Fibrogenic cytokines in vulvar lichen sclerosus: An immunohistochemical study

Paolo Carli, Silvia Moretti, Adelina Spallanzani, Emilio Berti, Antonio Cattaneo

Research output: Contribution to journalArticlepeer-review

Abstract

OBJECTIVE: To evaluate the expression of fibrogenic cytokines in lichen sclerosus (LS) infiltrate as compared with lichen planus (LP) infiltrate. STUDY DESIGN: Eight cases of vulvar LS (early stage, n = 3; well developed or old, n = 5) and 4 of vulvar LP were studied. Monoclonal antibodies directed against some of the major fibrogenic cytokines (IL-4, TGF-β, IL-6) and against IFN-γ, which inhibits collagen synthesis, were used per the alkaline phosphatase/anti-alkaline phosphatase technique on frozen sections. RESULTS: Staining for IL-4 revealed higher expression of fibrogenic cytokines (more than 50% infiltrating cells)in the LS infiltrate, mainly in early lesions, than in LP. Conversely, staining for IFN-γ in LS was poor (less than 10% infiltrating cells), while strong positivity (more than 60% infiltrating cells) was found in LP. Staining for TGF-β, a mediator of fibrosis in scleroderma, was similar in both LS and LP dermis. CONCLUSION: This study showed the immunohistochemical expression of fibrogenic cytokines in vulvar LS, with a different pattern as compared to that of LP. It is conceivable that dermal infiltrating cells actively participate, via cytokine production, in the pathogenesis of fibrosis in LS.

Original languageEnglish
Pages (from-to)161-165
Number of pages5
JournalJournal of Reproductive Medicine for the Obstetrician and Gynecologist
Volume42
Issue number3
Publication statusPublished - Mar 1997

Keywords

  • cytokines, immunohistochemistry
  • lichen sclerosus
  • vulvar diseases

ASJC Scopus subject areas

  • Obstetrics and Gynaecology
  • Reproductive Medicine

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