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https://www.readbyqxmd.com/read/27907922/distinct-contributory-factors-determine-basophil-allergen-sensitivity-in-grass-pollen-rhinitis-and-in-anaphylactic-wasp-venom-allergy
#1
Peter Korošec, Mira Šilar, Peter Kopač, Renato Eržen, Mihaela Zidarn, Mitja Košnik
BACKGROUND: We sought to determine whether basophil-allergen sensitivity could be transferred to donor basophils by passive IgE sensitisation in allergic rhinitis and anaphylactic Hymenoptera venom hypersensitivity. METHODS: We studied 15 wasp venom-, 19 grass pollen- and 2 house dust mite-allergic patients, 2 healthy donors, and 8 wasp venom-allergic donors. In all subjects, we first evaluated the initial basophil response to wasp venom, grass pollen, or house dust mite allergen...
December 2, 2016: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/27903069/low-concentration-pm10-had-no-effect-on-nasal-symptoms-and-flow-in-allergic-rhinitis-patients
#2
Young Hyo Kim, Kwang Pil Ko, Il Gyu Kang, Joo Hyun Jung, Dae Kyu Oh, Tae Young Jang, Seon Tae Kim
Objectives: Since Korea is geographically close to China (the origin site for Asian sand dust [ASD]) the health influence of ASD event will be still greater in Korea. We aimed to evaluate the effect of PM10 (particulate matter with aerodynamic diameter <10 μm, below 150 μg/m3) on the clinical course of allergic rhinitis (AR). Methods: We enrolled 47 healthy volunteers (group A) and 108 AR patients sensitized to house dust mites (group B). For 120 consecutive days (from February 1st to May 30th, 2012), all subjects reported their daily nasal symptoms and performed 2 peak flowmeter readings to measure peak nasal inspiratory flow (PNIF)...
December 2, 2016: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/27900996/suppression-of-immunotherapy-on-group-2-innate-lymphoid-cells-in-allergic-rhinitis
#3
Da-Chuan Fan, Xiang-Dong Wang, Cheng-Shuo Wang, Yang Wang, Fei-Fei Cao, Luo Zhang
BACKGROUND: Group 2 innate lymphoid cells (ILC2s) are regarded as a novel population of lineage-negative cells that induce innate Type 2 responses by producing the critical Th2-type cytokines interleukin (IL)-5 and IL-13. ILC2s as key players in the development of allergic rhinitis (AR) have been proved, however, the effect of subcutaneous immunotherapy (SCIT) with dermatophagoides pteronyssinus extract (Der p-SCIT) on ILC2s in AR patients is not clear. This study aimed to investigate the response of ILC2s of peripheral blood in house dust mites (HDM)-sensitized Chinese patients with AR who received SCIT with Der P extract...
2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27895167/pgi2-controls-pulmonary-nk-cells-that-prevent-airway-sensitization-to-house-dust-mite-allergen
#4
Bryan Simons, Maria E Ferrini, Sophia Carvalho, David J P Bassett, Zeina Jaffar, Kevan Roberts
In allergic asthma, inhalation of airborne allergens such as the house dust mite (HDM) effectively activates both innate and adaptive immunity in the lung mucosa. To determine the role of the eicosanoid PGI2 and its receptor IP during allergic airway sensitization, HDM responses in mice lacking a functional IP receptor (i.e., PGI2 IP receptor-deficient [IP(-/-)]) were compared with wild type (WT) mice. Surprisingly, IP(-/-) mice had increased numbers of pulmonary CD3(-)NK1.1(+)Ly49b(+) NK cells producing IFN-γ that was inversely associated with the number of type 2 innate lymphoid cells (ILC2s) expressing IL-33Rα and IL-13 compared with WT animals...
November 28, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27891156/usefulness-of-component-resolved-analysis-of-cat-allergy-in-routine-clinical-practice
#5
Katharina Eder, Sven Becker, Marion San Nicoló, Alexander Berghaus, Moritz Gröger
BACKGROUND: Cat allergy is of great importance, and its prevalence is increasing worldwide. Cat allergens and house dust mite allergens represent the major indoor allergens; however, they are ubiquitous. Cat sensitization and allergy are known risk factors for rhinitis, bronchial hyperreactivity and asthma. Thus, the diagnosis of sensitization to cats is important for any allergist. METHODS: 70 patients with positive skin prick tests for cats were retrospectively compared regarding their skin prick test results, as well as their specific immunoglobulin E antibody profiles with regard to their responses to the native cat extract, rFel d 1, nFel d 2 and rFel d 4...
