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首页> 外文期刊>Journal of Rural and Remote Environmental Health >ASSOCIATION OF METAL TOLERANCE WITH MULTIDRUG RESISTANCE AMONG BACTERIA ISOLATED FROM SEWAGE
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ASSOCIATION OF METAL TOLERANCE WITH MULTIDRUG RESISTANCE AMONG BACTERIA ISOLATED FROM SEWAGE

机译：污水分离细菌中金属耐受性与多药耐药性的关系

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Objectives: Sewage effluent from the sewage treatment plant of the University of Nigeria, Nsukka, was analyzed for the presence of metal and non-metal ions and for the presence of metal tolerant and drug resistant bacteria. Methods: Plasmid mediation of metal tolerance and multiple drug resistance was demonstrated by sodium dodecyl sulphate (SDS) curing and direct cell transfer experiments. Results: Ions found present (in mgL-1) include, among others, Mercury (50.148), Lead (41.906), Sodium (907.240), and Potassium (700.00). Bacterial populations isolated from the effluent were members of the genera Enterobacter (n = 15), Escherichia (n = 18), Achromobacter (n = 18), Acinetobacter (n = 25) Klebsiella (n = 12), Pseudomonas (n = 08), Proteus (n = 20) and Serratia (n = 10). Enterobacter spp showed high percentage tolerance of 73% to Lead. Species of Acinetobacter and Pseudomonas showed, to varying degrees, across – the – board tolerance to all the individual salts. Also an across-the-board resistance of between 25 – 75% and 8.3 – 41.7% to the test drugs was exhibited by Pseudomonas and Klebsiella spp respectively. Sixty per cent each of Acinetobacter and Klebsiella spp lost both metal tolerance and drug resistance attributes simultaneously following the SDS curing protocol. Overall percentage loss of both characteristics was 57.1%. Acquisition of metal tolerance and multidrug resistance by recipients was total (100%) and so was the subsequent loss of these capabilities following SDS treatment of these recipients. Discussion: The public health hazard derivable from these findings is discussed.
机译：目的：分析尼日利亚Nsukka大学污水处理厂的污水中是否存在金属和非金属离子，以及是否存在金属耐受性和耐药性细菌。方法：通过十二烷基硫酸钠（SDS）固化和直接细胞转移实验证明了质粒介导的金属耐受性和多重耐药性。结果：发现存在的离子（以mgL-1计）包括：汞（50.148），铅（41.906），钠（907.240）和钾（700.00）。从废水中分离出的细菌是肠杆菌属（n = 15），大肠埃希菌（n = 18），无色杆菌（n = 18），不动杆菌属（n = 25），克雷伯菌（n = 12），假单胞菌（n = 08） ），变形杆菌（n = 20）和沙雷氏菌（n = 10）。肠杆菌属细菌显示出对铅的高百分比耐受性，为73％。不动杆菌属和假单胞菌属物种对所有单个盐类的耐受性均不同。假单胞菌和克雷伯菌属分别对试验药物表现出25-75％至8.3-41.7％的全面耐药性。按照SDS固化方案，不动杆菌和克雷伯菌各占60％同时失去了金属耐受性和耐药性。两种特性的总损失百分比为57.1％。接受者获得的金属耐受性和多药耐药性总计（100％），因此在对这些接受者进行SDS治疗后，这些能力的丧失也随之增加。讨论：讨论了从这些发现中得出的公共健康危害。

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