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[A method for determining the sensitivity of the causative agents of suppurative infection to iodopiron]
Abstract:
Bacterial suspensions of cultures (10(7) PFU) of pathogenic Staphylococcus, vulgar Proteus and pyocyanic bacterium are resistant to 2.9-46.87 mg per disc of iodopyron in 100% of cases. Sensitivity of 32 and 100% of cultures of pyocyanic bacteria (of 25 under study) being in the suspension (10(5) PFU) to 11.71 and 23.43-9.375 mg of idopyron, respectively, in a hole has been established. To determine sensitivity of pyocyanic bacteria to iodopyron it is suggested to use the procedure of adding of 11.71 mg of the preparation (water solution) to the holes in MPA.
Insights
Pathogenic bacteria like Staphylococcus and Proteus show resistance to iodopyron. However, pyocyanic bacteria exhibit sensitivity to iodopyron at specific concentrations, suggesting a targeted application method.
Area of Science:
- Microbiology
- Antimicrobial Susceptibility Testing
Background:
- Pathogenic bacteria, including Staphylococcus, Proteus, and Pseudomonas aeruginosa (pyocyanic bacterium), pose significant health risks.
- Antimicrobial resistance is a growing global concern, necessitating the evaluation of new therapeutic agents.
- Iodopyron is a compound being investigated for its potential antimicrobial properties.
Purpose of the Study:
- To assess the in vitro susceptibility of pathogenic bacterial cultures to iodopyron.
- To determine the efficacy of iodopyron against pyocyanic bacteria at varying concentrations.
- To propose an optimized method for evaluating pyocyanic bacteria sensitivity to iodopyron.
Main Methods:
- Bacterial suspensions of Staphylococcus, Proteus, and pyocyanic bacteria were prepared at concentrations of 10(7) PFU/mL.
- Disk diffusion assays were performed using iodopyron discs (2.9-46.87 mg).
- Broth microdilution or agar well diffusion assays were conducted with lower concentrations of iodopyron (11.71-23.43 mg) against pyocyanic bacteria.
Main Results:
- 100% of Staphylococcus and Proteus cultures tested were resistant to iodopyron discs (2.9-46.87 mg).
- 32% of pyocyanic bacteria cultures showed sensitivity to 11.71 mg of iodopyron in agar wells.
- 100% of pyocyanic bacteria cultures were sensitive to 23.43-9.375 mg of iodopyron in agar wells.
Conclusions:
- Iodopyron demonstrates limited efficacy against common Gram-negative and Gram-positive pathogens like Staphylococcus and Proteus.
- Pyocyanic bacteria (Pseudomonas aeruginosa) exhibit concentration-dependent sensitivity to iodopyron.
- A modified agar well diffusion method using 11.71 mg of iodopyron in Mueller-Hinton agar (MPA) is proposed for reliable sensitivity testing of pyocyanic bacteria.