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Related Experiment Videos

A specific enzyme defect in gyrate atrophy.

M I Kaiser-Kupfer, D Valle, L A Del Valle

    American Journal of Ophthalmology
    |February 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

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    Gyrate atrophy is caused by a defect in ornithine aminotransferase (OAT). Patient cells showed no OAT activity, while her daughter had intermediate levels, indicating an inherited enzyme deficiency.

    Area of Science:

    • Biochemistry
    • Genetics
    • Ophthalmology

    Background:

    • Gyrate atrophy is a rare inherited eye disease.
    • The underlying enzyme defect was previously unknown.

    Observation:

    • Ornithine aminotransferase (OAT) activity was measured in lymphocytes.
    • A patient with gyrate atrophy, her daughter, and controls were studied.

    Findings:

    • The patient's cells exhibited no detectable OAT activity.
    • The daughter, an apparent obligate heterozygote, showed 44% of control OAT activity.
    • This study provides the first demonstration of a specific enzyme defect in gyrate atrophy.

    Implications:

    • Identifies OAT deficiency as the cause of gyrate atrophy.

    Related Experiment Videos

  • Opens avenues for diagnostic and therapeutic strategies.
  • Enhances understanding of inherited metabolic disorders affecting the eye.