RT Journal Article T1 Changes in IgE sensitization and total IgE levels over 20 years of follow-up. A1 Amaral, André F S A1 Newson, Roger B A1 Abramson, Michael J A1 Antó, Josep M A1 Bono, Roberto A1 Corsico, Angelo G A1 de Marco, Roberto A1 Demoly, Pascal A1 Forsberg, Bertil A1 Gislason, Thorarinn A1 Heinrich, Joachim A1 Huerta, Ismael A1 Janson, Christer A1 Jõgi, Rain A1 Kim, Jeong-Lim A1 Maldonado, José A1 Martinez-Moratalla Rovira, Jesús A1 Neukirch, Catherine A1 Nowak, Dennis A1 Pin, Isabelle A1 Probst-Hensch, Nicole A1 Raherison-Semjen, Chantal A1 Svanes, Cecilie A1 Urrutia Landa, Isabel A1 van Ree, Ronald A1 Versteeg, Serge A A1 Weyler, Joost A1 Zock, Jan-Paul A1 Burney, Peter G J A1 Jarvis, Deborah L K1 Allergens K1 IgE K1 aging K1 cohort study K1 epidemiology K1 immunosenescence K1 longitudinal analysis K1 sensitization AB 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. 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. 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. 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. Aging was associated with lower levels of sensitization, especially to house dust mite and cat, after the age of 20 years. YR 2015 FD 2015-11-14 LK http://hdl.handle.net/10668/9625 UL http://hdl.handle.net/10668/9625 LA en DS RISalud RD Apr 6, 2025