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A Practical and Novel Method to Extract Genomic DNA from Blood Collection Kits for Plasma Protein Preservation
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[Hemodynamic effect of plasma DNA]

I V Gannushkina, M L Farago, A L Antelava

    Vestnik Rossiiskoi Akademii Meditsinskikh Nauk
    |July 15, 1998
    PubMed
    Summary

    Plasma DNA concentration and fragment length influence blood flow dynamics. Healthy individuals with long DNA fragments show inverse relationships with hemodynamic resistance, unlike patients with mixed fragment lengths.

    Area of Science:

    • Biophysics
    • Cardiovascular Science
    • Molecular Biology

    Background:

    • Plasma DNA (cell-free DNA) is increasingly recognized for its potential roles beyond a simple biomarker.
    • Hemodynamic resistance and the Toms effect, a phenomenon related to fluid flow and particle interaction, are crucial in cardiovascular health.

    Purpose of the Study:

    • To investigate the hemodynamic effects of plasma DNA, specifically its concentration and molecular fragment length.
    • To explore the relationship between plasma DNA characteristics and hemodynamic resistance, including the Toms effect.

    Main Methods:

    • Measurement of plasma DNA concentrations and molecular fragment lengths in healthy donors and patients.
    • Assessment of hemodynamic resistance and detection of the Toms effect in blood samples and DNA solutions.

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  • Comparison of hemodynamic effects using DNA from human umbilical cord blood versus commercial animal DNA.

    • Main Results:

    • The Toms effect was observed in all samples, indicating a general hemodynamic influence of DNA.
    • A clear inverse relationship was found between plasma DNA concentration (with long fragments) and hemodynamic resistance in healthy individuals.
    • Patients exhibited increased DNA concentrations with both long and short fragments, leading to a weaker inverse correlation with hemodynamic resistance due to short fragments.

    Conclusions:

    • Plasma DNA exerts a measurable hemodynamic effect.
    • The origin of long DNA molecular fragments, characteristic of healthy individuals, differs from that of short fragments appearing in patients with vascular disorders.
    • The length of DNA molecular fragments is critical for its hemodynamic properties and the manifestation of the Toms effect.