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https://www.readbyqxmd.com/read/28915873/a-prospective-cohort-study-on-ambient-air-pollution-and-respiratory-morbidities-including-childhood-asthma-in-adolescents-from-the-western-cape-province-study-protocol
#1
Toyib Olaniyan, Mohamed Jeebhay, Martin Röösli, Rajen Naidoo, Roslynn Baatjies, Nino Künzil, Ming Tsai, Mark Davey, Kees de Hoogh, Dilys Berman, Bhawoodien Parker, Joy Leaner, Mohamed Aqiel Dalvie
BACKGROUND: There is evidence from existing literature that ambient air pollutant exposure in early childhood likely plays an important role in asthma exacerbation and other respiratory symptoms, with greater effect among asthmatic children. However, there is inconclusive evidence on the role of ambient air pollutant exposures in relation to increasing asthma prevalence as well as asthma induction in children. At the population level, little is known about the potential synergistic effects between pollen allergens and air pollutants since this type of association poses challenges in uncontrolled real life settings...
September 16, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28912381/invariant-natural-killer-t-cells-promote-immunogenic-maturation-of-lung-dendritic-cells-in-mouse-models-of-asthma
#2
Qing He, Linlin Liu, Qiaoyu Yang, Ailing Wang, Shuo Chen, Ruiyun Li, Yi Huang, Guqin Zhang, Xuhong Ding, Hongying Yu, Suping Hu, Hanxiang Nie
Our previous study showed that invariant natural killer T (iNKT) cells might act as an adjuvant to promote Th2 inflammatory responses in an OVA-induced mouse model of allergic asthma, but the mechanism remains unknown. To clarify the underlying mechanism through which iNKT cells promote Th2 inflammatory responses, we investigated the modulatory influence of iNKT cells on phenotypic and functional maturation of lung dendritic cells (LDCs) using iNKT cell-knockout mice, specific iNKT cell activation, co-culture experiments, and adoptive transfer of iNKT cells in mouse models of asthma...
September 14, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28892408/variation-in-asthma-care-at-hospital-discharge-by-race-ethnicity-groups
#3
Stacy A Trent, Kohei Hasegawa, Sima K Ramratnam, Jane C Bittner, Carlos A Camargo
INTRODUCTION: While asthma disproportionately affects minorities, little is known about racial/ethnic differences in asthma care at hospital discharge. METHODS: Design: Secondary data analysis of multicenter retrospective study using standardized medical record review. POPULATION: Random sample of patients age 2-54 years, who were hospitalized for asthma at 25 hospitals from 2012-2013. Outcomes and Analysis: We categorized patients into three race/ethnicity groups: non-Hispanic white (NHW), non-Hispanic black (NHB), and Hispanic...
September 11, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28888514/indicators-of-non-adherence-to-asthma-treatment-in-pediatric-primary-care
#4
Marcela D Monti, Rose M Nealis
PURPOSE: Chronic disease management represents an ongoing challenge, as many childhood illnesses require complex medical management by primary care providers. Asthma is one such illness, and today there is evidence to support primary care-based management strategies that will benefit patients with asthma throughout a lifetime. This study seeks to find significant indicators of asthma non-adherence in pediatric primary care, with potential for utilization in the medical home model. DESIGN AND METHODS: Potential indicators included in a chart review process of one large Southeastern U...
September 2017: Journal of Pediatric Nursing
https://www.readbyqxmd.com/read/28886711/structure-and-functional-impact-of-seed-region-variant-in-mir-499-gene-family-in-bronchial-asthma
#5
Eman A Toraih, Mohammad H Hussein, Essam Al Ageeli, Eman Riad, Nouran B AbdAllah, Ghada M Helal, Manal S Fawzy
BACKGROUND: Small non-coding RNAs (microRNAs) have been evolved to master numerous cellular processes. Genetic variants within microRNA seed region might influence microRNA biogenesis and function. The study aimed at determining the role of microRNA-499 (MIR-499) gene family polymorphism as a marker for susceptibility and progression of bronchial asthma and to analyze the structural and functional impact of rs3746444 within the seed region. METHODS: Genotyping for 192 participants (96 patients and 96 controls) in the discovery phase and 319 subjects (115 patients and 204 controls) in the replication phase was performed via Real Time-Polymerase Chain Reaction technology...
