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Asthma cluster analysis

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https://www.readbyqxmd.com/read/28428554/network-assisted-analysis-of-gwas-data-identifies-a-functionally-relevant-gene-module-for-childhood-onset-asthma
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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(0x39f7950) 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(0x398d718) 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
#7
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...
March 29, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28363401/neutrophilic-steroid-refractory-recurrent-wheeze-and-eosinophilic-steroid-refractory-asthma-in-children
#8
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
#9
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
#10
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
#11
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
#12
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
https://www.readbyqxmd.com/read/28298259/phenotypic-analysis-of-asthma-in-japanese-athletes
#13
Keisuke Tsukioka, Toshiyuki Koya, Hiroshi Ueno, Masachika Hayashi, Takuro Sakagami, Takashi Hasegawa, Masaaki Arakawa, Eiichi Suzuki, Toshiaki Kikuchi
BACKGROUND: Asthma in athlete populations such as Olympic athletes has various pathogeneses. However, few reports are available on the features of asthma in the athlete population in clinical practice. In this study, we focused on classifying asthma in Japanese athlete population. METHODS: We performed a cluster analysis of data from pulmonary function tests and clinical biomarkers before administering inhaled corticosteroids (ICS) therapy in athlete population of individuals diagnosed with asthma (n = 104; male, 76...
March 12, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28293414/galectin-3-an-early-predictive-biomarker-of-modulation-of-airway-remodeling-in-patients-with-severe-asthma-treated-with-omalizumab-for-36%C3%A2-months
#14
Anna Maria Riccio, Pierluigi Mauri, Laura De Ferrari, Rossana Rossi, Dario Di Silvestre, Louise Benazzi, Alessandra Chiappori, Roberto Walter Dal Negro, Claudio Micheletto, Giorgio Walter Canonica
BACKGROUND: Bronchial asthma is a heterogeneous disease characterized by three cardinal features: chronic inflammation, variable airflow obstruction, and airway hyperresponsiveness. Asthma has traditionally been defined using nonspecific clinical and physiologic variables that encompass multiple phenotypes and are treated with nonspecific anti-inflammatory therapies. Based on the modulation of airway remodeling after 12 months of anti-immunoglobulin E (IgE) treatment, we identified two phenotypes (omalizumab responder, OR; and non-omalizumab responder, NOR) and performed morphometric analysis of bronchial biopsy specimens...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/28288272/interventions-to-improve-inhaler-technique-for-people-with-asthma
#15
REVIEW
Rebecca Normansell, Kayleigh M Kew, Alexander G Mathioudakis
BACKGROUND: Asthma is a common chronic disease worldwide. Inhalers are often prescribed to help control asthma symptoms, improve quality of life and reduce the risk of exacerbations or flare-ups. However, evidence suggests that many people with asthma do not use their inhaler correctly. It is therefore important to evaluate whether interventions aimed specifically at improving technique are effective and safe, and whether use of these interventions translates into improved clinical outcomes...
March 13, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28283935/application-of-multivariate-statistical-analysis-in-the-pollution-and-health-risk-of-traffic-related-heavy-metals
#16
Mohammad Ebqa'ai, Bashar Ibrahim
This study aims to analyse the heavy metal pollutants in Jeddah, the second largest city in the Gulf Cooperation Council with a population exceeding 3.5 million, and many vehicles. Ninety-eight street dust samples were collected seasonally from the six major roads as well as the Jeddah Beach, and subsequently digested using modified Leeds Public Analyst method. The heavy metals (Fe, Zn, Mn, Cu, Cd, and Pb) were extracted from the ash using methyl isobutyl ketone as solvent extraction and eventually analysed by atomic absorption spectroscopy...
