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Related Experiment Videos

Homocystinuria presenting as multiple arterial occlusions.

G Newman, J R Mitchell

    The Quarterly Journal of Medicine
    |January 1, 1984
    PubMed
    Summary

    Pyridoxine-responsive homocystinuria can cause arterial occlusions, even without typical symptoms. Early screening is crucial for patients with unexplained vascular issues, especially during pregnancy.

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    Area of Science:

    • Medical Genetics
    • Vascular Medicine
    • Metabolic Disorders

    Background:

    • Homocystinuria is an inherited metabolic disorder.
    • Pyridoxine (Vitamin B6) is a cofactor for enzymes involved in homocysteine metabolism.
    • Unusual vascular events can be a manifestation of homocystinuria.

    Observation:

    • A patient presented with multiple arterial occlusions post-pregnancy, lacking other common homocystinuria signs.
    • Family screening confirmed autosomal recessive inheritance of homocystinuria.
    • Platelet function and vascular biopsies were normal in affected individuals.

    Findings:

    • The patient's arterial occlusions were linked to pyridoxine-responsive homocystinuria.
    • Pregnancy may precipitate thrombotic events due to increased fetal nutrient demand.
    • The precise mechanism for thrombotic complications in this case remains unclear.

    Implications:

    • Suggests screening for homocystinuria in patients with unexplained arterial occlusions, irrespective of other symptoms.
    • Highlights the potential role of pregnancy in unmasking metabolic disorders like homocystinuria.
    • Emphasizes the need for further research into the thrombotic mechanisms of homocystinuria.

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