肠出血性大肠杆菌O157:H7和山梨醇发酵O157:NM临床分离株中碲酸盐抗性的表型和分子分析。
Phenotypic and molecular analysis of tellurite resistance among enterohemorrhagic Escherichia coli O157:H7 and sorbitol-fermenting O157:NM clinical isolates.
作者信息
Bielaszewska Martina, Tarr Phillip I, Karch Helge, Zhang Wenlan, Mathys Werner
机构信息
Institut für Hygiene, Universitätsklinikum Münster, Robert Koch Str. 41, 48149 Münster, Germany.
出版信息
J Clin Microbiol. 2005 Jan;43(1):452-4. doi: 10.1128/JCM.43.1.452-454.2005.
Abstract
A total of 66 (98.5%) of 67 enterohemorrhagic Escherichia coli (EHEC) O157:H7 strains had increased potassium tellurite (Te) MICs (32 to 1,024 microg/ml), grew on Te-containing media, and possessed Te resistance (ter) genes, whereas 83 (96.5%) of 86 sorbitol-fermenting (SF) EHEC O157:NM strains had Te MICs of </=4 microg/ml, did not grow on Te-containing media, and lacked ter genes. Optimal detection of SF EHEC O157:NM strains requires Te-independent strategies.
摘要
67株肠出血性大肠杆菌（EHEC）O157:H7菌株中，共有66株（98.5%）的亚碲酸钾（Te）最低抑菌浓度（MIC）升高（32至1024微克/毫升），能在含Te的培养基上生长，并拥有Te抗性（ter）基因；而86株山梨醇发酵（SF）EHEC O157:NM菌株中，有83株（96.5%）的Te MIC≤4微克/毫升，不能在含Te的培养基上生长，且缺乏ter基因。对SF EHEC O157:NM菌株的最佳检测需要不依赖Te的策略。
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