Abstract
Objective: It was aimed to investigate the synergistic efficacy of antiviral drugs and antibiotics in combination for the treatment of Pseudomonas aeruginosa (P. aeruginosa), which is a common nosocomial infection agent.
Material and Method: Umifenovir (UMF) and Ribavirin (RBV) antibiotics as active ingredients of antiviral drugs, colistin and beta-lactamase inhibitor sulbactam were studied. Multi-Drug Resistant (MDR) and Colistin (COL) resistant P. aeruginosa clinical isolates were included in the study. On Pseudomonas aeruginosa, the minimal inhibition concentration of UMF, RBV, KOL and SUL separately with the microdilution method, and the synergistic activity of UMF -RBV and KOL- Sulbactam (SUL) were examined with the checkerboard synergy test.
Result and Discussion: In resistant strains, synergy and partial synergy occurred in combinations of RBV with COL and SUL (FIC = 0.375-0.75), whereas in the study conducted with ATCC 27853 strain, inferential and additive (FIC = 1.0-2.0) interactions were observed to be more intense. While synergy and partial synergies (FIC=0.53-0.75) were noted in combinations of UMF with KOL and SUL, an additive effect (FIC=1.0) was detected in ATCC 27853 strains. When the results were evaluated, it was seen that the use of UMF and RBV in combination with KOL and SUL was more effective on resistant strains, and the idea that the combinations could be used as an alternative option in the treatment of resistant nosocomial infections should be supported by future studies.