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Asthma biomarker

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https://www.readbyqxmd.com/read/28645880/biomarkers-of-airway-and-systemic-inflammation-in-obese-asthmatic-paediatric-patients
#1
H T Nacaroglu, O B Gayret, M Erol, O Buke, O Zengi, M Tasdemir, Z Tasdemir, O Yigit
BACKGROUND: It is thought that airway inflammation is more common in obese asthmatic patients because inflammation is harder to control and does not respond well to glucocorticoid treatment. OBJECTIVE: This study's aim was to investigate the effect of obesity on airway and systemic inflammation in children with asthma and to identify the biomarkers that play a role in this inflammation. METHODS: The study included patients aged 6-16 years who were diagnosed with asthma in the paediatric allergy outpatient clinic of Bagcilar Training and Research Hospital in Turkey...
June 20, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28642748/helicobacter-hygiene-atopy-and-asthma
#2
REVIEW
Muhammad Miftahussurur, Iswan A Nusi, David Y Graham, Yoshio Yamaoka
The hygiene hypothesis links environmental and microbial exposures in early life to the prevalence of atopy, allergy, and asthma. Helicobacter pylori infection is typically acquired in childhood and acquisition of the infection is associated with poor household hygiene. Some population surveys have shown an inverse association between H. pylori infection and atopy, allergy, and asthma leading to the suggestion that H. pylori infection may be protective against disease; others consider it simply a biomarker for poor household hygiene...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28635659/divergent-how-ige-axis-contributes-to-the-continuum-of-allergic-asthma-and-anti-ige-therapies
#3
REVIEW
Óscar Palomares, Silvia Sánchez-Ramón, Ignacio Dávila, Luis Prieto, Luis Pérez de Llano, Marta Lleonart, Christian Domingo, Antonio Nieto
Asthma is an airway disease characterised by chronic inflammation with intermittent or permanent symptoms including wheezing, shortness of breath, chest tightness, and cough, which vary in terms of their occurrence, frequency, and intensity. The most common associated feature in the airways of patients with asthma is airway inflammation. In recent decades, efforts have been made to characterise the heterogeneous clinical nature of asthma. The interest in improving the definitions of asthma phenotypes and endotypes is growing, although these classifications do not always correlate with prognosis nor are always appropriate therapeutic approaches...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28629752/rna-containing-exosomes-in-induced-sputum-of-asthmatic-patients
#4
Sara Sánchez-Vidaurre, Maria Eldh, Pia Larssen, Kameran Daham, Maria-Jose Martinez-Bravo, Sven-Erik Dahlén, Barbro Dahlén, Marianne van Hage, Susanne Gabrielsson
This is the first demonstration of RNA-containing exosomes in induced sputum from allergic asthmatic patients, both before and after an allergen provocation. Exosomes could serve as future candidate biomarkers in asthma.
June 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28626990/exhaled-breath-profiles-in-the-monitoring-of-loss-of-control-and-clinical-recovery-in-asthma
#5
Paul Brinkman, Marianne A van de Pol, Marije G Gerritsen, Lieuwe D Bos, Tamara Dekker, Barbara S Smids, Anirban Sinha, Christof J Majoor, Marlous M Sneeboer, Hugo H Knobel, Teunis J Vink, Frans H de Jongh, René Lutter, Peter J Sterk, Niki Fens
BACKGROUND: Asthma is a chronic inflammatory airway disease, associated with episodes of exacerbations. Therapy with inhaled corticosteroids (ICS) targets airway inflammation, which aims to maintain and restore asthma control. Clinical features are only modestly associated with airways inflammation. Therefore, we hypothesized that exhaled volatile metabolites identify longitudinal changes between clinically stable episodes and loss of asthma control. OBJECTIVES: To determine whether exhaled volatile organic compounds (VOCs) as measured by gas-chromatography / mass-spectrometry (GC/MS) and electronic nose (eNose) technology discriminate between clinically stable and unstable episodes of asthma...
