atopy Dotaz Zobrazit nápovědu
Atopy is excessive production of IgE in response to allergens. We evaluated in patients undergoing allogeneic hematopoietic cell transplantation (HCT) the following hypotheses: (1) Atopy is "curable" in atopic patients receiving HCT from a nonatopic donor (D-R+), and (2) Atopy is transferable from atopic donors to nonatopic recipients (D+R-). Atopic patients with atopic donors (D+R+) and non-atopic patients with non-atopic donors (D-R-) served as controls. We measured levels of multiallergen-specific IgE (A-IgE, atopy defined as ≥0.35 kUA/L) in sera from 54 patients and their donors pre HCT and from the patients at ≥2 years post HCT. Only 7/12 (58%) D- R+ patients became nonatopic after HCT. Only 1/11 (9%) D+R- patients became atopic. Eleven of 13 (85%) D-R- patients remained nonatopic. Unexpectedly, 11/18 (61%) D+R+ patients became nonatopic. In conclusion, contrary to our hypothesis and previous reports, the "cure" of atopy may occur in only some D-R+ patients and the transfer of atopy may occur rarely. The "cure" may not be necessarily due to the exchange of atopic for nonatopic immune system, as the "cure" may also occur in D+R+ patients.
- MeSH
- alergeny MeSH
- časná přecitlivělost * MeSH
- imunoglobulin E MeSH
- lidé MeSH
- transplantace hematopoetických kmenových buněk * MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- alergeny MeSH
- imunoglobulin E MeSH
UNLABELLED: Aim of our study was to evaluate the importance of atopy patch testing with aeroallergens as a diagnostic method in patients suffering from atopic dermatitis. METHOD: The complet dermatological and allergological examinations were performed in 29 patients; 10 men, 19 women with the average age of 27.8 years, min. 17, max. 57 years; with the median SCORAD 24.2 points, s.d. 13.3 points. Wormwood, grass, dog dander, cat dander, dermatophagoides pharinae, dermatophagoides pteronyssinus and birch pollen were examined in diagnostic procedures. Skin prick tests, specific IgE were examined; the atopy patch tests were performed with aeroallergens for skin prick tests in concentration 1 x skin prick tests. RESULTS: Specific IgE and skin prick tests to one or more tested aeroallergens were positive altogether in 27 patients; atopy patch tests were positive only in one of these patients. CONCLUSION: For atopy patch testing with aeroallergens the concentration of 1 x skin prick tests is low to confirme the eczematic reaction in patients suffering from allergy to inhallant allergens.
- MeSH
- alergeny * MeSH
- antigeny roztočů domácího prachu * MeSH
- atopická dermatitida diagnóza etiologie MeSH
- dospělí MeSH
- kočky MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- náplasťové testy * MeSH
- psi MeSH
- pyl * MeSH
- zvířata MeSH
- zvířecí forma lupů * MeSH
- Check Tag
- dospělí MeSH
- kočky MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- psi MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky kontrolované MeSH
- Názvy látek
- alergeny * MeSH
- antigeny roztočů domácího prachu * MeSH
INTRODUCTION: Atopy patch tests (APT) represent a relatively new diagnostic method for identifying the role of airborne allergens in atopic dermatitis flares. This study evaluates the role of airborne allergens in atopic dermatitis flares in a group of adult patients with atopic dermatitis. The primary goal was to detect the frequency of sensitization to these allergens in a group of patients with atopic dermatitis by APT. The secondary goal was to compare the results of APT with specific IgE against the same airborne allergens with regard to sensitivity and specificity. METHODS: Between November 2004 and October 2011, a cohort of 125 patients (37 males and 88 females) with atopic dermatitis was investigated using APT at the 1st Department of Dermatovenereology of the St. Anne Faculty in Brno, Czech Republic. RESULTS: In 36 (28.8%) patients, the APT were positive, and in 89 (71.2%) negative. The most common allergens were house dust mite allergens (12.8%), followed by grass and plant pollen (10.4%) and dog allergens (8%). CONCLUSION: The results indicate that APT is a helpful tool for identifying airborne allergens as triggering factors of atopic dermatitis.
