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Biotin-responsive immunoregulatory dysfunction in multiple carboxylase deficiency.

A Fischer, A Munnich, J M Saudubray

    Journal of Clinical Immunology
    |January 1, 1982
    PubMed
    Summary
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    Multiple carboxylase deficiency impairs immune function due to low prostaglandin E (PGE) production. Biotin treatment corrected this immune dysfunction and PGE deficiency in a young patient.

    Area of Science:

    • Immunology
    • Biochemistry
    • Human Genetics

    Background:

    • Prostaglandins (PG) are crucial for activating the human immunoregulatory system.
    • Multiple carboxylase deficiency (MCD) is a metabolic disorder affecting biotin-dependent enzymes.

    Observation:

    • A 12-month-old boy with MCD exhibited impaired immunoregulatory function.
    • This impairment was linked to defective production of prostaglandin E (PGE) by monocytes.

    Findings:

    • In vitro addition of PGE corrected the abnormal immune response.
    • In vivo biotin administration resolved both PGE deficiency and immunoregulatory dysfunction.
    • PGE deficiency in MCD may stem from reduced activity of biotin enzyme acetyl CoA carboxylase, impacting malonyl CoA availability for prostaglandin synthesis.

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    Implications:

    • Highlights the critical role of PGE in immune regulation.
    • Suggests biotin supplementation as a therapeutic strategy for immune dysfunction in MCD.
    • Establishes a biochemical link between biotin metabolism and prostaglandin synthesis in immune cells.