Machado Elisabete, Ferreira Joana, Novais Angela, Peixe Luísa, Cantón Rafael, Baquero Fernando, Coque Teresa M
Servicio de Microbiología, Hospital Universitario Ramón y Cajal. Carretera de Colmenar, km. 9.1. Madrid 28034, Spain.
Antimicrob Agents Chemother. 2007 Jun;51(6):2201-4. doi: 10.1128/AAC.01389-06. Epub 2007 Apr 2.
The variable presence of integrons among extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae species (0 to 66%) is described. Association between bla(ESBL) and integrons occurred when these are linked to specific ESBL-type genes (In60 bearing ISCR1 and bla(CTX-M-9)) or when ESBL genes were superimposed onto selected plasmids carrying integrons. Some integrons were identical to those found during decades worldwide, illustrating the preservation of the genetic elements carrying them.
研究描述了产超广谱β-内酰胺酶(ESBL)的肠杆菌科细菌中整合子的存在情况各异(0%至66%)。当bla(ESBL)与整合子与特定的ESBL型基因相关联(携带ISCR1和bla(CTX-M-9)的In60),或者当ESBL基因叠加在携带整合子的特定质粒上时,bla(ESBL)与整合子之间存在关联。一些整合子与全球数十年来发现的整合子相同,这表明携带它们的遗传元件得以保存。