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Treatment Resistent Asthma

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https://www.readbyqxmd.com/read/28911045/azole-resistant-aspergillosis-epidemiology-molecular-mechanisms-and-treatment
#1
REVIEW
Anuradha Chowdhary, Cheshta Sharma, Jacques F Meis
Aspergillus fumigatus remains the most common species in all pulmonary syndromes, followed by Aspergillus flavus which is a common cause of allergic rhinosinusitis, postoperative aspergillosis and fungal keratitis. The manifestations of Aspergillus infections include invasive aspergillosis, chronic pulmonary aspergillosis and bronchitis. Allergic manifestations of inhaled Aspergillus include allergic bronchopulmonary aspergillosis and severe asthma with fungal sensitization. Triazoles are the mainstay of therapy against Aspergillus infections for treatment and prophylaxis...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28891139/helicobacter-pylori-infection-in-children
#2
REVIEW
Nicolas Kalach, Patrick Bontems, Josette Raymond
Helicobacter pylori infection in children differs from that in adults, from the point of view of epidemiology, host response, clinical features, related diseases, and diagnosis, as well as treatment strategies. The prevalence of H. pylori infection, in both children and adults, is decreasing in the Western World as well as in some developing countries, which contrasts with the increase in childhood asthma and allergic diseases. Recurrent abdominal pain is not specific during H. pylori infection in children...
September 2017: Helicobacter
https://www.readbyqxmd.com/read/28884988/assessment-of-allergen-specific-ige-by-immunoblotting-method-in-atopic-dermatitis
#3
M R Bonyadi, D Hassanzadeh, N Seyfizadeh, S Borzoueisileh
Background and Objectives. Stimulating the immune system by exposure to various allergens to produce specific IgE has a significant role in the pathogenesis of atopic dermatitis. Identifying disease-causing allergens, prevention of exposure to those allergens, and immunotherapy will play an important role in the treatment of Atopic Disease. The purpose of this study was to determine the common allergens of northwest of Iran in patients with atopic dermatitis that are resistant to treatment. Materials and methods...
September 2017: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28880396/drug-repurposing-to-treat-asthma-and-allergic-disorders-progress-and-prospects
#4
REVIEW
Robert L Kruse, Kristine Vanijcharoenkarn
Allergy and atopic asthma have continued to become more prevalent in modern society despite the advent of new treatments, representing a major global health problem. Common medications such as antihistamines and steroids may have undesirable long-term side effects and lack efficacy in some resistant patients. Biologic medications are increasingly given to treat resistant patients, but they can represent high costs, complex dosing and management, and are not widely available around the world. The field needs new, cheap and convenient treatment options in order to bring better symptom relief to patients...
September 7, 2017: Allergy
https://www.readbyqxmd.com/read/28851976/linoleic-acid-metabolite-leads-to-steroid-resistant-asthma-features-partially-through-nf-%C3%AE%C2%BAb
#5
Lipsa Panda, Atish Gheware, Rakhshinda Rehman, Manish K Yadav, B S Jayaraj, SubbaRao V Madhunapantula, Padukudru Anand Mahesh, Balaram Ghosh, Anurag Agrawal, Ulaganathan Mabalirajan
Studies have highlighted the role of nutritional and metabolic modulators in asthma pathobiology. Steroid resistance is an important clinical problem in asthma but lacks good experimental models. Linoleic acid, a polyunsaturated fatty acid, has been linked to asthma and glucocorticoid sensitivity. Its 12/15-lipoxygenase metabolite, 13-S-hydroxyoctadecadienoic acid (HODE) induces mitochondrial dysfunction, with severe airway obstruction and neutrophilic airway inflammation. Here we show that HODE administration leads to steroid unresponsiveness in an otherwise steroid responsive model of allergic airway inflammation (AAI)...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28846444/validity-of-fractional-exhaled-nitric-oxide-and-small-airway-function-indices-in-diagnosis-of-cough-variant-asthma
#6
Chen Feng-Jia, Huang Xin-Yan, Lin Geng-Peng, Liu Yang-Li, Xie Can-Mao
BACKGROUND: Fractional exhaled nitric oxide (FeNO) is a non-invasive method used to reveal the eosinophilic inflammation of airway and to diagnose and manage asthma. The diagnostic value of FeNO in patients with cough variant asthma (CVA) is poorly understood. Small airways remain an important aspect of CVA. The use of FeNO measurement or its combination with the small airway function in differentiating CVA patients from chronic cough patients is unexplored. METHODS: From December 2012 to June 2016, patients with chronic nonproductive cough for more than 8 weeks without any wheezing or dyspnea, fever or blood-stained sputum, and abnormalities on X-ray or larger airways function based on physician's opinion were subjected to FeNO, pulmonary function, and bronchial hyperresponsiveness (BHR) tests...