2016: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/27884393/1-25-dihydroxyvitamin-d3-targeting-vegf-pathway-alleviates-house-dust-mite-hdm-induced-airway-epithelial-barrier-dysfunction
#6
Ruhui Zhang, Hangming Dong, Haijin Zhao, Liqin Zhou, Fei Zou, Shaoxi Cai
BACKGROUND: In our previous studies, we have indentified that 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) can alleviate toluene diisocyanate-induced airway epithelial barrier disruption and we also found that vascular endothelial growth factor (VEGF) derived from airway epithelials cells could disrupt epithelial barrier. OBJECTIVE: The study aimed to investigate whether 1,25(OH)2D3 can inhibit house dust mite (HDM) induced airway epithelial barrier dysfunction by regulating the VEGF pathway...
November 16, 2016: Cellular Immunology
https://www.readbyqxmd.com/read/27878831/i%C3%AE%C2%BAbns-induces-muc5ac-expression-in-epithelial-cells-and-causes-airway-hyper-responsiveness-in-murine-asthma-models
#7
M Yokota, T Tamachi, Y Yokoyama, Y Maezawa, H Takatori, A Suto, K Suzuki, K Hirose, K Takeda, H Nakajima
BACKGROUND: In allergic asthma, environmental allergens including house dust mite (HDM) trigger pattern recognition receptors and activate downstream signaling pathways including NF-κB pathways not only in immune cells but also in airway epithelial cells. Recent studies have shown that NF-κB activation is regulated positively or negatively depending on the cellular context by IκBNS (encoded by the gene Nfkbid), one of atypical IκB proteins, in the nucleus. Therefore, we hypothesized that IκBNS expressed in immune cells or epithelial cells is involved in the regulation of asthmatic responses...
November 6, 2016: Allergy
https://www.readbyqxmd.com/read/27870920/picroside-ii-attenuates-airway-inflammation-by-downregulating-the-transcription-factor-gata3-and-th2-related-cytokines-in-a-mouse-model-of-hdm-induced-allergic-asthma
#8
Jin Choi, Bo Kyong Choi, Jin Seok Kim, Jae-Won Lee, Hyun Ah Park, Hyung Won Ryu, Su Ui Lee, Kwang Woo Hwang, Won-Kee Yun, Hyoung-Chin Kim, Kyung-Seop Ahn, Sei-Ryang Oh, Hyun-Jun Lee
Picroside II isolated from Pseudolysimachion rotundum var. subintegrum has been used as traditional medicine to treat inflammatory diseases. In this study, we assessed whether picroside II has inhibitory effects on airway inflammation in a mouse model of house dust mite (HDM)-induced asthma. In the HDM-induced asthmatic model, picroside II significantly reduced inflammatory cell counts in the bronchoalveolar lavage fluid (BALF), the levels of total immunoglobulin (Ig) E and HDM-specific IgE and IgG1 in serum, airway inflammation, and mucus hypersecretion in the lung tissues...
2016: PloS One
https://www.readbyqxmd.com/read/27865862/impaired-mucus-clearance-exacerbates-allergen-induced-type-2-airway-inflammation-in-juvenile-mice
#9
Benedikt Fritzsching, Matthias Hagner, Lu Dai, Sandra Christochowitz, Raman Agrawal, Charlotte van Bodegom, Simone Schmidt, Jolanthe Schatterny, Stephanie Hirtz, Ryan Brown, Michelle Goritzka, Julia Duerr, Zhe Zhou-Suckow, Marcus A Mall
BACKGROUND: Type 2 airway inflammation plays a central role in the pathogenesis of allergen-induced asthma, but the underlying mechanisms remain poorly understood. We recently demonstrated that reduced mucociliary clearance, a characteristic feature of asthma, produces spontaneous type 2 airway inflammation in juvenile Scnn1b-transgenic (Scnn1b-Tg) mice. OBJECTIVE: To determine the role of impaired mucus clearance in the pathogenesis of allergen-induced type 2 airway inflammation and identify cellular sources of the signature cytokine IL-13...
November 16, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27864285/il-23-secreted-by-bronchial-epithelial-cells-contributes-allergic-sensitization-in-asthma-model
#10
Hyun Seung Lee, Da-Eun Park, Ji-Won Lee, Yuna Chang, Hye Young Kim, Woo-Jung Song, Hye-Ryun Kang, Heung-Woo Park, Yoon-Seok Chang, Sang-Heon Cho
BACKGROUND: IL-23 has been postulated to be a critical mediator contributing to various inflammatory diseases. Dermatophagoides pteronyssinus (Der p) is one of the most common inhalant allergens. However, the role of IL-23 in Der p-induced mouse asthma model is not well understood, particularly with regard to the development of allergic sensitization in the airways. OBJECTIVE: To evaluate roles of IL-23 in Der p-sensitization and asthma development. METHODS: BALB/c mice were repeatedly administered with Der p intra-nasally to develop Der p-allergic sensitization and asthma...
