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Sensitive three-parameter flow-cytometric detection of abnormal cells in human cervical cancers: a pilot study
Journal of Cancer Research and Clinical Oncology
|January 1, 1981
Summary
Flow cytometry analysis of human cervical cells identified malignant samples by detecting carcinoembryonic antigen (CEA) positive cells. This method accurately distinguished tumor cells, offering a low false positive rate for cervical cancer detection.
Area of Science:
- Gynecologic Oncology
- Cell Biology
- Immunohistochemistry
Background:
- Accurate diagnosis of cervical cancer is crucial for effective treatment.
- Distinguishing between normal, inflammatory, and malignant cervical cells can be challenging.
- Flow cytometry offers a quantitative method for cellular analysis.
Purpose of the Study:
- To evaluate the utility of simultaneous measurement of cell volume, DNA content, and carcinoembryonic antigen (CEA) or epithelial membrane antigen (EMA) expression in formaldehyde-fixed human cervical cells.
- To differentiate malignant cervical cells from normal cells and cell debris using flow cytometry.
- To assess the diagnostic accuracy, including false positive and false negative rates, of this multiparametric approach.
Main Methods:
- Formaldehyde-fixed human cervical cells from 21 malignant tumors and 11 normal patients were analyzed.
- Simultaneous measurements of cell volume, DNA content, and CEA/EMA antigen expression were performed using a Fluvo-Metricell flow cytometer.
- Cell cycle phase, aneuploidy, and cell populations (debris, inflammatory, parenchymal, tumor) were identified.
Main Results:
- Simultaneous measurements enabled clear distinction of intact cells, cell cycle phases, aneuploid cells, and cell types.
- Malignant samples were identified by the presence of >0.5% intermediate-sized CEA-positive cells.
- No significant correlation was found between CEA and EMA expression in malignant samples; the overall false positive rate was 6.3%, with no false negatives observed.
Conclusions:
- Simultaneous flow cytometry analysis of cell volume, DNA, and CEA/EMA is effective for identifying malignant cervical cells.
- The detection of intermediate-sized CEA-positive cells serves as a reliable marker for cervical malignancy.
- This method demonstrates high specificity and sensitivity for cervical cancer detection, with potential clinical utility.