College of Veterinary Medicine, National Reference Laboratory of Veterinary Drug Residues, South China Agricultural University, Guangzhou, China.
Antimicrob Agents Chemother. 2012 Apr;56(4):2135-8. doi: 10.1128/AAC.05104-11. Epub 2012 Jan 9.
The presence and characterization of plasmid-mediated fosfomycin resistance determinants among Escherichia coli isolates collected from pets in China between 2006 and 2010 were investigated. Twenty-nine isolates (9.0%) were positive for fosA3, and all of them were CTX-M producers. The fosA3 genes were flanked by IS26 and were localized on F2:A-:B- plasmids or on very similar F33:A-:B- plasmids carrying both bla(CTX-M-65) and rmtB. These findings indicate that the fosA3 gene may be coselected by antimicrobials other than fosfomycin.
研究了 2006 年至 2010 年间从中国宠物中分离的大肠杆菌中存在的质粒介导磷霉素耐药决定因素及其特征。29 株(9.0%)分离株呈 fosA3 阳性,均为 CTX-M 生产者。fosA3 基因位于 IS26 两侧,位于 F2:A-:B- 质粒或非常相似的 F33:A-:B- 质粒上,这些质粒携带 bla(CTX-M-65)和 rmtB。这些发现表明 fosA3 基因可能与除磷霉素以外的其他抗生素共同选择。