Abstract:
BACKGROUND:The FOXP3 gene is the master regulator for T regulatory cells and is under tight DNA methylation control at the Treg specific demethylated region (TSDR) in its first intron. This said, methylation of its promoter region, the significance of which is unknown, has also been associated with various immune-related disease states such as asthma, food allergy, auto-immunity and cancer. Here, we used induced T regulatory cells (iTreg) as a target cell population to identify candidate hypomethylated CpG sites in the FOXP3 gene promoter to design a DNA methylation quantitative assay for this region. FINDINGS:Three CpG sites at the promoter region showed clear demethylation pattern associated with high FOXP3 expression after activation in presence of TGFβ and were selected as primary targets to design methylation-dependent RT-PCR primers and probes. We then examined the methylation of this 'inducible-promoter-demethylated-region' (IPDR) in various FOXP3+ T cell subsets. Both naïve and memory thymic-derived Treg cells were found to be fully demethylated at both the IPDR and TSDR. Interestingly, in addition to iTregs, both CD25- and CD25(lo) conventional memory CD4+CD45RA- T cells displayed a high fraction of IPDR demethylated cells in absence of TSDR demethylation. CONCLUSION:This implies that the fraction of memory T cells should be taken in account when interpreting FOXP3 promoter methylation results from clinical studies. This approach, which is available for testing in clinical samples could have diagnostic and prognostic value in patients with immune or auto-inflammatory diseases.
journal_name
Clin Transl Allergyjournal_title
Clinical and translational allergyauthors
Bégin P,Schulze J,Baron U,Olek S,Bauer RN,Passerini L,Baccheta R,Nadeau KCdoi
10.1186/s13601-015-0079-2subject
Has Abstractpub_date
2015-10-20 00:00:00pages
35issn
2045-7022pii
79journal_volume
5pub_type
杂志文章abstract:BACKGROUND:The efficacy of Lactobacillus paracasei NCC 2461 in modulating allergic rhinitis was previously evaluated in two exploratory clinical studies. Oral administration with NCC 2461 reduced specific subjective symptoms following nasal provocation tests with controlled grass pollen allergen concentrations. Our aim...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-015-0085-4
更新日期:2015-12-09 00:00:00
abstract::Cosmetics and skin care products for neonates and infants are considered as ''hypoallergenic'', "tested" or ''safe''. Nevertheless, the prevalence of haptens in these products is a matter of concern, since allergic contact dermatitis in children is gaining an importance. We aimed to assess the prevalence of haptens in...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-019-0257-8
更新日期:2019-03-08 00:00:00
abstract::Drug hypersensitivity reactions (DHR) have been present since the advent of drugs. In particular T-cell mediated delayed-type hypersensitivity reactions represent a heterogeneous clinical entity with a diverse pathogenesis and result in a considerable burden of morbidity and mortality not only driven by the reactions ...
journal_title:Clinical and translational allergy
pub_type: 杂志文章,评审
doi:10.1186/s13601-015-0073-8
更新日期:2015-09-03 00:00:00
abstract:Background:Chronic rhinosinusitis with nasal polyps (CRSwNP) is a heterogeneous inflammatory disease usually characterized by chronic eosinophilia in the sinonasal mucosa, which often requires glucocorticoid (GC) therapy. However, the therapeutic response varies markedly between individuals. The objective of this study...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-018-0211-1
更新日期:2018-07-02 00:00:00
abstract:Background:In severe asthma, high doses of inhaled corticosteroids (ICS) are used in order to achieve clinical and functional control. This study aimed to evaluate lung function in outpatients (children and adolescents) with severe asthma in Brazil, all of whom were treated with high doses of ICS. We evaluated all spir...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-017-0183-6
更新日期:2017-12-15 00:00:00
abstract:BACKGROUND:With the aim of actively contributing to the ongoing 11(th) International Classification of Diseases (ICD) revision, an international collaboration led by the European Academy of Allergy and Clinical Immunology (EAACI) has decided to revise the classification of hypersensitivity/allergic diseases and to vali...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-015-0063-x