September 8, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28871585/exhaled-nitric-oxide-atopy-and-spirometry-in-asthma-and-rhinitis-patients-in-india
#6
Raj Kumar, Nitesh Gupta
INTRODUCTION: Asthma is a chronic airway inflammatory disorder. Nitric oxide (NO) is non-invasively measured in exhaled breath (FeNO). The aim of the study was to investigate the anthropometric and physiologic factors that influence FeNO measurements. Also, to evaluate FeNO correlation with spirometry and inflammatory markers in asthma and rhinitis. MATERIAL AND METHODS: The study was a prospective analysis of asthma (BA) and rhinitis (AR) in patients enrolled from outpatient clinics between 2011 and 2015...
2017: Advances in Respiratory Medicine
https://www.readbyqxmd.com/read/28866644/functional-phenotypes-determined-by-fluctuation-based-clustering-of-lung-function-measurements-in-healthy-and-asthmatic-cohort-participants
#7
Edgar Delgado-Eckert, Oliver Fuchs, Nitin Kumar, Juha Pekkanen, Jean-Charles Dalphin, Josef Riedler, Roger Lauener, Michael Kabesch, Maciej Kupczyk, Sven-Eric Dahlen, Erika von Mutius, Urs Frey
RATIONALE: Asthma is characterised by inflammation and reversible airway obstruction. However, these features are not always closely related. Fluctuations of daily lung function contain information on asthma phenotypes, exacerbation risk and response to long-acting β-agonists. OBJECTIVES: In search of subgroups of asthmatic participants with specific lung functional features, we developed and validated a novel clustering approach to asthma phenotyping, which exploits the information contained within the fluctuating behaviour of twice-daily lung function measurements...
September 2, 2017: Thorax
https://www.readbyqxmd.com/read/28866107/baseline-features-of-the-severe-asthma-research-program-sarp-iii-cohort-differences-with-age
#8
W Gerald Teague, Brenda R Phillips, John V Fahy, Sally E Wenzel, Anne M Fitzpatrick, Wendy C Moore, Annette T Hastie, Eugene R Bleecker, Deborah A Meyers, Stephen P Peters, Mario Castro, Andrea M Coverstone, Leonard B Bacharier, Ngoc P Ly, Michael C Peters, Loren C Denlinger, Sima Ramratnam, Ronald L Sorkness, Benjamin M Gaston, Serpil C Erzurum, Suzy A A Comhair, Ross E Myers, Joe Zein, Mark D DeBoer, Anne-Marie Irani, Elliot Israel, Bruce Levy, Juan Carlos Cardet, Wanda Phipatanakul, Jonathan M Gaffin, Fernando Holguin, Merritt L Fajt, Shean J Aujla, David T Mauger, Nizar N Jarjour
BACKGROUND: The effect of age on asthma severity is poorly understood. OBJECTIVES: The objective of this study was to compare the baseline features of severe and nonsevere asthma in the Severe Asthma Research Program (SARP) III cohort, and examine in cross section the effects of age on those features. METHODS: SARP III is a National Institutes of Health/National Heart Lung Blood Institute multisite 3-year cohort study conducted to investigate mechanisms of severe asthma...
August 30, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28863927/the-role-of-non-invasive-modalities-for-assessing-inflammation-in-patients-with-non-cystic-fibrosis-bronchiectasis
#9
Stamatoula Tsikrika, Katerina Dimakou, Andriana I Papaioannou, Georgios Hillas, Loukas Thanos, Kostantinos Kostikas, Stelios Loukides, Spyros Papiris, Nickolaos Koulouris, Petros Bakakos
INTRODUCTION: Bronchiectasis is a heterogeneous entity, taking into account clinical characteristics, inflammatory response, effectiveness of treatment and frequency of exacerbations. In stable state non-cystic fibrosis (non-CF) bronchiectasis, little is known about non-invasive techniques used for evaluating airway inflammation in obstructive airway diseases. OBJECTIVES: We sought to evaluate the associations between induced sputum and clinical/radiologic characteristics, and the differences between biomarkers expressing Th1 and Th2 response in patients with non-CF bronchiectasis and to compare our findings with a previously studied population of patients with asthma and COPD...