November 18, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27864024/efficacy-and-safety-of-the-sq-house-dust-mite-slit-tablet-in-japanese-adults-and-adolescents-with-house-dust-mite-induced-allergic-rhinitis
#11
Kimihiro Okubo, Keisuke Masuyama, Toru Imai, Kazuhiro Okamiya, Brian Sonne Stage, Dorthe Seitzberg, Akiyoshi Konno
BACKGROUND: The SQ HDM SLIT-tablet has been approved in 11 European countries and Japan for patients suffering from house dust mite (HDM) respiratory allergic disease. OBJECTIVE: This trial was conducted to confirm efficacy and safety in Japanese patients with moderate to severe HDM allergic rhinitis (AR). METHODS: The trial was a randomized, double-blind, placebo-controlled trial including 946 Japanese adults and adolescents (12-64 years)...
November 15, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27852745/dectin-1-plays-an-important-role-in-house-dust-mite-induced-allergic-airway-inflammation-through-the-activation-of-cd11b-dendritic-cells
#12
Takashi Ito, Koichi Hirose, Ayako Norimoto, Tomohiro Tamachi, Masaya Yokota, Aiko Saku, Hiroaki Takatori, Shinobu Saijo, Yoichiro Iwakura, Hiroshi Nakajima
It is well known that sensitization against fungi is closely associated with severity of asthma. Dectin-1 (gene symbol Clec7a), a C-type lectin receptor, recognizes the fungal cell wall component β-glucan, as well as some component(s) in house dust mite (HDM) extract. However, the roles of Dectin-1 in HDM-induced allergic airway inflammation remain unclear. In this study, we used Dectin-1-deficient (Clec7a(-/-)) mice to examine whether Dectin-1 is involved in HDM-induced allergic airway inflammation. We found that HDM-induced eosinophil and neutrophil recruitment into the airways was significantly attenuated in Clec7a(-/-) mice compared with that in wild-type mice...
November 16, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27836899/trail-signaling-is-pro-inflammatory-and-pro-viral-in-a-murine-model-of-rhinovirus-1b-infection
#13
Jason L Girkin, Luke Hatchwell, Adam M Collison, Malcolm R Starkey, Philip M Hansbro, Hideo Yagita, Paul S Foster, Joerg Mattes
The aim of this study is to elucidate the role of TRAIL during rhinovirus (RV) infection in vivo. Naïve wild type and TRAIL-deficient (Tnfsf10-/-) BALB/c mice were infected intranasally with RV1B. In separate experiments, Tnfsf10-/- mice were sensitized and challenged via the airway route with house dust mite (HDM) to induce allergic airways disease and then challenged with RVIB or UV-RVIB. Airways hyperreactivity (AHR) was invasively assessed as total airways resistance in response to increasing methacholine challenge and inflammation assessed in bronchoalveolar lavage fluid (BALF) at multiple time points post infection...
November 11, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27826964/comorbidities-and-phenotypes-of-rhinitis-in-korean-children-and-adolescents-a-cross-sectional-multicenter-study
#14
Kyung Suk Lee, Hye Yung Yum, Youn Ho Sheen, Yong Mean Park, Yong Ju Lee, Bong Seok Choi, Hye Mi Jee, Sun Hee Choi, Hyun Hee Kim, Yang Park, Hyo Bin Kim, Yeong Ho Rha
PURPOSE: Rhinitis is a nasal inflammatory disease in children and adolescents. However, little is known about the phenotypes and characteristics of allergic rhinitis (AR) in Korean children and adolescents. The objective of this study was to analyze the symptoms and comorbidities of rhinitis, to compare AR to non-allergic rhinitis (NAR), and to reveal the phenotypes and features of AR in a Korean pediatric population. METHODS: Patients under 18 years of age with rhinitis symptoms were recruited from January 2013 to January 2015 by pediatric allergists...
January 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/27825108/runx2-a-novel-regulator-for-goblet-cell-differentiation-and-asthma-development
#15
Ning Shi, Jing Zhang, Shi-You Chen
Airway goblet-cell differentiation and related mucus overproduction are critical processes in the development of respiratory diseases, including asthma. The underlying mechanisms, however, are not fully understood. We identified Runt-related transcription factor 2 (Runx2) as a novel regulator for goblet-cell differentiation. Runx2 was up-regulated by 6.4-fold during IL-13-induced goblet-cell differentiation of human bronchial epithelial cells. Knockdown of Runx2 attenuated the IL-13-induced differentiation/mucus production by 67%...
