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Method for morphophysiological study of specific pial microvessels

W D Dietrich, E P Wei, J T Povlishock

    The American Journal of Physiology
    |February 1, 1980
    PubMed
    Summary
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    This study introduces a novel cranial window technique to simultaneously assess the physiology and morphology of feline pial vasculature. This method allows for detailed analysis of microvascular segments, enhancing our understanding of cerebrovascular function.

    Area of Science:

    • Neuroscience
    • Vascular Biology
    • Microscopy Techniques

    Background:

    • Studying the pial vasculature requires methods that preserve both physiological function and morphological integrity.
    • Existing techniques often compromise either physiological data or detailed morphological analysis.

    Purpose of the Study:

    • To develop and validate a novel methodology for the simultaneous physiological and morphological study of specific pial vascular segments in cats.
    • To enable direct correlation between the physiological state and ultrastructural characteristics of individual microvessels.

    Main Methods:

    • A cranial window was created for in vivo visualization, sketching, and physiological evaluation of pial vessels under controlled conditions.
    • Following physiological assessment, aldehyde perfusion was performed, and the pia with vasculature was carefully stripped from the cortex.

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  • Vessels were segmented for subsequent scanning or transmission electron microscopy, allowing direct comparison with physiological data.

    • Main Results:

    • The described method successfully preserves the configuration of pial vasculature for detailed morphological analysis.
    • It enables the matching of specific microvascular segments with their known physiological status.
    • This technique provides integrated physiological and morphological data for the same microvascular segment.

    Conclusions:

    • This innovative protocol offers a powerful approach to studying the cerebrovasculature, linking function to form at the microvascular level.
    • The methodology is adaptable for investigating other superficial microvascular beds beyond the pial circulation.