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A blog that publishes updates and open access scientific papers about allergy, asthma and immunology. Editor: Juan Carlos Ivancevich, MD. Specialist in Allergy & Immunology
July 21, 2014
Trends in Specific Immunotherapy for Allergic Rhinitis: A Survey of Chinese ENT Specialists
Epidemiology of allergic rhinitis in Quebec: from a 2008 population-based survey
M. Canuel, MSc; G. Lebel, MSc
Author references:
Institut national de santé publique du Québec (INSPQ), Québec, Quebec, Canada
Correspondence: Magalie Canuel, INSPQ, 945, avenue Wolfe, 4eétage, Québec, QC G1V 5B3; Tel.: 418-650-5115, ext. 5224; Fax: 418-654-3144; Email: magalie.canuel@inspq.qc.ca
Abstract
Introduction: Our objective was to estimate the prevalence of symptoms and the proportion of a lifetime physician-based diagnosis of allergic rhinitis (AR) in the province of Quebec among people aged 15 years and older.
Methods: The 2008 Quebec Population Health Survey provided data on the prevalence of symptoms and proportion of lifetime physician-based diagnoses of AR. The prevalence of symptoms was defined as the proportion of individuals who, in the absence of a cold or the flu, had nasal and ocular symptoms in the 12 months before the survey.
Results: The reported prevalence of AR symptoms was 17%, although 9% did not have a diagnosed condition. Reported prevalence was lowest in those aged 65 years and older (12%) and was more common among women (19%) than men (15%). The estimated prevalence of lifetime physician-based diagnosis was 17%.
Conclusion: AR prevalence is high in Quebec with about 1 in 6 people experiencing symptoms. The condition is underdiagnosed and might also be undertreated.
Keywords: adult, allergic rhinitis, allergy, diagnosis, prevalence, rhinoconjunctivitis, symptoms
Efficacy and safety of fluticasone furoate 100 mug and 200 mug once daily in the treatment of moderate-severe #asthma in adults and adolescents: a 24-week randomised study
Research article
Ashley Woodcock, Jan Lötvall, William W Busse, Eric D Bateman, Sally Stone, Anna Ellsworth and Loretta Jacques
BMC Pulmonary Medicine 2014, 14:113 doi:10.1186/1471-2466-14-113
Published: 9 July 2014Abstract (provisional)
Background
Inhaled corticosteroids are a mainstay of therapy for persistent asthma, but suboptimal adherence with twice-daily use is widespread. Fluticasone furoate (FF) is a new inhaled corticosteroid (ICS) suitable for once-daily dosing in asthma. This study was performed to descriptively assess the efficacy and safety of two doses of FF, with no planned formal statistical hypothesis testing.
Methods
This was a 24-week double-blind, multicentre, parallel-group study (NCT01431950). Patients aged >=12 years with moderate-severe persistent asthma and uncontrolled on mid-high dose ICS were stratified by baseline FEV1 and randomised (1:1) to treatment with FF 100mug or 200mug once daily in the evening. The primary endpoint was change from baseline trough FEV1 after 24 weeks; secondary and other endpoints included peak expiratory flow (PEF) and rescue- and symptom-free 24-hour periods over Weeks 1-24, and Asthma Control TestTM (ACT) score at Week 24. A pre-specified subgroup analysis of patients by randomisation strata was performed for the primary and selected secondary and other endpoints. Safety assessments included adverse events, laboratory and vital sign measurements, and change from baseline in 24-hour urinary cortisol at Week 24.
Results
With FF 100mug and 200mug, least squares mean trough FEV1 improved from baseline by 208mL and 284mL respectively at Week 24; treatment difference: 77mL (95% CI: -39, 192). Similar improvements from baseline in rescue- and symptom-free periods, and morning and evening PEF were observed in both groups. Patients were 42% more likely to be well-controlled (ACT score >=20) with FF 200mug than with FF 100mug. Slightly more patients receiving FF 200mug vs. FF 100mug reported adverse events (63% vs. 59%) and events deemed treatment related (5% vs. -1%). Seven serious adverse events (FF 200mug 4; FF 100mug 3) were reported, none of which were deemed treatment related. No clinically relevant effects of either dose on 24-hour urinary cortisol were observed.
Conclusion
Improvements from baseline in trough FEV1 were observed after 24 weeks of treatment with both doses of FF, with a numerically greater improvement in FEV1 observed in patients receiving FF 200mug. Secondary endpoint findings were similar between groups. No safety concerns were identified during the study.
The complete article is available as a provisional PDF. The fully formatted PDF and HTML versions are in production. |
Anaphylaxis avoidance and management: educating patients and their caregivers
Review
Authors: Järvinen KM, Celestin J
Published Date July 2014 Volume 2014:7 Pages 95 - 104
DOI: http://dx.doi.org/10.2147/JAA.S48611
Received: | 27 February 2014 |
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Accepted: | 12 April 2014 |
Published: | 10 July 2014 |
Division of Allergy and Immunology, Department of Medicine, Albany Medical College, Albany, NY, USA
Abstract: Anaphylaxis is an increasingly prevalent problem in westernized countries. Therefore, it is of utmost importance that the increasing numbers of patients at risk for anaphylaxis receive proper education on the etiology and risk factors as well as appropriate treatment of anaphylaxis with epinephrine. The physician's role is crucial in order to educate the patients and care takers on effective measures to prevent anaphylaxis and empower them to take charge of early recognition and proper management of an anaphylactic reaction to prevent poor outcomes. This review summarizes the clinical presentation, triggers, avoidance, and management of anaphylaxis.
