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Related Experiment Videos

Ultrastructural studies in stable vitiligo.

Ana L Panuncio1, R Vignale

  • 1Department of Dermatology, Clinical Hospital, Montevideo, Uraguay. anapan@adinet.com.uy

The American Journal of Dermatopathology
|January 25, 2003
PubMed
Summary
This summary is machine-generated.

Even in stable vitiligo, skin depigmentation involves significant cellular activity. Ultrastructural analysis reveals changes in skin cells and immune cells, suggesting a cytotoxic process.

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Area of Science:

  • Dermatology
  • Immunology
  • Cell Biology

Background:

  • Vitiligo is a melanocyte disorder causing skin depigmentation.
  • Stable vitiligo lesions were analyzed ultrastructurally.

Observation:

  • Biopsy specimens from stable vitiligo lesions were examined.
  • Alterations were noted in keratinocytes, Langerhans cells, melanocytes, lymphocytes, and macrophages.

Findings:

  • The basal membrane showed discontinuities.
  • Dermal cells appeared to engulf epidermal material.
  • Cytologic activity suggests cell-mediated cytotoxicity.

Implications:

  • Stable vitiligo involves active cellular processes.
  • Findings resemble ultrastructural changes seen in lichenoid reactions.