Article ; Online: Non-IgE-mediated anaphylaxis.
The Journal of allergy and clinical immunology
2021 Volume 147, Issue 4, Page(s) 1123–1131
Abstract: Anaphylaxis is a rapidly evolving, acute, life-threatening reaction that occurs rapidly on contact with a trigger. Anaphylaxis is classically defined as an allergen-driven process that induces specific IgE and the activation of mast cells and basophils ... ...
Abstract | Anaphylaxis is a rapidly evolving, acute, life-threatening reaction that occurs rapidly on contact with a trigger. Anaphylaxis is classically defined as an allergen-driven process that induces specific IgE and the activation of mast cells and basophils through the cross-linking of IgE receptors. However, it is clear that non-IgE-mediated pathways can induce symptoms indistinguishable from those of classic anaphylaxis, and their activation could explain the severity of IgE-mediated anaphylaxis. Indeed, mast cells and basophils can be activated by antibodies against IgE or their receptors, by molecules such as anaphylatoxins, or through G-coupled receptors. Some other allergens can induce antibodies of class IgG that can activate neutrophils to produce a molecule similar to histamine to induce anaphylaxis. Finally, some inflammatory mediators such as bradykinin or prostaglandin can also modulate mast cell and basophil activation as well as directly cause vasodilation and bronchoconstriction, resulting in anaphylaxis-like reactions. |
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MeSH term(s) | Allergens/immunology ; Anaphylatoxins/metabolism ; Anaphylaxis/immunology ; Animals ; Basophils/immunology ; Bronchoconstriction ; Cell Degranulation ; Histamine/metabolism ; Humans ; Hypersensitivity/immunology ; Immunoglobulin E/immunology ; Immunoglobulin E/metabolism ; Mast Cells/immunology ; Neutrophils/immunology ; Receptors, IgE/immunology ; Receptors, IgE/metabolism ; Vasodilation |
Chemical Substances | Allergens ; Anaphylatoxins ; Receptors, IgE ; Immunoglobulin E (37341-29-0) ; Histamine (820484N8I3) |
Language | English |
Publishing date | 2021-04-05 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't ; Review |
ZDB-ID | 121011-7 |
ISSN | 1097-6825 ; 1085-8725 ; 0091-6749 |
ISSN (online) | 1097-6825 ; 1085-8725 |
ISSN | 0091-6749 |
DOI | 10.1016/j.jaci.2021.02.012 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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