Keywords: food allergy, drug allergy, Hymenoptera, latex
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This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution - Non Commercial (unported, v3.0) License. The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. Permissions beyond the scope of the License are administered by Dove Medical Press Limited. Information on how to request permission may be found at: http://www.dovepress.com/permissions.php
July 17, 2014
Transcription factor IRF4 drives dendritic cells to promote Th2 differentiation
- NIHPA Author Manuscripts
- PMC4003872
Nat Commun. Author manuscript; available in PMC Apr 29, 2014.
Published in final edited form as:
PMCID: PMC4003872
NIHMSID: NIHMS565877
Abstract
Atopic asthma is an inflammatory pulmonary disease associated with Th2 adaptive immune responses triggered by innocuous antigens. While dendritic cells (DCs) are known to shape the adaptive immune response, the mechanisms by which DCs promote Th2 differentiation remain elusive. Herein we demonstrate that Th2-promoting stimuli induce DC expression of IRF4. Mice with conditional deletion of Irf4 in DCs show a dramatic defect in Th2-type lung inflammation, yet retain the ability to elicit pulmonary Th1 anti-viral responses. Using loss- and gain-of-function analysis, we demonstrate that Th2 differentiation is dependent on IRF4 expression in DCs. Finally, IRF4 directly targets and activates the Il10 and Il33 genes in DCs. Reconstitution with exogenous IL-10 and IL-33 recovers the ability of Irf4 deficient DCs to promote Th2 differentiation. These findings reveal a regulatory module in DCs by which IRF4 modulates IL-10 and IL-33 cytokine production to specifically promote Th2 differentiation and inflammation.
Formats:
Abstract
Atopic asthma is an inflammatory pulmonary disease associated with Th2 adaptive immune responses triggered by innocuous antigens. While dendritic cells (DCs) are known to shape the adaptive immune response, the mechanisms by which DCs promote Th2 differentiation remain elusive. Herein we demonstrate that Th2-promoting stimuli induce DC expression of IRF4. Mice with conditional deletion of Irf4 in DCs show a dramatic defect in Th2-type lung inflammation, yet retain the ability to elicit pulmonary Th1 anti-viral responses. Using loss- and gain-of-function analysis, we demonstrate that Th2 differentiation is dependent on IRF4 expression in DCs. Finally, IRF4 directly targets and activates the Il10 and Il33 genes in DCs. Reconstitution with exogenous IL-10 and IL-33 recovers the ability of Irf4
An Overview of Parabens and Allergic Contact Dermatitis
Skin Therapy Letter .com |
Farhaan Hafeez, BA, MS and Howard Maibach, MD
Dermatology of Department, University of California San Francisco, San Francisco, CA, USA
ABSTRACT
Esters of p-hydroxybenzoic acid (parabens) are the most widely used preservatives in cosmetic, pharmaceutical, and industrial products. However, since the 1960s, controversy has surrounded its use and safety as a potential cause of allergic contact dermatitis. Despite the cloud of suspicion that has hovered over parabens ever since, these ubiquitous compounds have withstood four decades of extensive skin testing conducted by a variety of organizations, both North American and European, and now, it seems parabens have shown to be one of the least sensitizing preservatives in commercial use. Of the very limited reports of paraben-induced allergic contact dermatitis, these cases are often attributable to the application of parabens on damaged skin.
Key Words: parabens, allergic contact dermatitis, sensitization, allergen, patch test
Food Hypersensitivity in Mexican Adults at 18 to 50 Years of Age: A Questionnaire Survey
Original Article Open Access
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July 16, 2014
Current Specific Immunotherapy for Allergic Rhinitis: Perspectives from Otorhinolaryngologists
- Allergy Asthma Immunol Res
- v.6(4); Jul 2014
- PMC4077952
Allergy Asthma Immunol Res. Jul 2014; 6(4): 273–275.
Published online Jun 19, 2014. doi: 10.4168/aair.2014.6.4.273
PMCID: PMC4077952
Formats:
Occupational asthma from exposure to rye flour in a Japanese baker
Case Report
You have full text access to this OnlineOpen article
- Chiyako Oshikata1,
- Naomi Tsurikisawa1,*,
- Akemi Saito2,
- Hiroshi Yasueda2and
- Kazuo Akiyama1
Article first published online: 14 JUL 2014
DOI: 10.1002/rcr2.63
- Abstract
- Article
- References
- Cited By
Keywords:
- Baker's asthma;
- bronchial provocation test;
- occupational asthma;
- rye flour;
- wheat flour
Abstract
Three years after beginning employment at a bakery, a 32-year-old Japanese man began experiencing acute asthma exacerbations after exposure to rye flour. Antigen-specific serum IgE antibodies were detected to the albumin and globulin, gliadin, prolamin, and glutenin protein fractions of rye flour purified from the crude antigen, but only to the albumin and globulin fraction of wheat flour. The histamine concentration producing one-half maximal effect was lower for all four rye flour fractions than for the wheat flour fractions. After inhalation of the albumin and globulin fraction of rye flour, forced expiratory volume in 1 sec decreased to 77.7% of that pre-provocation. To our knowledge, this is the first report of baker's asthma due to rye flour in Japan.
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