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5'-nucleotidase activity in myeloma cells
Clinical and Laboratory Haematology
|January 1, 1983
Summary
This study found 5'-nucleotidase (5'-N) activity in most multiple myeloma plasma cells, but not in normal plasma cells. This enzyme activity is a potential marker for myeloma.
Area of Science:
- Hematology
- Biochemistry
- Oncology
Background:
- Plasma cells are crucial in the immune system.
- Multiple myeloma is a cancer of plasma cells.
- 5 -nucleotidase (5 -N) is an enzyme with roles in cellular metabolism.
Purpose of the Study:
- To investigate the presence and diagnostic potential of 5 -nucleotidase (5 -N) activity in plasma cells.
- To differentiate between normal and cancerous (myelomatous) plasma cells using cytochemical analysis of 5 -N activity.
Main Methods:
- Cytochemical staining of bone marrow smears to detect 5 -N activity.
- Analysis of plasma cells from 11 multiple myeloma patients and 12 healthy controls.
- Evaluation of the effect of unfixed smear storage on enzyme activity.
Main Results:
- Significant 5 -N activity was detected in approximately 90% of plasma cells from multiple myeloma patients.
- Plasma cells from healthy controls showed no detectable 5 -N activity.
- Unfixed smears maintained 5 -N activity for up to 5 months at room temperature.
Conclusions:
- 5 -nucleotidase (5 -N) activity is a distinguishing feature of myelomatous plasma cells.
- This enzyme activity could serve as a potential diagnostic marker for multiple myeloma.
- The stability of 5 -N activity in unfixed samples supports its utility in diagnostic settings.
