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Title: Worldwide Diversity of Klebsiella pneumoniae That Produces beta-Lactamase bla(KPC-2) Gene
Authors: Cuzon, Gaelle
Naas, Thierry
Truong, HaVy
Villegas, Maria-Virginia
Wisell, Karin T.
Carmeli, Yehuda
Gales, Ana C. [UNIFESP]
Navon-Venezia, Shiri
Quinn, John P.
Nordmann, Patrice
Int Ctr Med Res & Training
Swedish Inst Infect Dis Control
Sourasky Med Ctr
Universidade Federal de São Paulo (UNIFESP)
John H Stroger Jr Hosp Cook Cty
Chicago Infect Dis Res Inst
Issue Date: 1-Sep-2010
Publisher: Centers Disease Control
Citation: Emerging Infectious Diseases. Atlanta: Centers Disease Control, v. 16, n. 9, p. 1349-1356, 2010.
Abstract: Klebsiella pneumoniae isolates that produce carbapenemases (KPCs) are rapidly disseminating worldwide. To determine their genetic background, we investigated 16 bla(KPC-2)-harboring K. pneumoniae isolates from 5 countries. the isolates were multidrug resistant, possessed the bla(KPC-2) gene, and differed by additional beta-lactamase content. They harbored a naturally chromosome-encoded bla gene (bla(SHV-1) [12.5%], bla(SHV-11) [68.7%], or bla(OKP-A/B) [18.8%]) and several acquired and plasmid-encoded genes (bla(TEM-1) [81.3%], bla(CTX-M-2) [31.3%], bla(CTX-M-12) [12.5%], bla(CTX-M-15) [18.7%], and bla(OXA-9) [37.5%]). the bla(KPC-2) gene was always associated with 1 of the Tn4401 isoforms (a, b, or c). Tn4401 was inserted on different-sized plasmids that belonged to different incompatibility groups. Several bla(KPC)-containing K. pneumoniae clones were found: 9 different pulsotypes with 1 major (sequence type 258) and 7 minor distinct allelic profiles. Different clones harboring different plasmids but having identical genetic structure, Tn4401, could be at the origin of the worldwide spread of this emerging resistance gene.
ISSN: 1080-6040
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