Complex Ciprofloxacin Resistome Revealed by Screening a Pseudomonas aeruginosa Mutant Library for Altered Susceptibility

被引:127
作者
Breidenstein, Elena B. M. [1 ]
Khaira, Bhavjinder K. [1 ]
Wiegand, Irith [1 ]
Overhage, Joerg [1 ]
Hancock, Robert E. W. [1 ]
机构
[1] Univ British Columbia, Ctr Microbial Dis & Immun Res, Vancouver, BC V6T 1Z4, Canada
关键词
D O I
10.1128/AAC.00222-08
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Pseudomonas aeruginosa offers substantial therapeutic challenges due to its high intrinsic resistance to many antibiotics and its propensity to develop mutational and/or adaptive resistance. The PA14 comprehensive mutant library was screened for mutants exhibiting either two-to eightfold increased susceptibilities (revealing genes involved in intrinsic resistance) or decreased susceptibilities (mutational resistance) to the fluoroquinolone ciprofloxacin. Thirty-five and 79 mutants with increased and decreased susceptibilities, respectively, were identified, as confirmed by broth dilution.
引用
收藏
页码:4486 / 4491
页数:6
相关论文
共 18 条
[1]   Ciprofloxacin induction of a susceptibility determinant in Pseudomonas aeruginosa [J].
Brazas, MD ;
Hancock, REW .
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY, 2005, 49 (08) :3222-3227
[2]   Using microarray gene signatures to elucidate mechanisms of antibiotic action and resistance [J].
Brazas, MD ;
Hancock, REW .
DRUG DISCOVERY TODAY, 2005, 10 (18) :1245-1252
[3]   Role of lon, an ATP-dependent protease homolog, in resistance of Pseudomonas aeruginosa to ciprofloxacin [J].
Brazas, Michelle D. ;
Breidenstein, Elena B. A. ;
Overhage, Joerg ;
Hancock, Robert E. W. .
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY, 2007, 51 (12) :4276-4283
[4]   Defining the Pseudomonas aeruginosa SOS response and its role in the global response to the antibiotic ciprofloxacin [J].
Cirz, Ryan T. ;
O'Neill, Bryan M. ;
Hammond, Jennifer A. ;
Head, Steven R. ;
Romesberg, Floyd E. .
JOURNAL OF BACTERIOLOGY, 2006, 188 (20) :7101-7110
[5]  
DIMATATAC EL, 2003, PHIL J MICROBIOL INF, V32, P159
[6]   DNA gyrase, topoisomerase IV, and the 4-quinolones [J].
Drlica, K ;
Zhao, XL .
MICROBIOLOGY AND MOLECULAR BIOLOGY REVIEWS, 1997, 61 (03) :377-+
[7]   Gyrase inhibitors induce an oxidative damage cellular death pathway in Escherichia coli [J].
Dwyer, Daniel J. ;
Kohanski, Michael A. ;
Hayete, Boris ;
Collins, James J. .
MOLECULAR SYSTEMS BIOLOGY, 2007, 3 (1)
[8]   DEVELOPMENT OF RESISTANCE TO CIPROFLOXACIN IN NUTRIENT-RICH AND NUTRIENT-LIMITED GROWTH-CONDITIONS INVITRO BY PSEUDOMONAS-AERUGINOSA ISOLATES FROM PATIENTS WITH CYSTIC-FIBROSIS [J].
FERGUSON, MI ;
SCOTT, EM ;
COLLIER, PS .
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY, 1991, 35 (12) :2649-2651
[9]   Pathophysiology and management of pulmonary infections in cystic fibrosis [J].
Gibson, RL ;
Burns, JL ;
Ramsey, BW .
AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE, 2003, 168 (08) :918-951
[10]   Mechanisms of fluoroquinolone resistance [J].
Hooper, DC .
DRUG RESISTANCE UPDATES, 1999, 2 (01) :38-55