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https://www.readbyqxmd.com/read/28815724/secreted-products-of-fasciola-hepatica-inhibit-the-induction-of-t-cell-responses-that-mediate-allergy
#1
Conor M Finlay, Anna M Stefanska, Michelle M Coleman, Hanne Jahns, Joseph P Cassidy, Rachel M McLoughlin, Kingston H G Mills
There is evidence from epidemiology studies of a negative association between infection with helminth parasites and the development of allergy and asthma. Here we demonstrate that the excretory/secretory products of the helminth Fasciola hepatica (FHES) protected mice against ovalbumin (OVA)-induced allergic asthma when administered at time of allergen sensitisation. FHES reduced the accumulation of mucus, eosinophils and lymphocytes into the airways of allergen-challenged mice. Furthermore, FHES treatment suppressed Th2 responses in the airways...
August 16, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28814067/neuro-immune-interactions-in-allergic-diseases-novel-targets-for-therapeutics
#2
Tiphaine Voisin, Amélie Bouvier, Isaac M Chiu
Recent studies have highlighted an emerging role for neuro-immune interactions in mediating allergic diseases. Allergies are caused by an overactive immune response to a foreign antigen. The peripheral sensory and autonomic nervous system densely innervates mucosal barrier tissues including the skin, respiratory tract and gastrointestinal (GI) tract that are exposed to allergens. It is increasingly clear that neurons actively communicate with and regulate the function of mast cells, dendritic cells, eosinophils, Th2 cells and type 2 innate lymphoid cells in allergic inflammation...
June 1, 2017: International Immunology
https://www.readbyqxmd.com/read/28811323/il-22-induces-reg3%C3%AE-and-inhibits-allergic-inflammation-in-house-dust-mite-induced-asthma-models
#3
Takashi Ito, Koichi Hirose, Aiko Saku, Kenta Kono, Hiroaki Takatori, Tomohiro Tamachi, Yoshiyuki Goto, Jean-Christophe Renauld, Hiroshi Kiyono, Hiroshi Nakajima
Previous studies have shown that IL-22, one of the Th17 cell-related cytokines, plays multiple roles in regulating allergic airway inflammation caused by antigen-specific Th2 cells; however, the underlying mechanism remains unclear. Here, we show that allergic airway inflammation and Th2 and Th17 cytokine production upon intratracheal administration of house dust mite (HDM) extract, a representative allergen, were exacerbated in IL-22-deficient mice. We also found that IL-22 induces Reg3γ production from lung epithelial cells through STAT3 activation and that neutralization of Reg3γ significantly exacerbates HDM-induced eosinophilic airway inflammation and Th2 cytokine induction...
August 15, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28810625/inhaled-corticosteroids-improve-lung-function-airway-hyper-responsiveness-and-airway-inflammation-but-not-symptom-control-in-patients-with-mild-intermittent-asthma-a-meta-analysis
#4
Wei Du, Ling Zhou, Yingmeng Ni, Yuanyuan Yu, Fang Wu, Guochao Shi
It remains controversial whether inhaled corticosteroid (ICS) should be used in patients with intermittent asthma. The present study aimed to assess the effect of ICS compared with placebo or other therapies in patients with intermittent asthma. Medline, Embase and CNKI databases were searched up to June 2016 and a meta-analysis was conducted. The findings demonstrated that in adult patients, when compared with placebo, ICS increased forced expiratory volume in 1 sec FEV1 [standardized mean difference (SMD), 0...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810543/atorvastatin-has-a-protective-effect-in-a-mouse-model-of-bronchial-asthma-through-regulating-tissue-transglutaminase-and-triggering-receptor-expressed-on-myeloid-cells-1-expression
#5
Ming-Wei Liu, Rong Liu, Hai-Ying Wu, Mei Chen, Min-Na Dong, Yun-Qiao Huang, Chun-Hai Zhang, Yin-Zhong Wang, Jing Xia, Yang Shi, Feng-Mei Xie, Hua Luo, Xin-Yuan Zhao, Wei Wei, Mei-Xian Su
Airway remodeling in asthma contributes to airway hyperreactivity, loss of lung function and persistent symptoms. Current therapies do not adequately treat the structural airway changes associated with asthma. Statin drugs have improved respiratory health and their therapeutic potential in asthma has been tested in clinical trials. However, the mechanism of action of statins in this context has remained elusive. The present study hypothesized that atorvastatin treatment of ovalbumin-exposed mice attenuates early features of airway remodeling via a mevalonate-dependent mechanism...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28803775/pulmonary-function-in-patients-with-eosinophilic-chronic-rhinosinusitis
#6
Kensuke Uraguchi, Shin Kariya, Seiichiro Makihara, Mitsuhiro Okano, Takenori Haruna, Aiko Oka, Rumi Fujiwara, Yohei Noda, Kazunori Nishizaki
OBJECTIVE: There is a close relationship between upper and lower respiratory tract diseases. Chronic rhinosinusitis patients frequently have lung diseases including asthma and chronic obstructive pulmonary disease. Eosinophilic chronic rhinosinusitis is considered a refractory and intractable subtype of chronic rhinosinusitis. However, there has been no report on pulmonary function in patients with eosinophilic chronic rhinosinusitis. The purpose of this study is to examine the pulmonary function in eosinophilic chronic rhinosinusitis patients and non-eosinophilic chronic rhinosinusitis patients, and evaluate clinical factors associated with the pulmonary function of these patients...
