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Asthma biomarker

K Białek-Gosk, R Rubinsztajn, S Białek, M Paplińska-Goryca, R Krenke, R Chazan
Aging and menopause are closely related to hormonal and metabolic changes. Vitamin D is a crucial factor modulating several metabolic processes. The aim of this study was to evaluate biomarkers of bone metabolism in peri- and postmenopausal women with obstructive lung diseases. Sixty two female patients, 27 with asthma and 35 with COPD, aged over 45 years (median age 58 and 64 years, respectively) were enrolled into the study. The evaluation included lung function, bone mineral density, serum concentration of vitamin D, and bone metabolism markers...
March 22, 2018: Advances in Experimental Medicine and Biology
Sarah Landis, Robert Suruki, Joe Maskell, Kerina Bonar, Emma Hilton, Chris Compton
Blood eosinophil count may be a useful biomarker for predicting response to inhaled corticosteroids and exacerbation risk in chronic obstructive pulmonary disease (COPD) patients. The optimal cut point for categorizing blood eosinophil counts in these contexts remains unclear. We aimed to determine the distribution of blood eosinophil count in COPD patients and matched non-COPD controls, and to describe demographic and clinical characteristics at different cut points. We identified COPD patients within the UK Clinical Practice Research Database aged ≥40 years with a FEV1 /FVC <0...
March 20, 2018: COPD
Garry M Walsh
A marked heterogeneity is exhibited by asthma both clinically and at the molecular level with different phenotypes driven by diverse mechanistic pathways that require specifically targeted treatments. Biologics aimed at IL-4/13, IL-5 or IgE are proven or potentially effective treatments for patients with difficult to treat eosinophilic asthma. Importantly, it is now widely accepted that biologic-based therapies give significant clinical improvements in those patient populations where asthma phenotypes are taken into account...
March 20, 2018: Immunotherapy
Akifumi Uchida, Kohta Sakaue, Hiromasa Inoue
The term "asthma-COPD overlap" (ACO) has been applied to the condition in which a person has persistent airflow limitation with clinical features of both asthma and COPD. The certain definition and diagnostic criteria for ACO have not yet been established, and ACO prevalence has varied widely in studies: from 0.9% to 11.1% in the general population, from 11.1% to 61.0% in asthma patients, and from 4.2% to 66.0% in COPD patients. Furthermore, the frequency of exacerbations and prognosis in ACO patients have not been clearly demonstrated...
March 15, 2018: Allergology International: Official Journal of the Japanese Society of Allergology
Jessie P Buckley, Lesliam Quirós-Alcalá, Susan L Teitelbaum, Antonia M Calafat, Mary S Wolff, Stephanie M Engel
BACKGROUND: Prenatal environmental phenol and phthalate exposures may alter immune or inflammatory responses leading to respiratory and allergic disease. OBJECTIVES: We estimated associations of prenatal environmental phenol and phthalate biomarkers with respiratory and allergic outcomes among children in the Mount Sinai Children's Environmental Health Study. METHODS: We quantified urinary biomarkers of benzophenone-3, bisphenol A, paradichlorobenzene (as 2,5-dichlorophenol), triclosan, and 10 phthalate metabolites in third trimester maternal samples and assessed asthma, wheeze, and atopic skin conditions via parent questionnaires at ages 6 and 7 years (n = 164 children with 240 observations)...
March 15, 2018: Environment International
Charles-Antoine Guilloux, Claudie Lamoureux, Geneviève Héry-Arnaud
Lungs were considered as sterile for a long time. However, it is now evident that the lungs of healthy people are colonized by microorganisms. Among the bacteria present in the pulmonary microbiota, a significant proportion is anaerobic (strict or facultative). Even though interest in the pulmonary microbiota is increasing, few studies have focused on these unknowns that represent the lung resident anaerobic bacteria. This review describes the biodiversity of anaerobes in physiological conditions, and in different chronic respiratory diseases (cystic fibrosis, COPD, asthma)...
March 2018: Médecine Sciences: M/S
Romano Endrighi, Elizabeth L McQuaid, Yvonne Kiera Bartlett, Ashley H Clawson, Belinda Borrelli
Background: Depressive symptoms are elevated in parents of asthmatic children compared with parents of healthy children. The role of depression in smoking cessation and pediatric asthma outcomes in this population is unclear. Purpose: To prospectively examine the effect of parent depression on smoking cessation and child asthma outcomes. Methods: Secondary analysis from a cessation induction trial involving Motivational Interviewing (MI) and biomarker feedback on secondhand smoke exposure (SHSe)...
