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Related Experiment Videos

Diameter changes in rabbit aorta during fixation at physiological pressure.

A Tindall, E Svendsen

    Atherosclerosis
    |February 1, 1984
    PubMed
    Summary
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    Rabbit aortas significantly distend with glutaraldehyde infusion, reaching levels higher than in vivo. This process flattened intimal folds, particularly with greater distension, impacting aortic structure.

    Area of Science:

    • Vascular biology
    • Biomaterials science
    • Surgical research

    Background:

    • Glutaraldehyde is used to cross-link proteins in biological tissues.
    • Understanding tissue distension is crucial for applications like vascular grafts and tissue engineering.
    • The mechanical properties of the aorta under artificial conditions require detailed investigation.

    Purpose of the Study:

    • To quantify the distension of rabbit aorta during glutaraldehyde infusion.
    • To analyze the effect of glutaraldehyde-induced distension on aortic intimal folds.
    • To compare ex vivo aortic distension with in vivo conditions.

    Main Methods:

    • Rabbit aortas were subjected to glutaraldehyde infusion at a constant pressure of 100 mm Hg.
    • Aortic distension was measured over a 2-hour period.

    Related Experiment Videos

  • The morphology of intimal folds was examined in relation to the degree of distension.

    • Main Results:

    • Aorta distension was rapid and maximal at the beginning of the infusion.
    • The distension approached a plateau within 2 hours, exceeding in vivo levels.
    • Significant flattening of intimal folds occurred, correlating with the extent of distension.

    Conclusions:

    • Glutaraldehyde infusion causes substantial ex vivo aortic distension beyond physiological limits.
    • The mechanical stress from distension alters aortic microstructure, flattening intimal folds.
    • These findings have implications for the use of glutaraldehyde-treated aortic tissues in biomedical applications.