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Related Experiment Videos

Inflammatory responses to mast cell granules.

M Kaliner, R Lemanske

    Federation Proceedings
    |October 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Late phase allergic reactions, occurring hours after initial exposure, involve inflammation and neutrophil influx. Understanding these reactions offers new therapeutic targets for allergy and asthma.

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    Area of Science:

    • Immunology
    • Allergy Research

    Background:

    • Mast cell degranulation triggers immediate allergic reactions.
    • Late phase allergic reactions (LPR) develop hours later, causing persistent inflammation.
    • LPR contribute to airway and nasal hyperreactivity.

    Purpose of the Study:

    • To analyze the pathogenesis of late phase allergic reactions.
    • To identify mechanisms and potential therapeutic targets for LPR.

    Main Methods:

    • Utilized a rodent model to study LPR.
    • Investigated the role of inflammatory factors, complement, and neutrophils in LPR.
    • Assessed the inhibitory effects of antihistamines and corticosteroids on LPR.

    Main Results:

    • LPR are independent of complement activation.

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  • Neutrophil influx is crucial for the full expression of LPR.
  • H-1 and H-2 antihistamines, along with corticosteroids, can inhibit LPR.

    • Conclusions:

    • Late phase allergic reactions are a distinct, significant component of allergic responses.
    • Understanding LPR pathogenesis opens new avenues for treating allergic diseases and asthma.
    • Targeting LPR mechanisms may provide more effective allergy management.