کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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3398952 | 1222354 | 2006 | 9 صفحه PDF | دانلود رایگان |

ABSTRACTIn 2002, 119 isolates of the Enterobacter cloacae complex were collected randomly from 11 German laboratories nationwide. Antibiotic susceptibilities were tested by disk-diffusion tests according to CLSI guidelines, and MICs were determined using Etests. PCRs were performed to amplify all TEM and SHV, and most CTXM and OXA β-lactamase genes. PCR products were sequenced to identify the precise extended spectrum β-lactamase (ESBL) types. Isoelectric focusing (IEF) and PM/PML Etests were used to confirm production of the respective ESBLs. According to susceptibility tests and CLSI criteria, 49 (40%) isolates were resistant to extended-spectrum cephalosporins. Seven (5.8%) isolates were positive in at least one of the PCR assays. Sequencing identified production of TEM-1 β-lactamase genes by three (2.9%) isolates, and ESBL genes of the CTXM and SHV β-lactamase families by five (4.2%) isolates. IEF confirmed the production of β-lactamases in the expected pI ranges of the respective ESBLs, and four of the five ESBL-producers were detected using the PM/PML Etest. All ESBL-producing isolates showed co-resistance to sulphonamides.
Journal: Clinical Microbiology and Infection - Volume 12, Issue 4, April 2006, Pages 322–330