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IgE sensitization in snow crab-processing workers.

A Cartier, J L Malo, H Ghezzo

    The Journal of Allergy and Clinical Immunology
    |August 1, 1986
    PubMed
    Summary
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    Occupational asthma in snow crab workers is linked to specific IgE antibodies. Testing revealed that snow crab cooking water and meat extracts effectively identify this allergic reaction, confirming an IgE-mediated mechanism.

    Area of Science:

    • Immunology
    • Occupational Health
    • Allergology

    Background:

    • Occupational asthma is common in snow crab processing.
    • The specific immune mechanism causing this condition was previously unknown.

    Purpose of the Study:

    • To investigate the immunologic mechanism of occupational asthma in snow crab workers.
    • To evaluate the diagnostic utility of snow crab extracts for identifying allergic responses.

    Main Methods:

    • Performed skin prick tests and measured serum-specific IgE (RAST) using snow crab meat and cooking water extracts.
    • Tested 119 workers, including 54 with confirmed occupational asthma.
    • Compared snow crab extracts with commercial crab extracts.

    Main Results:

    Related Experiment Videos

    • A significant correlation was found between immediate skin reactivity or elevated specific IgE to crab extracts and occupational asthma.
    • Snow crab cooking water and meat extracts demonstrated higher sensitivity and potency than commercial preparations.
    • Good agreement was observed between skin tests and RAST results.

    Conclusions:

    • Occupational asthma in snow crab processing workers is likely mediated by an immunoglobulin E (IgE) mechanism.
    • Snow crab cooking water extract is a potent and sensitive diagnostic tool for this condition.