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Quantification of Urease Activity.

Shawn Richmond1, Alejandra Yep2

  • 1Department of Biological Sciences, California Polytechnic State University, San Luis Obispo, CA, USA.

Methods in Molecular Biology (Clifton, N.J.)
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Proteus mirabilis urease is a key virulence factor in urinary tract infections. New, inexpensive colorimetric methods are presented to easily quantify urease activity in cultures.

Keywords:
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Area of Science:

  • Microbiology
  • Biochemistry
  • Pathogenesis

Background:

  • Urease is a critical virulence factor in Proteus mirabilis infections.
  • Urease activity contributes to severe outcomes like urolithiasis and bacteremia in catheter-associated urinary tract infections (CAUTIs).

Purpose of the Study:

  • To develop and present simple, cost-effective colorimetric assays for quantifying urease activity.
  • To enable accurate measurement of urease in both pure and mixed microbial cultures.

Main Methods:

  • Development of two novel colorimetric methods for urease quantification.
  • Validation of assays for single-species and co-culture environments.

Main Results:

  • The described methods provide a straightforward and economical way to measure urease levels.
  • Assays are effective in quantifying urease activity in various culture conditions.

Conclusions:

  • These new colorimetric assays offer a practical tool for researchers studying Proteus mirabilis pathogenesis.
  • Accurate urease quantification can aid in understanding and potentially mitigating CAUTI complications.