Plasmid-mediated carbapenem-hydrolyzing enzyme KPC-2 and ArmA 16S rRNA methylase conferring high-level aminoglycoside resistance in carbapenem-resistant Enterobacter cloacae in China

被引:56
作者
Wu, Qiong [1 ]
Liu, Qingzhong [1 ]
Han, Lizhong [1 ]
Sun, Jingyong [1 ]
Ni, Yuxing [1 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Med, Ruijin Hosp, Dept Clin Microbiol, Shanghai 200025, Peoples R China
关键词
Carbapenem; Aminoglycoside; Resistance; 16S rRNA methylase; Enterobacter cloacae; BETA-LACTAMASE; KLEBSIELLA-PNEUMONIAE; TIGECYCLINE; EMERGENCE; IMIPENEM;
D O I
10.1016/j.diagmicrobio.2009.10.003
中图分类号
R51 [传染病];
学科分类号
100401 ;
摘要
The emergence and spread of carbapenem-resistant Enterobacteriaceae in the world are a major concern. We investigated 5 isolates of Enterobacter cloacae that were resistant to all clinically available antimicrobial agents, except polymyxin B. The MICs of imipenem and aminoglycosides were >32 and >256 mg/L. respectively. All of the isolates produced 5 extended-spectrum beta-lactamase (ESBLs) with pIs of 5.4 (TEM-1), 6.7 (KPC-2), 8.2 (SHV-12), 8.4 (CTX-M-14), and ArmA 16S rRNA methylase. bla(KPC-2) was located on a large nonconjugative plasmid, whereas armA was located on another conjugative plasmid. Although carbapenem-resistant Enterobacteriaceae remains rare, the emergence of this group of organism merits monitoring. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码:326 / 328
页数:3
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