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Morphine-induced immune thrombocytopenia

P L Cimo, J J Hammond, J L Moake

    Archives of Internal Medicine
    |April 1, 1982
    PubMed
    Summary

    A woman developed sudden thrombocytopenia (low platelet count) after receiving morphine sulfate. Researchers identified a morphine-dependent antibody causing this immune reaction, a previously undescribed condition.

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    Area of Science:

    • Immunology
    • Hematology
    • Pharmacology

    Background:

    • Immune thrombocytopenia can be triggered by various medications.
    • Opioid analgesics like morphine sulfate are commonly used for pain management.

    Observation:

    • A 23-year-old woman experienced sudden, severe thrombocytopenia shortly after morphine sulfate administration.
    • Diagnostic tests revealed the presence of a specific antibody in her serum linked to morphine.

    Findings:

    • A morphine-dependent, complement-dependent antibody was identified in the patient's IgG immunoglobulin fraction.
    • This antibody demonstrated drug-dependent platelet lysis activity with morphine and other narcotic analgesics.
    • Antibody levels decreased over eight months as thrombocytopenia resolved.

    Implications:

    • This case suggests morphine sulfate can induce immune thrombocytopenia.
    • The findings highlight the potential for opioid-induced immune-mediated platelet destruction.
    • Further research is warranted to understand the mechanisms and prevalence of drug-induced immune thrombocytopenia with opioids.

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