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Related Experiment Videos

[Nuclease activity in leukemia altered lymphoid tissue].

A I Svirnovskiĭ, T V Shimanskaia, V I Levin

    Voprosy Meditsinskoi Khimii
    |July 1, 1978
    PubMed
    Summary

    Enzymatic activities of deoxyribonucleases (DNAase) and ribonucleases (RNAase) changed in lymphoid tissues during mouse leukosis development. These enzyme alterations correlated with disease progression and cell proliferation rates.

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    Area of Science:

    • Biochemistry
    • Molecular Biology
    • Oncology

    Background:

    • Nucleic acid metabolism is crucial for cell proliferation and differentiation.
    • Enzymes like DNAase and RNAase play key roles in nucleic acid turnover.
    • Alterations in these enzymes are implicated in various disease states, including cancer.

    Purpose of the Study:

    • To investigate the changes in DNAase and RNAase activities during lymphoid leukosis development in mice.
    • To correlate enzymatic activity variations with disease progression, leukemic cell proliferation, and organ size.

    Main Methods:

    • Assay of DNAase I, DNAase II, RNAase I, and RNAase II activities.
    • Analysis of lymphoid tissues from AKR mice with spontaneous leukosis and C57BI mice with transplantable leukosis La.
    • Correlation of enzyme activity with disease stage, cell proliferation rates, and organ dimensions.

    Main Results:

    • DNAase and RNAase activities were altered in lymphoid tissues during leukosis development and in leukemic spleen tissue.
    • Enzyme activity variations differed between disease stages and were not uniformly increased or decreased.
    • Observed enzymatic changes correlated with the progression of leukosis, the rate of leukemic cell proliferation, and organ size.

    Conclusions:

    • Changes in DNAase and RNAase activities are characteristic of lymphoid leukosis in mice.
    • The observed variations in enzyme activity likely reflect their diverse roles in nucleic acid metabolism during cancer development.
    • These enzymatic alterations may serve as indicators of disease progression and cellular activity in leukosis.

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