August 28, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28826280/severe-therapy-resistant-asthma-in-children-translational-approaches-to-uncover-sub-phenotypes
#7
Aldara Martin Alonso, Valentina Fainardi, Sejal Saglani
Paediatric severe therapy resistant asthma (STRA) affects a very small proportion of all children with asthma, but results in significant morbidity, has a high risk of mortality and utilises approximately half of all healthcare resources for childhood asthma. children with STRA need add-on 'beyond guidelines' therapies because of poor control despite maximal conventional treatments and optimisation of basic asthma management. however, STRA is heterogeneous with marked phenotypic variation between patients and mechanisms from adult severe asthma cannot be extrapolated to children...
August 21, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28782595/dhea-supplementation-to-dexamethasone-treated-rabbits-alleviates-oxidative-stress-in-kidney-cortex-and-attenuates-albuminuria
#8
Anna Kiersztan, Nina Trojan, Aleksandra Tempes, Paweł Nalepa, Joanna Sitek, Katarzyna Winiarska, Michał Usarek
Our recent study has shown that dehydroepiandrosterone (DHEA) administered to rabbits partially ameliorated several dexamethasone (dexP) effects on hepatic and renal gluconeogenesis, insulin resistance and plasma lipid disorders. In the current investigation, we present the data on DHEA protective action against dexP-induced oxidative stress and albuminuria in rabbits. Four groups of adult male rabbits were used in the in vivo experiment: (1) control, (2) dexP-treated, (3) DHEA-treated and (4) both dexP- and DHEA-treated...
August 4, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28774699/pulmonary-and-sinus-fungal-diseases-in-non-immunocompromised-patients
#9
REVIEW
David W Denning, Arunaloke Chakrabarti
The human respiratory tract is exposed daily to airborne fungi, fungal enzymes, and secondary metabolites. The endemic fungi Histoplasma capsulatum, Coccidioides spp, Blastomyces dermatitidis, and Paracoccidioides brasiliensis, and occasionally Aspergillus fumigatus, are primary pulmonary pathogens of otherwise healthy people. Such infections resolve in most people, and only a few infections lead to disease. However, many fungi are directly allergenic by colonising the respiratory tract or indirectly through contact with cell wall constituents and proteases, causing or exacerbating allergic disease...
July 31, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28755856/th9-cells-induce-steroid-resistant-bronchial-hyperresponsiveness-in-mice
#10
Mayumi Saeki, Osamu Kaminuma, Tomoe Nishimura, Noriko Kitamura, Akio Mori, Takachika Hiroi
BACKGROUND: Reduced responsiveness to corticosteroid therapy is a major problem for patients with severe asthma. Although Th9 cells, along with Th2 cells, facilitate antigen-induced airway eosinophilia and bronchial hyperresponsiveness (BHR), the sensitivity of Th9 cell-mediated responses to steroid therapy remains unknown. In this study, we investigated the effect of dexamethasone (Dex) on antigen-induced airway inflammation in Th9 cell-transferred mice. METHODS: Ovalbumin (OVA)-specific Th2 and Th9 cells were polarized from the CD4(+) T cells of DO11...
