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Related Experiment Videos

Mouse red-cell rosettes in B-lymphoproliferative disorders.

D Catovsky, M Cherchi, A Okos

    British Journal of Haematology
    |June 1, 1976
    PubMed
    Summary

    Peripheral-blood lymphocytes in chronic lymphocytic leukaemia (CLL) form significantly more spontaneous rosettes with mouse red cells than in other B-cell disorders. This rosette formation test aids in distinguishing CLL from other B-lymphoproliferative diseases.

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    Area of Science:

    • Hematology
    • Immunology
    • Oncology

    Background:

    • Chronic lymphocytic leukaemia (CLL) is a B-cell lymphoproliferative disorder.
    • Accurate diagnosis and differentiation from other B-cell malignancies are crucial for appropriate treatment.
    • Existing diagnostic methods may require refinement for precise classification.

    Purpose of the Study:

    • To evaluate the diagnostic utility of spontaneous rosette formation with mouse red blood cells for CLL.
    • To compare rosette formation in CLL with other B-lymphoproliferative disorders and healthy controls.
    • To investigate the effect of neuraminidase treatment on rosette formation in CLL.

    Main Methods:

    • Assessed spontaneous rosette formation between peripheral-blood lymphocytes and mouse red blood cells in patients with CLL, other B-lymphoproliferative disorders, and normal controls.

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  • Categorized B-lymphoproliferative disorders into CLL and non-CLL groups.
  • Examined the impact of pre-treating lymphocytes with neuraminidase on rosette formation.

    • Main Results:

    • A high proportion of lymphocytes formed spontaneous rosettes with mouse red cells in 22/23 CLL cases, significantly higher than in non-CLL groups and controls.
    • Intermediate rosette formation was observed in "hairy" cell leukaemia.
    • Neuraminidase treatment significantly increased rosette formation exclusively in CLL cases.

    Conclusions:

    • Spontaneous rosette formation with mouse red cells is a highly sensitive indicator for chronic lymphocytic leukaemia (CLL).
    • This method shows potential as a valuable tool for differentiating CLL from other B-lymphoproliferative disorders, including prolymphocytic leukaemia.
    • Neuraminidase treatment enhances the specificity of this diagnostic test for CLL.