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Microstructure of gallstones.

J M Been, P M Bills, D Lewis

    Gastroenterology
    |March 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Gallstone composition analysis reveals a biphasic growth mechanism. Calcium salts initiate stone formation, followed by alternating layers of calcium bilirubinate and cholesterol, potentially damaging gallbladder walls.

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    Area of Science:

    • Biochemistry
    • Materials Science
    • Pathology

    Background:

    • Gallstones are complex structures with varied compositions.
    • Understanding gallstone formation is crucial for clinical management.

    Purpose of the Study:

    • To investigate the material composition and structural arrangement within gallstones.
    • To elucidate the mechanism of gallstone formation and growth patterns.

    Main Methods:

    • Electron microprobe analysis
    • X-ray diffraction
    • Infrared spectroscopy

    Main Results:

    • Gallstones exhibit central calcium phosphate/carbonate deposits mixed with a pigmented phase (copper, protein).
    • Layers of calcium bilirubinate and cholesterol surround central deposits in some stones.

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  • A biphasic deposition mechanism involving alternating calcium salts and lipids is proposed, initiated by calcium salt precipitation.

    • Conclusions:

    • Gallstone formation follows a biphasic mechanism with sequential deposition of calcium salts and lipids.
    • The observed layer sequence suggests potential gallbladder wall damage induced by calcium salt deposits.