21. Mainzer Allergie-Workshop

“Default” versus “pre-atopic” IgG responses to foodborne and airborne pathogenesis-related group 10 protein molecules in birch-sensitized and nonatopic children

Background The route and dose of exposure are believed to be relevant factors in the sensitization process. Pathogenesis-related group 10 protein (PR-10) molecules are a family of allergenic proteins shared by many pollens (eg, birch and alder) and foods (eg, apple, peach, and soy). Children are exposed to both pollen-derived (inhaled) and food-derived (ingested) PR-10 molecules. Objective We sought to investigate the role of route and dose of exposure in the evolution of IgG and IgE responses to recombinant PR-10 molecules. Methods The German Multicentre Allergy Study examined a birth cohort born in 1990. Blood samples were collected at the ages of 1, 2, 3, 5, 6, 7, 10, and 13 years. Parti…

Parental hay fever reinforces IgE to pollen as pre-clinical biomarker of hay fever in childhood

An early IgE response to grass or birch pollen can anticipate seasonal allergic rhinitis to pollen later in life or remain clinically silent.To identify risk factors early in life that allow discriminating pathogenic from non-pathogenic IgE responses and contribute to the development of seasonal allergic rhinitis to grass pollen.The German Multicentre Allergy Study examined a birth cohort born in 1990. A questionnaire was yearly administered and blood samples collected at age 1,2,3,5,6,7,10,13 yr. The definition of the primary outcome grass- and birch-pollen-related seasonal allergic rhinitis (SARg, SARb) was based on nasal symptoms in June/July and April, respectively. Serum IgE antibodies…