July 26, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28746467/tangeretin-has-anti-asthmatic-effects-via-regulating-pi3k-and-notch-signaling-and-modulating-th1-th2-th17-cytokine-balance-in-neonatal-asthmatic-mice
#11
L-L Liu, F-H Li, Y Zhang, X-F Zhang, J Yang
Asthma is a chronic allergic disease characterized by airway inflammation, airway hyper-responsiveness (AHR), and mucus hypersecretion. T-lymphocytes are involved in the pathogenesis of asthma, mediating airway inflammatory reactions by secreting cytokines. The phosphoinositide 3-kinase (PI3K) and Notch signaling pathways are associated with T cell signaling, proliferation, and differentiation, and are important in the progression of asthma. Thus, compounds that can modulate T cell proliferation and function may be of clinical value...
July 20, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28727997/therapeutic-intranasal-instillation-of-allergen-loaded-microbubbles-suppresses-experimental-allergic-asthma-in-mice
#12
Blaise Corthésy, Gilles Bioley
Despite proven efficiency, subcutaneous immunotherapy for aeroallergens is impaired by the duration of the protocol, the repeated injections and potential side-effects associated with the doses of allergen administered. Intranasal delivery of immunotherapeutic agents may overcome several of these drawbacks, provided that an efficient allergen delivery vehicle can be identified. This study evaluates whether intranasally delivered gas-filled microbubble (MB)-associated ovalbumin (OVA), used as a model allergen, can serve as a therapeutic treatment in a mouse model of established allergic asthma...
October 2017: Biomaterials
https://www.readbyqxmd.com/read/28725641/mechanisms-mediating-pediatric-severe-asthma-and-potential-novel-therapies
#13
REVIEW
Aldara Martin Alonso, Sejal Saglani
Although a rare disease, severe therapy-resistant asthma in children is a cause of significant morbidity and results in utilization of approximately 50% of health-care resources for asthma. Improving control for children with severe asthma is, therefore, an urgent unmet clinical need. As a group, children with severe asthma have severe and multiple allergies, steroid resistant airway eosinophilia, and significant structural changes of the airway wall (airway remodeling). Omalizumab is currently the only add-on therapy that is licensed for use in children with severe asthma...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28679952/severe-asthma-in-humans-and-mouse-model-suggests-a-cxcl10-signature-underlies-corticosteroid-resistant-th1-bias
#14
Marc Gauthier, Krishnendu Chakraborty, Timothy B Oriss, Mahesh Raundhal, Sudipta Das, Jie Chen, Rachael Huff, Ayan Sinha, Merritt Fajt, Prabir Ray, Sally E Wenzel, Anuradha Ray
We previously showed that Th1/type 1 inflammation marked by increased IFN-γ levels in the airways can be appreciated in 50% of patients with severe asthma, despite high dose corticosteroid (CS) treatment. We hypothesized that a downstream target of IFN-γ, CXCL10, which recruits Th1 cells via the cognate receptor CXCR3, is an important contributor to Th1high asthma and CS unresponsiveness. We show high levels of CXCL10 mRNA closely associated with IFNG levels in the BAL cells of 50% of severe asthmatics and also in the airways of mice subjected to a severe asthma model, both in the context of high-dose CS treatment...
July 6, 2017: JCI Insight
https://www.readbyqxmd.com/read/28666799/ovatodiolide-suppresses-allergic-airway-inflammation-and-hyperresponsiveness-in-a-murine-model-of-asthma
#15
Chien-Neng Wang, Yueh-Lun Lee, Yu-Pei Lin, Wen-Hui Chung, Yew-Min Tzeng, Chen-Chen Lee
Asthma, a complex pulmonary allergic disease, major therapy is applied of drugs to control the disease, but quickly recur after the drugs are stopped. In patients with severe asthma may show steroid resistance and would benefit from the development of novel therapeutic drugs. Ovatodiolide, a unique macrocyclic diterpenoid isolated from Anisomeles indica, showed therapeutic potential for the treatment of allergic asthma. As a model of allergic inflammation, we used ovalbumin (OVA)-immunized mice, which displayed T helper cell type 2 (TH2) cytokine expression in bronchoalveolar lavage fluid (BALF), as well as airway inflammation and hyperresponsiveness (AHR)...
