Cochallenge Inoculation with Proteus mirabilis in a Murine Transurethral Urinary Tract Model of Ascending Infection

Area of Science:

• Microbiology
• Infectious Diseases
• Urology

Background:

• Proteus mirabilis is a significant cause of urinary tract infections (UTIs).
• Understanding its virulence factors is essential for developing effective therapies.
• In vivo models are needed to evaluate bacterial competitiveness.

Purpose of the Study:

• To describe methods for successful mouse transurethral inoculation.
• To establish a cochallenge infection model for Proteus mirabilis.
• To enable the determination of virulence factors conferring a competitive advantage.

Main Methods:

• Development of mouse transurethral inoculation technique.
• Construction and utilization of isogenic mutants of Proteus mirabilis.
• In vivo cochallenge infections to assess competitive fitness.

Main Results:

• Successful establishment of mouse transurethral inoculation and colonization.
• Demonstration of a cochallenge infection model for evaluating bacterial strains.
• Methodology enables assessment of competitive advantages conferred by specific factors.

Conclusions:

• The described methods facilitate the in vivo assessment of Proteus mirabilis virulence factors.
• This approach aids in identifying key determinants of UTI pathogenesis.
• The cochallenge model is valuable for future therapeutic target discovery.