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Related Experiment Videos

Scanning electron microscopy detects bacteria within infection stones.

H Takeuchi, H Takayama, T Konishi

    The Journal of Urology
    |July 1, 1984
    PubMed
    Summary

    Bacteria are present within infection stones, indicating their role in both the initial formation and growth of these stones. This includes urea-splitting bacteria like Proteus mirabilis and Pseudomonas aeruginosa.

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    Area of Science:

    • Microbiology
    • Urology
    • Crystallography

    Background:

    • Infection stones are a type of urinary calculus associated with microbial activity.
    • Understanding the precise role and location of bacteria within these stones is crucial for effective treatment and prevention.

    Purpose of the Study:

    • To investigate the viability and spatial distribution of bacteria within infection stones.
    • To determine the types of bacteria commonly found in infection stones and their relationship with stone composition.

    Main Methods:

    • Microscopic examination of infection stones to identify bacterial presence and morphology.
    • Analysis of stone composition (apatite and struvite crystals) in relation to bacterial location.

    Main Results:

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    • Urea-splitting bacteria, including Proteus mirabilis and Pseudomonas aeruginosa, were frequently identified in infection stones.
    • Bacterial impressions and bodies were observed within the crystal matrix (apatite and struvite) from the stone's nucleus to its periphery.
    • Non-urea-splitting bacteria, such as Streptococcus faecalis, were also found, suggesting secondary infections.

    Conclusions:

    • Bacteria are integral to the formation and growth of infection stones, not merely inhabitants.
    • The findings support the hypothesis that bacteria play a role in the initiation of stone formation.
    • Antibiotic treatment may alter bacterial flora, potentially leading to superimposed infections by non-urea-splitting bacteria.