October 17, 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/27820933/secretoglobin-superfamily-protein-scgb3a2-alleviates-house-dust-mite-induced-allergic-airway-inflammation-in-mice
#16
Mitsuhiro Yoneda, Lei Xu, Hiroaki Kajiyama, Shuko Kawabe, Jorge Paiz, Jerrold M Ward, Shioko Kimura
BACKGROUND: Secretoglobin (SCGB) 3A2, a novel, lung-enriched, cytokine-like, secreted protein of small molecular weight, was demonstrated to exhibit various biological functions including anti-inflammatory, antifibrotic and growth-factor activities. Anti-inflammatory activity was uncovered using the ovalbumin-induced allergic airway inflammation model. However, further validation of this activity using knockout mice in a different allergic inflammation model is necessary in order to establish the antiallergic inflammatory role for this protein...
2016: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/27820923/the-proinflammatory-potential-of-nitrogen-dioxide-and-its-influence-on-the-house-dust-mite-allergen-der-p-1
#17
Christian Koehler, Michael Paulus, Christian Ginzkey, Stephan Hackenberg, Agmal Scherzad, Pascal Ickrath, Rudolf Hagen, Norbert Kleinsasser
Asthma and allergies are both major global health problems with an increasing prevalence, and environmental data implicate an influence of air pollutants on their development. The present study focuses on the influence of nitrogen dioxide (NO2) and the major allergen of the house dust mite Der p 1 on human nasal epithelial cells of nonallergic patients in vitro. Nasal epithelial mucosa samples of 11 donors were harvested during nasal air passage surgery and cultured as an air-liquid interface. Exposure to 0...
2016: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/27817798/advances-in-rhinitis-and-rhinosinusitis-in-2015
#18
REVIEW
Claus Bachert, Elien Gevaert
The last year has seen great progress in the understanding of upper airway disease and in its management. For allergic rhinitis, authors focused on the prediction of and effect on the natural course of disease. New evidence was published for the disease-modifying effect of allergen immunotherapy in terms of avoidance of new sensitizations and prevention of asthma in either randomized or real-life studies. Specifically, for patients with house dust mite allergies, which are often underestimated and difficult to diagnose, the efficacy of SQ house dust mite sublingual immunotherapy tablets has been demonstrated in patients with allergic rhinitis and asthma...
November 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27812543/duox1-mediates-persistent-epithelial-egfr-activation-mucous-cell-metaplasia-and-airway-remodeling-during-allergic-asthma
#19
Aida Habibovic, Milena Hristova, David E Heppner, Karamatullah Danyal, Jennifer L Ather, Yvonne M W Janssen-Heininger, Charles G Irvin, Matthew E Poynter, Lennart K Lundblad, Anne E Dixon, Miklos Geiszt, Albert van der Vliet
Chronic inflammation with mucous metaplasia and airway remodeling are hallmarks of allergic asthma, and these outcomes have been associated with enhanced expression and activation of EGFR signaling. Here, we demonstrate enhanced expression of EGFR ligands such as amphiregulin as well as constitutive EGFR activation in cultured nasal epithelial cells from asthmatic subjects compared with nonasthmatic controls and in lung tissues of mice during house dust mite-induced (HDM-induced) allergic inflammation. EGFR activation was associated with cysteine oxidation within EGFR and the nonreceptor tyrosine kinase Src, and both amphiregulin production and oxidative EGFR activation were diminished by pharmacologic or genetic inhibition of the epithelial NADPH oxidase dual oxidase 1 (DUOX1)...
November 3, 2016: JCI Insight
https://www.readbyqxmd.com/read/27810926/mafb-lineage-tracing-to-distinguish-macrophages-from-other-immune-lineages-reveals-dual-identity-of-langerhans-cells
#20
Xiaodi Wu, Carlos G Briseño, Vivek Durai, Jörn C Albring, Malay Haldar, Prachi Bagadia, Ki-Wook Kim, Gwendalyn J Randolph, Theresa L Murphy, Kenneth M Murphy
Current systems for conditional gene deletion within mouse macrophage lineages are limited by ectopic activity or low efficiency. In this study, we generated a Mafb-driven Cre strain to determine whether any dendritic cells (DCs) identified by Zbtb46-GFP expression originate from a Mafb-expressing population. Lineage tracing distinguished macrophages from classical DCs, neutrophils, and B cells in all organs examined. At steady state, Langerhans cells (LCs) were lineage traced but also expressed Zbtb46-GFP, a phenotype not observed in any other population...
November 14, 2016: Journal of Experimental Medicine
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