[Pseudomonas aeruginosa bacteriophages isolated in a surgical hospital]

Area of Science:

• Microbiology
• Virology
• Bacteriology

Background:

• Pseudomonas aeruginosa is an opportunistic pathogen causing significant hospital-acquired infections.
• Bacteriophages (phages) are viruses that infect bacteria and are being explored as an alternative to antibiotics.

Purpose of the Study:

• To isolate and characterize bacteriophages targeting Pseudomonas aeruginosa from a clinical environment.
• To evaluate the lytic activity and spectrum of action of isolated phages and their combinations.

Main Methods:

• Isolation of phages from patient samples and hospital environmental surfaces.
• Characterization of phage morphology, titer, and lytic spectrum against P. aeruginosa strains.
• Assessment of a polyvalent phage combination's efficacy.

Main Results:

• 14 pure strains of P. aeruginosa bacteriophages were isolated from 90 specimens.
• The isolated phages demonstrated varying degrees of lytic activity.
• The most active phages lysed 71.1%, 63.1%, 59.2%, and 41.8% of 225 tested P. aeruginosa museum strains.
• A polyvalent phage combination was studied for its combined spectrum of action.

Conclusions:

• The study successfully isolated and characterized P. aeruginosa bacteriophages from a surgical hospital setting.
• The identified phages exhibit promising lytic activity, suggesting their potential for phage therapy against P. aeruginosa infections.
• Further research into polyvalent phage combinations could enhance therapeutic efficacy.