更新日期:2015-06-03 00:00:00
abstract:BACKGROUND:Subcutaneous immunotherapy with high dose grass pollen (typically microgram quantities) was first described over 100 years ago. This treatment suppresses allergen-induced cutaneous late responses, with lesser effects on early responses. We previously reported that repeated 2-weekly intradermal injections of ...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/2045-7022-3-27
更新日期:2013-08-21 00:00:00
abstract:Background:Blood eosinophil count (BEC) and fractional exhaled nitric oxide (FeNO) concentration are established biomarkers in asthma, associated particularly with the risk of exacerbations. We evaluated the relationship of BEC and FeNO as complementary and independent biomarkers of severe asthma exacerbations. Method...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-019-0282-7
更新日期:2019-08-21 00:00:00
abstract:Background:Rhinitis is a common problem within the population. Many subjects with rhinitis also have atopic multimorbidity, such as asthma and eczema. The purpose of this investigation was to compare subjects with only rhinitis to those that have rhinitis, asthma and/or eczema in relation to immunoglobulin E (IgE) sens...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-020-0311-6
更新日期:2020-02-21 00:00:00
abstract:Background:In daily practice, one-third of sesame allergic patients, confirmed by clinical history or food challenge, do not show any detectable specific IgE using current diagnostics. Currently used sesame extracts are water-based and therefore lacking hydrophobic proteins like oleosins. Oleosins, the stabilizer of li...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-019-0271-x
更新日期:2019-06-28 00:00:00
abstract:BACKGROUND:Little is known about prevalence and risk factors of allergic rhinitis and chronic nasal symptoms among adults in Vietnam. We aimed to estimate the prevalence, risk factor patterns and co-morbidities of allergic rhinitis and chronic nasal symptoms in one urban and one rural area in northern Vietnam. METHODS...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/2045-7022-1-7
更新日期:2011-08-11 00:00:00
abstract::Oral allergy syndrome (OAS) is one of the most common IgE-mediated allergic reactions. It is characterized by a number of symptoms induced by the exposure of the oral and pharyngeal mucosa to allergenic proteins belonging to class 1 or to class 2 food allergens. OAS occurring when patients sensitized to pollens are ex...
journal_title:Clinical and translational allergy
pub_type: 杂志文章,评审
doi:10.1186/s13601-020-00329-8
更新日期:2020-06-17 00:00:00
abstract:Background:Evidence for distinct asthma phenotypes and their overlap is becoming increasingly relevant to identify personalized and targeted therapeutic strategies. In this study, we aimed to describe the overlap of five commonly reported asthma phenotypes in US adults with current asthma and assess its association wit...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-018-0201-3
更新日期:2018-05-04 00:00:00
abstract:BACKGROUND:For the development of forecasts for seasonal allergic rhinitis symptoms, it is essential to understand the relationship between grass pollen concentrations and the symptoms of grass pollen allergic patients. OBJECTIVE:The aim of this study was to delineate this relationship between seasonal allergic rhinit...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/2045-7022-1-18
更新日期:2011-12-21 00:00:00
abstract:Background:Vitamin D has been reported to be associated with many allergic diseases. There are a limited number of the studies of vitamin D supplementation in patients with chronic spontaneous urticaria (CSU). This study aims to study the relationship between vitamin D and CSU in terms of serum vitamin D levels, and th...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-018-0234-7
更新日期:2018-12-04 00:00:00
abstract:BACKGROUND:Asthma is a frequent chronic respiratory disease in both children and adults. However, few data on asthma prevalence are available in Portugal. The Portuguese National Asthma Survey is the first nationwide study that uses standardized methods. We aimed to estimate the prevalence of current asthma in the Port...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/2045-7022-2-15
更新日期:2012-08-29 00:00:00
abstract::[This corrects the article DOI: 10.1186/s13601-019-0303-6.]. ...
