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Related Experiment Videos

Red blood cell membrane storage lesion.

S L Schrier, B Hardy, K Bensch

    Transfusion
    |March 1, 1979
    PubMed
    Summary
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    Storage of human erythrocytes causes membrane damage, impairing endocytosis. Primaquine-induced endocytosis is particularly sensitive to storage, offering a way to define this erythrocyte membrane storage lesion.

    Area of Science:

    • Blood banking
    • Cell biology
    • Membrane transport

    Background:

    • Erythrocyte storage in citrate-phosphate-dextrose (CPD) can lead to membrane lesions.
    • Endocytosis, a crucial cellular process, may be affected by erythrocyte storage.

    Purpose of the Study:

    • To investigate the impact of erythrocyte storage on membrane integrity and endocytic function.
    • To identify specific endocytic pathways sensitive to storage-induced lesions and ATP depletion.

    Main Methods:

    • Assessed endocytosis in resealed erythrocyte ghosts and intact stored erythrocytes.
    • Utilized various drugs (vinblastine, chlorpromazine, primaquine) to induce endocytosis.
    • Measured ATP levels and evaluated the effect of ATP regeneration on endocytic function.

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    Main Results:

    • Storage impaired Ca, Mg, and ATP-induced endocytosis in ghosts, reversible by ATP regeneration.
    • Vinblastine and chlorpromazine endocytosis were largely unaffected or variably inhibited by storage.
    • Primaquine endocytosis was significantly inhibited after 3-4 weeks of storage, even with ATP restoration, indicating a specific storage lesion.

    Conclusions:

    • Erythrocyte storage in CPD induces a membrane lesion affecting endocytosis.
    • Primaquine-induced endocytosis serves as a sensitive marker for defining and studying erythrocyte membrane storage lesions.
    • Understanding these lesions is crucial for optimizing erythrocyte preservation and transfusion efficacy.