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Chongqing Medicine ; (36): 3468-3470, 2014.
Article in Chinese | WPRIM | ID: wpr-453978


Objective To evaluate the antimicrobial susceptibility of bacteria cultured on a Poloxamer 407(P407) thermosensi-tive in-situ gel .Methods The modified Kirby Bauer(K-B) disc diffusion method was adopted to determine the drug susceptibility of 9 kinds of bacterium isolated on the P407 and the Mueller Hinton(MH)agar culture medium, at the same time the diffusion rates of different antibacterial drugs on the P407 and the MH agar culture medium were compared;the sodium dodecylsulfate polyacrylam-ide gel electrophoresis(SDS-PAGE) was adopted to analyze the outer membrane proteins (OMPs) expression of Pseudomonas aeruginosa on these two kinds of culture medium .Results In the antimicrobial susceptibility tests, the inhibition zones on the P407 gel were found to be generally smaller than those on the MH agar.The difference in the diffusion rates of the antibacterial drugs on these two kinds of culture medium had no statistically significant difference (P> 0.05);the OMPs expression of Pseudomonas aeruginosa was similar to its growth expression on the P407 culture medium ,but different from its expression on the MH agar .Con-clusion P407 as an excipient of bacteria culture medium can be used in the screening test of the biofilm antimicrobial susceptibility .