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Dictionary » IgE-mediated hypersensitivity

IgE-mediated hypersensitivity

Introduction: IgE-mediated hypersensitivity

Description of IgE-mediated hypersensitivity

IgE-mediated hypersensitivity: Immediate hypersensitivity reaction - type I reaction, involves immunoglobulin E (IgE)-mediated release of chemical mediators from mast cells and basophils. Th2 cells produce IL-4 and IL-13, which then act on B cells to promote the production of antigen-specific IgE. Reexposure to the antigen can then result in the antigen binding to and cross-linking the bound IgE antibodies on the mast cells and basophils. This causes the release of preformed mediators (histamine, tryptase, tryptase, chemotactic factors), newly synthesized mediators (leukotrienes, prostaglandin, thromboxane, platelet-activating factor, adenosine, bradykinin), and cytokines from these cells that results in structural and functional changes to the affected tissue.
Source: Diseases Database

IgE-mediated hypersensitivity: Related Topics

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Source: Diseases Database

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