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Antimicrob Agents Chemother. 2010 Jul;54(7):3061-4. doi: 10.1128/AAC.01834-09. Epub 2010 Apr 19.

Prevalence of fosfomycin resistance among CTX-M-producing Escherichia coli clinical isolates in Japan and identification of novel plasmid-mediated fosfomycin-modifying enzymes.

Author information

1
Department of Bacteriology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashi-Murayama, Tokyo 208-0011, Japan. wachino@nih.go.jp

Abstract

We evaluated the in vitro activity of fosfomycin against a total of 192 CTX-M beta-lactamase-producing Escherichia coli strains isolated in 70 Japanese clinical settings. Most of the isolates (96.4%) were found to be susceptible to fosfomycin. On the other hand, some of the resistant isolates were confirmed to harbor the novel transferable fosfomycin resistance determinants named FosA3 and FosC2, which efficaciously inactivate fosfomycin through glutathione S-transferase activity.

PMID:
20404116
PMCID:
PMC2897269
DOI:
10.1128/AAC.01834-09
[Indexed for MEDLINE]
Free PMC Article

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