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Drug Resistance Genes in Imipenem-resistant Pseudomonas aeruginosa

Hao Qiao-guang

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Abstract

OBJECTIVE To study the drug resistance genes in imipenem-resistant Pseudomonas aeruginosa.METHODS Five main drug resistance genes:IMP,VIM,SPM and GIM which are pertinent with metal β-lactamase and outer membrane protein oprD2 gene were analyzed using PCR method.RESULTS The oprD2 genes in 48 strains of imipenem-resistant P.aeruginosa were negative,and in 14 strains were positive from all 62 strains tested.There were 16 strains with positive IMP type and 5 strains with positive VIM type metal enzyme genes positive,7 metal enzymes producing strains were with negative oprD2 gene.The SPM and GIM metal enzyme genes detected were all negative.CONCLUSIONS The loss of outer membrane protein oprD2 gene is the main mechanism of imipenem resistance in P.aeruginosa in Tai′an area.

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OBJECTIVE To study the drug resistance genes in imipenem-resistant Pseudomonas aeruginosa.METHODS Five main drug resistance genes:IMP,VIM,SPM and GIM which are pertinent with metal β-lactamase and outer membrane protein oprD2 gene were analyzed using PCR method.RESULTS The oprD2 genes in 48 strains of imipenem-resistant P.aeruginosa were negative,and in 14 strains were positive from all 62 strains tested.There were 16 strains with positive IMP type and 5 strains with positive VIM type metal enzyme genes positive,7 metal enzymes producing strains were with negative oprD2 gene.The SPM and GIM metal enzyme genes detected were all negative.CONCLUSIONS The loss of outer membrane protein oprD2 gene is the main mechanism of imipenem resistance in P.aeruginosa in Tai′an area.

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Available abstract

OBJECTIVE To study the drug resistance genes in imipenem-resistant Pseudomonas aeruginosa.METHODS Five main drug resistance genes:IMP,VIM,SPM and GIM which are pertinent with metal β-lactamase and outer membrane protein oprD2 gene were analyzed using PCR method.RESULTS The oprD2 genes in 48 strains of imipenem-resistant P.aeruginosa were negative,and in 14 strains were positive from all 62 strains tested.There were 16 strains with positive IMP type and 5 strains with positive VIM type metal enzyme genes positive,7 metal enzymes producing strains were with negative oprD2 gene.The SPM and GIM metal enzyme genes detected were all negative.CONCLUSIONS The loss of outer membrane protein oprD2 gene is the main mechanism of imipenem resistance in P.aeruginosa in Tai′an area.

Key concepts: Imipenem, Pseudomonas aeruginosa, Microbiology, Drug resistance, Gene, Bacterial outer membrane, Biology, Bacteria

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