May 7, 2013

World Asthma Day 2013: it's time to control asthma - Collection of articles on asthma control published in the last year across some open access journals


World Asthma Day 2013: it's time to control asthma

In recognition of World Asthma Day 2013, we have brought together a collection of articles on asthma control published in the last year across some of our open access journals. Further information about the collection can be found in our blog post.
Collection published: 3 May 2013

Research article   Open Access Highly Accessed
Marianne Doz, Christos Chouaid, Laure Com-Ruelle, Eduardo Calvo, Max Brosa, Julien Robert, Laurent Decuypère, Celine Pribil, Alicia Huerta, Bruno DetournayBMC Pulmonary Medicine 2013, 13:15 (22 March 2013)
Research   Open Access Highly Accessed
Hamdan AL-Jahdali, Anwar Ahmed, Abdullah AL-Harbi, Mohd Khan, Salim Baharoon, Salih Bin Salih, Rabih Halwani, Saleh Al-MuhsenAllergy, Asthma & Clinical Immunology 2013, 9:8 (6 March 2013)
Research   Open Access Highly Accessed
Pranav K Gandhi, Kelly M Kenzik, Lindsay A Thompson, Darren A DeWalt, Dennis A Revicki, Elizabeth A Shenkman, I-Chan HuangRespiratory Research 2013, 14:26 (23 February 2013)
Research article   Open Access Highly Accessed
Kit Huckvale, Mate Car, Cecily Morrison, Josip CarBMC Medicine 2012, 10:144 (22 November 2012)
Research article   Open Access
Nicola J Roberts, Kathleen A Boyd, Andrew H Briggs, Ann L Caress, Martyn R PartridgeBMC Pulmonary Medicine 2012, 12:52 (8 September 2012)
Research   Open Access Highly Accessed
Joao A Fonseca, Luis Nogueira-Silva, Mario Morais-Almeida, Ana Sa-Sousa, Luis F Azevedo, Jose Ferreira, Manuel Branco-Ferreira, Rodrigo Rodrigues-Alves, Antonio Bugalho-Almeida, Jean BousquetClinical and Translational Allergy 2012, 2:16 (30 August 2012)
Original research article   Open Access
Isabella Annesi-Maesano, Carla Sterlin, Denis Caillaud, Fréderic de Blay, François Lavaud, Denis Charpin, Chantal RaherissonMultidisciplinary Respiratory Medicine 2012, 7:24 (8 August 2012)
Editorial   Open Access
Giuliana Ferrante, Stefania La GruttaMultidisciplinary Respiratory Medicine 2012, 7:23 (8 August 2012)
Research   Open Access Highly Accessed
Amy Boyd, Celeste T Yang, Kim Estell, Craig MS, Lynn B Gerald, Mark Dransfield, Marcas Bamman, James Bonner, T Atkinson, Lisa M SchwiebertAllergy, Asthma & Clinical Immunology 2012, 8:13 (3 August 2012)
Research   Open Access Highly Accessed
José Olaguibel, Santiago Quirce, Berta Juliá, Cristina Fernández, Ana Fortuna, Jesús Molina, Vicente Plaza, on behalf of the MAGIC Study GroupRespiratory Research 2012, 13:50 (22 June 2012)

May 6, 2013

Defensins and their role in the maintenance of the oral cavity homeostasis – a literature review



Review paper
Defensins and their role in the maintenance of the oral cavity homeostasis – a literature review

Zuzanna Ślebioda, Elżbieta Szponar, Anna Kowalska

(Centr Eur J Immunol 2013; 38 (1): 111-117)
DOI (digital object identifier): 10.5114/ceji.2013.34367
The maintenance of the local and systemic homeostasis in the human body depends on several specific and non-specific protective mechanisms. An important and one of the oldest elements of the innate, non-specific immunity in multicellular organisms are the defensins – very active, antimicrobial peptides. This review focuses on the structure and the properties of α, β and θ defensins and their biological role with a special emphasis on the oral environment. Antibacterial, antiviral and antifungal activity of the defensins, their influence on the immune response modulation in the presence of certain pathogens and the impact of their variable expression on the development of systemic diseases are discussed in this paper. We also presented the defensins’ expression sites in the oral cavity, physiologic and pathologic conditions, where the modulated defensins’ expression plays an important role and the potential options for the defensin use in the treatment of selected oral cavity diseases.
keywords:

defensins, antimicrobial peptides, oral cavity diseases, oral mucosa, innate immunity