June 19, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28624608/obesity-s-impact-on-asthma-extends-to-diagnostic-criteria
#6
Njira Lugogo, Cynthia L Green, Noah Agada, Siyi Zhang, Susanne Meghdadpour, Run Zhou, Siyun Yang, Kevin J Anstrom, Elliot Israel, Richard Martin, Robert F Lemanske, Homer Boushey, Stephen C Lazarus, Stephen I Wasserman, Mario Castro, William Calhoun, Stephen P Peters, Emily DiMango, Vernon Chinchilli, Nikolina Icitovic, Susan Kunselman, Tonya S King, Monica Kraft
BACKGROUND: The use of inflammatory biomarkers to delineate the type of lung inflammation present in asthma is increasingly common. However, the impact of obesity on these markers is unknown. OBJECTIVES: We aimed to determine the impact of obesity on conventional markers of inflammation in asthma. METHODS: We performed secondary analysis of data from 652 patients previously enrolled in two ACRN trials. We performed linear correlations between biomarkers and logistic regression analysis to determine the predictive value of IgE, blood eosinophils and FeNO in relationship to sputum eosinophils (>2%), as well as to determine if cut points existed that would maximize the sensitivity and specificity for predicting sputum eosinophilia in the three weight groups...
June 14, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28620605/regulation-of-eosinophil-recruitment-and-activation-by-galectins-in-allergic-asthma
#7
REVIEW
Savita P Rao, Xiao Na Ge, P Sriramarao
Eosinophils are differentiated granulocytes that are recruited from the bone marrow to sites of inflammation via the vascular system. Allergic asthma is characterized by the presence of large numbers of eosinophils in the lungs and airways. Due to their capacity to rapidly release inflammatory mediators such as cytokines, chemokines, growth factors, and cytotoxic granule proteins upon stimulation, eosinophils play a critical role in pro-inflammatory processes in allergen-exposed lungs. Identifying key players and understanding the molecular mechanisms directing eosinophil trafficking and recruitment to inflamed airways is a key to developing therapeutic strategies to limit their influx...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28619778/in-patients-with-severe-uncontrolled-asthma-does-knowledge-of-adherence-and-inhaler-technique-using-electronic-monitoring-improve-clinical-decision-making-a-protocol-for-a-randomised-controlled-trial
#8
Matshediso C Mokoka, Lorna Lombard, Elaine M MacHale, Joanne Walsh, Breda Cushen, Imran Sulaiman, Damien Mc Carthy, Fiona Boland, Frank Doyle, Eoin Hunt, Desmond M Murphy, John Faul, Marcus Butler, Kathy Hetherington, J Mark FitzGerald, Job Fm van Boven, Liam G Heaney, Richard B Reilly, Richard W Costello
INTRODUCTION: Many patients with asthma remain poorly controlled despite the use of inhaled corticosteroids and long-acting beta agonists. Poor control may arise from inadequate adherence, incorrect inhaler technique or because the condition is refractory. Without having an objective assessment of adherence, clinicians may inadvertently add extra medication instead of addressing adherence. This study aims to assess if incorporating objectively recorded adherence from the Inhaler Compliance Assessment (INCA) device and lung function into clinical decision making provides more cost-effective prescribing and improves outcomes...
June 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28600552/association-of-interleukin-12a-rs568408-with-susceptibility-to-asthma-in-taiwan
#9
Te-Chun Shen, Chia-Wen Tsai, Wen-Shin Chang, Shengyu Wang, Che-Yi Chao, Chieh-Lun Hsiao, Wei-Chun Chen, Te-Chun Hsia, Da-Tian Bau
Asthma is an inflammatory disease and interleukin 12 (IL-12) may play a regulatory role in allergen-induced inflammation. The aim of this study was to investigate the association of polymorphisms in IL-12A/IL-12B with asthma. The asthma group included 198 adult patients and the control group included 453 individuals without asthma that were frequency-matched by gender and age. The distribution of genotypic and allelic frequencies of IL-12A rs568408 demonstrated significant differences between case and control groups...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28599265/house-dust-endotoxin-and-peripheral-leukocyte-counts-results-from-two-large-epidemiologic-studies
#10
(no author information available yet)
BACKGROUND: The peripheral leukocyte count is a biomarker of inflammation and is associated with human all-cause mortality. Although causes of acute leukocytosis are well-described, chronic environmental determinants of leukocyte number are less well understood. OBJECTIVES: We investigated the relationship between house dust endotoxin concentration and peripheral leukocyte counts in human subjects. METHODS: The endotoxin-leukocyte relationship was evaluated by linear regression in the National Health and Nutrition Examination Survey (NHANES) 2005-2006 () and the Agricultural Lung Health Study (ALHS; )...
