Effects of hazelnut protein isolate-induced food allergy on the gut microenvironment in a BALB/c mouse model
Hazelnuts are reported as among the nuts that cause severe allergic reactions. However, few systematic studies exist on the changes in the gut microenvironment following hazelnut allergy. This study focused on the effects of hazelnut allergy on the duodenum, jejunum, ileum and colon microenvironment in vivo. We established a hazelnut protein isolate (HPI)-allergic mouse model, […]
Longitudinal dynamics of the gut microbiome and metabolome in peanut allergy development
Background: Rising rates of peanut allergy motivate investigations of its development to inform prevention and therapy. Microbiota and the metabolites they produce shape food allergy risk. Objective: To gain insight into gut microbiome and metabolome dynamics in the development of peanut allergy. Methods: We performed a longitudinal, integrative study of the gut microbiome and metabolome […]
Peanut allergy: risk factors, immune mechanisms, and best practices for oral immunotherapy success
Introduction: Peanut oral immunotherapy (pOIT) is the only FDA-approved treatment for food allergy and its adoption amongst allergist immunologists and their patients is growing. pOIT is the subject of numerous clinical trials, however, the focus is often on treatment efficacy, safety, and tolerability, rather than identifying patients most likely to benefit from pOIT. Here, we […]
Food-Induced Anaphylaxis: Data From the European Anaphylaxis Registry
Background: Food is one of the most common elicitors of anaphylaxis, with an increasing incidence over recent years. Objectives: To characterize elicitor-specific phenotypes and identify factors enhancing the risk or severity of food-induced anaphylaxis (FIA). Methods: We analyzed data from the European Anaphylaxis Registry applying an age- and sex-matched analysis of associations (Cramer’s V) for single food triggers […]
Interaction of mediators and effector cells in cashew nut-induced anaphylaxis
Background: The underlying mechanisms of an immediate food-induced allergic reaction involve mast-cell degranulation and recruitment of other effector cells, such as lymphocytes, eosinophils, and basophils. How the interaction of various mediators and cells results in anaphylaxis is not fully understood. Objective: To evaluate changes in platelet-activating factor (PAF), platelet-activating factor acetylhydrolase (PAF-AH), tryptase, eosinophils, basophils, […]
Phase 3 Trial of Epicutaneous Immunotherapy in Toddlers with Peanut Allergy
Background: No approved treatment for peanut allergy exists for children younger than 4 years of age, and the efficacy and safety of epicutaneous immunotherapy with a peanut patch in toddlers with peanut allergy are unknown. Methods: We conducted this phase 3, multicenter, double-blind, randomized, placebo-controlled trial involving children 1 to 3 years of age with peanut allergy […]
Use of a Liver-Targeting Immune-Tolerogenic mRNA Lipid Nanoparticle Platform to Treat Peanut-Induced Anaphylaxis by Single- and Multiple-Epitope Nucleotide Sequence Delivery
While oral desensitization is capable of alleviating peanut allergen anaphylaxis, long-term immune tolerance is the sought-after goal. We developed a liver-targeting lipid nanoparticle (LNP) platform to deliver mRNA-encoded peanut allergen epitopes to liver sinusoidal endothelial cells (LSECs), which function as robust tolerogenic antigen-presenting cells that induce FoxP3+ regulatory T-cells (Tregs). The mRNA strand was constructed by […]
The protective effect of moderate maternal peanut consumption on peanut sensitization and allergy
Background: The Learning Early About Peanut Allergy or LEAP trial found that the early introduction of peanuts in the diet of infants at risk for peanut allergies prevents peanut allergy. The effect of maternal consumption of peanuts on subsequent peanut sensitization or peanut allergy in the LEAP trial has not been studied to date. Objective: To determine […]
Expression, purification, characterization, and patient IgE reactivity of new macadamia nut iso-allergen.
Structural and functional information about food allergens is essential for understanding the allergenicity of food proteins. All allergens belong to a small number of protein families. Various allergens from different families have been successfully produced recombinantly in E. coli for their characterization and applications in allergy diagnosis and treatment. However, recombinant hexameric 11S seed storage […]
Cross-Serological Reaction of Glandless Cottonseed Proteins to Peanut and Tree Nut Allergic IgE.
Food allergy is a potentially life-threatening health concern caused by immunoglobulin E (IgE) antibodies that mistakenly recognize normally harmless food proteins as threats. Peanuts and tree nuts contain several seed storage proteins that commonly act as allergens. Glandless cottonseed, lacking the toxic compound gossypol, is a new food source. However, the seed storage proteins in […]