journal_title:Clinical and translational allergy
pub_type: 已发布勘误
doi:10.1186/s13601-020-00343-w
更新日期:2020-09-28 00:00:00
abstract:Background:Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) and erythema multiforme (EM) are immunologically-mediated dermatological disorders commonly triggered by drug exposure and/or other external agents. We aimed to characterise SJS/TEN- and EM-drug-related hospitalisations in a nationwide administrat...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-017-0188-1
更新日期:2018-01-22 00:00:00
abstract:UNLABELLED: BACKGROUND:The transition to adulthood can be particularly challenging for young people with severe allergies, who must learn to balance personal safety with independent living. Information and support for young people and their families are crucial to successfully managing this transition. We sought to: g...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/2045-7022-3-2
更新日期:2013-01-22 00:00:00
abstract:BACKGROUND:The 300IR (index of reactivity) 5-grass pollen tablet has favorable short-term and sustained clinical efficacy in patients with grass pollen-induced allergic rhinoconjunctivitis (ARC). Here, we report maintenance of efficacy and safety over 2 years following treatment discontinuation. METHODS:Randomized, do...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-015-0057-8
更新日期:2015-05-22 00:00:00
abstract:Background:Pollen is a major cause of allergic respiratory diseases. In Qatar, data on the presence and prevalence of allergenic airborne types of pollen is quite limited. Methods:The study aimed to determine and correlate the most frequently implicated airborne pollen detected by aerobiological monitoring samplers in...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-020-00339-6
更新日期:2020-08-10 00:00:00
abstract:BACKGROUND:The European Academy of Allergy and Clinical Immunology is developing guidelines about how to prevent and manage food allergy. As part of the guidelines development process, a systematic review is planned to examine published research about the prevention of food allergy. This systematic review is one of sev...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/2045-7022-3-10
更新日期:2013-03-28 00:00:00
abstract:Background:Susceptibility to pepsin digestion of candidate transgene products is regarded an important parameter in the weight-of-evidence approach for allergenicity risk assessment of genetically modified crops. It has been argued that protocols used for this assessment should better reflect physiological conditions e...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-018-0216-9
更新日期:2018-08-10 00:00:00
abstract:Background:Evidence regarding the clinical effectiveness of mite allergen avoidance for the treatment of asthma is lacking. In previous meta-analyses on mite allergen control, the baseline data were not discussed in detail. This study updates and extends the existing Cochrane review by Gøtzsche and Johansen (Cochrane D...
journal_title:Clinical and translational allergy
pub_type: 杂志文章,评审
doi:10.1186/s13601-019-0306-3
更新日期:2020-01-06 00:00:00
abstract:Background:Fungal and bacterial microbiota play an important role in development of asthma. We aim to characterize airway microbiome (mycobiome, bacteriome) and functional genes in asthmatics and controls. Methods:Sputum microbiome of controls, untreated asthma patients and inhaled corticosteroid (ICS) receiving patie...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-020-00345-8
更新日期:2020-10-22 00:00:00
abstract::Rhinitis and rhinosinusitis are the two major clinical entities of chronic upper airway disease. Chronic rhinosinusitis (CRS) and allergic rhinitis (AR) affect respectively up to 10 and 30% of the total population, hence being associated with an important socio-economic burden. Different phenotypes of rhinitis and CRS...
journal_title:Clinical and translational allergy
pub_type: 杂志文章,评审
doi:10.1186/s13601-017-0157-8
更新日期:2017-07-12 00:00:00
abstract:Background:Patients with chronic rhinosinusitis with nasal polyps (CRSwNP) and comorbid asthma have more severe disease and are difficult to treat. However, the molecular endotypes associated with CRSwNP with comorbid asthma (CRSwNP + AS) are not clear. This study aimed to investigate the characteristics of type 2 infl...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/s13601-020-00332-z
更新日期:2020-07-03 00:00:00
abstract:BACKGROUND:Although efforts to improve the classification of hypersensitivity/allergic diseases have been made, they have not been considered a top-level category in the International Classification of Diseases (ICD)-10 and still are not in the ICD-11 beta phase linearization. ICD-10 is the most used classification sys...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/2045-7022-4-42
更新日期:2014-11-28 00:00:00
abstract:BACKGROUND:Indoleamine 2,3-dioxygenase (IDO) is a tryptophan catalyzing enzyme. It has been suggested that it has a role in lower airway allergic inflammations, but its role in allergic rhinitis has not been investigated. OBJECTIVE:Our aim was to evaluate the expression of IDO in the nasal mucosa of allergic rhinitis ...
journal_title:Clinical and translational allergy
pub_type: 杂志文章
doi:10.1186/2045-7022-1-17
更新日期:2011-12-12 00:00:00
abstract:BACKGROUND:The introduction of whole new foods in a population may lead to sensitization and food allergy. This constitutes a potential public health problem and a challenge to risk assessors and managers as the existing understanding of the pathophysiological processes and the currently available biological tools for ...
journal_title:Clinical and translational allergy
pub_type: 杂志文章,评审
doi:10.1186/s13601-017-0152-0
更新日期:2017-05-12 00:00:00