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A murine model for catheter-associated candiduria.

Xiabo Wang1,2, Bettina C Fries1,2

  • 1Department of Medicine at Albert Einstein College of Medicine, Bronx, NY 10461, USA.

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|May 21, 2011
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Researchers developed a mouse model for candiduria (Candida in urine) using indwelling catheters. This model shows biofilm formation contributes to persistent fungal infections, aiding further study.

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Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Animal Models

Background:

  • Candiduria, Candida in urine, is common in hospitalized patients with urinary catheters.
  • Existing animal models for candiduria are limited, hindering research into this prevalent condition.
  • Candida in urine doesn't always indicate infection; it can be a commensal organism.

Purpose of the Study:

  • To establish a reliable murine model for studying candiduria.
  • To investigate the role of biofilm formation in catheter-related candiduria.
  • To compare key aspects of candiduria between the murine model and human patients.

Main Methods:

  • Indwelling urinary catheters were used to establish candiduria in mice.
  • Biofilm formation on catheters was assessed.
  • Fungal burden and leukocyturia were quantified in urine samples.
  • Comparisons were made with human candiduria data.

Main Results:

  • A mouse model successfully demonstrated persistent candiduria and catheter-associated biofilm formation.
  • Biofilm formation was confirmed as a contributing factor to persistent candiduria.
  • Significant differences were observed between the mouse model and human candiduria, including higher leukocyturia in mice and lower fungal burden.

Conclusions:

  • The developed murine model is suitable for studying catheter-related candiduria and the impact of biofilms.
  • Findings highlight crucial differences between the murine model and human candiduria, particularly fungal burden and host response.
  • These distinctions are vital for interpreting host-pathogen interaction studies using this animal model.