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Plasma cell labeling index.

Philip R Greipp¹, Shaji Kumar

¹Hematology, Mayo Clinic, Rochester, NY, USA.

Methods in Molecular Medicine

|June 22, 2005

Summary

This summary is machine-generated.

The PC labeling index measures how fast multiple myeloma plasma cells (PCs) divide. This test, using 5-bromo-2'-deoxyuridine, aids in diagnosing and understanding the disease.

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Area of Science:

Hematology
Oncology
Immunology

Background:

Multiple myeloma is a cancer defined by the uncontrolled growth of monoclonal plasma cells (PCs).
The proliferation rate of these malignant PCs is a key factor in disease progression.
Measuring the percentage of PCs in the S-phase of the cell cycle quantifies this proliferative rate.

Purpose of the Study:

To detail a method for measuring the plasma cell (PC) labeling index.
To highlight the diagnostic and prognostic value of this index in multiple myeloma.

Main Methods:

Utilizing a slide-based immunofluorescence technique with 5-bromo-2 -deoxyuridine (BrdU) incorporation into dividing PC DNA.
Employing concurrent cytoplasmic staining for immunoglobulins and kappa/lambda light chains for specific PC identification and monoclonality confirmation.

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Describing manual and automated staining procedures, along with slide interpretation.

Main Results:

The PC labeling index accurately reflects the proliferative rate of malignant plasma cells.
The method allows for specific identification of PCs and confirmation of their monoclonal origin.
The technique is applicable to both bone marrow and peripheral blood specimens.

Conclusions:

The bone marrow peripheral blood labeling index is a valuable clinical test for multiple myeloma.
This method provides crucial diagnostic and prognostic information for patient management.