Maternal supplementation with α-tocopherol inhibits the development of offspring food allergy, H1R signaling and ultimately anaphylaxis early in life.

IF 3.6 3区 医学 Q2 IMMUNOLOGY
Allison E Kosins, Haoran Gao, Ross L Blankenship, Lauren N Emmerson, Joel A Ochoa, Joan M Cook-Mills
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引用次数: 0

Abstract

Food allergy has had a rapid rise in prevalence, and thus it is important to identify approaches to limit the development of food allergy early in life. Because maternal dietary supplementation with α-tocopherol (α-T), an isoform of vitamin E, during pregnancy and nursing increases neonate plasma levels of α-T and can limit neonate development of other allergies, we hypothesized that α-T can limit development of food allergy. To assess this, male mice with mutations in their skin barrier genes (FT-/- mice) were mated with wild-type females that received a diet supplemented with α-tocopherol or a control diet. Starting at postnatal day 3, these FT+/- pups were sensitized 4 to 5 times over 2.5 weeks by skin co-exposure to the food allergen peanut extract (PNE) and the environmental allergen Alternaria alternata (Alt). Control pups were exposed to saline, PNE only or Alt only. Supplementation with α-T blocked Alt+PNE sensitization (anti-PNE-specific IgE), without blocking Alt+PNE-stimulated skin IL33, Areg, OSM, CCL11, TSLP or plasma MCPT1. However, supplementation with α-T blocked mast cell activation, the increase in plasma histamine in Alt+PNE sensitized pups, histamine receptor stimulation of endothelial PKCα signaling, and ultimately oral PNE-induced anaphylaxis in Alt+PNE sensitized mice. Thus, maternal supplementation with α-tocopherol reduced development of food allergy and anaphylaxis in neonates. These results have implications for supplementation of mothers with α-tocopherol to limit development of food allergy in neonates with skin barrier mutations.

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来源期刊
Journal of immunology
Journal of immunology 医学-免疫学
CiteScore
8.20
自引率
2.30%
发文量
495
审稿时长
1 months
期刊介绍: The JI publishes novel, peer-reviewed findings in all areas of experimental immunology, including innate and adaptive immunity, inflammation, host defense, clinical immunology, autoimmunity and more. Special sections include Cutting Edge articles, Brief Reviews and Pillars of Immunology. The JI is published by The American Association of Immunologists (AAI)
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