Multiresistant Genes of Pseudomonas aeruginosa in Different Areas: An Epidemiological Study / 中华医院感染学杂志

ABSTRACT

OBJECTIVE To investigate the distribution of multiresistant genes produced by Pseudomonas aeruginosa(PAE) isolated from different areas.METHODS Antimicrobial sensitivities of 104 strains of PAE to 13 kinds of antibiotics were determined by K-B method,of which 16 kinds of drug resistant genes were tested by polymerase chain reaction(PCR) and analyzed by clustering method of multi-molecular markers.RESULTS The resistant detective rates to imipenam in three areas were respectively 51.3%,80%,and 100% and that to the third generation cephalosporin were moving from 48.2% to 100%.The detective rate of oprD2 absent was 90-100%.There were similar phenomena of prevalence between some strains in these areas.oprD2 Absent was the main mechanism of prevailing strains in Shaoxing,however,clone strains in Huzhou were caused by TEM,oprD2 absent,aac(3)-Ⅱ,ant(3″)-Ⅰ and qacE△1.CONCLUSIONS There is a multiresistance to antibiotics in PAE isolated from different areas and the phenomena of prevalence are occurred in these areas,but the mechanisms of drug resistant are different.