Isolation of the first IMP-4 metallo-β-lactamase producing Klebsiella pneumoniae in Tianjin, China
This study shows for the first time the mechanism of carbapenem resistance of a Klebsiella pneumoniae clinical isolate TJ8 recovered from Tianjin medical university general hospital ,China. The modified Hodge test and EDTA synergy test were performed for the screening of carbapenemases and metallo-&...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Microbiologia
2012-09-01
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| Series: | Brazilian Journal of Microbiology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300010 |
| Summary: | This study shows for the first time the mechanism of carbapenem resistance of a Klebsiella pneumoniae clinical isolate TJ8 recovered from Tianjin medical university general hospital ,China. The modified Hodge test and EDTA synergy test were performed for the screening of carbapenemases and metallo-β-lactamases (MBLs), respectively. Polymerase chain reactions and DNA sequencing confirmed that the strain carried IMP-4 metallo-β-lactamase (MBL) , SHV-11 and TEM-1 β-lactamase. ClassⅠintegron was positive and gave a 3.0-kb PCR amplicon .IMP-4 was located in ClassⅠintegron 5'CS. The gene determinants were organized in the order of blaIMP-4-orfII-orfIII.In all, the results show that IMP-4 MBL production caused the TJ8 resistance to carbapenems. |
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| ISSN: | 1517-8382 1678-4405 |