Abstract
Studies were performed in animals to establish whether antigen prefeeding could present homocytotropic antibody synthesis and the induction of gastric ulcer resulting from mucosal anaphylaxis. A single digestive exposure to 1 or 10 mg ovalbumin induced a state of specific immunologic tolerance. Inhibition of the formation of specific reagins was shown by the study of mast cell degranulation. Tolerant animals presented a reduced incidence of gastric ulcer after subsequent mucosal challenge. These results are important for the development of methods of prevention and treatment of allergic diseases.
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