Food allergy appears to have risen rapidly in prevalence over the past few decades, leading to much research into the causes of this apparent 'epidemic'. Yet, because the data showing increased prevalence are largely based on questionnaires, and we know that questionnaires overestimate clinically confirmed food allergy, we truly do not know how real the apparent epidemic is. It is possible that the increased prevalence seen in the questionnaires represents changes in the diagnosis of food allergy, and that biologic markers of this disease remain unchanged. An additional unknown is whether the growing ethnic/racial disparities in food allergy prevalence seen in the self-reported data relate to true biologic differences. In order to determine whether the trends that are found in self reported food allergy correlate with changes in biologic measures of food allergy, we propose to measure food specific IgE in stored samples from the National Health and Nutrition Examination Survey (NHANES) III, collected from 1988-1994, in order to compare it to that already measured in NHANES 2005-6.
Aim 1 is to compare the prevalence of sensitization and higher likelihood of clinical food allergy, both as measured by specific IgE to milk, egg, peanut or shrimp, in U.S. children over this approximately 15 year period.
Aim 2 is to test the hypothesis that Non-Hispanic Blacks have experienced greater increases in prevalence of sensitization and higher specific IgE over this period. Combined, these aims will answer fundamental questions in the field of food allergy epidemiology.
This proposal is to measure food specific IgE in the surplus sera from a nationally representative survey from obtained from 1988-1994, in order to compare it to specific IgE from a later survey. This will allow us to determine whether the increase in sel-report of food allergy seen in other surveys is associated with changes in a biologic marker of IgE.
|Keet, Corinne A; Keller, Joshua P; Peng, Roger D (2018) Long-Term Coarse Particulate Matter Exposure Is Associated with Asthma among Children in Medicaid. Am J Respir Crit Care Med 197:737-746|
|Keet, Corinne A; Matsui, Elizabeth C; McCormack, Meredith C et al. (2017) Urban residence, neighborhood poverty, race/ethnicity, and asthma morbidity among children on Medicaid. J Allergy Clin Immunol 140:822-827|
|Hughes, Helen K; Matsui, Elizabeth C; Tschudy, Megan M et al. (2017) Pediatric Asthma Health Disparities: Race, Hardship, Housing, and Asthma in a National Survey. Acad Pediatr 17:127-134|
|Matsui, Elizabeth C; Keet, Corinne A (2017) Weighing the evidence: Bias and confounding in epidemiologic studies in allergy/immunology. J Allergy Clin Immunol 139:448-450|
|McGowan, Emily C; Matsui, Elizabeth C; Peng, Roger et al. (2016) Racial/ethnic and socioeconomic differences in self-reported food allergy among food-sensitized children in National Health and Nutrition Examination Survey III. Ann Allergy Asthma Immunol 117:570-572.e3|
|McGowan, Emily C; Peng, Roger D; Salo, Päivi M et al. (2016) Changes in Food-Specific IgE Over Time in the National Health and Nutrition Examination Survey (NHANES). J Allergy Clin Immunol Pract 4:713-20|
|McGowan, Emily C; Matsui, Elizabeth C; McCormack, Meredith C et al. (2015) Effect of poverty, urbanization, and race/ethnicity on perceived food allergy in the United States. Ann Allergy Asthma Immunol 115:85-6.e2|
|Keet, Corinne A; McCormack, Meredith C; Pollack, Craig E et al. (2015) Neighborhood poverty, urban residence, race/ethnicity, and asthma: Rethinking the inner-city asthma epidemic. J Allergy Clin Immunol 135:655-62|