June 27, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28658552/mechanisms-and-treatments-for-severe-steroid-resistant-allergic-airway-disease-and-asthma
#16
REVIEW
Philip M Hansbro, Richard Y Kim, Malcolm R Starkey, Chantal Donovan, Kamal Dua, Jemma R Mayall, Gang Liu, Nicole G Hansbro, Jodie L Simpson, Lisa G Wood, Jeremy A Hirota, Darryl A Knight, Paul S Foster, Jay C Horvat
Severe, steroid-resistant asthma is clinically and economically important since affected individuals do not respond to mainstay corticosteroid treatments for asthma. Patients with this disease experience more frequent exacerbations of asthma, are more likely to be hospitalized, and have a poorer quality of life. Effective therapies are urgently required, however, their development has been hampered by a lack of understanding of the pathological processes that underpin disease. A major obstacle to understanding the processes that drive severe, steroid-resistant asthma is that the several endotypes of the disease have been described that are characterized by different inflammatory and immunological phenotypes...
July 2017: Immunological Reviews
https://www.readbyqxmd.com/read/28658551/spectrum-of-t-lymphocyte-activities-regulating-allergic-lung-inflammation
#17
REVIEW
Erwin W Gelfand, Anthony Joetham, Meiqin Wang, Katsuyuki Takeda, Michaela Schedel
Despite advances in the treatment of asthma, optimization of symptom control remains an unmet need in many patients. These patients, labeled severe asthma, are responsible for a substantial fraction of the disease burden. In these patients, research is needed to define the cellular and molecular pathways contributing to disease which in large part are refractory to corticosteroid treatment. The causes of steroid-resistant asthma are multifactorial and result from complex interactions of genetics, environmental factors, and innate and adaptive immunity...
July 2017: Immunological Reviews
https://www.readbyqxmd.com/read/28642859/exercise-induced-bronchospasm-and-allergy
#18
REVIEW
Serena Caggiano, Renato Cutrera, Antonio Di Marco, Attilio Turchetta
Sport is an essential part of childhood, with precious and acknowledged positive health effects but the impact of exercise-induced bronchoconstriction (EIB) significantly reduces participation in physical activity. It is important to recognize EIB, differentiating EIB with or without asthma if the transient narrowing of the airways after exercise is associated with asthmatic symptoms or not, in the way to select the most appropriate treatment among the many treatment options available today. Therapy is prescribed based on symptoms severity but diagnosis of EIB is established by changes in lung function provoked by exercise evaluating by direct and indirect tests...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28641517/the-case-for-cannabinoid-cb1-receptors-as-a-target-for-bronchodilator-therapy-for-%C3%AE-agonist-resistant-asthma
#19
John Ashton, Robert J Hancox
Although b2-receceptor agonists are powerful bronchodilators and are at the forefront of asthma symptom relief, patients who use them frequently develop partial resistance to them. This can be a particularly serious problem during severe attacks, where high dose b2-agonist treatment is the front line therapy. Alternative bronchodilators are urgently needed. In this article we review the evidence for the bronchodilator effects of the cannabinoid CB1 receptor tetrahydrocannabinol (THC) and suggest that the mechanism of action for these effects are sufficiently independent of the mechanisms of standard bronchodilators to warrant clinical investigation...
June 15, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28572736/asthma-like-airway-inflammation-and-responses-in-a-rat-model-of-atopic-dermatitis-induced-by-neonatal-capsaicin-treatment
#20
Rafael Taeho Han, Sewon Kim, Kyungmin Choi, Hyeonseok Jwa, JaeHee Lee, Hye Young Kim, Hee Jin Kim, Hang-Rae Kim, Seung Keun Back, Heung Sik Na
Recent studies have shown that approximately 70% of patients with severe atopic dermatitis (AD) develop asthma. Development of AD in infancy and subsequent other atopic diseases such as asthma in childhood is referred to as atopic march. However, a causal link between the diseases of atopic march has remained largely unaddressed, possibly due to lack of a proper animal model. Recently, we developed an AD rat model showing chronically relapsing dermatitis and scratching behaviors induced by neonatal capsaicin treatment...
2017: Journal of Asthma and Allergy
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