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https://www.readbyqxmd.com/read/28336811/the-circadian-protein-bmal1-in-myeloid-cells-is-a-negative-regulator-of-allergic-asthma
#1
Zbigniew Zaslona, Sarah Case, James O Early, Stephen J Lalor, Rachel M McLoughlin, Anne M Curtis, Luke A O'Neill
Our body clock drives rhythms in the expression of genes that have a 24-hour periodicity. BMAL1 is a transcription factor, which is a crucial component in the molecular clock. A number of physiological processes, including immune function are modulated by the circadian clock. Asthma is of particular relevance to the area of circadian control of immunity, since it is a disease with very strong clinical evidence demonstrating regulation by circadian variation. Airway hypersensitivity and asthma attacks are more common at night in humans...
March 23, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28332366/soluble-cd93-in-serum-as-a-marker-of-allergic-inflammation
#2
Hye Jung Park, Heejae Han, Sang Chul Lee, Young Woong Son, Da Woon Sim, Kyung Hee Park, Yoon Hee Park, Kyoung Yong Jeong, Jung Won Park, Jae Hyun Lee
PURPOSE: CD93 is receiving renewed attention as a biomarker of inflammation. We aimed to evaluate the potential for serum sCD93 to serve as a novel biomarker for allergic inflammation. MATERIALS AND METHODS: We enrolled 348 subjects with an allergic disease [allergic rhinitis (AR), chronic spontaneous urticaria (CSU), or bronchial asthma (BA)], including 14 steroid-naïve BA patients who were serially followed-up. RESULTS: The serum sCD93 levels (ng/mL) in patients with exacerbated AR (mean±standard deviation, 153...
May 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28330430/effect-of-waterpipe-tobacco-smoking-on-airway-inflammation-in-murine-model-of-asthma
#3
Nour A Al-Sawalha, Ala'a M Migdadi, Karem H Alzoubi, Omar F Khabour, Nidal A Qinna
OBJECTIVE: There has been an increase in the popularity of waterpipe tobacco smoking (WTS) worldwide, especially in the younger population, including asthma patients. In this study, we investigated the effects of waterpipe smoking on airway inflammation, cytokine levels and oxidative stress markers in an antigen-driven murine model of asthma. MATERIALS AND METHODS: Balb/c mice were divided into four groups; (1) control (received fresh air, ovalbumin sensitization and saline challenge), (2) WTS (received WTS, ovalbumin sensitization and saline challenge), (3) Ova S/C (received fresh air, ovalbumin sensitization and ovalbumin challenge) and (4) simultaneous WTS and Ova S/C (received WTS, ovalbumin sensitization and ovalbumin challenge)...
February 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/28326636/il4r%C3%AE-and-adam33-as-genetic-markers-in-asthma-exacerbations-and-type-2-inflammatory-endotype
#4
Hironobu Sunadome, Hisako Matsumoto, Guergana Petrova, Yoshihiro Kanemitsu, Yuji Tohda, Takahiko Horiguchi, Hideo Kita, Kazunobu Kuwabara, Keisuke Tomii, Kojiro Otsuka, Masaki Fujimura, Noriyuki Ohkura, Katsuyuki Tomita, Akihito Yokoyama, Hiroshi Ohnishi, Yasutaka Nakano, Tetsuya Oguma, Soichiro Hozawa, Tadao Nagasaki, Isao Ito, Tsuyoshi Oguma, Hideki Inoue, Tomoko Tajiri, Toshiyuki Iwata, Yumi Izuhara, Junya Ono, Shoichiro Ohta, Tomomitsu Hirota, Mayumi Tamari, Tetsuji Yokoyama, Akio Niimi, Kenji Izuhara, Michiaki Mishima
BACKGROUND: Genetic markers of susceptibility to asthma exacerbations in adults remain unclear. OBJECTIVE: To identify genetic markers of asthma exacerbations, particularly in patients with type-2 inflammatory endotype. METHODS: In this observational study of patients enrolled in the Kinki Hokuriku Airway disease Conference multicenter study, frequency of exacerbations requiring systemic corticosteroids during 2 years after enrolment and associated risk factors were determined...
