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Related Experiment Videos

Ro/SSA antigen in human epidermis.

S K Jones1, S Coulter, C Harmon

  • 1Department of Dermatology, University of Colorado School of Medicine, Denver 80262.

The British Journal of Dermatology
|March 1, 1988
PubMed
Summary
This summary is machine-generated.

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Researchers found that the Ro/SSA antigen is present in both adult and neonatal epidermis. This finding supports the hypothesis that anti-Ro/SSA antibodies contribute to skin damage in lupus erythematosus syndromes.

Area of Science:

  • Immunodermatology
  • Autoimmunity
  • Molecular Biology

Background:

  • Previous studies using immunofluorescence showed that anti-Ro/SSA autoantibodies in patient serum react with epidermal components.
  • The specific antigen involved in this reaction within the epidermis was not fully identified.

Purpose of the Study:

  • To identify the specific antigen in human epidermis that reacts with anti-Ro/SSA autoantibodies.
  • To determine the presence of this antigen in both adult and neonatal epidermis.
  • To support the hypothesis linking anti-Ro/SSA antibodies to skin damage in specific autoimmune syndromes.

Main Methods:

  • Immunoblotting technique was employed to identify the antigen.
  • Human epidermal samples from adults and neonates were analyzed.

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Main Results:

  • Immunoblotting confirmed that the antigen identified in the epidermis by anti-Ro/SSA sera is indeed the Ro/SSA antigen.
  • Ro/SSA antigen was detected in both adult and neonatal epidermis.
  • The presence of Ro/SSA antigen in injured tissues associated with subacute cutaneous lupus erythematosus and neonatal lupus erythematosus was observed.

Conclusions:

  • Ro/SSA antigen is present in the epidermis of both adults and neonates.
  • The findings support the hypothesis that anti-Ro/SSA antibodies react with Ro/SSA antigen in the skin.
  • This interaction is likely important in the initiation of tissue damage in anti-Ro/SSA-associated syndromes like lupus erythematosus.