rubio, V Rosato, M Marquez, C Bosetti, E Molina-Montes, M Rava, J Piñero, C W Michalski, A Farré, X Molero, M Löhr, L Ilzarbe, J Perea, W Greenhalf, M O'Rorke, A Tardón, T Gress, V M Barberà, T Crnogorac-Jurcevic, L Muñoz-Bellvís, E Domínguez-Muñoz, A Gutiérrez-Sacristán, J Balsells, E Costello, C Guillén-Ponce, J Huang, M Iglesias, J Kleeff, B Kong, J Mora, L Murray, D O'Driscoll, P Peláez, I Poves, R T Lawlor, A Carrato, M Hidalgo, A Scarpa, L Sharp, L I Furlong, F X Real, C La Vecchia, N Malats
Background: HASH(0x36888b8) Pancreatic ductal adenocarcinoma (PDAC) is usually diagnosed in late adulthood; therefore, many patients suffer or have suffered from other diseases. Identifying disease-patterns associated with PDAC risk may enable a better characterization of high-risk patients. Methods: HASH(0x3099918) Multimorbidity patterns (MPs) were assessed from 17 self-reported conditions using hierarchical clustering, principal component, and factor analyses in 1705 PDAC cases and 1084 controls from a European population...
April 5, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28364972/association-of-atopy-phenotypes-with-new-development-of-asthma-and-bronchial-hyperresponsiveness-in-school-aged-children
#15
Eun Lee, Si Hyeon Lee, Young-Ho Kim, Hyun-Ju Cho, Jisun Yoon, Song-I Yang, Young-Ho Jung, Hyung Young Kim, Ju-Hee Seo, Ji-Won Kwon, Hyo-Bin Kim, So Yeon Lee, Ho-Jang Kwon, Soo-Jong Hong
BACKGROUND: Although previous studies have investigated the association between atopy phenotypes and allergic diseases, atopy characterizations in association with the development of allergic diseases remain poorly understood. OBJECTIVE: To identify atopy phenotypes in school-age children and to evaluate the association between atopy phenotypes and allergic diseases. METHODS: We enrolled 616 children with atopy defined as 1 or more positive allergen responses on skin prick tests and 665 children without atopy from the Children's Health and Environmental Research (CHEER) study...
May 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28363401/neutrophilic-steroid-refractory-recurrent-wheeze-and-eosinophilic-steroid-refractory-asthma-in-children
#16
Tamazoust Guiddir, Philippe Saint-Pierre, Elsa Purenne-Denis, Nathalie Lambert, Yacine Laoudi, Rémy Couderc, Rahelé Gouvis-Echraghi, Flore Amat, Jocelyne Just
BACKGROUND: Little is known about inflammatory pathways of severe recurrent wheeze in preschool children and severe asthma in children. OBJECTIVES: The aim of the Severe Asthma Molecular Phenotype cohort was to characterize phenotypes of severe recurrent wheeze and severe asthma during childhood in terms of triggers (allergic or not), involved cells (eosinophil or neutrophil), and corticoid responsiveness. METHODS: Children with moderate-to-severe asthma and preschool children with moderate-to-severe recurrent wheeze were enrolled prospectively...
March 28, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28347735/novel-sensitization-trajectories-in-childhood-revealed-by-a-cluster-analysis
#17
Ann-Marie M Schoos, Bo L Chawes, Erik Melén, Anna Bergström, Inger Kull, Magnus Wickman, Klaus Bønnelykke, Hans Bisgaard, Morten A Rasmussen
BACKGROUND: Assessment of sensitization at an isolated time-point during childhood provides limited clinical information. We hypothesized that sensitization develops as specific patterns with respect to age at debut, development over time, and involved allergens, and that such patterns might be more biologically and clinically relevant. OBJECTIVE: To explore latent patterns of sensitization during the first 6 years of life and investigate whether such patterns associate to development of asthma, rhinitis, and eczema...
March 24, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28346028/prevalence-and-associated-factors-for-self-reported-asthma-in-a-canadian-population-the-canadian-community-health-survey-2014
#18
Luan M Chu, Punam Pahwa
BACKGROUND: Asthma prevalence is increasing among adults, yet limited information regarding the association between adult asthma and environmental and personal exposures is available using large nationally representative population-based survey. OBJECTIVE: To determine the prevalence of asthma and associated factors for self-reported asthma in a Canadian population aged 12 years and older by using the Canadian Community Health Survey (CCHS) 2014 cross-sectional cohort...
March 27, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28319180/effect-of-outdoor-air-pollution-on-asthma-exacerbations-in-children-and-adults-systematic-review-and-multilevel-meta-analysis
#19
Pablo Orellano, Nancy Quaranta, Julieta Reynoso, Brenda Balbi, Julia Vasquez
BACKGROUND: Several observational studies have suggested that outdoor air pollution may induce or aggravate asthma. However, epidemiological results are inconclusive due to the presence of numerous moderators which influence this association. The goal of this study was to assess the relationship between outdoor air pollutants and moderate or severe asthma exacerbations in children and adults through a systematic review and multilevel meta-analysis. MATERIAL AND METHODS: We searched studies published in English on PubMed, Scopus, and Google Scholar between January 2000 and October 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28318759/asthma-education-taught-by-physical-education-teachers-at-grade-schools-a-randomised-cluster-trial
#20
M Praena-Crespo, N Aquino-Llinares, J C Fernández-Truan, L Castro-Gómez, C Segovia-Ferrera
OBJECTIVE: Assess whether the Asthma, Sport and Health (ASAH) programme taught by teachers improves asthmatics' quality of life, asthma knowledge, and reduces school absenteeism. DESIGN: Randomised cluster trial parallel group. PARTICIPANTS: 2293 students (203 asthmatic) in the Intervention School group (IS) and 2214 in the Comparison School (CS) (224 asthmatic) belonging to primary school. INTERVENTION: Implementation of the educational programme "Asthma, Sport and Health" at grade schools, taught by physical education teachers...
March 15, 2017: Allergologia et Immunopathologia
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