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Related Experiment Videos

Familial aortic dissecting aneurysm.

P Nicod1, C Bloor, M Godfrey

  • 1Division of Cardiology, University of California, San Diego Medical Center 92103-1990.

Journal of the American College of Cardiology
|March 15, 1989
PubMed
Summary
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A rare genetic disorder causes aortic dissecting aneurysm and arterial dilation in multiple family members across generations. This autosomal dominant condition, distinct from Marfan syndrome, highlights a critical need for further research into its underlying genetic defect.

Area of Science:

  • Cardiovascular Genetics
  • Medical Genetics
  • Aortic Diseases

Background:

  • Familial aggregation of aortic aneurysms and dissections suggests a genetic basis.
  • Early-onset aortic pathology necessitates understanding underlying inherited conditions.
  • Distinguishing from connective tissue disorders like Marfan syndrome is crucial for diagnosis.

Observation:

  • Nine family members across two generations presented with aortic dissecting aneurysm or dilation at young ages.
  • Affected individuals lacked Marfan syndrome or a history of hypertension.
  • Histological findings included medial degeneration with loss of elastic fibers and mucopolysaccharide deposition.

Findings:

  • Autosomal dominant inheritance pattern observed in the affected family.

Related Experiment Videos

  • Normal collagen types I and III and elastin-associated microfibrillar structures in affected individuals.
  • Significant familial clustering of aortic aneurysms and dissections points to a specific genetic etiology.

    • Implications:

    • Suggests a novel, genetically determined form of aortic disease.
    • Underscores the importance of family history in diagnosing aortic pathologies.
    • Further research is needed to identify the specific genetic defect responsible for this condition.