Related Experiment Video
Updated: Aug 11, 2026

One-day Workflow Scheme for Bacterial Pathogen Detection and Antimicrobial Resistance Testing from Blood Cultures
Published on: July 9, 2012
[Response to antibiotics of Proteus strains isolated from different types of clinical material]
Abstract:
The data on the study of the antibiotic response to 42 Proteus strains isolated from different sources in the hospitals of Kharkov are presented. The isolates belonged to P. mirabilis and P. vulgaris. Many strains were resistant to gentamicin, ampicillin and carbenicillin irrespective of the isolation source. 58.0 and 90.3 per cent of the strains isolated from patients with intestinal infections, 66.6 and 100 per cent of the strains isolated from patients with otitis, 33.3 and 66.6 per cent of the strains isolated from patients with bronchopulmonary affections and 100 and 100 per cent of the strains isolated from patients with urological diseases were resistant to gentamicin and carbenicillin, respectively. As for ampicillin, the respective figures were 74.2, 66.6, 66.6 and 100 per cent. All the strains of P. vulgaris isolated from patients with otitis, urological diseases and bronchopulmonary affections were resistant to ampicillin. The MIC of carbenicillin for all the strains except 4 indole-positive strains of P. vulgaris isolated from the faeces and bronchial excreta was much higher than the borderline values.
Insights
Proteus strains show high resistance to common antibiotics like gentamicin, ampicillin, and carbenicillin. This widespread antibiotic resistance poses a significant challenge in clinical settings.
Area of Science:
- Microbiology
- Infectious Diseases
- Pharmacology
Background:
- Antibiotic resistance in bacterial pathogens is a growing global health concern.
- Proteus species are opportunistic pathogens frequently associated with hospital-acquired infections.
Purpose of the Study:
- To investigate the antibiotic susceptibility patterns of Proteus strains isolated from various clinical sources.
- To determine the prevalence of resistance to gentamicin, ampicillin, and carbenicillin in Proteus mirabilis and Proteus vulgaris.
Main Methods:
- Isolation and identification of 42 Proteus strains from different hospital sources in Kharkov.
- Antibiotic susceptibility testing using standard microbiological methods.
- Determination of Minimum Inhibitory Concentrations (MIC) for carbenicillin.
Main Results:
- A high proportion of Proteus strains exhibited resistance to gentamicin (58.0-100%) and carbenicillin (66.6-100%) across different infection types.
- Ampicillin resistance was also prevalent, particularly in Proteus vulgaris strains from otitis, urological diseases, and bronchopulmonary affections (66.6-100%).
- Most strains showed MIC values for carbenicillin significantly above borderline, indicating substantial resistance.
Conclusions:
- The study highlights a significant level of antibiotic resistance in Proteus strains prevalent in Kharkov hospitals.
- Resistance to gentamicin, ampicillin, and carbenicillin is widespread, irrespective of the isolation source.
- These findings underscore the need for continuous monitoring of antibiotic resistance and the development of effective treatment strategies against Proteus infections.
Related Concept Videos
Antibiotic Selection
Urine Studies II: Urine Culture and Sensitivity Test
Development of Antibiotic Resistance
Automated Microbial Diagnostics
Mechanism of Antibiotic Resistance in MRSA
Clinical Significance of Antibiotic Resistance

