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Related Experiment Videos

Intracranial vessels lack vasa vasorum.

B R Clower, D M Sullivan, R R Smith

    Journal of Neurosurgery
    |July 1, 1984
    PubMed
    Summary

    Researchers found that extracranial vessels have a vasa vasorum network, but not intracranial vessels. This absence may increase susceptibility to cerebral vasospasm and other abnormalities.

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    Area of Science:

    • Vascular biology
    • Neuroanatomy
    • Comparative anatomy

    Background:

    • The vasa vasorum (VV) are small blood vessels supplying the walls of larger blood vessels.
    • Their presence and distribution in cranial circulation are not fully understood.
    • Understanding VV is crucial for diagnosing and treating cerebrovascular diseases.

    Purpose of the Study:

    • To investigate the presence and extent of the vasa vasorum network in intracranial versus extracranial arteries.
    • To determine if the absence of VV in intracranial vessels contributes to their unique disease susceptibilities.

    Main Methods:

    • A micro-corrosion casting technique was employed to visualize vascular networks.
    • The study examined extracranial and intracranial arteries from three animal species.

    Main Results:

    • An extensive vasa vasorum network was clearly demonstrated in extracranial arteries.
    • Intracranial arteries of comparable size lacked a discernible vasa vasorum network.
    • This finding was consistent across all three animal species studied.

    Conclusions:

    • Cerebral arteries appear to lack a vasa vasorum network, unlike their extracranial counterparts.
    • The absence of VV in intracranial vessels may predispose them to conditions like cerebral vasospasm.
    • Further research is needed to elucidate the implications of this vascular anatomy in cerebrovascular pathologies.

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