Related Experiment Videos
Proliferating cell nuclear antigen (PCNA) expression in childhood lymphomas
M Kalmanti1, P Kanavaros, A Sakalidou
1Dept. of Paediatric Haematology-Oncology and Pathology, University Hospital Heraklion, Greece.
Acta Morphologica Hungarica
|January 1, 1992
Summary
Proliferating cell nuclear antigen (PCNA) indicates cell proliferation in childhood lymphomas. High-grade non-Hodgkin
Area of Science:
- Pediatric Oncology
- Hematopathology
- Cell Biology
Background:
- Childhood lymphomas, including Hodgkin's disease (HD) and non-Hodgkin's lymphomas (NHL), are significant hematologic malignancies.
- Understanding the proliferation kinetics of these tumors is crucial for diagnosis and treatment stratification.
Purpose of the Study:
- To investigate the expression of proliferating cell nuclear antigen (PCNA) as a marker of cell proliferation in childhood HD and NHL.
- To compare proliferation rates between high-grade and low-grade NHL, and between NHL and HD.
Main Methods:
- Paraffin-embedded tissue sections from 21 childhood HD and 28 NHL cases were analyzed.
- Immunohistochemistry using an anti-PCNA antibody was performed to detect PCNA-positive cells.
- PCNA labeling indices were quantified for tumor cells and background populations.
Main Results:
- All examined cases of HD and NHL demonstrated PCNA reactivity.
- Hodgkin and Reed-Sternberg (HRS) cells in HD showed a mean PCNA positivity of 50.9%, with background cells at 11.7%.
- NHL cases exhibited a mean PCNA positivity of 61.2%, with high-grade tumors (63.6%) showing higher proliferation than low-grade tumors (32%).
Conclusions:
- PCNA expression is a reliable indicator of proliferation in childhood lymphomas.
- High-grade NHL demonstrates a higher proliferation rate compared to low-grade NHL and HD.
- PCNA assessment aids in understanding tumor biology and may guide individualized treatment approaches for childhood lymphomas.