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- Amaral, A. F. S., et al.
(författare)
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Changes in IgE sensitization and total IgE levels over 20 years of follow-up
- 2016
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Ingår i: Journal of Allergy and Clinical Immunology. - : Elsevier BV. - 0091-6749 .- 1097-6825. ; 137:6
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Tidskriftsartikel (refereegranskat)abstract
- Background Cross-sectional studies have reported a lower prevalence of sensitization in older adults, but few longitudinal studies have examined whether this is an aging or a year-of-birth cohort effect. Objective We sought to assess changes in sensitization and total IgE levels in a cohort of European adults as they aged over a 20-year period. Methods Levels of serum specific IgE to common aeroallergens (house dust mite, cat, and grass) and total IgE levels were measured in 3206 adults from 25 centers in the European Community Respiratory Health Survey on 3 occasions over 20 years. Changes in sensitization and total IgE levels were analyzed by using regression analysis corrected for potential differences in laboratory equipment and by using inverse sampling probability weights to account for nonresponse. Results Over the 20-year follow-up, the prevalence of sensitization to at least 1 of the 3 allergens decreased from 29.4% to 24.8% (-4.6%; 95% CI, -7.0% to -2.1%). The prevalence of sensitization to house dust mite (-4.3%; 95% CI, -6.0% to -2.6%) and cat (-2.1%; 95% CI, -3.6% to -0.7%) decreased more than sensitization to grass (-0.6%; 95% CI, -2.5% to 1.3%). Age-specific prevalence of sensitization to house dust mite and cat did not differ between year-of-birth cohorts, but sensitization to grass was most prevalent in the most recent ones. Overall, total IgE levels decreased significantly (geometric mean ratio, 0.63; 95% CI, 0.58-0.68) at all ages in all year-of-birth cohorts. Conclusion Aging was associated with lower levels of sensitization, especially to house dust mite and cat, after the age of 20 years. © 2015 The Authors. Published by Elsevier, Inc. on behalf ofthe American Academy of Allergy, Asthma&Immunology. This is an open access article under the CC BY license.
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- Lam, Holly C. Y., et al.
(författare)
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Food hypersensitivity : an examination of factors influencing symptoms and temporal changes in the prevalence of sensitization in an adult sample
- 2023
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Ingår i: European Journal of Clinical Nutrition. - : Springer Nature. - 0954-3007 .- 1476-5640. ; 77:8, s. 833-840
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Tidskriftsartikel (refereegranskat)abstract
- Background/ObjectivesFood hypersensitivity (FHS) is common, but little is known about the factors associated with severe reactions, age of onset and whether sensitization persists. This study examines the factors associated with self-reported severe food reactions, onset age and the changes in prevalence of sensitization to foods over time in an adult sample.Subjects/MethodsWe used data from adults taking part in the European Community Respiratory Health Survey (ECRHS) III (2010-2014) who provided information on food hypersensitivity, including symptoms, suspected culprit food and onset age (n = 4865). A subsample from six countries had serum food-specific IgE tested for 25 core foods and also in 10 years earlier (ECRHS II). We applied logistic regression and McNemar's test for analyses.ResultsThe prevalence of self-reported FHS was 13.5% at ECRHS III. Of those providing information on symptoms (n = 611), 26.4% reported severe reactions. About 80% of 1033 reported food-specific reactions (reported by 596 participants) began after age 15. History of asthma (odds ratio OR 2.12 95% confidence interval CI 1.13-3.44) and a younger age of onset of FHS (OR 1.02, 95% CI 1.01-1.03, per year) were associated with higher risks of a lifetime experience of severe food reactions. In the subsample with IgE tested in both surveys (n = 1612), the overall prevalence of sensitization to foods did not change over 10 years.ConclusionOur findings support previous observations of more severe food reactions in people with asthma and that most FHS reported by this sample started after age 15. We found no evidence of changes in the prevalence of sensitization to food in adults followed for 10 years.
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- Bousquet, Philippe-Jean, et al.
(författare)
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Geographical distribution of atopic rhinitis in the European Community Respiratory Health Survey I
- 2008
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Ingår i: Allergy. European Journal of Allergy and Clinical Immunology. - : Wiley. - 0105-4538 .- 1398-9995. ; 63:10, s. 1301-1309
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: No large studies in adults has examined geographical variation in the prevalence of nasal allergy/allergic rhinitis in adults or considered the proportion of reported nasal symptoms on exposure to allergen attributable to atopy. The aim of this report was to describe the geographic distribution of subjects with nasal symptoms who are sensitized as determined by skin prick tests, using data from the European Community Respiratory Health Survey I. METHODS: Information on the presence of nasal allergy, nasal symptoms on exposure to allergen and atopy using skin prick tests was collected from 15,394 adults aged 20-44 years living in 35 centres in 15 countries. Age sex standardized prevalence of symptoms and the attributable fraction of IgE sensitization for nasal symptoms on exposure to allergen were determined. RESULTS: The age-sex standardized prevalence of nasal allergy ranged from 11.8% in Oviedo (Spain) to 46.0% in Melbourne (Australia). The prevalence of atopic nasal allergy ranged from 4.6% in Oviedo to 31.8% in Melbourne (analysis limited on 12,566 subjects). The median attributable fraction for atopy on nasal symptoms on exposure ranged between 12.8% and 65.9% (median 27.2%). CONCLUSION: In the general population there is a wide variation in the prevalence of nasal allergy in young adults. Many subjects complaining from nasal symptoms on exposure to allergen are not atopic.
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