August 29, 2017: Cytokine
https://www.readbyqxmd.com/read/28862877/mepolizumab-attenuates-airway-eosinophil-numbers-but-not-their-functional-phenotype-in-asthma
#10
Elizabeth A Kelly, Stephane Esnault, Lin Ying Liu, Michael D Evans, Mats W Johansson, Sameer Mathur, Deane F Mosher, Loren C Denlinger, Nizar N Jarjour
RATIONALE: Mepolizumab, an interleukin-5 blocking antibody, reduces exacerbations in severe eosinophilic asthma patients. Mepolizumab arrests eosinophil maturation; however, the functional phenotype of eosinophils that persist in the blood and airway after administration of interleukin-5 neutralizing antibodies has not been reported. OBJECTIVE: To determine the effect of anti-IL-5 antibody on the numbers and phenotypes of allergen-induced circulating and airway eosinophils...
September 1, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28862008/-olfactory-function-in-patients-undergoing-fess-for-chronic-rhinosinusitis
#11
Zdeněk Knížek, Jan Vodička, Pavlína Brothánková, Hana Shejbalová
Patients with chronic rhinosinusitis (CRS) often suffer from loss of olfactory function. Rhinosinusitis can be treated either by medical therapy or surgically (FESS). Postoperative outcome in terms of improving sense of smell has been controversial so far. The aim of our study was to determine the patients who would have better postoperative outcomes in terms of improving olfactory function. We collected data of patients undergoing FESS for chronic rhinosinusitis (either with or without nasal polyps) at our department during the years 2012-2015...
2017: Casopís Lékar̆ů C̆eských
https://www.readbyqxmd.com/read/28859263/response-to-omalizumab-using-patient-enrichment-criteria-from-trials-of-novel-biologics-in-asthma
#12
Thomas B Casale, Bradley E Chipps, Karin Rosén, Benjamin Trzaskoma, Tmirah Haselkorn, Theodore A Omachi, Steven Greenberg, Nicola A Hanania
BACKGROUND: Recent efficacy studies of asthma biologics have included highly enriched patient populations. Using a similar approach, we examined factors that predict response to omalizumab to facilitate selection of patients most likely to derive the greatest clinical benefit from therapy. METHODS: Data from two phase III clinical trials of omalizumab in patients with allergic asthma were examined. Differences in rates of asthma exacerbations between omalizumab and placebo groups during the 16-week inhaled corticosteroid (ICS) dose-stable phase were evaluated with respect to baseline blood eosinophil counts (eosinophils <300/μL [low] vs ≥300/μL [high]) and baseline markers of asthma severity (emergency asthma treatment in prior year, asthma hospitalization in prior year, forced expiratory volume in 1 second [FEV1 ; FEV1 <65% vs ≥65% predicted], inhaled beclomethasone dipropionate dose [<600 vs ≥600 μg/day], long-acting beta-agonist [LABA] use [yes/no])...
August 31, 2017: Allergy
https://www.readbyqxmd.com/read/28822449/-cytokine-profiles-of-cd4-t-memory-cells-in-asthma-and-their-relationship-with-asthma-severity
#13
C L Du, K Xu, Z H Min, D D Li, H L Yuan, C Liu, Z H Chen
Objective: To study the phenotype of memory CD4(+) T cells in peripheral blood of asthmatics and its relationship with asthma severity. Methods: From Dec 2014 to Aug 2015, thirty-three asthmatics, twenty-six chronic obstructive pulmonary disease (COPD) patients and twenty-two healthy volunteers were enrolled in Respiratory Clinics of Zhongshan Hospital, Fudan University. Peripheral blood mononuclear cells (PBMCs) were isolated from peripheral blood. Cell surface markers (CD45RO, CRTH2, CD62L, and CCR7) and intracellular protein[interleukin (IL)-5, IL-17, interferon (IFN)-γ]staining was performed using flow-cytometric techniques...
August 8, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28815006/biomarkers-in-inflammometry-pediatric-asthma-utility-in-daily-clinical-practice
#14
REVIEW
Silvia Sánchez-García, Alicia Habernau Mena, Santiago Quirce
Asthma is a common disease in both high and lower income countries that starts early and persists often for life. A correct and accurate diagnosis, treatment and follow-up during childhood are essential for a better understanding of adult asthma and avoiding over- or under-treatment. Th2 inflammation in children with asthma symptoms is usually assessed by measuring with serum total IgE, blood eosinophilia and FeNO levels that may help to predict asthma, particularly in those infants and young children in whom lung function tests are difficult to perform...
