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Antimicrobial Agents and Chemotherapy, March 2008, p. 1167-1170, Vol. 52, No. 3
0066-4804/08/$08.00+0     doi:10.1128/AAC.00774-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Mechanisms of Resistance to Daptomycin in Enterococcus faecium{triangledown}

Clemente I. Montero,* Frida Stock, and Patrick R. Murray

Microbiology Service, Department of Laboratory Medicine, Warren G. Magnuson Clinical Center, National Institutes of Health, U.S. Department of Health and Human Services, 10 Center Drive, MSC 1508, Bethesda, Maryland 20892-1508

Received 15 June 2007/ Returned for modification 15 August 2007/ Accepted 26 December 2007

In this study, we investigated the clonal emergence of daptomycin-resistant Enterococcus faecium strains isolated from a patient with leukocyte adhesion deficiency syndrome. The resistance mechanism in these strains is independent of either equivalent point mutations previously described for Staphylococcus aureus or daptomycin inactivation mechanisms identified in soil bacteria.


* Corresponding author. Mailing address: Department of Laboratory Medicine, Clinical Center Building 10, Room 2C385, Bethesda MD 20892-1508. Phone: (301) 402-2144. Fax: (301) 402-1886. E-mail: monteroc{at}cc.nih.gov

{triangledown} Published ahead of print on 7 January 2008.


Antimicrobial Agents and Chemotherapy, March 2008, p. 1167-1170, Vol. 52, No. 3
0066-4804/08/$08.00+0     doi:10.1128/AAC.00774-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.




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