May 31, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28585516/salivary-sp-d-may-be-a-biomarker-reflecting-small-airway-inflammation-and-asthma-exacerbation
#11
S Okazaki, H Murai, S Kidoguchi, E Nomura, N Itoh, N Hashimoto, T Hamada, A Kawakita, M Yasutomi, Y Ohshima
BACKGROUND AND OBJECTIVE: Background: Noninvasive and child-friendly biomarkers are important tools for understanding the various phenotypes of childhood asthma. Objective: The aim of this study was to examine the usefulness of salivary surfactant protein (SP)-D in assessing the pathophysiology of childhood asthma. METHODS: We measured salivary concentrations of SP-D and forced oscillation technique (FOT) indexes in 19 healthy controls and 21 asthmatic children...
June 6, 2017: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/28583618/new-anti-eosinophil-drugs-for-asthma-and-copd-targeting-the-trait
#12
REVIEW
Elisabeth H Bel, Anneke Ten Brinke
Asthma and chronic obstructive airways disease (COPD) are prevalent chronic inflammatory airway diseases that are responsible for a large global disease burden. Both diseases are complex and heterogeneous, and are increasingly recognized as overlapping syndromes that may share similar pathophysiologic mechanisms and treatable traits. Eosinophilic airway inflammation is considered the most influential treatable trait of chronic airway disease, and over the last decade several monoclonal antibodies and small molecule therapies have been developed to target this trait...
June 2, 2017: Chest
https://www.readbyqxmd.com/read/28583261/cellular-and-noncellular-bloodborne-biomarkers-in-asthma
#13
REVIEW
Hannah Sinz, Harald Renz, Chrysanthi Skevaki
OBJECTIVE: To provide an overview of studied cellular and noncellular blood-derived asthma biomarkers. DATA SOURCES: PubMed literature review. STUDY SELECTIONS: Articles discussing cellular and noncellular bloodborne asthma biomarkers. RESULTS: Discussed asthma biomarkers include peripheral blood cell counts of T cells, fibrocytes, or granulocytes, as well as levels of cytokines, periostin, IgE, and lipid mediators with or without stimulation...
June 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28569614/stability-of-blood-eosinophil-count-in-patients-with-copd-in-the-uk-clinical-practice-research-datalink
#14
Sarah H Landis, Robert Suruki, Emma Hilton, Chris Compton, Nicholas W Galwey
Blood eosinophil counts may be predictive of corticosteroid response in chronic obstructive pulmonary disease (COPD) patients. However, little is known about measurement stability, which is important for understanding the utility of blood eosinophil counts as a potential biomarker. We evaluated the stability of blood eosinophil counts over 1 year in a population-based cohort of patients with COPD in primary care. Patients were aged ≥ 40 years with forced expiratory volume in 1 second/forced vital capacity < 0...
June 1, 2017: COPD
https://www.readbyqxmd.com/read/28553015/interluekin-35-in-asthma-and-its-potential-as-an-effective-therapeutic-agent
#15
REVIEW
Peng Gao, Zhenzhong Su, Xuejiao Lv, Jie Zhang
Interleukin- (IL-) 35 is a member of the IL-12 cytokine family and a heterodimeric protein formed by Epstein-Barr-induced gene 3 (EBI3) and IL-12p35. Emerging evidence shows that IL-35 is a key player in the regulation of cellular communication, differentiation, and inflammation. Altered IL-35 expression has been found in disease conditions such as cancer, rheumatoid arthritis, and, more recently, asthma. In cancer, IL-35 is involved in the regulation of tumorigenesis, cancer progression, and metastasis. In rheumatoid arthritis, IL-35 acts as a negative regulator of inflammation...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28527151/association-of-the-mir-196a2-mir-146a-and-mir-499-polymorphisms-with-asthma-phenotypes-in-a-korean-population
#16
Hoang Kim Tu Trinh, Duy Le Pham, Su-Chin Kim, Ri-Yeon Kim, Hae-Sim Park, Seung-Hyun Kim
BACKGROUND: MicroRNAs (miRNAs) modulate expressions of inflammatory genes, thereby regulating inflammatory responses. Single nucleotide polymorphisms (SNPs) in miRNAs could affect their efficiency in binding to messenger RNAs (mRNAs). OBJECTIVE: We investigated the associations of miRNA SNPs with asthma phenotypes. miR-196a2 (rs11614913 T>C), miR-146a (rs2910164 C>G), and miR-499 (rs3746444 A>G) were genotyped in 347 asthma patients and 172 normal healthy controls (NCs)...