February 17, 2018: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
Eleftherios Zervas, Konstantinos Samitas, Andriana I Papaioannou, Petros Bakakos, Stelios Loukides, Mina Gaga
A small subgroup of patients with asthma suffers from severe disease that is either partially controlled or uncontrolled despite intensive, guideline-based treatment. These patients have significantly impaired quality of life and although they constitute <5% of all asthma patients, they are responsible for more than half of asthma-related healthcare costs. Here, we review a definition for severe asthma and present all therapeutic options currently available for these severe asthma patients. Moreover, we suggest a specific algorithmic treatment approach for the management of severe, difficult-to-treat asthma based on specific phenotype characteristics and biomarkers...
January 2018: ERJ Open Research
Camille Ribeyre, Federico Carlini, Céline René, François Jordier, Christophe Picard, Jacques Chiaroni, Laurent Abi-Rached, Philippe Gouret, Grégory Marin, Nicolas Molinari, Pascal Chanez, Julien Paganini, Delphine Gras, Julie Di Cristofaro
Human leukocyte antigen (HLA)-G, a HLA class Ib molecule, interacts with receptors on lymphocytes such as T cells, B cells, and natural killer cells to influence immune responses. Unlike classical HLA molecules, HLA-G expression is not found on all somatic cells, but restricted to tissue sites, including human bronchial epithelium cells (HBEC). Individual variation in HLA-G expression is linked to its genetic polymorphism and has been associated with many pathological situations such as asthma, which is characterized by epithelium abnormalities and inflammatory cell activation...
2018: Frontiers in Immunology
Michael C Peters, Sheena Kerr, Eleanor M Dunican, Prescott G Woodruff, Merritt L Fajt, Bruce D Levy, Elliot Israel, Brenda R Phillips, David T Mauger, Suzy A Comhair, Serpil C Erzurum, Mats W Johansson, Nizar N Jarjour, Andrea M Coverstone, Mario Castro, Annette T Hastie, Eugene R Bleecker, Sally E Wenzel, John V Fahy
BACKGROUND: Airway type 2 inflammation is usually corticosteroid sensitive, but the role of type 2 inflammation as a mechanism of asthma in patients on high dose inhaled corticosteroids (ICS) is uncertain. OBJECTIVE: To determine if airway type 2 inflammation persists in patients treated with ICS and to evaluate the clinical features of patients with steroid resistant airway type-2 inflammation. METHODS: We used qPCR to generate a composite metric of type-2 cytokine gene expression (type 2 Gene Mean, "T2GM") in induced sputum cells from healthy controls, severe asthma patients on ICS (n=174), and non-severe asthma patients on ICS (n=85)...
March 7, 2018: Journal of Allergy and Clinical Immunology
Mina Fazlollahi, Tricia D Lee, Jade Andrade, Kasopefoluwa Oguntuyo, Yoojin Chun, Galina Grishina, Alexander Grishin, Supinda Bunyavanich
BACKGROUND: Nasal microbiota may influence asthma pathobiology. OBJECTIVE: We sought to characterize the nasal microbiome of subjects with exacerbated asthma, non-exacerbated asthma, and healthy controls to identify nasal microbiota associated with asthma activity. METHODS: 16S rRNA sequencing was performed on nasal swabs obtained from 72 primarily adult subjects with exacerbated asthma (n=20), non-exacerbated asthma (n=31), and healthy controls (n=21)...
March 5, 2018: Journal of Allergy and Clinical Immunology
J J Nieto-Fontarigo, F J Salgado, M E San-José, M J Cruz, A Casas-Fernández, M J Gómez-Conde, L Valdés-Cuadrado, M Á García-González, P Arias, M Nogueira, F J González-Barcala
LPS-ligation to CD14/TLR-4 on monocytes/macrophages triggers the production of IL-12-family cytokines. IL12/18 promote TH1 -differentiation, counteracting the TH2 -driven asthma. Therefore, CD14 modulation could alter the TH2 -differentiation and should be taken into account when studying asthma. To analyse the alteration in CD14 levels and its association with CD14 (-159 C/T) SNP (rs2569190) in Caucasian adults with stable allergic asthma, we performed a cross-sectional study (277 healthy subjects vs. 277 patients) where clinical parameters, CD14 values and the CD14 (-159 C/T) SNP were studied...
March 7, 2018: Scientific Reports
Sam Clifford, Mandana Mazaheri, Farhad Salimi, Wafaa Nabil Ezz, Bijan Yeganeh, Samantha Low-Choy, Katy Walker, Kerrie Mengersen, Guy B Marks, Lidia Morawska
It is known that ultrafine particles (UFP, particles smaller than 0.1 μm) can penetrate deep into the lungs and potentially have adverse health effects. However, epidemiological data on the health effects of UFP is limited. Therefore, our objective was to test the hypothesis that exposure to UFPs is associated with respiratory health status and systemic inflammation among children aged 8 to 11 years. We conducted a cross-sectional study among 655 children (43.3% male) attending 25 primary (elementary) schools in the Brisbane Metropolitan Area, Australia...