August 10, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28797732/more-than-a-decade-follow-up-in-severe-or-difficult-to-treat-asthma-tenor-ii
#7
Bradley E Chipps, Tmirah Haselkorn, Brandee Paknis, Benjamin Ortiz, Eugene R Bleecker, Farid Kianifard, Aimee J Foreman, Stanley J Szefler, Robert S Zeiger
BACKGROUND: The Epidemiology and Natural History of Asthma: Outcomes and Treatment Regimens (TENOR I) study demonstrated high morbidity in patients with severe/difficult-to-treat asthma, despite standard-of-care treatment. OBJECTIVE: To determine the long-term natural history of disease and outcomes in patients in TENOR I, after more than a decade. METHODS: TENOR I was a multicenter, observational study (2001-2004) of 4756 patients with severe/difficult-to-treat asthma...
August 7, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28796240/glucocorticoid-receptor-expression-on-circulating-leukocytes-in-healthy-and-asthmatic-adolescents-in-response-to-exercise
#8
Kim D Lu, Dan Cooper, Fadia Haddad, Frank Zaldivar, Monica Kraft, Shlomit Radom-Aizik
BackgroundPoor aerobic fitness is associated with worsening of asthma symptoms, and fitness training may improve asthma control. The mechanism linking fitness with asthma is not known. We hypothesized that repeated bouts of exercise would lead to a downregulation of glucocorticoid receptor (GR) expression on circulating leukocytes, reflecting a reduced responsiveness to stress.MethodsIn a prospective exercise training intervention of healthy and asthmatic adolescents, GR expression in leukocytes was measured using flow cytometry in response to an acute exercise challenge before and after the exercise training intervention...
August 2017: Pediatric Research
https://www.readbyqxmd.com/read/28783682/myosin-light-chains-9-and-12-are-functional-ligands-for-cd69-that-regulate-airway-inflammation
#9
Koji Hayashizaki, Motoko Y Kimura, Koji Tokoyoda, Hiroyuki Hosokawa, Kenta Shinoda, Kiyoshi Hirahara, Tomomi Ichikawa, Atsushi Onodera, Asami Hanazawa, Chiaki Iwamura, Jungo Kakuta, Kenzo Muramoto, Shinichiro Motohashi, Damon J Tumes, Tomohisa Iinuma, Heizaburo Yamamoto, Yuzuru Ikehara, Yoshitaka Okamoto, Toshinori Nakayama
Recent decades have witnessed a rapid worldwide increase in chronic inflammatory disorders such as asthma. CD4(+) T helper 2 cells play critical roles in the pathogenesis of allergic airway inflammation, and CD69 expression on activated CD4 T cells is required to induce allergic inflammation in tissues. However, how CD69 mechanistically controls allergic inflammation remains poorly defined. In lymphoid tissues, CD69 regulates cellular retention through inhibition of S1P1 expression and requires no specific ligands to function...
September 16, 2016: Science Immunology
https://www.readbyqxmd.com/read/28781336/serum-eosinophil-cationic-protein-is-a-useful-marker-for-assessing-the-efficacy-of-inhaled-corticosteroid-therapy-in-children-with-bronchial-asthma
#10
Cai-Li Guo, Xiao-Min Sun, Xiao-Wen Wang, Qing Guo
Bronchial asthma (BA) is a chronic inflammatory disorder of airways for which the effective therapies include inhaled corticosteroids (ICS) and short-acting β2-adrenoreceptor agonist (SABA). Serum eosinophil cationic protein (ECP) has been reported to reflect the degree of airway inflammation. We, therefore, explored the implication of serum ECP in assessing the efficacy of ICS therapy in BA children. Our prospective randomized control study enrolled 126 BA children and 78 healthy children (the control group)...