Influences of Smoking and Aging on Allergic Airway Inflammation in Asthma




Abstract
 REVIEW ARTICLE
Influences of Smoking and Aging on Allergic Airway Inflammation in Asthma

doi:10.2332/allergolint.12-RA-0523

Tadao Nagasaki and Hisako Matsumoto [About this authors]
ABSTRACT
Asthma is a heterogeneous disease with varying phenotypes and numerous risk factors. This condition results from complex interactions between genetic and environmental factors, and active smoking is one of these risk factors. The effects of aging should also be taken into account in these interactions. From an epidemiological standpoint, smokers and/or elderly patients with asthma are not small part in the total population with asthma. Furthermore, both smoking and aging are important risk factors for severe asthma. This review discusses the potential effects of smoking and aging on healthy subjects and patients with asthma, particularly from the perspective of inflammatory changes. First we show evidence that smokers and the elderly have increased neutrophil counts in their airways, which may have impacts on their clinical characteristics of elderly smokers with asthma. Secondly, on the basis of our recent findings on the interactions between smoking and aging in patients with asthma, we propose that IgE/eosinophilic inflammation should not be underestimated in elderly smokers with asthma, particularly those who are atopic. This review may expand our understanding of the effects of smoking and aging on asthma with a new perspective of an old issue.
KEY WORDS:
aging, asthma, eosinophils, inflamm-aging, neutrophils, smoking
Received: 6 December 2012.
Accepted: 30 January 2013.
Allergology International : In Press

Sensitization to Skin-associated Microorganisms in Adult Patients with Atopic Dermatitis is of Importance for Disease Severity



Sensitization to Skin-associated Microorganisms in Adult Patients with Atopic Dermatitis is of Importance for Disease Severity

doi: 10.2340/00015555-1465

Abstract:

Atopic dermatitis (AD) is a chronic inflammatory skin disease. Environmental and genetic factors, as well as microbial products from yeasts and bacteria, play a role in triggering the disease. A cohort of 619 adult patients with AD was screened for severity of AD, sensitization to Malassezia sympodialis, Candida albicans, Staphylococcus aureus enterotoxins and Dermatophagoides pteronyssinus. Serum levels of interleukin (IL)-18 were measured. Immunoglobulin E (IgE) sensitization to the combination of both yeast and mite antigens was found to be associated with more severe disease and higher levels of total IgE. AD patients with IgE sensitization to several microbial antigens had more severe disease than those with no IgE sensitization to microbial antigens. Sera from patients with IgE-associated AD showed
higher levels of IL-18. Skin-associated microorganisms are exogenous factors triggering IgE-response and severity of AD. These findings are clinically important, and sensitization to these organisms should be assessed and considered in treatment strategies.

Authors:

Andreas Sonesson, Jacek Bartosik, Julie Christiansen, Ingrid Roscher, Fredrik Nilsson, Artur Schmidtchen, Ove Bäck
Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Biomedical center B14, Tornavägen 10, SE 221 84 Lund, Sweden. E-mail: andreas.sonesson@med.lu.se


Childhood Food Allergies: Current Diagnosis, Treatment, and Management Strategies


Mayo Clinic Proceedings
Volume 88, Issue 5 , Pages 512-526, May 2013

Childhood Food Allergies: Current Diagnosis, Treatment, and Management Strategies


Abstract 

Food allergy is a growing public health concern in the United States that affects an estimated 8% of children. Food allergy is defined as an adverse health effect arising from a specific immune response that occurs reproducibly on exposure to a specific food. Nearly 40% of children with food allergy have a history of severe reactions that if not treated immediately with proper medication can lead to hospitalization or even death. The National Institute of Allergy and Infectious Diseases (NIAID) convened an expert panel in 2010 to develop guidelines outlining evidence-based practices in diagnosing and managing food allergy. The purpose of this review is to aid clinicians in translating the NIAID guidelines into primary care practice and includes the following content domains: (1) the definition and mechanism of childhood food allergy, (2) differences between food allergy and food intolerance, (3) the epidemiology of childhood food allergy in the United States, (4) best practices derived from the NIAID guidelines focused on primary care clinicians’ management of childhood food allergy, (5) emerging food allergy treatments, and (6) future directions in food allergy research and practice. Articles focused on childhood food allergy were considered for inclusion in this review. Studies were restricted to the English language and to those published within the past 40 years. A cross-listed combination of the following words, phrases, and MeSH terms was searched in PubMed and Google Scholar to identify relevant articles: food allergyfood hypersensitivitychildpediatricprevalence, andepidemiology. Additional sources were identified through the bibliographies of the retrieved articles.
 Potential Competing Interests: Dr Gupta is on the speakers bureau for Mylan Inc. Matthew Greenhawt is a speaker and advisory board member for Nutricia. He also had a prior relationship for the past 12 months as speaker and advisory board member for Thermo Fisher.
PII: S0025-6196(13)00195-X
doi:10.1016/j.mayocp.2013.03.005

