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Biomarker of asthma

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https://www.readbyqxmd.com/read/29334288/targeted-anti-il-13-therapies-in-asthma-current-data-and-future-perspectives
#1
Polyxeni Ntontsi, Evgenia Papathanassiou, Stelios Loukides, Petros Bakakos, Georgios Hillas
Introduction The identification of patients with severe asthma who will benefit from a personalized management approach remains an unmet need. Interleukin-13 (IL-13) is a cytokine possessing a significant role in asthma pathogenesis and progression of disease. Humanised monoclonal antibodies against IL-13 and IL-13 and IL-4 receptors are mainly proposed as add-on therapy in patients with TH2-high inflammation with uncontrolled asthma despite maximum therapy. Areas covered The role of IL-13 in airway inflammation in severe asthma, the targeted anti-IL-13 therapies and biomarkers that predict response to anti-IL-13 treatment are discussed...
January 15, 2018: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/29328030/modern-approaches-to-fractional-exhaled-nitric-oxide-as-a-useful-biomarker-for-allergic-asthma-phenotyping-and-management
#2
N Mgaloblishvili, M Gotua
Asthma is a pathologically heterogeneous disease, consisting of several phenotypes. Different types of airway inflammation are the cornerstone feature of this condition. Fraction of nitric oxide in exhaled air (FENO) has been proposed as a noninvasive, specific biomarker for eosinophilic airway inflammation and has been shown to be elevated in patients with allergic asthma phenotype. More recent studies indicate that FeNO identifies T-helper cell type 2 (Th2)-mediated airway inflammation with a high predictive value for identifying inhaled corticosteroid (ICS) responsive airway inflammation...
December 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29318959/novel-biological-therapies-in-severe-asthma-targeting-the-right-trait
#3
Gilda Varricchi, Giancarlo Marone, Giuseppe Spadaro, Michele Russo, Francescopaolo Granata, Arturo Genovese, Gianni Marone
Asthma is a heterogeneous disease characterized by chronic airway inflammation that results in a wide spectrum of clinical manifestations. Patients with severe asthma represent a substantial share of consumption of healthcare resources and hospitalization. Moreover, these patients are at risk of increased morbidity and mortality. Recently, several phenotypes and endotypes of asthma have been identified. The identification of specific subtypes of asthma is fundamental for optimizing the clinical benefit of novel treatments...
January 9, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29301585/a-randomised-pragmatic-trial-of-corticosteroid-optimization-in-severe-asthma-using-a-composite-biomarker-algorithm-to-adjust-corticosteroid-dose-versus-standard-care-study-protocol-for-a-randomised-trial
#4
Catherine E Hanratty, John G Matthews, Joseph R Arron, David F Choy, Ian D Pavord, P Bradding, Christopher E Brightling, Rekha Chaudhuri, Douglas C Cowan, Ratko Djukanovic, Nicola Gallagher, Stephen J Fowler, Tim C Hardman, Tim Harrison, Cécile T Holweg, Peter H Howarth, James Lordan, Adel H Mansur, Andrew Menzies-Gow, Sofia Mosesova, Robert M Niven, Douglas S Robinson, Dominick E Shaw, Samantha Walker, Ashley Woodcock, Liam G Heaney
BACKGROUND: Patients with difficult-to-control asthma consume 50-60% of healthcare costs attributed to asthma and cost approximately five-times more than patients with mild stable disease. Recent evidence demonstrates that not all patients with asthma have a typical type 2 (T2)-driven eosinophilic inflammation. These asthmatics have been called 'T2-low asthma' and have a minimal response to corticosteroid therapy. Adjustment of corticosteroid treatment using sputum eosinophil counts from induced sputum has demonstrated reduced severe exacerbation rates and optimized corticosteroid dose...
January 4, 2018: Trials
https://www.readbyqxmd.com/read/29284685/oxidative-stress-biomarkers-and-asthma-characteristics-in-adults-of-the-egea-study
#5
Miora Andrianjafimasy, Farid Zerimech, Zeina Akiki, Helene Huyvaert, Nicole Le Moual, Valérie Siroux, Régis Matran, Orianne Dumas, Rachel Nadif
Asthma is an oxidative stress related disease, but associations with asthma outcomes are poorly studied in adults. We aimed to study the associations between several biomarkers related to oxidative stress and various asthma outcomes.Cross-sectional analyses were conducted in 1388 adults (mean age 43 years, 44% with asthma) from the Epidemiological Study of the Genetics and Environment of Asthma (EGEA2). Three blood antioxidant enzyme activities (biomarkers of response to oxidative stress) and exhaled breath condensate 8-isoprostanes and plasma fluorescent oxidation products (FlOPs) levels (two biomarkers of damage) were measured...
