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Acute voluntary intoxication by ricin.

J Kopferschmitt, F Flesch, A Lugnier

    Human Toxicology
    |April 1, 1983
    PubMed
    Summary
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    A student survived a ricin seed ingestion due to prompt medical care. Despite severe symptoms, only a small amount of ricin was absorbed, leading to recovery.

    Area of Science:

    • Toxicology
    • Clinical Medicine
    • Pharmacology

    Background:

    • Ricin is a highly toxic protein found in castor beans.
    • Accidental or intentional ingestion of ricin seeds can lead to severe poisoning.

    Observation:

    • A 21-year-old student intentionally ingested 30 ricin seeds.
    • Symptoms included severe diarrhea, vomiting, abdominal cramps, dehydration, and circulatory collapse within 3 hours.
    • Biological changes observed were hemoconcentration.

    Findings:

    • The patient recovered with symptomatic treatment, including intravenous saline and glucose solutions.
    • Radioimmunologic quantification using Iodine-125 revealed that only a small fraction of the ingested ricin was absorbed into the bloodstream.
    • This suggests a limited systemic bioavailability of ricin from ingested seeds, even when masticated.

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    Implications:

    • Prompt and appropriate symptomatic treatment is crucial for managing ricin poisoning.
    • The study highlights the importance of quantifying ricin absorption in cases of seed ingestion.
    • Further research may explore factors influencing ricin absorption and develop targeted antidotes.