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Antimicrobial Agents and Chemotherapy, February 2007, p. 796-799, Vol. 51, No. 2
0066-4804/07/$08.00+0     doi:10.1128/AAC.01070-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Emergence and Dissemination of Enterobacteriaceae Isolates Producing CTX-M-1-Like Enzymes in Spain Are Associated with IncFII (CTX-M-15) and Broad-Host-Range (CTX-M-1, -3, and -32) Plasmids{triangledown}

Ângela Novais,1 Rafael Cantón,1,2 Raquel Moreira,1,3 Luísa Peixe,3 Fernando Baquero,1,2 and Teresa M. Coque1,2*

Hospital Universitario Ramón y Cajal, IMSALUD, Madrid, Spain,1 Unidad de Resistencia a Antibióticos y Virulencia Bacteriana asociada al Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain,2 REQUIMTE, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal3

Received 25 August 2006/ Returned for modification 21 September 2006/ Accepted 24 November 2006

The spread of CTX-M-1-like enzymes in Spain is associated with particular plasmids of broad-host-range IncN (blaCTX-M-32, blaCTX-M-1), IncL/M (blaCTX-M-1), and IncA/C2 (blaCTX-M-3) or narrow-host-range IncFII (blaCTX-M-15). The identical genetic surroundings of blaCTX-M-32 and blaCTX-M-1 and their locations on related 40-kb IncN plasmids indicate the in vivo evolution of this element.

* Corresponding author. Mailing address: Servicio de Microbiología, Hospital Universitario Ramón y Cajal, Carretera de Colmenar, km. 9.1, Madrid 28034, Spain. Phone: 34-913368330. Fax: 34-913368809. E-mail: mcoque.hrc{at}salud.madrid.org.

{triangledown} Published ahead of print on 4 December 2006.

Antimicrobial Agents and Chemotherapy, February 2007, p. 796-799, Vol. 51, No. 2
0066-4804/07/$08.00+0     doi:10.1128/AAC.01070-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



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