Incidence and risk factors for exacerbations of asthma during pregnancy


Incidence and risk factors for exacerbations of asthma during pregnancy



Review


(25) Total Article Views


Authors: Ali Z, Ulrik CS

Published Date May 2013 Volume 2013:6 Pages 53 - 60

Zarqa Ali, Charlotte Suppli Ulrik

Department of Pulmonary Medicine, Hvidovre Hospital and University of Copenhagen, Copenhagen, Denmark

Background: Asthma is one of the most common chronic diseases among pregnant women. Acute exacerbations of asthma during pregnancy have an unfavorable impact on pregnancy outcome. This review provides an overview of current knowledge of incidence, mechanisms, and risk factors for acute exacerbations of asthma during pregnancy.
Methods: A narrative literature review was carried out using the PubMed database.
Results: During pregnancy, up to 6% of women with asthma are hospitalized for an acute exacerbation. The maternal immune system is characterized by a very high T-helper-2:T-helper-1 cytokine ratio during pregnancy and thereby provides an environment essential for fetal survival but one that may aggravate asthma. Cells of the innate immune system such as monocytes and neutrophils are also increased during pregnancy, and this too can exacerbate maternal asthma. Severe or difficult-to-control asthma appears to be the major risk factor for exacerbations during pregnancy, but studies also suggest that nonadherence with controller medication and viral infections are important triggers of exacerbations during pregnancy. So far, inconsistent findings have been reported regarding the effect of fetal sex on exacerbations during pregnancy. Other risk factors for exacerbation during pregnancy include obesity, ethnicity, and reflux, whereas atopy does not appear to be a risk factor.
Discussion: The incidence of asthma exacerbations during pregnancy is disturbingly high. Severe asthma – better described as difficult-to-control asthma – nonadherence with controller therapy, viral infections, obesity, and ethnicity are likely to be important risk factors for exacerbations of asthma during pregnancy, whereas inconsistent findings have been reported with regard to the importance of sex of the fetus.

Keywords: acute exacerbations, pregnancy, asthma severity, incidence, risk factors


May 5, 2013

Eosinophilic Inflammation in Allergic Asthma


Logo of frontpharmacol
Front Pharmacol. 2013; 4: 46.
Published online 2013 April 17. doi:  10.3389/fphar.2013.00046
PMCID: PMC3627984

Eosinophilic Inflammation in Allergic Asthma

Abstract

Eosinophils are circulating granulocytes involved in pathogenesis of asthma. A cascade of processes directed by Th2 cytokine producing T-cells influence the recruitment of eosinophils into the lungs. Furthermore, multiple elements including interleukin (IL)-5, IL-13, chemoattractants such as eotaxin, Clara cells, and CC chemokine receptor (CCR)3 are already directly involved in recruiting eosinophils to the lung during allergic inflammation. Once recruited, eosinophils participate in the modulation of immune response, induction of airway hyperresponsiveness and remodeling, characteristic features of asthma. Various types of promising treatments for reducing asthmatic response are related to reduction in eosinophil counts both in human and experimental models of pulmonary allergic inflammation, showing that the recruitment of these cells really plays an important role in the pathophysiology of allergic diseases such asthma.
Keywords: airway remodeling, asthma, eosinophils, experimental models of asthma, inflammation, respiratory hypersensitivity

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    Articles from Frontiers in Pharmacology are provided here courtesy of Frontiers Media SA

    Erythema a computatro


    Logo of cde
    Case Rep Dermatol. 2013 Jan-Apr; 5(1): 111–113.
    Published online 2013 March 29. doi:  10.1159/000350566
    PMCID: PMC3635957

    Erythema a computatro

    Abstract

    Historically, erythema ab igne (EAI) was commonly seen on the shins of individuals working in front of coal stoves or sitting close to a fireplace. In the more recent past, this condition has been primarily observed after repeated application of heating pads. Today, unintentional and unperceived exposure to heat from laptop computers needs to be considered as a potential trigger. A rising number of laptop-induced cases of EAI have been reported recently. For this modern-age version of classic EAI, we propose thus the more accurate neo-Latin term erythema a computatro.
    Key words: Erythema ab igne, Laptop, Heating

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    Articles from Case Reports in Dermatology are provided here courtesy of Karger Publishers