March 22, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28325311/improved-fluorescent-labeling-of-chitin-oligomers-chitinolytic-properties-of-acidic-mammalian-chitinase-under-somatic-tissue-ph-conditions
#5
Satoshi Wakita, Masahiro Kimura, Naoki Kato, Akinori Kashimura, Shunsuke Kobayashi, Naoto Kanayama, Misa Ohno, Shotaro Honda, Masayoshi Sakaguchi, Yasusato Sugahara, Peter O Bauer, Fumitaka Oyama
Acidic mammalian chitinase (AMCase) has been implicated in various pathophysiological conditions including asthma, allergic inflammation and food processing. AMCase is most active at pH 2.0, and its activity gradually decreases to up to pH 8. Here we analyzed chitin degradation by AMCase in weak acidic to neutral conditions by fluorophore-assisted carbohydrate electrophoresis established originally for oligosaccharides analysis. We found that specific fragments with slower-than-expected mobility as defined by chitin oligosaccharide markers were generated at pH 5...
May 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28306357/asthma-causes-inflammation-of-human-pulmonary-arteries-and-decreases-vasodilatation-induced-by-prostaglandin-i2-analogs
#6
Nabil Foudi, Aouatef Badi, Mounira Amrane, Wassim Hodroj
OBJECTIVE: Asthma is a chronic inflammatory disease associated with increased cardiovascular events. This study assesses the presence of inflammation and the vascular reactivity of pulmonary arteries in patients with acute asthma. METHODS: Rings of human pulmonary arteries obtained from non-asthmatic and asthmatic patients were set up in organ bath for vascular tone monitoring. Reactivity was induced by vasoconstrictor and vasodilator agents. Protein expression of inflammatory markers was detected by western blot...
February 21, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28302126/systematic-meta-review-of-supported-self-management-for-asthma-a-healthcare-perspective
#7
Hilary Pinnock, Hannah L Parke, Maria Panagioti, Luke Daines, Gemma Pearce, Eleni Epiphaniou, Peter Bower, Aziz Sheikh, Chris J Griffiths, Stephanie J C Taylor
BACKGROUND: Supported self-management has been recommended by asthma guidelines for three decades; improving current suboptimal implementation will require commitment from professionals, patients and healthcare organisations. The Practical Systematic Review of Self-Management Support (PRISMS) meta-review and Reducing Care Utilisation through Self-management Interventions (RECURSIVE) health economic review were commissioned to provide a systematic overview of supported self-management to inform implementation...
March 17, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28301050/addition-of-anti-leukotriene-agents-to-inhaled-corticosteroids-for-adults-and-adolescents-with-persistent-asthma
#8
REVIEW
Bhupendrasinh F Chauhan, Maya M Jeyaraman, Amrinder Singh Mann, Justin Lys, Ahmed M Abou-Setta, Ryan Zarychanski, Francine M Ducharme
BACKGROUND: Asthma management guidelines recommend low-dose inhaled corticosteroids (ICS) as first-line therapy for adults and adolescents with persistent asthma. The addition of anti-leukotriene agents to ICS offers a therapeutic option in cases of suboptimal control with daily ICS. OBJECTIVES: To assess the efficacy and safety of anti-leukotriene agents added to ICS compared with the same dose, an increased dose or a tapering dose of ICS (in both arms) for adults and adolescents 12 years of age and older with persistent asthma...
March 16, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28300572/the-potential-role-of-aspiration-in-the-asthmatic-airway
#9
Eoin B Hunt, Chris Ward, Stephen Power, Ashley Sullivan, Jeffrey Pearson, Susan Lapthorne, Paul M O'Byrne, Joseph Eustace, Barry J Plant, Michael M Maher, John MacSharry, Desmond M Murphy
BACKGROUND: Many asthmatics remain sub-optimally controlled despite current treatments. Reasons include comorbidities that could aggravate asthma, including gastro-esophageal reflux (GER). We aimed to investigate whether aspiration occurs in asthmatic patients and if so does it correlate with asthma control. METHODS: Patients had ACQ-7, FeNO, and spirometry performed to characterize their level of asthma control. Barium swallow with provocation was performed to assess for predisposition to aspiration...
