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[Allergy and histamine release (author's transl)]

J P Grilliat

    La Semaine Des Hopitaux : Organe Fonde Par L'Association D'Enseignement Medical Des Hopitaux De Paris
    |April 8, 1979
    PubMed
    Summary

    Histamine release from mast cells and basophils is key in allergic reactions. Understanding these complex immune responses, including non-immunologic triggers, is crucial for diagnosing histamine-related conditions.

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    Area of Science:

    • Immunology
    • Cell Biology
    • Pharmacology

    Context:

    • Histamine is a crucial mediator released from mastocytes and basophils.
    • Allergic reactions, particularly reaginic types, involve complex cellular and biochemical pathways.
    • Understanding histamine release mechanisms is vital for diagnosing and managing allergic conditions.

    Purpose:

    • To elucidate the multifaceted mechanisms of histamine release in various allergic and non-allergic conditions.
    • To detail the cellular and molecular events during reaginic allergy, including IgE-antigen interactions and signal transduction pathways.
    • To explore non-immunologic triggers of histamine release and their similarities to immunoallergic reactions.

    Summary:

    • Histamine release occurs via immunologic pathways (reaginic allergy involving IgE, complement activation) and non-immunologic pathways (physical, chemical, venom triggers).
    • Reaginic allergy involves IgE bridging, cell activation, cyclic nucleotide signaling (cAMP, cGMP), and cytoskeletal changes leading to degranulation.
    • Calcium and magnesium ions play regulatory roles in histamine release.
    • Non-immunologic histamine release mechanisms share similarities with immunoallergic responses, complicating clinical diagnosis.

    Impact:

    • Provides a comprehensive overview of histamine release, aiding in the differential diagnosis of histaminic reactions.
    • Highlights the complexity of allergic responses, emphasizing the need for careful immunologic evaluation.
    • Contributes to a better understanding of mediator release in allergy and inflammation, potentially informing therapeutic strategies.

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