August 2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28776450/pharmacological-modulation-of-reactive-oxygen-species-ros-improves-the-airway-hyperresponsiveness-by-shifting-the-th1-response-in-allergic-inflammation-induced-by-ovalbumin
#11
Renata Tiscoski Nesi, Mavina Valente Barroso, Valdirene de Souza Muniz, Ana Carolina de Arantes, Marco Aurélio Martins, Lycia de Brito Gitirana, Josiane Sabbadini Neves, Cláudia Farias Benjamim, Manuella Lanzetti, Samuel Santos Valença
Asthma is an allergic inflammation driven by the Th2 immune response with release of such cytokines as IL-4 and IL-13, which contribute to the airflow limitations and airway hyperresponsiveness (AHR). The involvement of oxidative stress in this process is well-established, but the specific role of the superoxide anion and nitric oxide in asthma are poorly understood. Thus, the aim of this study was to investigate the mechanisms underlying the superoxide anion/nitric oxide production and detoxification in a murine asthma model...
August 4, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28775364/dnp2-ctctla-4-inhibits-german-cockroach-extract-induced-allergic-airway-inflammation-and-hyper-responsiveness-via-inhibition-of-th2-responses
#12
Sangho Lim, Jung Ho Sohn, Ja-Hyun Koo, Jung-Won Park, Je-Min Choi
German cockroaches are major household allergens that can trigger allergic airway inflammatory diseases with sensitive T-cell responses. Although the use of immune modulatory biologics, such as antibodies, to mediate allergic responses has recently been examined, only systemic administration is available because of the size limitations on intranasal administration. Here we utilized a cell-permeable peptide, dNP2, to deliver the cytoplasmic domain of cytotoxic T-lymphocyte antigen-4 (ctCTLA-4) through the airway epithelium to modulate Th2 responses in a German cockroach extract (GCE)-induced allergic airway inflammation model...
August 4, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28771844/assessment-of-eosinophilic-airway-inflammation-as-a-contribution-to-the-diagnosis-of-occupational-asthma
#13
Carolina Beretta, Catherine Rifflart, Geneviève Evrard, Jacques Jamart, Joël Thimpont, Olivier Vandenplas
BACKGROUND: Ascertaining the presence of asthma through the assessment of nonspecific bronchial hyperresponsiveness (NSBH) is a key step in the diagnosis of occupational asthma (OA). We aimed at investigating whether indices of airway inflammation including fractional exhaled nitric oxide (FeNO) and sputum eosinophils would be useful adjuncts to the measurement of NSBH in diagnosing OA defined as a positive specific inhalation challenge (SIC). METHODS: The study included 240 consecutive subjects with a suspicion of OA who completed a SIC, of whom 133 showed a positive response...
August 3, 2017: Allergy
https://www.readbyqxmd.com/read/28771101/natural-helper-cells-mediate-respiratory-syncytial-virus-induced-airway-inflammation-by-producing-type-2-cytokines-in-an-il-33-dependent-manner
#14
Xu Han, Ruonan Chai, Feifei Qi, Song Bai, Yulin Cui, Yuee Teng, Beixing Liu
AIM: Type 2 cytokine production during respiratory virus infection is considered to be linked with asthma exacerbation. As potent Th2 cytokine producers, natural helper (NH) cells play a key role in influenza virus-induced airway hyper-responsiveness. However, it is unclear whether NH cells contribute to respiratory syncytial virus (RSV)-induced airway inflammation, and how the cytokine profile in NH cells is changed during RSV infection. METHODS: BALB/c mice were infected intranasally with RSV...
August 3, 2017: Immunotherapy
https://www.readbyqxmd.com/read/28770202/cysteinyl-leukotrienes-in-eosinophil-biology-functional-roles-and-therapeutic-perspectives-in-eosinophilic-disorders
#15
REVIEW
Glaucia A Thompson-Souza, Isabella Gropillo, Josiane S Neves
Cysteinyl leukotrienes (cysLTs), LTC4, and its extracellular metabolites, LTD4 and LTE4, have varied and multiple roles in mediating eosinophilic disorders including host defense against parasitic helminthes and allergic inflammation, especially in the lung and in asthma. CysLTs are known to act through at least 2 receptors termed cysLT1 receptor (CysLT1R) and cysLT2 receptor (CysLT2R). Eosinophils contain a dominant population of cytoplasmic crystalloid granules that store various preformed proteins. Human eosinophils are sources of cysLTs and are known to express the two known cysLTs receptors (CysLTRs)...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28765821/increased-antioxidant-activity-after-exposure-of-ozone-in-murine-asthma-model
#16
Yang Ki Kim, So My Koo, Kiup Kim, Soo-Taek Uh, Ahnsoo Jang, Choon-Sik Park
BACKGROUND: Ozone is well known as an important component of ambient air pollutants. Ozone can aggravate respiratory symptoms in patients with bronchial asthma, but, not in healthy person. We hypothesized asthma itself may show different response to ozone compared to nonasthma. OBJECTIVE: This study was performed to evaluate the differences of response to ozone between normal and asthmatic mice model in terms of status of oxidant injury and antioxidant activity...
