{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T00:43:44Z","timestamp":1774572224588,"version":"3.50.1"},"reference-count":50,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2021,10,22]],"date-time":"2021-10-22T00:00:00Z","timestamp":1634860800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Allergy"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Allergic asthma (AA) and allergic rhinoconjunctivitis (ARC) are common comorbid environmentally triggered diseases. We hypothesized that severe AA\/ARC reflects a maladaptive or unrestrained response to ubiquitous aeroallergens.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We performed provocation studies wherein six separate cohorts of persons (total <jats:italic>n<\/jats:italic>\u00a0=\u00a0217) with ARC, with or without AA, were challenged once or more with fixed concentrations of seasonal or perennial aeroallergens in an aeroallergen challenge chamber (ACC).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Aeroallergen challenges elicited fully or partially restrained vs. unrestrained evoked symptom responsiveness, corresponding to the resilient and adaptive vs. maladaptive AA\/ARC phenotypes, respectively. The maladaptive phenotype was evoked more commonly during challenge with a non\u2010endemic versus endemic seasonal aeroallergen. In an AA cohort, symptom responses evoked after house dust mite (HDM) challenges vs. recorded in the natural environment were more accurate and precise predictors of asthma severity and control, lung function (FEV1), and mechanistic correlates of maladaptation. Correlates included elevated levels of peripheral blood CD4+ and CD8+ T\u2010cells, eosinophils, and T\u2010cell activation, as well as gene expression proxies for ineffectual epithelial injury\/repair responses. Evoked symptom severity after HDM challenge appeared to be more closely related to levels of CD4+ and CD8+ T\u2010cells than eosinophils, neutrophils, or HDM\u2010specific IgE.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Provocation studies support the concept that resilience, adaptation, and maladaptation to environmental disease triggers calibrate AA\/ARC severity. Despite the ubiquity of aeroallergens, in response to these disease triggers in controlled settings (ie, ACC), most atopic persons manifest the resilient or adaptive phenotype. Thus, ARC\/AA disease progression may reflect the failure to preserve the resilient or adaptive phenotype. The triangulation of CD8+ T\u2010cell activation, airway epithelial injury\/repair processes and maladaptation in mediating AA disease severity needs more investigation.<\/jats:p><\/jats:sec>","DOI":"10.1111\/all.15124","type":"journal-article","created":{"date-parts":[[2021,10,6]],"date-time":"2021-10-06T14:01:41Z","timestamp":1633528901000},"page":"1797-1814","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Large\u2010scale provocation studies identify maladaptive responses to ubiquitous aeroallergens as a correlate of severe allergic rhinoconjunctivitis and asthma"],"prefix":"10.1111","volume":"77","author":[{"given":"Alisha M.","family":"Smith","sequence":"first","affiliation":[{"name":"Veterans Administration Center for Personalized Medicine South Texas Veterans Health Care System  San Antonio Texas USA"},{"name":"Foundation for Advancing Veterans' Health Research South Texas Veterans Health Care System  San 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