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Asthma cluster analysis

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https://www.readbyqxmd.com/read/28704185/phenotypes-determined-by-cluster-analysis-in-moderate-to-severe-bronchial-asthma
#1
Vania M Youroukova, Denitsa G Dimitrova, Anna D Valerieva, Spaska S Lesichkova, Tsvetelina V Velikova, Ekaterina I Ivanova-Todorova, Kalina D Tumangelova-Yuzeir
BACKGROUND: Bronchial asthma is a heterogeneous disease that includes various subtypes. They may share similar clinical characteristics, but probably have different pathological mechanisms. AIM: To identify phenotypes using cluster analysis in moderate to severe bronchial asthma and to compare differences in clinical, physiological, immunological and inflammatory data between the clusters. PATIENTS AND METHODS: Forty adult patients with moderate to severe bronchial asthma out of exacerbation were included...
June 1, 2017: Folia Medica
https://www.readbyqxmd.com/read/28696842/factors-associated-with-in-school-physical-activity-among-urban-children-with-asthma
#2
Marina Reznik, Florinda Islamovic, Jaeun Choi, Cheng-Shiun Leu, Alex V Rowlands
OBJECTIVE: A cross-sectional study was conducted to determine if in-school physical activity (PA) varied by age, gender, weight and asthma status, participation in physical education (PE), outdoor recess, and other in-school PA among urban schoolchildren with asthma. METHODS: PA was measured by tri-axial accelerometers. Height and mass were measured and overweight defined as BMI ≥85(th) percentile. Asthma impairment and risk were assessed as per national guidelines and asthma status variable with 3 categories (mild, moderate and severe) was created...
July 11, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28693976/effectiveness-of-the-spirometry-360%C3%A2-quality-improvement-program-for-improving-asthma-care-a-cluster-randomized-trial
#3
Rita Mangione-Smith, Chuan Zhou, Michael J Corwin, James A Taylor, Fiona Rice, James W Stout
OBJECTIVE: To determine the effectiveness of the Spirometry 360™ distance learning quality improvement (QI) program for enhancing the processes and outcomes of care for children with asthma. METHODS: Cluster randomized controlled trial involving 25 matched pairs of pediatric primary care practices. Practices were recruited from two practice-based research networks: the Slone Center Office-based Research Network at Boston University, Boston, MA and the Puget Sound Pediatric Research Network in Seattle, WA...
July 7, 2017: Academic Pediatrics
https://www.readbyqxmd.com/read/28658564/a-clustering-approach-to-identify-and-characterize-the-asthma-and-chronic-obstructive-pulmonary-disease-overlap-phenotype
#4
Keita Hirai, Toshihiro Shirai, Masayuki Suzuki, Taisuke Akamatsu, Takahito Suzuki, Ichiro Hayashi, Akito Yamamoto, Takefumi Akita, Satoru Morita, Kazuhiro Asada, Daiki Tsuji, Kazuyuki Inoue, Kunihiko Itoh
BACKGROUND: Asthma and chronic obstructive pulmonary disease (COPD) are heterogeneous diseases. The phenotypes that have clinical features of both asthma and COPD are still incompletely understood. OBJECTIVE: To clarify the best discriminators of the asthma-COPD overlap phenotype from asthma and COPD subgroups using a clustering approach. METHODS: This study assessed pathophysiological parameters, including mRNA expression levels of T helper cell-related transcription factors, namely, TBX21 (Th1), GATA3 (Th2), RORC (Th17), and FOXP3 (Treg), in peripheral blood mononuclear cells in asthma patients (n = 152) and in COPD patients (n = 50)...
June 28, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28637835/do-copd-subtypes-really-exist-copd-heterogeneity-and-clustering-in-10-independent-cohorts
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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(0x36505b0) 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(0x325dd30) 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
#19
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
#20
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
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