Sensitization phase of allergic reactions Reexposure to antigen triggers the mast cells and basophils to release of the

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Sensitization Phase Of Allergic Reactions Reexposure To Antigen Triggers The Mast Cells And Basophils To Release Of The 1 (46.71 KiB) Viewed 21 times

Sensitization phase of allergic reactions Reexposure to antigen triggers the mast cells and basophils to release of the contents of their granules Tuberculin-Type hypersensitivity is an example of Hypersensitivity reactions that are the result of the binding of antibody directly to an antigen on the surface of a cell Atopy Example of Type II Hypersensitivity reactions A common atopic disorder caused by the intake of certain foods The wheal and flare reaction (hives) A. A genetic disposition to develop an allergic reaction ( IgE-mediated hypersensitivity) Food allergy B. C. D. E. F. G. H. 1. J. K. L. M. N. P. CD4+ TH1 cells and CD8+ cytotoxic T cells. Mast cells and basophils Type II hypersensitivity reactions Delayed-type hypersensitivity (DTH) Type I hypersensitivity Transfusion reactions FCERI Atopic urticaria IgE antibody is binds to specific receptors on mast cells and basophils Action of cytokines and co-stimulatory signals from TH2 cells that stimulate B cells to switch to producing IgE antibodies Cell mediated, not antibody mediated Hypersensitivity reactions that are the result of deposition of antigen-antibody immune complexes. The activation phase of allergic reactions Hemolytic disease of the newborn