Antimicrobial activity evaluation and comparison of methods of susceptibility for Klebsiella pneumoniae carbapenemase (KPC)-producing Enterobacter spp. isolates
Braz. j. microbiol
;
48(3): 509-514, July-Sept. 2017. tab
Article
in English
| LILACS
| ID: biblio-889143
ABSTRACT
Abstract The production of KPC (Klebsiella pneumoniae carbapenemase) is the major mechanism of resistance to carbapenem agents in enterobacterias. In this context, forty KPC-producing Enterobacter spp. clinical isolates were studied. It was evaluated the activity of antimicrobial agents polymyxin B, tigecycline, ertapenem, imipenem and meropenem, and was performed a comparison of the methodologies used to determine the susceptibility broth microdilution, Etest® (bioMérieux), Vitek 2® automated system (bioMérieux) and disc diffusion. It was calculated the minimum inhibitory concentration (MIC) for each antimicrobial and polymyxin B showed the lowest concentrations for broth microdilution. Errors also were calculated among the techniques, tigecycline and ertapenem were the antibiotics with the largest and the lower number of discrepancies, respectively. Moreover, Vitek 2® automated system was the method most similar compared to the broth microdilution. Therefore, is important to evaluate the performance of new methods in comparison to the reference method, broth microdilution.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Bacterial Proteins
/
Beta-Lactamases
/
Klebsiella Infections
/
Microbial Sensitivity Tests
/
Enterobacteriaceae Infections
/
Klebsiella pneumoniae
/
Anti-Bacterial Agents
Limits:
Humans
Language:
English
Journal:
Braz. j. microbiol
Journal subject:
Microbiology
Year:
2017
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Estadual de LondrinaDepartamento de Microbiologia/BR
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