May 19, 2017: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/28526665/the-sensor-study-protocol-for-a-mixed-methods-study-of-self-management-checks-to-predict-exacerbations-of-pseudomonas-aeruginosa-in-patients-with-long-term-respiratory-conditions
#17
Claire Roberts, Thomas L Jones, Samal Gunatilake, Will Storrar, Scott Elliott, Sharon Glaysher, Ben Green, Steven Rule, Carole Fogg, Ann Dewey, Kevin A Auton, Anoop J Chauhan
BACKGROUND: There are an estimated three million people in the United Kingdom with chronic obstructive pulmonary disease (COPD), and the incidence of bronchiectasis is estimated at around 0.1% but is more common in COPD and severe asthma. Both COPD and bronchiectasis are characterized by exacerbations in which bacteria play a central role. Pseudomonas aeruginosa is isolated from sputum samples from 4% to 15% of adults with COPD and is more likely to be isolated from patients with severe disease...
May 19, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28526278/biotherapeutics-in-chronic-rhinosinusitis-with-and-without-nasal-polyps
#18
Claus Bachert, Philippe Gevaert, Peter Hellings
In western countries, 85% of chronic rhinosinusitis with nasal polyp disease reveals a type 2 inflammatory pattern with expression of IL-4, -5, and -13 as well as increased concentrations of IgE, whereas chronic rhinosinusitis without nasal polyps merely expresses these biomarkers. The degree of type 2 inflammation furthermore is associated with disease severity, asthma comorbidity, and recurrence of disease after surgery. Therefore, these biomarkers also form the targets for innovative therapeutic approaches such as monoclonal antibodies directed against IgE, IL-5, and IL-4 receptor alpha, blocking the activity of IL-4 and -13...
May 16, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28513859/identification-of-a-plasma-mirna-biomarker-signature-for-allergic-asthma-a-translational-approach
#19
Katrin Milger, Jeremias Götschke, Linda Krause, Petra Nathan, Francesca Alessandrini, Amanda Tufman, Rainald Fischer, Sabine Bartel, Fabian J Theis, Jürgen Behr, Stefan Dehmel, Nikola S Mueller, Nikolaus Kneidinger, Susanne Krauss-Etschmann
BACKGROUND: Asthma is a heterogeneous chronic disease with different phenotypes and treatment responses. Thus, there is a high clinical need for molecular disease biomarkers to aid in differentiating these distinct phenotypes. As MicroRNAs (miRNAs), that regulate gene expression at the post-transcriptional level, are altered in experimental and human asthma, circulating miRNAs are attractive candidates for the identification of novel biomarkers. This study aimed to identify plasmatic miRNA-based biomarkers of asthma, through a translational approach...
May 17, 2017: Allergy
https://www.readbyqxmd.com/read/28513250/combined-measurements-of-fractional-exhaled-nitric-oxide-and-nasal-nitric-oxide-levels-for-assessing-upper-airway-diseases-in-asthmatic-patients
#20
Takamitsu Asano, Masaya Takemura, Yoshihiro Kanemitsu, Makoto Yokota, Kensuke Fukumitsu, Norihisa Takeda, Hiroya Ichikawa, Hisatoshi Hijikata, Takehiro Uemura, Osamu Takakuwa, Hirotsugu Ohkubo, Ken Maeno, Yutaka Ito, Tetsuya Oguri, Atsushi Nakamura, Yumi Maki, Yoshihisa Nakamura, Motohiko Suzuki, Akio Niimi
BACKGROUND: Despite the close linkage between rhinitis, chronic rhinosinusitis (CRS) and asthma, relevant biomarkers of both upper and lower airway inflammation are rare. METHODS: Patients with asthma (without upper airway disease [UAD; n = 24], with rhinitis [n = 25], CRS [n = 24], and nasal polyps [n = 2]), isolated rhinitis (n = 13), isolated CRS (n = 13), and 10 healthy controls were prospectively recruited. Fractional exhaled nitric oxide (NO) levels at 50 mL/s (FeNO50), nasal NO levels, Lund-Macay-scores of sinus computed tomography and an asthma control questionnaire (ACQ) were evaluated...
May 17, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
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