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Related Experiment Videos

Fishing for a diagnosis.

M E Pauszek

    Indiana Medicine : the Journal of the Indiana State Medical Association
    |February 1, 1991
    PubMed
    Summary
    This summary is machine-generated.

    Trimethylaminuria, a metabolic disorder causing fishy body odor, results from a liver enzyme deficiency. Dietary changes can help manage this rare condition, which has no associated developmental issues.

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    Area of Science:

    • Biochemistry
    • Metabolic Disorders
    • Human Genetics

    Background:

    • Trimethylaminuria (TMAU) is a rare metabolic disorder characterized by the accumulation of trimethylamine (TMA).
    • It is primarily caused by a deficiency in the liver enzyme flavin-containing monooxygenase 3 (FMO3), responsible for oxidizing TMA to its odorless precursor, trimethylamine N-oxide (TMAO).
    • First described in 1970, TMAU presents a unique diagnostic challenge due to its distinctive odor.

    Observation:

    • A patient presented with a complaint of persistent fishy-smelling urine and perspiration.
    • The symptom was partially alleviated through dietary modifications.
    • No other family members exhibited similar symptoms, suggesting a sporadic or recessive inheritance pattern.

    Findings:

    • The patient's symptoms are consistent with trimethylaminuria.

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  • The condition is secondary to a deficiency of the liver enzyme, trimethylamine oxide (TMAO) production.
  • Fishy-smelling urine and perspiration are diagnostic indicators of this anomaly.

    • Implications:

    • Early diagnosis and management of trimethylaminuria are crucial for patient well-being.
    • Dietary interventions, particularly limiting dietary precursors of TMA, can effectively control symptoms.
    • Further research is needed to determine the exact frequency of trimethylaminuria in the general population.