December 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29283409/omentin-a-novel-adipokine-in-respiratory-diseases
#6
REVIEW
Yan Zhou, Bo Zhang, Caixia Hao, Xiaoting Huang, Xiaohong Li, Yanhong Huang, Ziqiang Luo
Adipokines, secreted by the adipose tissue, are extensively involved in the regulation and maintenance of various physiological and pathological processes, including insulin sensitivity, energy expenditure, glucose and lipid metabolism, inflammatory activity, neuroendocrine activity, immunity, cancer, homeostasis, angiogenesis, cardiovascular function, breeding and bone metabolism, and all functions of the endocrine-reproductive system axis. Omentin is a recently identified adipokine, which has become a research hotspot due to its pleiotropic effects on various diseases...
December 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29279792/personalized-medicine-in-preschool-children-with-asthma
#7
Hengameh Raissy, Kathryn Blake
A growing body of literature has investigated optimizing asthma management by identifying phenotypes and biomarkers to guide the treatment. In particular, management of asthma in preschool children remains challenging due to different phenotype presentation in early life. The focus of this review is to summarize the recent data on personalized medicine in management of preschool children with wheezing.
December 1, 2017: Pediatric Allergy, Immunology, and Pulmonology
https://www.readbyqxmd.com/read/29279059/systemic-inflammation-mediates-the-detrimental-effects-of-obesity-on-asthma-control
#8
Xin Zhang, Jing Zheng, Li Zhang, Ying Liu, Gai Ping Chen, Hong Ping Zhang, Lei Wang, De Ying Kang, Lisa G Wood, Gang Wang
BACKGROUND: Obesity negatively impacts asthma control, but the inflammatory mechanisms are poorly understood. OBJECTIVE: To explore which systemic inflammatory mediators mediate the effects of obesity on asthma control. METHODS: The subjects with stable asthma (n = 108) underwent assessment of clinical characteristics, which included using The Asthma Control Questionnaire (ACQ)-6. Obesity was defined as a body mass index (BMI) of ≥30 kg/m2, overweight was defined as BMI between 25 to 29...
January 2, 2018: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/29273246/asthma
#9
REVIEW
Alberto Papi, Christopher Brightling, Søren E Pedersen, Helen K Reddel
Asthma-one of the most common chronic, non-communicable diseases in children and adults-is characterised by variable respiratory symptoms and variable airflow limitation. Asthma is a consequence of complex gene-environment interactions, with heterogeneity in clinical presentation and the type and intensity of airway inflammation and remodelling. The goal of asthma treatment is to achieve good asthma control-ie, to minimise symptom burden and risk of exacerbations. Anti-inflammatory and bronchodilator treatments are the mainstay of asthma therapy and are used in a stepwise approach...
December 19, 2017: Lancet
https://www.readbyqxmd.com/read/29249824/associations-of-genetic-determinants-of-serum-vitamin-b12-and-folate-concentrations-with-hay-fever-and-asthma-a-mendelian-randomization-meta-analysis
#10
Tea Skaaby, Amy E Taylor, Rikke K Jacobsen, Line T Møllehave, Nele Friedrich, Betina H Thuesen, Daniel Mønsted Shabanzadeh, Lavinia Paternoster, Uwe Völker, Matthias Nauck, Henry Völzke, Marcus Munafò, Torben Hansen, Oluf Pedersen, Torben Jørgensen, Niels Grarup, Allan Linneberg
BACKGROUND/OBJECTIVES: Studies of the effect of vitamin B12 and folate on the risk of asthma and hay fever have shown inconsistent results that may be biased by reverse causation and confounding. We used a Mendelian randomization approach to examine a potential causal effect of vitamin B12 and folate on hay fever, asthma, and selected biomarkers of allergy by using 11 vitamin B12-associated single-nucleotide polymorphisms (SNPs) and 2 folate-associated SNPs as unconfounded markers. SUBJECTS/METHODS: We included 162,736 participants from 9 population-based studies including the UK Biobank...
December 18, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29249106/-ige-sensitization-and-sociodemographic-conditions-as-determinant-factors-in-asthma-severity
#11
Rodrigo Gaviria, Jaime Ocampo, Julián Londoño, Víctor Calvo, Ricardo Cardona, Jorge Sánchez
BACKGROUND: In Latin America there are few data about the factors that influence the control and severity of asthma. OBJECTIVE: To describe the association between IgE sensitization to intra-home allergens and housing conditions in the severity of asthma. METHODS: Sensitization to aero-allergens was evaluated by skin prick test and socio-demographic data by a questionnaire in a population between 6 and 14 years of age with diagnosis of asthma...
