Aarestrup F M
Danish Veterinary Laboratory, DK-1790 Copenhagen, Denmark.
J Clin Microbiol. 2000 Jul;38(7):2774-7. doi: 10.1128/JCM.38.7.2774-2777.2000.
Glycopeptide-resistant enterococci (GRE) from broilers and pigs were characterized to investigate the background for the persistence of GRE in pig herds. All porcine isolates belonged to closely related pulsed-field gel electrophoretic (PFGE) types, with the ermB and vanA genes located on the same transferable genetic element. Broiler isolates belonged to different PFGE types. The persistence of GRE in Danish pig herds after the ban of glycopeptides may be explained by the genetic link between ermB and vanA and coselection by use of macrolides for treatment and growth promotion.
对来自肉鸡和猪的耐糖肽肠球菌(GRE)进行了特征分析,以调查GRE在猪群中持续存在的背景。所有猪源分离株都属于密切相关的脉冲场凝胶电泳(PFGE)类型,ermB和vanA基因位于同一可转移遗传元件上。肉鸡分离株属于不同的PFGE类型。糖肽类药物被禁用后,丹麦猪群中GRE的持续存在可能是由于ermB和vanA之间的遗传联系以及使用大环内酯类药物进行治疗和促进生长所导致的共选择作用。