ABSTRACT
Cross reactivity describes the development of symptoms as a consequence of the presence of specific IgE to a protein without the subject having had previous contact with that protein. Cross-reactivity depends on factors such as the individual's immune response, the type and intensity of exposure and, above all, the type of allergen. The identification of pan-allergens, which are present in various animal and vegetable sources and which show great structural and sequential similarity, even among species with little taxonomic relation, explains the existence of distinct, well-defined cross-reactivity syndromes. Knowledge of these phenomena could have important diagnostic and therapeutic consequences.
Subject(s)
Allergens/immunology , Cross Reactions , Allergens/adverse effects , Animals , Antibody Specificity , Birds , Eggs/adverse effects , Food Hypersensitivity/etiology , Food Hypersensitivity/immunology , Fruit/adverse effects , Fruit/immunology , Humans , Hypersensitivity/etiology , Hypersensitivity/immunology , Immunoglobulin E/immunology , Latex Hypersensitivity/etiology , Latex Hypersensitivity/immunology , Models, Immunological , Pollen/adverse effects , Pollen/immunology , Vegetables/adverse effects , Vegetables/immunologyABSTRACT
La Reactividad Cruzada (RC) expresa el desarrollo de síntomas como consecuencia de la presencia de IgE específica frente a una fuente proteica sin que haya existido contacto previo con la misma. La RC depende de factores como la respuesta inmune del individuo, del tipo e intensidad de la exposición y, sobre todo, de la naturaleza del alergeno. En este sentido, la identificación de Pan-alergenos, presentes en diferentes fuentes de origen animal y vegetal, compartiendo una gran similitud estructural y secuencial, incluso entre especies taxonómicamente muy poco relacionadas, explica la existencia de diferentes síndromes de RC bien definidos. El conocimiento de estos hechos puede tener importantes consecuencias de tipo diagnóstico y terapéutico (AU)
Cross reactivity describes the development of symptoms as a consequence of the presence of specific IgE to a protein without the subject having had previous contact with that protein. Cross-reactivity depends on factors such as the individual's immune response, the type and intensity of exposure and, above all, the type of allergen. The identification of pan-allergens, which are present in various animal and vegetable sources and which show great structural and sequential similarity, even among species with little taxonomic relation, explains the existence of distinct, well-defined cross-reactivity syndromes. Knowledge of these phenomena could have important diagnostic and therapeutic consequences (AU)