March 11, 2017: Chest
https://www.readbyqxmd.com/read/28293932/effect-of-tio%C3%A2-nanoparticles-on-inflammasome-mediated-airway-inflammation-and-responsiveness
#10
Byeong Gon Kim, Pureun Haneul Lee, Sun Hye Lee, Moo Kyun Park, An Soo Jang
PURPOSE: Nanoparticles (NPs) may cause cell and tissue damage, leading to local and systemic inflammatory responses and adverse effects on health due to the inhalation of particulate matter. The inflammasome is a major regulator of inflammation through its activation of pro-caspase-1, which cleaves pro-interleukin-1β (pro-IL-1β) into its mature form and may induce acute and chronic immune responses to NPs. However, little is known about the response of the inflammasome to NP exposure via the airways in asthma...
May 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28286155/diagnostic-accuracy-of-inflammatory-markers-for-diagnosing-occupational-asthma
#11
Geneviève Racine, Roberto Castano, André Cartier, Catherine Lemiere
BACKGROUND: The assessment of airway responsiveness and inflammation is key to the investigation of occupational asthma (OA). OBJECTIVE: We sought to assess and compare the diagnostic accuracies of the blood and sputum eosinophil counts and the methacholine challenge for the diagnosis of OA. METHODS: We conducted a retrospective study assessing 618 patients who underwent specific inhalation challenges (SICs) for symptoms suggestive of OA between 2000 and 2015...
March 9, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28284979/effect-of-polymorphisms-on-tgfb1-on-allergic-asthma-and-helminth-infection-in-an-african-admixed-population
#12
Ryan Dos Santos Costa, Camila Alexandrina Figueiredo, Maurıcio Lima Barreto, Neuza Maria Alcantara-Neves, Laura Cunha Rodrigues, Alvaro A Cruz, Candelaria Vergara, Nicholas Rafaels, Cassandra Foster, Joseph Potee, Monica Campbell, Rasika A Mathias, Kathleen C Barnes
BACKGROUND: Allergic asthma is a complex disorder that results from a combination of genetic and environmental factors. Studies suggest that helminth infections can activate a regulatory network characterized by the production of regulatory cytokines, such as interleukin 10 and transforming growth factor β1 (TGF-β1) and subsequently protect against immune-mediated diseases, such as asthma. On the other hand, TGF-β1 is increased in the lungs of individuals with asthma and may modulate airway inflammation...
March 8, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28283567/eosinophils-promote-antiviral-immunity-in-mice-infected-with-influenza-a-virus
#13
Amali E Samarasinghe, Rossana C N Melo, Susu Duan, Kim S LeMessurier, Swantje Liedmann, Sherri L Surman, James J Lee, Julia L Hurwitz, Paul G Thomas, Jonathan A McCullers
Eosinophils are multifunctional cells of the innate immune system linked to allergic inflammation. Asthmatics were more likely to be hospitalized but less likely to suffer severe morbidity and mortality during the 2009 influenza pandemic. These epidemiologic findings were recapitulated in a mouse model of fungal asthma wherein infection during heightened allergic inflammation was protective against influenza A virus (IAV) infection and disease. Our goal was to delineate a mechanism(s) by which allergic asthma may alleviate influenza disease outcome, focused on the hypothesis that pulmonary eosinophilia linked with allergic respiratory disease is able to promote antiviral host defenses against the influenza virus...
March 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28282228/evaluation-of-exhaled-breath-temperature-ebt-as-a-marker-and-predictor-of-asthma-exacerbation-in-children-and-adolescents
#14
Irena Wojsyk-Banaszak, Marcin Mikoś, Aleksandra Szczepankiewicz, Alicja Wielebska, Paulina Sobkowiak, Aleksandra Kamińska, Anna Bręborowicz
INTRODUCTION: Noninvasive and easy-to-use tools to monitor airway inflammation in asthma are needed to maintain disease control, particularly in pediatric population. The aim of the study was to evaluate exhaled breath temperature (EBT) in pediatric respiratory clinic setting. METHODS: We evaluated 37 children and adolescents with asthma (5-17 years; median: 11 years). The patients were followed up in stable condition and during exacerbations (paired observations in n = 19 subjects)...
March 10, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28266165/il33-and-il1rl1-variants-are-associated-with-asthma-and-atopy-in-a-brazilian-population
#15
G A Queiroz, R S Costa, N M Alcantara-Neves, G Nunes de Oliveira Costa, M L Barreto, V L Carneiro, C A Figueiredo
Atopic asthma is a chronic inflammatory disease in airways resulting from genetic and environmental factors, characterized by production of the Th2 cytokines interleukin-4 (IL-4), interleukin-5 (IL-5) and interleukin-13 (IL-13). Interleukin-33 (IL-33) appears to be a potent inducer of Th2 immune response. This occurs when IL-33 binds and activates its receptor, the membrane ST2 (ST2L) in mast cells, dendritic cells, basophils, eosinophils, innate lymphoids and Th2 cells, leading to the release of these cytokines and intensifying allergic inflammation...
