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Updated: Jul 12, 2026

Microfluidic Picoliter Bioreactor for Microbial Single-cell Analysis: Fabrication, System Setup, and Operation
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[Nanobacteria. An experimental neo-lithogenesis model].

E García Cuerpo1, E Olavi Kajander, N Ciftçioglu

  • 1Servicio de Urología, Hospital Ramón y Cajal, Universidad de Alcalá, Madrid, España.

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Summary

This study demonstrates successful induction of kidney stones in rats using nanobacteria via percutaneous renal puncture. This novel experimental model facilitates lithogenesis research without invasive surgery or antibiotics.

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Area of Science:

  • Biomineralization research
  • Experimental nephrology
  • Microbiology

Context:

  • Investigating the mechanisms of kidney stone formation (lithogenesis).
  • Developing minimally invasive experimental models for urolithiasis research.
  • Exploring the role of nanobacteria in biomineralization and calculus development.

Purpose:

  • To establish an experimental model for studying lithogenesis using percutaneous renal puncture.
  • To assess the feasibility of inducing kidney stone formation without laparotomy or antibiotics.
  • To evaluate the role of nanobacteria in the development of pyelocaliceal lithiasis.

Summary:

  • Four Brown-Norway rats were used; three received varying doses of nanobacteria inoculum, and one served as a control.
  • Percutaneous renal puncture was performed without laparotomy or antibiotic coverage.
  • Analytical and radiological data confirmed the development of obstructive pyelocaliceal lithiasis in two rats inoculated with nanobacteria.

Impact:

  • Successfully established a novel experimental model for lithogenesis research.
  • Demonstrated the potential of nanobacteria in inducing kidney stone formation.
  • Provides a platform for further investigation into the etiological factors and treatment strategies for kidney stones.