- MeSH
- alergeny * MeSH
- atopická dermatitida diagnóza epidemiologie imunologie MeSH
- dospělí MeSH
- hodnocení rizik MeSH
- incidence MeSH
- kohortové studie MeSH
- látky znečišťující vzduch * imunologie MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- náplasťové testy metody MeSH
- psi MeSH
- retrospektivní studie MeSH
- senzitivita a specificita MeSH
- stupeň závažnosti nemoci MeSH
- zvířata MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- psi MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- srovnávací studie MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- alergeny * MeSH
- látky znečišťující vzduch * MeSH
BACKGROUND: STAT6 has an important role in the IL-4 / IL-13 signalling pathway. Genome - wide association studies have shown that particular polymorphism (SNP) or haplotype variants of STAT6 as well as epigenetic gene modifications are associated with IgE level and asthma in childhood. METHODS: A review of the available literature was performed to map out the function and signalling pathway of STAT6, studies of STAT6 SNPs association with susceptibility to asthma and atopy, covering the years 1997 - 2012 were summarized, and the value of epigenetic and epistatic influences on STAT6 and their relevance to the development of the studied phenotype (atopy or asthma) were determined. RESULTS: There are 2 SNPs (rs71802646 and rs320411) with clinical association and proven functional effect on STAT6 expression. The effect of STAT6 SNPs cumulates in haplotypes and more potently during interaction with SNPs in the genes from the signalling pathway (IL4, IL4Ra, and IL13). Expression of STAT6 is also influenced by DNA methylation. Atopy is traditionally believed to be maternally inherited but there is one report about paternally overtransmitted STAT6 haplotype (TCA haplotype, built from rs324011, rs3024974 and rs4559 SNPs). CONCLUSIONS: STAT6 polymorphisms and their combinations have an important influence on IgE level and development of asthma. However, the interaction between SNPs in the IL-4 / IL-13 signalling pathway is of greater impact. Hypermethylation of the STAT6 promoter is also significant in the regulation of STAT6 expression and this fact opens possibilities for targeting therapy in asthma.
- MeSH
- bronchiální astma genetika MeSH
- genetická epistáze MeSH
- genetická predispozice k nemoci MeSH
- haplotypy MeSH
- imunoglobulin E metabolismus MeSH
- jednonukleotidový polymorfismus MeSH
- lidé MeSH
- transkripční faktor STAT6 genetika MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
- Názvy látek
- imunoglobulin E MeSH
- STAT6 protein, human MeSH Prohlížeč
- transkripční faktor STAT6 MeSH
PURPOSE OF REVIEW: Understanding the pathophysiology of monogenic primary immunodeficiency (PID) with atopic presentation has pivotal implications for intervention strategies and potentially wider polygenic atopic-related traits. This review will discuss advances in gene discovery arising from monogenic defects at the interface between PID and atopy, notably the hyper-IgE syndromes. RECENT FINDINGS: Key molecular pathways underlying development of primary atopic diseases have recently been proposed. We test this classification through reviewing novel genes reported in the last 2 years and compare insights from pathway-analysis of genome-wide association studies (GWAS) of atopic-related traits.Growing access to next-generation sequencing (NGS) has resulted in a surge in gene discovery, highlighting the utility and some pitfalls of this approach in clinical practice. The variability of presenting phenotypes reveals important gene-dosage effects. This has important implications for therapeutic strategies such as protein stabilization and modulators of JAK-STAT or TH2-cytokine signalling. We also consider the therapeutic implications raised by CARD11 deficiency, and wider applications of NGS including polygenic risk score in atopy. SUMMARY: Disorders presenting at the interface between PID and allergy are often difficult to diagnose, with serious consequences if missed. Application of NGS has already provided critical insights to pathways enabling targeted therapeutic interventions, and potential wider translation to polygenic disorders.
PROBLEM: Enhanced TH2 activity is characteristic for atopic diseases and is observed also in physiological pregnancy. The immune causes of repeated pregnancy losses and/or repeated in vitro fertilization failure may be associated with TH2 hypoactivity. The association with frequency of atopic diseases is unclear. METHOD OF STUDY: Intracellular production of IL-4 and IFN-gamma by peripheral CD4+ T lymphocytes was studied, as well as serum levels of total and allergen specific IgE. Simultaneously skin prick tests with inhalant allergens were performed, and clinical features of atopy were registered by means of a questionnaire. RESULTS: Lower intracellular production of IL-4 by peripheral CD4+ T cells and lower frequency of elevated total and allergen specific IgE were found in women with reproduction failure compared to controls, as well as lower frequency of some symptoms possibly associated with atopy. CONCLUSION: Our study showed the presence of TH2 hypoactivity in women with reproduction failure, which may be associated with lower occurrence of atopic diseases.
- MeSH
- alergeny imunologie MeSH
- časná přecitlivělost epidemiologie imunologie MeSH
- CD4-pozitivní T-lymfocyty imunologie metabolismus MeSH
- dospělí MeSH
- fertilizace in vitro MeSH
- habituální potrat imunologie MeSH
- imunoglobulin E krev MeSH
- interferon gama biosyntéza imunologie MeSH
- interleukin-4 biosyntéza imunologie MeSH
- kožní testy MeSH
- leukocyty mononukleární imunologie metabolismus MeSH
- lidé MeSH
- průzkumy a dotazníky MeSH
- Th1 buňky imunologie metabolismus MeSH
- Th2 buňky imunologie metabolismus MeSH
- ženská infertilita imunologie MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- alergeny MeSH
- imunoglobulin E MeSH
- interferon gama MeSH
- interleukin-4 MeSH
Atopic eczema/dermatitis syndrome (AEDS) is one of the most common chronic allergic diseases in children. Among the allergens found to be relevant in AEDS, aeroallergens and food allergens are the most important. The exposure of these patients to their relevant protein allergens can trigger an exacerbation or maintain the disease. AEDS is frequently associated with food allergy, which complicates the management in approximately 40% of these children. Atopy patch test (APT) can help in detecting food allergies in children with AEDS. The earliest publication on patch testing in eczema was described in 1937 by Rostenberg, but the first controlled clinical trial was provided by Mitchell in 1982. APT with food allergens were introduced into clinical use in 1996 by the group of Isolauri. APT test is performed epicutaneously with typical immediate-type allergens (aeroallergens or foods). As a number of apparently minor test modifications greatly influence the sensitivity, specificity, and reproducibility of the APT, the European Task Force on Atopic Dermatitis (ETFAD) has developed a standardized APT technique. APT has developed into a valuable additional tool in the diagnostic work-up of food allergy in infants and children with atopic dermatitis.
