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赫氏埃希菌和阴沟肠杆菌环境分离株的金属积累及钒诱导的多药耐药性

Metal accumulation and vanadium-induced multidrug resistance by environmental isolates of Escherichia hermannii and Enterobacter cloacae.

作者信息

Hernández A, Mellado R P, Martínez J L

机构信息

Departamento de Biotecnología Microbiana, Centro Nacional de Biotecnología (CSIC), Campus Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.

出版信息

Appl Environ Microbiol. 1998 Nov;64(11):4317-20. doi: 10.1128/AEM.64.11.4317-4320.1998.

Abstract

Contaminated soils from an oil refinery were screened for the presence of microorganisms capable of accumulating either nickel, vanadium, or both metals. Three strains of bacteria that belonged to the family Enterobacteriaceae were selected. Two of them were Escherichia hermannii strains, and outer membrane profile (OMP) analysis showed that they were similar to a strain of clinical origin; the other one was an Enterobacter cloacae strain that differed from clinical isolates. The selected bacteria accumulated both nickel and vanadium. Growth in the presence of vanadium induced multidrug resistance phenotypes in E. hermannii and E. cloacae. Incubation with this metal changed the OMP profile of E. hermannii but did not produce variations in the expression of the major OMPs of E. cloacae.

摘要

对一家炼油厂受污染的土壤进行筛选,以检测是否存在能够积累镍、钒或两种金属的微生物。挑选出了三株属于肠杆菌科的细菌。其中两株是赫氏埃希菌菌株,外膜图谱(OMP)分析表明它们与一株临床来源的菌株相似;另一株是阴沟肠杆菌菌株,与临床分离株不同。所选细菌能同时积累镍和钒。在钒存在的情况下生长会诱导赫氏埃希菌和阴沟肠杆菌产生多重耐药表型。与这种金属一起培养会改变赫氏埃希菌的OMP图谱,但不会使阴沟肠杆菌主要OMP的表达产生变化。

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