March 10, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28278278/dynamic-changes-of-the-respiratory-microbiota-and-its-relationship-to-fecal-and-blood-microbiota-in-healthy-young-cats
#17
Aida I Vientós-Plotts, Aaron C Ericsson, Hansjorg Rindt, Megan E Grobman, Amber Graham, Kaitlin Bishop, Leah A Cohn, Carol R Reinero
Advances in the field of metagenomics using culture-independent methods of microbial identification have allowed characterization of rich and diverse communities of bacteria in the lungs of healthy humans, mice, dogs, sheep and pigs. These data challenge the long held belief that the lungs are sterile and microbial colonization is synonymous with pathology. Studies in humans and animals demonstrate differences in the composition of airway microbiota in health versus disease suggesting respiratory dysbiosis occurs...
2017: PloS One
https://www.readbyqxmd.com/read/28275137/a-ceacam6-high-airway-neutrophil-phenotype-and-ceacam6-high-epithelial-cells-are-features-of-severe-asthma
#18
Aarti Shikotra, David F Choy, Salman Siddiqui, Greer Arthur, Deepti R Nagarkar, Guiquan Jia, Adam K A Wright, Chandra M Ohri, Emma Doran, Claire A Butler, Beverley Hargadon, Alexander R Abbas, Janet Jackman, Lawren C Wu, Liam G Heaney, Joseph R Arron, Peter Bradding
Severe asthma represents a major unmet clinical need; understanding the pathophysiology is essential for the development of new therapies. Using microarray analysis, we previously found three immunological clusters in asthma: Th2-high, Th17-high, and Th2/17-low. Although new therapies are emerging for Th2-high disease, identifying molecular pathways in Th2-low disease remains an important goal. Further interrogation of our previously described microarray dataset revealed upregulation of gene expression for carcinoembryonic Ag cell adhesion molecule (CEACAM) family members in the bronchi of patients with severe asthma...
March 8, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28179442/t-helper-cell-type-2-th2-and-non-th2-molecular-phenotypes-of-asthma-using-sputum-transcriptomics-in-u-biopred
#19
Chih-Hsi Scott Kuo, Stelios Pavlidis, Matthew Loza, Fred Baribaud, Anthony Rowe, Iaonnis Pandis, Ana Sousa, Julie Corfield, Ratko Djukanovic, Rene Lutter, Peter J Sterk, Charles Auffray, Yike Guo, Ian M Adcock, Kian Fan Chung
Asthma is characterised by heterogeneous clinical phenotypes. Our objective was to determine molecular phenotypes of asthma by analysing sputum cell transcriptomics from 104 moderate-to-severe asthmatic subjects and 16 nonasthmatic subjects.After filtering on the differentially expressed genes between eosinophil- and noneosinophil-associated sputum inflammation, we used unbiased hierarchical clustering on 508 differentially expressed genes and gene set variation analysis of specific gene sets.We defined three transcriptome-associated clusters (TACs): TAC1 (characterised by immune receptors IL33R, CCR3 and TSLPR), TAC2 (characterised by interferon-, tumour necrosis factor-α- and inflammasome-associated genes) and TAC3 (characterised by genes of metabolic pathways, ubiquitination and mitochondrial function)...
February 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28143694/quantitative-computed-tomographic-imaging-based-clustering-differentiates-asthmatic-subgroups-with-distinctive-clinical-phenotypes
#20
Sanghun Choi, Eric A Hoffman, Sally E Wenzel, Mario Castro, Sean Fain, Nizar Jarjour, Mark L Schiebler, Kun Chen, Ching-Long Lin
BACKGROUND: Imaging variables, including airway diameter, wall thickness, and air trapping, have been found to be important metrics when differentiating patients with severe asthma from those with nonsevere asthma and healthy subjects. OBJECTIVE: The objective of this study was to identify imaging-based clusters and to explore the association of the clusters with existing clinical metrics. METHODS: We performed an imaging-based cluster analysis using quantitative computed tomography-based structural and functional variables extracted from the respective inspiration and expiration scans of 248 asthmatic patients...
January 29, 2017: Journal of Allergy and Clinical Immunology
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