July 2017: Asia Pacific Allergy
https://www.readbyqxmd.com/read/28764781/effects-of-the-combined-extracts-of-herba-epimedii-and-fructus-ligustrilucidi-on-airway-remodeling-in-the-asthmatic-rats-with-the-treatment-of-budesonide
#17
Xiufeng Tang, Honglei Nian, Xiaoxi Li, Yan Yang, Xiujuan Wang, Liping Xu, Haotian Shi, Xinwei Yang, Renhui Liu
BACKGROUND: Asthma is characterized by chronic airway inflammation, leading to structura1 changes in the airway, collectively termed airway remodeling. Airway remodeling is thought to contribute to airway hyper responsiveness and irreversible airflow limitation. The combination of Herba Epimedii (HE) and Fructus Ligustri Lucidi (FLL) decoction and the systemic administration of glucocorticoids (GC) had a synergistic inhibitory action on airway inflammation in the asthmatic model rats...
August 1, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28762062/sequential-rituximab-and-omalizumab-for-the-treatment-of-eosinophilic-granulomatosis-with-polyangiitis-churg-strauss-syndrome
#18
REVIEW
David Aguirre-Valencia, Iván Posso-Osorio, Juan-Carlos Bravo, Fabio Bonilla-Abadía, Gabriel J Tobón, Carlos A Cañas
Eosinophilic granulomatosis with polyangiitis (EGPA), formerly known as Churg-Strauss syndrome (CSS), is a small vessel vasculitis associated with eosinophilia and asthma. Clinical manifestations commonly seen in patients presenting with EGPA range from upper airway and lung involvement to neurological, cardiac, cutaneous, and renal manifestations. Treatment for severe presentations includes steroids, cyclophosphamide, plasmapheresis, and recently, rituximab. Rituximab is associated with a good response in the treatment of vasculitis, but a variable response for the control of allergic symptoms...
July 31, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28761563/the-emerging-role-of-the-eosinophil-and-its-measurement-in-chronic-cough
#19
REVIEW
Mahboobeh H Sadeghi, Alyn H Morice
Although the aetiology of chronic cough in guidelines is clearly stated as asthma and related syndromes, gastro-oesophageal reflux disease (GORD), and upper airways disease, the inflammatory mechanisms underlying these conditions differ. Recent studies on asthma have increasingly focused on its molecular phenotypes instead of clinical characteristics. Here, we proposed the hypothesis that divides cough into two groups; the eosinophilic and neutrophilic. This division will enhance our ability to recognise the type of airway inflammation which, as a consequence will lead us to more targeted and personalized treatment approaches...
2017: Open Respiratory Medicine Journal
https://www.readbyqxmd.com/read/28758900/tnf-is-required-for-tlr-ligand-mediated-but-not-protease-mediated-allergic-airway-inflammation
#20
Gregory S Whitehead, Seddon Y Thomas, Karim H Shalaby, Keiko Nakano, Timothy P Moran, James M Ward, Gordon P Flake, Hideki Nakano, Donald N Cook
Asthma is associated with exposure to a wide variety of allergens and adjuvants. The extent to which overlap exists between the cellular and molecular mechanisms triggered by these various agents is poorly understood, but it might explain the differential responsiveness of patients to specific therapies. In particular, it is unclear why some, but not all, patients benefit from blockade of TNF. Here, we characterized signaling pathways triggered by distinct types of adjuvants during allergic sensitization. Mice sensitized to an innocuous protein using TLR ligands or house dust extracts as adjuvants developed mixed eosinophilic and neutrophilic airway inflammation and airway hyperresponsiveness (AHR) following allergen challenge, whereas mice sensitized using proteases as adjuvants developed predominantly eosinophilic inflammation and AHR...
July 31, 2017: Journal of Clinical Investigation
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