April 2017: International Journal of Immunogenetics
https://www.readbyqxmd.com/read/28265480/proximity-to-a-major-road-and-plasma-cytokines-in-school-aged-children
#16
Franziska Rosser, Erick Forno, John Brehm, Yueh-Ying Han, Nadia Boutaoui, Angel Colón-Semidey, María Alvarez, Edna Acosta-Pérez, Kristen S Kurland, John F Alcorn, Glorisa Canino, Juan C Celedón
Traffic-related air pollution (TRAP) may affect immune responses, including those in the TH2 and TH17 pathways. To examine whether TRAP is associated with plasma level of TH17-, TH1-, and TH2-related cytokines in children with and without asthma, a cross-sectional study of 577 children (ages 6-14 years) with (n = 294) and without (n = 283) asthma in San Juan (Puerto Rico) was performed. Residential distance to a major road was estimated using geocoded home addresses for study participants. A panel of 14 cytokines, enriched for the TH17 pathway, was measured in plasma...
September 1, 2016: Pediatric Allergy, Immunology, and Pulmonology
https://www.readbyqxmd.com/read/28264541/serum-vascular-endothelial-growth-factor-as-a-marker-of-asthma-exacerbation
#17
Joo-Hee Kim
No abstract text is available yet for this article.
March 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28258374/polymorphism-4g-5g-of-the-plasminogen-activator-inhibitor-1-gene-as-a-risk-factor-for-the-development-of-allergic-rhinitis-symptoms-in-patients-with-asthma
#18
Marina Lampalo, Irena Jukic, Jasna Bingulac-Popovic, Ivona Marunica, Roberta Petlevski, Gordana Pavlisa, Sanja Popovic-Grle
Plasminogen activator inhibitor-1 (PAI-1) is a glycoprotein which has a role in tissue remodelling after inflammatory processes. The objective is to investigate the frequency of PAI-1 gene polymorphism (4G/5G) in patients with a lung ventilation dysfunction in asthma and allergic rhinitis. Genomic DNA was isolated and genotypes of polymorphism of PAI-1 4G/5G and ABO were determined using the methods of RT-PCR and PCR-SSP. Study group includes 145 adult patients diagnosed with chronic asthma, with all clinically relevant parameters and the laboratory markers of pO2, IgE and eosinophils in sputum and nasal swab...
March 3, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28256388/utility-of-serum-periostin-in-combination-with-exhaled-nitric-oxide-in-the-management-of-asthma
#19
REVIEW
Tadao Nagasaki, Hisako Matsumoto, Kenji Izuhara
Type-2/eosinophilic inflammation plays a pivotal role in asthma. The identification of severe type-2/eosinophilic asthma is important for improving the management of patients with asthma. Therefore, efforts to develop non-invasive biomarkers for type-2/eosinophilic airway inflammation have been made during this decade. Currently, fraction of exhaled nitric oxide (FeNO) and serum periostin levels are considered markers of type-2/eosinophilic inflammation in asthma. However, a single-marker approach has limited the ability to diagnose severe type-2/eosinophilic asthma accurately and predict disease outcomes precisely...
February 27, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28253869/reduced-prf1-enhancer-methylation-in-children-with-a-history-of-severe-rsv-bronchiolitis-in-infancy-an-association-study
#20
Magdeldin Elgizouli, Chad Logan, Ruth Grychtol, Dietrich Rothenbacher, Alexandra Nieters, Andrea Heinzmann
BACKGROUND: Acute lower respiratory tract infection is the commonest disease affecting children under five worldwide. Respiratory syncytial virus (RSV) is among the most common causative pathogens. Epidemiological data suggest an association between severe viral respiratory infections in infancy and increased incidence of childhood wheeze and asthma. DNA methylation is involved in immune cell differentiation and identity. It provides an avenue for environmental influences on the genome and therefore has potential as a marker for sustained effects of infectious insults...
March 3, 2017: BMC Pediatrics
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