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Related Experiment Videos

[Erythrocyte membranes during malignant growth].

A K Zhuravlev, V V Murashko, M P Sherstnev

    Biulleten' Eksperimental'Noi Biologii I Meditsiny
    |November 1, 1984
    PubMed
    Summary

    Red blood cells from cancer patients exhibit altered responses to hydrogen peroxide, showing increased susceptibility to damage and enhanced antioxidant activity compared to healthy individuals. These findings highlight potential biomarkers for cancer detection.

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    Area of Science:

    • Biochemistry
    • Oncology
    • Cell Biology

    Background:

    • Hydrogen peroxide is a reactive oxygen species that can damage cells.
    • Red blood cell membranes are susceptible to oxidative stress.
    • Cancer is associated with altered cellular metabolism and increased oxidative stress.

    Purpose of the Study:

    • To investigate the chemiluminescence response of red blood cells from cancer patients and normal subjects when exposed to hydrogen peroxide.
    • To compare the susceptibility of red blood cells from cancer patients and healthy donors to hydrogen peroxide-induced damage.
    • To assess potential differences in antioxidant activity within red blood cells of cancer patients.

    Main Methods:

    • Incubation of red blood cell suspensions from normal subjects and cancer patients with hydrogen peroxide.

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  • Measurement and analysis of chemiluminescence, including rapid and slow components.
  • Determination of concentration dependencies of chemiluminescence.
  • Evaluation of the dependence of chemiluminescence on temperature.

    • Main Results:

    • Chemiluminescence was observed upon incubation with hydrogen peroxide, comprising rapid and slow components.
    • Significant differences in chemiluminescence were detected between red blood cells of cancer patients and normal donors.
    • Cancer patients' red blood cells demonstrated decreased membrane resistance to hydrogen peroxide-induced damage.
    • Elevated antioxidant activity was inferred in the red blood cells of cancer patients.

    Conclusions:

    • Red blood cell membranes in cancer patients exhibit increased vulnerability to hydrogen peroxide.
    • Cancer patients' red blood cells display heightened antioxidant capacity.
    • Chemiluminescence assays may serve as a tool to detect alterations in red blood cell membranes associated with cancer.