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Immunoreactive alpha interferon in cervical flat koilocytic lesions and intraepithelial neoplasia

C J Stewart1, M A Farquharson, A M McNicol

  • 1University Department of Pathology, Glasgow Royal Infirmary.

Journal of Clinical Pathology
|March 1, 1990
PubMed

Insights

Human papillomavirus (HPV) infection does not appear to induce alpha interferon production in cervical squamous cells. However, alpha interferon was detected in Langerhans

Area of Science:

  • Immunology
  • Gynecologic Pathology
  • Virology

Background:

  • Human papillomavirus (HPV) is a common cause of cervical abnormalities.
  • Koilocytic atypia and cervical intraepithelial neoplasia (CIN) are HPV-associated conditions.
  • The role of alpha interferon in HPV infection of the cervix is not well understood.

Purpose of the Study:

  • To investigate the presence of alpha interferon in cervical tissues with HPV-related changes.
  • To determine if HPV infection directly induces alpha interferon production in keratinocytes.
  • To examine alpha interferon expression in immune cells within HPV-affected cervical tissue.

Main Methods:

  • Immunocytochemical staining for alpha interferon was performed on cervical biopsy specimens.
  • Specimens included non-condylomatous koilocytic atypia, cervical intraepithelial neoplasia, and normal cervical tissue.
  • Analysis focused on keratinocytes and stromal inflammatory cells, including Langerhans' cells.

Main Results:

  • Koilocytes did not show alpha interferon immunoreactivity.
  • Only four cases of cervical intraepithelial neoplasia exhibited keratinocyte staining for alpha interferon.
  • Variable, sometimes prominent, alpha interferon staining was observed in stromal inflammatory cells and intraepithelial Langerhans' cells.

Conclusions:

  • HPV infection alone does not seem to stimulate alpha interferon production in cervical squamous epithelium.
  • Alpha interferon expression in Langerhans' cells suggests a role in the host immune response to HPV.
  • Findings support the origin of Langerhans' cells from the mononuclear phagocyte system.

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