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Related Experiment Videos

Tenascin expression in normal and abnormal human endometrium

H Sasano1, H Nagura, K Watanabe

  • 1Department of Pathology and Obstetrics and Gynecology, Tohoku University School of Medicine, Sendai, Japan.

Modern Pathology : an Official Journal of the United States and Canadian Academy of Pathology, Inc
|May 1, 1993
PubMed
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Tenascin, an extracellular matrix glycoprotein, shows varying expression in the human endometrium. Intense tenascin staining in endometrial cancer may indicate invasive potential.

Area of Science:

  • Gynecologic Oncology
  • Extracellular Matrix Biology
  • Cancer Biomarkers

Background:

  • Tenascin is an extracellular matrix glycoprotein implicated in tissue development and cancer.
  • Its role in human endometrial epithelial growth and pathology requires further investigation.

Purpose of the Study:

  • To evaluate tenascin expression in normal, hyperplastic, and neoplastic human endometrium.
  • To determine if tenascin expression correlates with endometrial pathology and tumor invasiveness.

Main Methods:

  • Immunohistochemistry was performed on 84 endometrial specimens (normal, hyperplasia, carcinoma).
  • A novel monoclonal antibody against human tenascin was utilized for analysis.

Main Results:

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  • Weak periglandular tenascin immunoreactivity was found in proliferative endometrium but not secretory endometrium.
  • Approximately 60% of endometrial hyperplasias showed weak, irregular tenascin staining.
  • Invasive endometrial carcinomas exhibited intense, diffuse tenascin staining around tumor cells.

    • Conclusions:

    • Tenascin expression changes during endometrial carcinogenesis, suggesting a role in neoplastic epithelial-stromal interactions.
    • Intense and diffuse tenascin staining may serve as a stromal marker for the invasive capacity of human endometrial malignancies.