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Related Experiment Videos

Lens changes in a galactosemic fetus.

A Vannas, M J Hogan, M S Golbus

    American Journal of Ophthalmology
    |October 1, 1975
    PubMed
    Summary
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    Prenatal diagnosis of galactosemia was achieved through amniocentesis in a high-risk pregnancy. This allowed for early identification of the genetic disorder, preventing further complications.

    Area of Science:

    • Medical Genetics
    • Prenatal Diagnosis
    • Biochemistry

    Background:

    • Galactosemia is a rare genetic disorder affecting carbohydrate metabolism.
    • Early diagnosis and intervention are crucial for managing galactosemia and preventing severe health complications.

    Observation:

    • A couple with a history of a child presumed to have galactosemia underwent prenatal testing during their fourth pregnancy.
    • Red blood cell galactose 1-phosphate uridyl transferase levels indicated both parents were heterozygous carriers for the deficiency.

    Findings:

    • Prenatal diagnosis of galactosemia was confirmed in the fetus via amniocentesis and tissue culture.
    • Biochemical analysis of fetal tissues (lung, liver) supported the galactosemia diagnosis.
    • Electron microscopy revealed cataractous changes and degenerative alterations in fetal lens epithelial cells.

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    Implications:

    • This case highlights the successful application of prenatal diagnosis for galactosemia in a high-risk family.
    • Early identification enables informed reproductive decisions and potential management strategies.
    • Understanding the ocular pathology in fetal galactosemia provides insights into disease progression.