Allergen‐specific IgE as a biomarker of exposure plus sensitization in inner‐city adolescents with asthma
Year: 2010
Type: article
Abstract: To cite this article: Matsui EC, Sampson HA, Bahnson HT, Gruchalla RS, Pongracic JA, Teach SJ, Gergen PJ, Bloomberg GR, Chmiel JF, Liu AH, Kattan M, Sorkness CA, Steinbach SF, Story RE, Visness CM, on behalf of the Inner‐city Asthma Consortium. Allergen‐specific IgE as a biomarker of exposure plus sensitization in inner‐city adolescents with asthma. Allergy 2010; 65: 1414–1422. Abstract Background: Relationships among allergen‐specific IgE levels, allergen exposure and asthma severity are poorly understood since sensitization has previously been evaluated as a dichotomous, rather than continuous characteristic. Methods: Five hundred and forty‐six inner‐city adolescents enrolled in the Asthma Control Evaluation study underwent exhaled nitric oxide (FENO) measurement, lung function testing, and completion of a questionnaire. Allergen‐specific IgE levels and blood eosinophils were quantified. Dust samples were collected from the participants’ bedrooms for quantification of allergen concentrations. Participants were followed for 12 months and clinical outcomes were tracked. Results: Among sensitized participants, allergen‐specific IgE levels were correlated with the corresponding settled dust allergen levels for cockroach, dust mite, and mouse (r = 0.38, 0.34, 0.19, respectively; P < 0.0001 for cockroach and dust mite and P = 0.03 for mouse), but not cat (r = −0.02, P = 0.71). Higher cockroach‐, mite‐, mouse‐, and cat‐specific IgE levels were associated with higher FENO concentrations, poorer lung function, and higher blood eosinophils. Higher cat, dust mite, and mouse allergen‐specific IgE levels were also associated with an increasing risk of exacerbations or hospitalization. Conclusions: Allergen‐specific IgE levels were correlated with allergen exposure among sensitized participants, except for cat. Allergen‐specific IgE levels were also associated with more severe asthma across a range of clinical and biologic markers. Adjusting for exposure did not provide additional predictive value, suggesting that higher allergen‐specific IgE levels may be indicative of both higher exposure and a greater degree of sensitization, which in turn may result in greater asthma severity.
Source: Allergy
Institutions: Johns Hopkins University, Icahn School of Medicine at Mount Sinai, Rho (United States), The University of Texas Southwestern Medical Center, Lurie Children's Hospital, Children's National, National Institutes of Health, Washington University in St. Louis, Rainbow Babies & Children's Hospital, National Jewish Health, University of Colorado Denver, Columbia University, University of Wisconsin–Madison, Boston University
Language: English
Subfield: Physiology
Field: Medicine
Domain: Health Sciences
Open Access status: green
Awards: Statistical and Clinical Coordinating Center for Immunologic Approaches to Reduce Asthma in Children, G1702152793, G1830311252, G1843845992, G3507050984, G373348672, General Clinical Research Center, G4115395081, G413336477, General Clinical Research Center, G4239343409, General Clinical Research Center, General Clinical Research Center, INNER-CITY ASTHMA CONSORTIUM, G613702325, G621190145, G627775621
OpenAlex ID: W1570938778