- MeSH
- atopická dermatitida diagnóza etiologie MeSH
- dítě MeSH
- lidé MeSH
- náplasťové testy * MeSH
- potravinová alergie komplikace diagnóza MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
UNLABELLED: Few studies concerning the importance of food allergy in adolescents and adult patients with atopic eczema exist. The atopy patch tests with food have mostly been studied in infants and children since food allergy plays a role especially in this age group. AIM: The evaluation of the contribution of atopy patch tests in the diagnostic work-up of food allergy (to wheat, cow milk, peanuts, soya and eggs) in the patients with atopic eczema older than 14 years of age. METHOD: 120 patients were examined in the study in the diagnostic work-up of food allergy--86 women and 34 men, the mean age 26.5 (s.d. 9.8) and the median SCORAD at the beginning of the study 32.9 (s.d. 14.0). Complete dermatological and allergological examinations in the diagnostic work-up of food allergy were performed (assessment of personal history, assessment of serum specific IgE, skin prick tests, atopy patch tests, diagnostic hypoallergenic diet, food challenge tests with egg, soy, wheat, cow milk and double-blind, placebo-controlled food challenge test with cow milk and wheat. The results of atopy patch tests were compared with the results of other diagnostic methods in the diagnosis of food allergy. RESULTS: The food allergy to cow milk and wheat was confirmed in double-blind, placebo controlled food challenge test in few patients in our study (4%). The suspicion of food allergy to egg is in 8 %, to peanuts in 13 % and to soya in 4 % of patients in our study. The assessment of atopy patch tests response seems to be of great importance. The reaction in atopy patch tests with more papules has the greatest diagnostic accuracy for predicting the result of challenge tests. At the beginning and at the end of diagnostic hypoallergenic diet the severity of atopic eczema/dermatitis syndrome was recorded in all patients enrolled in the study by evaluating SCORAD. The decrease of SCORAD was statistically important. CONCLUSION: Atopy patch tests alone cannot be used as a single test for the determination of food allergy in patients with atopic eczema/dermatitis syndrome but such a test, together with other diagnostic methods, can help to trace the food allergy.
- MeSH
- atopická dermatitida etiologie MeSH
- dospělí MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- náplasťové testy * MeSH
- potravinová alergie komplikace diagnóza MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
The author presents an account on initial experience with 0.1% lodoxamide in the treatment of atopy of the eyes. A positive effect was found in vernal catarrh. A favourable result was recorded in two sub-types of seasonal allergic conjunctivitis, mostly in the lower tarsal form with a follicular reaction in children and in purely limbal irritation in adults. The good effect in these two atypical forms of seasonal allergic conjunctivitis as a purely preventive immunopharmaceutical drug during the pollen season was remarkable.
- MeSH
- alergická konjunktivitida farmakoterapie MeSH
- antagonisté histaminu H1 terapeutické užití MeSH
- dospělí MeSH
- kyselina oxamová analogy a deriváty terapeutické užití MeSH
- lidé MeSH
- nitrily MeSH
- předškolní dítě MeSH
- tromethamin analogy a deriváty terapeutické užití MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- předškolní dítě MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
- Názvy látek
- antagonisté histaminu H1 MeSH
- kyselina oxamová MeSH
- lodoxamide tromethamine MeSH Prohlížeč
- nitrily MeSH
- tromethamin MeSH
Vernal catharr of the conjunctivae is frequently the initial symptom of dermorespiratory syndrome. In all nine children where ophthalmological and other manifestations of varying extent of general atopy were combined, the authors revealed a marked increase of immunoglobulin IgE 220-2230 I.U./ml (normal values up to 150 I.U./ml) and polyvalent allergy. In the treatment of vernal catharr the authors used a combination of antihistaminics and preventive immunopharmaceutical preparations administered locally (Spersallerg and Opticrom) or as general medication (Hismanal and Zaditen), supplemented by aimed hyposensitization. In acute stages of the inflammation of the eye the authors administered Triamcinolon into the upper transient conjunctival fold. In the treatment of secondary infection Garasone was most effective. A finding interesting from the immunological aspect was vernal catharr without general symptoms of atopy in a patient with hypogammaglobulinaemia IgA.
- MeSH
- alergická konjunktivitida patologie terapie MeSH
- dítě MeSH
- lidé MeSH
- předškolní dítě MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