October 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/29244031/transition-and-post-transition-metals-in-exhaled-breath-condensate
#12
Andrew Ghio, Michael C Madden, Charles R Esther
Water vapor in expired air, as well as dispersed non-volatile components, condense onto a cooler surface after exiting the respiratory tract. This exhaled breath condensate (EBC) provides a dilute sampling of the epithelial lining fluid. Accordingly, the collection of EBC imparts a capacity to provide biomarkers of injury preceding clinical disease. Concentrations of transition and post-transition metals in EBC are included among these endpoints. Iron and zinc are those metals in highest concentration and are measurable in all EBC samples from healthy subjects; other metals are most frequently either at or below the level of detection in this group...
December 15, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/29238905/biologic-agents-for-severe-asthma-patients-clinical-perspectives-and-implications
#13
REVIEW
Massimo Caruso, Jaymin Morjaria, Rosalia Emma, Maria Domenica Amaradio, Riccardo Polosa
Asthma is a chronic inflammatory multifactorial disorder of the airways characterized by the involvement of immune cells and mediators in its onset and maintenance. Traditional therapeutic strategies have been unsatisfactory in controlling the underlying pathology, especially in the more severe states. Hence in the last couple of decades, new biological approaches targeting molecular mediators have been developed. In this narrative review we examine biological agents currently available for the management of severe asthma, focusing our attention on their clinical application, pros and cons, and in particular on gaps regarding the use of these agents...
December 14, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/29231896/differential-expression-of-serum-micrornas-supports-cd4%C3%A2-%C2%BA-t-cell-differentiation-into-th2-th17-cells-in-severe-equine-asthma
#14
Alicja Pacholewska, Matthias F Kraft, Vincent Gerber, Vidhya Jagannathan
MicroRNAs (miRNAs) regulate post-transcriptional gene expression and may be exported from cells via exosomes or in partnership with RNA-binding proteins. MiRNAs in body fluids can act in a hormone-like manner and play important roles in disease initiation and progression. Hence, miRNAs are promising candidates as biomarkers. To identify serum miRNA biomarkers in the equine model of asthma we investigated small RNA derived from the serum of 34 control and 37 asthmatic horses. These samples were used for next generation sequencing, novel miRNA identification and differential miRNA expression analysis...
December 12, 2017: Genes
https://www.readbyqxmd.com/read/29229196/impact-of-allergy-on-phenotypic-and-endotypic-profiles-of-nasal-polyposis
#15
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/29227024/blood-biomarkers-as-predictors-of-long-term-mortality-in-copd
#16
Angelico Mendy, Erick Forno, Theophile Niyonsenga, Janvier Gasana
BACKGROUND: Blood biomarkers are easily accessible and might reflect chronic obstructive pulmonary disease (COPD) activity. AIM: The aim of this study was to determine whether a panel of blood biomarkers [C-reactive protein (CRP), neutrophils, eosinophils, albumin and vitamin D] could predict mortality in COPD. METHODS: We analyzed data from 431 COPD participants to the 2007-2010 National Health and Nutrition Examination Surveys who were followed for a median time of 36 months...
December 11, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29221817/polyunsaturated-fatty-acids-in-plasma-at-8%C3%A2-years-and-subsequent-allergic-disease
#17
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
#18
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/29221580/mechanisms-of-allergen-immunotherapy-for-inhaled-allergens-and-predictive-biomarkers
#19
REVIEW
Mohamed H Shamji, Stephen R Durham
Allergen immunotherapy is effective in patients with IgE-dependent allergic rhinitis and asthma. When immunotherapy is given continuously for 3 years, there is persistent clinical benefit for several years after its discontinuation. This disease-modifying effect is both antigen-specific and antigen-driven. Clinical improvement is accompanied by decreases in numbers of effector cells in target organs, including mast cells, basophils, eosinophils, and type 2 innate lymphoid cells. Immunotherapy results in the production of blocking IgG/IgG4 antibodies that can inhibit IgE-dependent activation mediated through both high-affinity IgE receptors (FcεRI) on mast cells and basophils and low-affinity IgE receptors (FcεRII) on B cells...
December 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29212488/identification-of-the-lipid-biomarkers-from-plasma-in-idiopathic-pulmonary-fibrosis-by-lipidomics
#20
Feng Yan, Zhensong Wen, Rui Wang, Wenling Luo, Yufeng Du, Wenjun Wang, Xianyang Chen
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is an irreversible interstitial pulmonary disease featured by high mortality, chronic and progressive course, and poor prognosis with unclear etiology. Currently, more studies have been focusing on identifying biomarkers to predict the progression of IPF, such as genes, proteins, and lipids. Lipids comprise diverse classes of molecules and play a critical role in cellular energy storage, structure, and signaling. The role of lipids in respiratory diseases, including cystic fibrosis, asthma and chronic obstructive pulmonary disease (COPD) has been investigated intensely in the recent years...
December 6, 2017: BMC Pulmonary Medicine
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