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- W3032497450 abstract "目的 研究1992-1996年和2003-2005年两个时间段90份铜绿假单胞菌1型整合子结构,比较其结构差异,以了解不同年代1型整合子变化趋势.方法 用常规和长片段PCR方法扩增1型整合子及耐药基因,并对PCR产物进行测序和GenBank比对分析.结果 41份1992-1996年间样本有13份检出1型整合子结构,长片段PCR扩增1型整合子DNA平均长度为1 868 bp,平均包含2个耐药基因,包括qacE△1(n=6)、sul1(n=14)、aadA1(n=2)、aadB(n=1)、PSE-1(n=2)和tetA(n=1)等6种耐药基因,形成5种耐药基因盒组合.49份2003-2005年间样本中有19份检出1型整合子结构,长片段PCR扩增产物平均长度为3 383 bp,平均包含3.6个耐药基因,包括qacE△1(n=18)、sul1(n=25)、aadA1(n=6)、aadB(n=7)、aacA4(n=2)、PSE-1(n=3)、VEB-1(n=4)、OXA10(n=1)、cm1A(n=1)和tetA(n=2)10种耐药基因,形成9种耐药基因盒组合.结论 根据整合子碱基数量和所携带耐药基因盒数量,发现2003-2005年间检出的1型整合子结构比1992-1996间检出的复杂程度增加。" @default.
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- W3032497450 date "2007-06-11" @default.
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- W3032497450 title "Comparison of class 1 integrons detected in Pseudomonas aeruginosa in different periods" @default.
- W3032497450 doi "https://doi.org/10.3760/j.issn:1009-9158.2007.06.019" @default.
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