March 4, 2018: Environment International
Bo Sun, Linnan Zhu, Yaling Tao, Hai-Xi Sun, Yang Li, Peng Wang, Yuzhu Hou, Yang Zhao, Xiaodong Zhang, Lianfeng Zhang, Ning Na, Yong Zhao
Neutrophils are involved in the pathogenesis of allergy. However, the contribution of the different functionally polarized neutrophils in allergy needs to be clarified. We sought to define the characteristics of interleukin (IL)-33-induced neutrophils and the involvement of this subset of polarized neutrophils in allergic pathogenesis. Freshly isolated neutrophils were treated with different cytokines and the cytokine expression levels were detected by real-time PCR. The gene expression profile of IL-33-induced neutrophils was determined by microarray assay...
March 5, 2018: Cellular & Molecular Immunology
Hye Jung Park, Eun-Yi Oh, Yoon Hee Park, Misuk Yang, Kyung Hee Park, Jung-Won Park, Jae-Hyun Lee
BACKGROUND: CD93 is a membrane-associated glycoprotein, which can be released in a soluble form (sCD93) into the serum. CD93 has received renewed attention as a candidate biomarker of inflammation in various inflammatory and immune-mediated diseases, including asthma. OBJECTIVE: We aimed to evaluate the effects of airway inflammation on CD93 levels in murine models. METHODS: We established an ovalbumin (OVA)-induced acute asthma murine model (OVA model) and a lipopolysaccharide (LPS)-induced airway inflammation murine model (LPS model)...
March 2, 2018: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
Niloufar Farzan, Susanne J Vijverberg, Michael Kabesch, Peter J Sterk, Anke H Maitland-van der Zee
Asthma is a complex multifactorial disease and it is the most common chronic disease in children. There is a high variability in response to asthma treatment, even in patients with good adherence to maintenance treatment, and a correct inhalation technique. Distinct underlying disease mechanisms in childhood asthma might be the reason of this heterogeneity. A deeper knowledge of the underlying molecular mechanisms of asthma has led to the recent development of advanced and mechanism-based treatments such as biologicals...
March 1, 2018: Pediatric Pulmonology
G M Oakley, J M Christensen, R Sacks, P Earls, R J Harvey
INTRODUCTION: The anti-inflammatory effects of long term low dose macrolide therapy have shown benefit in the management of diffuse panbronchiolitis. Dramatic responses to macrolide in the upper airway are seen but our understanding of the patient phenotype predisposing to macrolide response in chronic rhinosinusitis (CRS) is poor. METHODS: A case control study was performed in a tertiary level rhinology practice of consecutive chronic rhinosinusitis patients placed on a 3-month low dose macrolide therapy after failing at least 3 months of corticosteroid irrigation therapy post-endoscopic sinus surgery...
February 24, 2018: Rhinology
Grith L Sorensen
Surfactant protein D (SP-D) is a multimeric collectin that is involved in innate immune defense and expressed in pulmonary, as well as non-pulmonary, epithelia. SP-D exerts antimicrobial effects and dampens inflammation through direct microbial interactions and modulation of host cell responses via a series of cellular receptors. However, low protein concentrations, genetic variation, biochemical modification, and proteolytic breakdown can induce decomposition of multimeric SP-D into low-molecular weight forms, which may induce pro-inflammatory SP-D signaling...
2018: Frontiers in Medicine
Silvia Carraro, Sara Bozzetto, Giuseppe Giordano, Dania El Mazloum, Matteo Stocchero, Paola Pirillo, Stefania Zanconato, Eugenio Baraldi
BACKGROUND: Many children of preschool age present with recurrent wheezing. Most of them outgrow their symptoms, while some have early-onset asthma. Aim of this prospective preliminary study was to apply a metabolomic approach to see whether biochemical-metabolic urinary profiles can have a role in the early identification of the children with asthma. METHODS: Preschool children with recurrent wheezing were recruited and followed up for 3 years, after which they were classified as cases of transient wheezing or early-onset asthma...
February 22, 2018: Pediatric Allergy and Immunology
Yu-Jin Zhu, Dan Mao, Wei Gao, Hong Hu
Long noncoding RNA (lncRNA) plays roles in many diseases including asthma. Several lncRNAs function in the early differentiation of T-helper cells. lncRNA controls gene transcription, protein expression, and epigenetic regulation. Of the 4 asthma phenotypes, eosinophilic asthma (EA) is the most common. However, the lncRNAs associated with eosinophilic asthma have yet to be identified.We designed a study to identify the circulating lncRNA signature in EA samples. We tested whether significant differences in lncRNA expression were observed between blood samples from patients with EA and healthy individuals (control)...
February 2018: Medicine (Baltimore)
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