In vivo deletion of the methicillin resistance mec region from the chromosome of Staphylococcus aureus strains

被引:34
作者
Deplano, A
Tassios, PT
Glupczynski, Y
Godfroid, E
Struelens, MJ
机构
[1] Free Univ Brussels, Erasme Hosp, Dept Microbiol, B-1070 Brussels, Belgium
[2] Univ Athens, Sch Med, Dept Microbiol, GR-11527 Athens, Greece
[3] Clin Univ UCL Mont Godinne, Dept Microbiol, Yvoir, Belgium
[4] ULB, Nivelles, Belgium
关键词
D O I
10.1093/jac/46.4.617
中图分类号
R51 [传染病];
学科分类号
100401 ;
摘要
Two sets of Staphylococcus aureus isolates recovered from two patients exhibited similar susceptibility profiles except for oxacillin susceptibility (MSSA) or resistance (MRSA). SmaI macrorestriction and inter-IS256 PCR analysis showed patterns closely related to the Belgian epidemic MRSA clone 1 in each pair of MSSA/MRSA strains. Loss of one large SmaI DNA fragment and concurrent gain of a smaller fragment in the MSSA isolates was observed. The mecA sequence present in the MRSA was absent in the MSSA variant. Therefore, in vivo deletion of the mec region may occur in some lineages of S. aureus more frequently than previously thought.
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收藏
页码:617 / 619
页数:3
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