The clinical use of a fast screening test based on technology of capillary zone electrophoresis (CZE) for identification of Escherichia coli infection in biological material

Med Sci Monit. 2011 Oct;17(10):MT91-6. doi: 10.12659/msm.881967.

Abstract

Background: Escherichia coli is a Gram-negative bacterium which is a basic, symbiotic element of the physiological flora of the large intestine of humans and warm-blooded animals. However, in specific cases it may become a very dangerous pathogen (eg, diarrhoea, infection of the urinary tract, lungs, and generalized infections). Its early detection, as a cause of infectious disease, helps to achieve optimal treatment results; however, classical microbiological tests require at least 24 hours from sample taking to diagnosis.

Material/methods: We present a unique solution based on CZE technologies enabling identification of E. coli presence in studied sample within half an hour. Altogether, 30 E. coli-infected wounds and ulcerations were examined, comparing the results obtained by classical culture method with the result of capillary zone electrophoresis (CZE) electropherogram.

Results: The method, which does not require any preparation of the sample, achieved 86.7% sensitivity and 85%specificity in the examined clinical material (infections of surgical wounds).

Conclusions: The obtained results enable reliable, very fast testing for E. coli as a pathogen.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Boric Acids
  • Edetic Acid
  • Electrophoresis, Capillary / methods*
  • Escherichia coli Infections / diagnosis*
  • Humans
  • Sensitivity and Specificity
  • Surgical Wound Infection / diagnosis
  • Surgical Wound Infection / microbiology*
  • Tromethamine

Substances

  • Boric Acids
  • Tris-borate-EDTA buffer
  • Tromethamine
  • Edetic Acid