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Effects of Food Processing on Allergenicity.

Curr Allergy Asthma Rep

January 2025

Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.

Purpose Of Review: There is an increasing awareness among clinicians that industrial and household food processing methods can increase or decrease the allergenicity of foods. Modification to allergen properties through processing can enable dietary liberations. Reduced allergenicity may also allow for lower risk immunotherapy approaches.

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Allergic Reactivity and Memory Occur Independently of Sequential Switching Through IgG1.

Allergy

January 2025

Schroeder Allergy and Immunology Research Institute, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Canada.

Allergic reactions to foods are primarily driven by allergen-binding immunoglobulin (Ig)E antibodies. IgE-expressing cells can be generated through direct switching from IgM to IgE or a sequential class switching pathway where activated B cells first switch to an intermediary isotype, most frequently IgG1, and then to IgE. It has been proposed that sequential class switch recombination is involved in augmenting the severity of allergic reactions, generating high affinity IgE, differentiation of IgE plasma cells, and in holding the memory of IgE responses.

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Objective: This study aimed to evaluate the safety and efficacy of vacuum-induced intrauterine balloon tamponade (vIBT) using the modified Bakri system in a clinical setting.

Materials And Methods: This single-center observational study included women who had undergone vIBT for primary postpartum hemorrhage (PPH). Vacuum induction at 60 kPa in the uterus was continued for 1 h with 50-100 ml saline, and the balloon was promptly removed after the protocol was completed.

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Anaphylaxis, the most severe end of the spectrum of allergic reactions, has shown increasing incidence globally over recent years. This hypersensitivity reaction can occur at any age, including infancy. Recent data, although scarce, show that anaphylaxis is increasingly reported in infancy, with food identified as the leading cause of anaphylaxis cases in this age group.

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Background: Hymenoptera venom allergy is a potentially severe allergic reaction in the general population. The only preventative approach in these cases is venom immunotherapy (VIT), which follows different protocols. The recommended initial dose is 0.

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