[Recognition of excretory/secretory antigens of Anisakis type I and evolution of IgE in experimentally infected rats]. / Reconocimiento de los antígenos excretores/secretores de Anisakis tipo I y evolución de la IgE en ratas infectadas experimentalmente.

INTRODUCTION: Anisakis spp., during parasitism, release excretory-secretory antigens that, in contact with the human immune system, can trigger a hypersensitivity response mediated by IgE, causing various allergic symptoms. OBJECTIVES: To evaluate the IgE response in Wistar rats after infection with L3 larvae of the parasite Anisakis spp. METHODS: Some determining factors involved in the technique have been improved in this work, such as: the concentration of polyacrylamide used in the preparation of the gels, the antigen concentration used, and the temperature required for denaturation of proteins. RESULTS: Immune responses (Ag-Ab) observed by the immunoblotting technique showed a greater intensity with serum obtained after reinfection, which have recognized proteins that may correspond to the major antigen Ani s 1 and other polypeptides of interest in the diagnosis of human anisakiasis. CONCLUSION: This paper concludes that immunoblotting is a useful technique to detect IgE antibodies against Anisakis proteins.