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[Microinfections and kidney lithiasis].

A Conte Visús1, F Grases Freixedas, A Costa-Bauzá

  • 1Hospital Son Dureta, Palma de Mallorca, España.

Archivos Espanoles De Urologia
|January 16, 2002
PubMed
Summary
This summary is machine-generated.

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Tiny bacteria, or nanobacteria, may contribute to calcium oxalate and uric acid stone formation, particularly in patients with low urinary pH and other health issues like stomach ulcers. Further research is needed to confirm their role.

Area of Science:

  • Urology
  • Microbiology
  • Biochemistry

Context:

  • Kidney stone formation is a significant clinical issue.
  • The role of microorganisms, particularly nanobacteria, in stone genesis is under investigation.
  • Previous studies have suggested potential links between specific bacteria and calculus development.

Purpose:

  • To investigate the presence and role of nanobacteria in kidney calculi (excluding struvite stones).
  • To analyze the characteristics of calculi containing detected microorganisms.
  • To explore potential associations between nanobacteria, urinary conditions, and other pathologies.

Summary:

  • Microorganisms, suspected to be nanobacteria, were detected in 0.5% of 1,000 analyzed calculi.
  • These calculi were associated with low urodynamic efficacy, acidic urine (pH < 5.5), and were primarily composed of calcium oxalate monohydrate or uric acid.

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  • Conventional urine cultures were negative, suggesting these microorganisms are difficult to culture using standard methods.

    • Impact:

    • The findings suggest nanobacteria may induce heterogeneous nucleation, contributing to calcium oxalate and uric acid stone formation.
    • This mechanism appears uncommon and linked to other lithogenic risk factors.
    • The co-occurrence of stomach ulcers and gingivitis in patients suggests these bacteria may be involved in multiple, seemingly unrelated pathologies, warranting further investigation.