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Related Experiment Videos

Indium 111 toxicity in the human lymphocyte.

E B Silberstein, S Watson, G Mayfield

    The Journal of Laboratory and Clinical Medicine
    |May 1, 1985
    PubMed
    Summary

    Indium-111 (111In) labeling of lymphocytes can disrupt their function and cause DNA damage, even at diagnostic exposure levels. This finding highlights potential risks associated with radiolabeled cell diagnostic procedures.

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    Area of Science:

    • Immunology
    • Nuclear Medicine
    • Cytogenetics

    Background:

    • Lymphocyte function is crucial for immune response.
    • Radiolabeling is used in diagnostic imaging and cell tracking.
    • The safety of radiolabeled cells in diagnostic procedures requires thorough evaluation.

    Purpose of the Study:

    • To assess the impact of Indium-111 (111In) labeling on lymphocyte viability and function.
    • To determine if 111In activities used in diagnostics cause cellular abnormalities.

    Main Methods:

    • Lymphocytes were labeled with 111In across a range of activities (0.2 to 500 muCi/10(8) cells).
    • Assessed lymphocyte response to mitogens.
    • Evaluated immunoglobulin synthesis, mitotic index, and chromosome aberrations.

    Main Results:

    • All tested lymphocyte functions were abnormal following 111In labeling.
    • Chromosome aberrations were observed.
    • Abnormalities occurred at 111In activities within diagnostic ranges.

    Conclusions:

    • Lymphocyte labeling with 111In can induce significant cellular dysfunction and genotoxicity.
    • Current diagnostic 111In labeling protocols may pose risks to lymphocyte integrity.
    • Further research is needed to mitigate these effects in clinical applications.

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