Iran J Vet Surg, Print ISSN: 2008-3033, Online ISSN: 2676-6299

Document Type : Original Article

Authors

1 Department of Micrbiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.

2 Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.

3 Department of Nanochemistry, Nanotechnology Research Institute, Urmia University, Urmia, Iran.

Abstract

Pseudomonas aeruginosa is one of the most important opportunistic pathogens in humans and animals. Natural antibacterial compounds like propolis are the best substitute for antibiotics. The aim of this study was to evaluate the antibacterial effect of Ethanolic extract of propolis, propolis nanoemulsion, and their combinations with ciprofloxacin in the treatment of experimental wound infection contaminated with Pseudomonas aeruginosa in rabbits. Propolis was obtained from a different region of Western Azerbaijan in the year 2018. Then the ethanol extract of propolis was prepared. And so, nanoemulsion of propolis was prepared. The broth microdilution method was used to determine the MIC of propolis and propolis nanoemulsion on P. aeruginosa. 28 rabbits used in 7 groups: Negative control (CO), Tween 20 (T), extract of propolis (P), nanoemulsion of propolis (NP), ciprofloxacin (C), ciprofloxacin+ extract of propolis (C + P), ciprofloxacin + nanoemulsion of propolis (C + NP). Full-thickness skin wound was created under general anesthesia and bacterial suspension (108 CFU/ml) was inoculated to each wound site. Macroscopic and microscopic characteristics and Superficial bacterial load of wounds were studied on days 7, 14, and 21. The number of bacteria in treatment groups was significantly lower than in negative control groups (p < 0.05). The macroscopic evaluation of wounds showed that C+P and C+NP enhanced wound closure in comparison with the negative control group and ciprofloxacin (p < 0.05). Histopathology assessment of the wound showed that the combination of C+P, and C+NP had a better and faster healing effect than the other groups, however, its difference was significant only when compared to CO, C, and T groups (p < 0.05). The results of the present study showed that a combination of ciprofloxacin + ethanolic extract of propolis and ciprofloxacin + propolis nanoemulsion had better therapeutic effects than either agent alone.

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Main Subjects

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