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Related Experiment Videos

The De Barsy syndrome.

Deanna Guerra1, Claudio Fornieri, Barbara Bacchelli

  • 1Department of Biomedical Sciences, General Hospital, University of Modena and Reggio Emilia, Modena, Italy. guerra.deanna@unimore.it

Journal of Cutaneous Pathology
|August 28, 2004
PubMed
Summary

De Barsy syndrome affects elastic tissue, causing aged appearance and dwarfism. This study reveals reduced elastic fibers and altered protein expression, suggesting both degradation and synthesis issues in this rare genetic disorder.

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Area of Science:

  • Genetics and rare diseases research
  • Dermatology and connective tissue disorders
  • Biochemistry and molecular biology

Background:

  • De Barsy syndrome, a cutis laxa subgroup, presents with aged appearance, dwarfism, and skin/cornea degeneration.
  • The underlying pathogenesis of De Barsy syndrome remains largely unknown.
  • This study investigates the pathogenetic mechanisms of De Barsy syndrome through a detailed case analysis.

Observation:

  • A 12-year clinical follow-up of a boy with De Barsy phenotype was conducted.
  • Skin biopsy analysis included ultrastructural, morphometric, and immunocytochemical studies.
  • Lysyl oxidase activity was measured in cultured skin fibroblasts.

Findings:

  • Significant reduction in dermal elastic fibers observed in the patient compared to controls.

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  • Collagen structure, content, and distribution were normal.
  • Increased immunoreaction for fibrillin-1, neutrophilic elastase, and TNF-alpha; decreased for TGF-beta.
  • Normal lysyl oxidase activity in vitro fibroblasts.

    • Implications:

    • Confirms that the elastic component is primarily affected in De Barsy syndrome.
    • Suggests that both degradation and synthesis pathways of elastic fibers are implicated.
    • Provides crucial insights into the molecular mechanisms underlying this rare connective tissue disorder.