PMID- 18230690 OWN - NLM STAT- MEDLINE DCOM- 20080415 LR - 20141120 IS - 1460-2091 (Electronic) IS - 0305-7453 (Linking) VI - 61 IP - 4 DP - 2008 Apr TI - Clinical implications of vancomycin-resistant Enterococcus faecium (VRE) with VanD phenotype and vanA genotype. PG - 838-44 LID - 10.1093/jac/dkn025 [doi] AB - OBJECTIVES: To investigate the clinical implications of vancomycin-resistant Enterococcus faecium (VRE) with VanD phenotype and vanA genotype (VanD-vanA VRE). METHODS: We tested in vitro and in vivo efficacies of teicoplanin against VanD-vanA VRE strains. Change in teicoplanin MICs was monitored during incubation with teicoplanin. In vitro and in vivo time-kill assay and survival analysis using a mouse peritonitis model were performed. RESULTS: Teicoplanin MICs of VanD-vanA VRE strains increased to 128 mg/L within 48 h when they were cultured with 120 mg/L teicoplanin. In vitro and in vivo time-kill assay showed that VanD-vanA VRE strains were not eliminated by 120 mg/L teicoplanin in contrast to vancomycin-susceptible E. faecium and VanD-vanB strains. The survival rate of mice infected with VanD-vanA VRE strains treated with teicoplanin was comparable with that of untreated mice. CONCLUSION: Data suggest that teicoplanin would fail in the treatment of VanD type VRE infections if the strains contained the vanA gene, which cannot be detected in the clinical microbiology laboratory. FAU - Song, Jae-Hoon AU - Song JH AD - Division of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. jhsong@ansorp.org FAU - Ko, Kwan Soo AU - Ko KS FAU - Suh, Ji Yoeun AU - Suh JY FAU - Oh, Won Sup AU - Oh WS FAU - Kang, Cheol-In AU - Kang CI FAU - Chung, Doo Ryeon AU - Chung DR FAU - Peck, Kyong Ran AU - Peck KR FAU - Lee, Nam Yong AU - Lee NY FAU - Lee, Wee Gyo AU - Lee WG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080129 PL - England TA - J Antimicrob Chemother JT - The Journal of antimicrobial chemotherapy JID - 7513617 RN - 0 (Anti-Bacterial Agents) RN - 0 (Bacterial Proteins) RN - 0 (VanA ligase, Bacteria) RN - 61036-62-2 (Teicoplanin) RN - EC 6.1.- (Carbon-Oxygen Ligases) SB - IM MH - Animals MH - Anti-Bacterial Agents/pharmacology/*therapeutic use MH - Bacterial Proteins/*genetics MH - Blood/microbiology MH - Carbon-Oxygen Ligases/*genetics MH - Colony Count, Microbial MH - Enterococcus faecium/*drug effects/genetics/isolation & purification MH - Female MH - Gram-Positive Bacterial Infections/drug therapy/microbiology MH - Mice MH - Mice, Inbred ICR MH - Microbial Sensitivity Tests MH - Microbial Viability MH - Peritonitis/drug therapy/microbiology MH - Survival Analysis MH - Teicoplanin/*pharmacology/*therapeutic use MH - Vancomycin Resistance/*genetics EDAT- 2008/01/31 09:00 MHDA- 2008/04/16 09:00 CRDT- 2008/01/31 09:00 PHST- 2008/01/31 09:00 [pubmed] PHST- 2008/04/16 09:00 [medline] PHST- 2008/01/31 09:00 [entrez] AID - dkn025 [pii] AID - 10.1093/jac/dkn025 [doi] PST - ppublish SO - J Antimicrob Chemother. 2008 Apr;61(4):838-44. doi: 10.1093/jac/dkn025. Epub 2008 Jan 29.