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IgE-mediated hypersensitivity reactions

R G Fadal1

  • 1University of Texas Southwestern Medical Center, Dallas.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|September 1, 1993
PubMed
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Allergic reactions involve complex immunologic mechanisms, with Type I hypersensitivity now more diagnosable and treatable. This review covers immediate, late-phase reactions, and immunotherapy principles.

Area of Science:

  • Immunology
  • Allergy Research

Background:

  • Allergic reactions are well-defined immunopathologic disorders.
  • Rapid advancements are enhancing understanding of allergic disease mechanisms.

Purpose of the Study:

  • To discuss immunologic mechanisms of immediate, late-phase, and dual allergic reactions.
  • To investigate the role of cyclic nucleotides, mast cell degranulation, and cytokines in atopic allergy.
  • To review principles and challenges of specific immunotherapy.

Main Methods:

  • Review of existing literature on allergic reaction mechanisms.
  • Discussion of diagnostic and therapeutic advancements.
  • Investigation into cellular and molecular pathways involved in allergy.

Main Results:

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  • Type I Gell and Coombs hypersensitivity (IgE-mediated) is increasingly accessible to diagnosis and therapy.
  • Mechanisms of immediate, late-phase, and dual reactions are detailed.
  • Roles of cyclic nucleotides, nonimmune mast cell degranulation, and cytokines in atopy are explored.

Conclusions:

  • Understanding of allergic reaction immunobiology is rapidly advancing.
  • Accurate diagnosis and specific therapies for IgE-mediated allergic diseases are improving.
  • Specific immunotherapy presents both opportunities and challenges.