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KMID : 1007520180270041239
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Food Science and Biotechnology
2018 Volume.27 No. 4 p.1239 ~ p.1244
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Combined effect of bacteriophage and antibiotic on the inhibition of the development of antibiotic resistance in Salmonella typhimurium
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Petsong Kantiya
Uddin Md Jalal
Vongkamjan Kitiya
Ahn Ju-Hee
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Abstract
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This study was designed to evaluate the combined effects of bacteriophage and antibiotic on the reduction of the development of antibiotic-resistance in Salmonella typhimurium LT2. The susceptibilities of S. typhimurium to ciprofloxacin and erythromycin were increased when treated with bacteriophages, showing more than 10% increase in clear zone sizes and greater than twofold decrease in minimum inhibitory concentration values. The growth of S. typhimurium was effectively inhibited by the combination of bacteriophage P22 and ciprofloxacin. The combination treatment effectively reduced the development of antibiotic resistance in S. typhimurium. The relative expression levels of efflux pump-related genes (acrA, acrB, and tolC) and outer membrane-related genes (ompC, ompD, and ompF) were decreased at all treatments. This study provides useful information for designing new antibiotic therapy to control antibiotic-resistant bacteria.
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KEYWORD
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Bacteriophage, Salmonella Antibiotic, Ciprofloxacin, Disk diffusion assay
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