Flow cytometric DNA measurements in human thyroid tumors
Virchows Archiv. B, Cell Pathology Including Molecular Pathology
|January 1, 1986
Summary
Flow cytometry analysis revealed DNA aneuploidy in 65% of follicular thyroid carcinomas, correlating with higher S-phase fractions and increased anaplasia. Normal tissues and adenomas showed only diploid cells.
Area of Science:
- Oncology
- Cell Biology
- Pathology
Background:
- Thyroid nodules represent a spectrum from benign to malignant conditions.
- Accurate diagnosis and prognosis are crucial for effective patient management.
- Cell cycle analysis can provide insights into tumor behavior.
Purpose of the Study:
- To investigate DNA distribution and cell cycle phases in various thyroid tissues.
- To determine the prevalence of DNA aneuploidy in thyroid neoplasms.
- To correlate cell cycle parameters with histological features and malignancy.
Main Methods:
- Flow cytometry (FCM) was employed to analyze DNA content and cell cycle distribution.
- 52 thyroid tissue samples were analyzed, including normal tissues, follicular adenomas, follicular carcinomas, medullary carcinoma, and fibrosarcomas.
- DNA ploidy (diploid vs. aneuploid) and S-phase fraction were quantified.
Main Results:
- Normal thyroid tissues and follicular adenomas exhibited exclusively diploid DNA cell populations.
- DNA aneuploid cell lines were detected in 13 out of 20 (65%) follicular carcinomas.
- Follicular carcinomas with aneuploid populations showed significantly higher S-phase fractions compared to diploid cell lines and follicular adenomas. Aneuploidy was more common in poorly differentiated carcinomas.
Conclusions:
- DNA aneuploidy is a frequent finding in follicular thyroid carcinomas, distinguishing them from benign lesions.
- Increased S-phase fraction in aneuploid populations suggests enhanced proliferative activity in malignant thyroid cells.
- Cell cycle analysis, particularly DNA ploidy, may serve as a valuable adjunct in the diagnosis and prognosis of thyroid carcinomas.