2017: European Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28810589/phenotypic-switch-in-lung-interstitial-macrophage-polarization-in-an-ovalbumin-induced-mouse-model-of-asthma
#15
Hanxiang Nie, Ailing Wang, Qing He, Qiaoyu Yang, Linlin Liu, Guqin Zhang, Yi Huang, Xuhong Ding, Hongying Yu, Suping Hu
Macrophage phenotype and function varies according to their polarized state, which in turn is dependent on microenvironmental stimuli. Under normal physiological conditions, lung interstitial macrophages that express interleukin (IL)-10 are considered to serve regulatory roles in the prevention of allergic reactions in the airways. However, the phenotypic profile of lung interstitial macrophages during the pathophysiology of asthma remains unknown. In the current study, the phenotypic characteristics of lung interstitial macrophages were investigated in an ovalbumin (OVA)-induced mouse model of asthma...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810548/effect-of-follicular-helper-t-cells-on-the-pathogenesis-of-asthma
#16
Xiaojuan Ma, Zhan Sun, Pei Zhai, Wenyan Yu, Ting Wang, Fengsen Li, Jianbing Ding
Follicular helper T (TFH) cells are considered to be a separate T helper cell subset, specifically to help memory B cell participate in humoral immunity. It has been reported that there is an association between the imbalance of TFH function and certain autoimmune diseases. However, to the best of our knowledge, the effect of TFH cells on the process of bronchial asthma has not been investigated. The aim of the present study was to investigate the associated markers of TFH cells in bronchial asthma-induced mice...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28804539/mir-371-mir-138-mir-544-mir-145-and-mir-214-could-modulate-th1-th2-balance-in-asthma-through-the-combinatorial-regulation-of-runx3
#17
Yu-Ying Qiu, Ying-Wei Zhang, Xiu-Fen Qian, Tao Bian
Asthma is tightly related to the imbalance of Th1/Th2 cells, and Runx3 plays a pivotal role in the differentiation of T helper cells. The present study aimed to investigate dysregulated microRNAs that may target Runx3 in CD4(+) T cells from asthmatic patients and reveal Runx3 function in Th1/Th2 balance regulation. We detected the levels of Th1- and Th2-related cytokines by ELISA and analyzed the differentiation marker gene of T helper cells by qRT-PCR. Results indicated that an imbalance of Th1/Th2 cells was present in our asthmatic subject...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28797075/arginine-metabolic-endotypes-related-to-asthma-severity
#18
Weiling Xu, Suzy A A Comhair, Allison J Janocha, Abigail Lara, Lori A Mavrakis, Carole D Bennett, Satish C Kalhan, Serpil C Erzurum
AIMS: Arginine metabolism via inducible nitric oxide synthase (iNOS) and arginase 2 (ARG2) is higher in asthmatics than in healthy individuals. We hypothesized that a sub-phenotype of asthma might be defined by the magnitude of arginine metabolism categorized on the basis of high and low fraction of exhaled nitric oxide (FENO). METHODS: To test this hypothesis, asthmatics (n = 52) were compared to healthy controls (n = 51) for levels of FENO, serum arginase activity, and airway epithelial expression of iNOS and ARG2 proteins, in relation to clinical parameters of asthma inflammation and airway reactivity...
2017: PloS One
https://www.readbyqxmd.com/read/28795218/atopy-and-prostate-cancer-is-there-a-link-between-circulating-levels-of-ige-and-psa-in-humans
#19
Mieke Van Hemelrijck, Sophia N Karagiannis, Sabine Rohrmann
BACKGROUND: Atopy has been investigated as a potential risk factor for prostate cancer. IgE antibodies may be major players in protective responses against tumours, through engendering antigen presentation and enhancing adaptive immune responses targeted towards a specific allergen, but potentially also against tumour-associated antigens such as prostate-specific antigen (PSA). We therefore cross-sectionally investigated associations between circulating levels of PSA and IgE in the National Health and Nutrition Examination Survey 2005-2006...
August 9, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28791839/a-comparative-study-of-strem-1-il-6-and-il-13-concentration-in-bronchoalveolar-lavage-fluid-in-asthma-and-copd-a-preliminary-study
#20
COMPARATIVE STUDY
Małgorzata Proboszcz, Magdalena Paplińska-Goryca, Patrycja Nejman-Gryz, Katarzyna Górska, Rafał Krenke
BACKGROUND: Soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) is a cell-surface receptor presented on neutrophils, macrophages and monocytes. Elevated sTREM-1 levels are a marker of acute microbial infections, and have also been reported in chronic lung diseases. IL-6 and IL-13 are effective markers in distinguishing these diseases. IL-6 has been shown to play an important role in chronic obstructive pulmonary disease (COPD), while IL-13 is described as one of the key mediators of allergic asthma...
March 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
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