神农架金丝猴粪便中致泻性大肠杆菌的分离鉴定及药敏分析

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  目的 了解神农架金丝猴粪便中致泻性大肠杆菌分离情况及菌株特征。方法 对2013年7月至2014年3月从神农架采集的38只金丝猴的76份粪便样品(8份腹泻样品)进行大肠杆菌常规分离培养。观察分离细菌的培养特性和形态,进行生化试验、PCR分群试验鉴定,然后对五种致泻性大肠埃希菌(EPEC、EHEC、ETEC、EIEC、EAEC)的12种毒力相关基因(eae、escV、bfpB、stxlA、stx2A、elt、estIa、estIb、invE、astA、aggR、pic)合成引物进行毒力基因检测;再对已确定毒力基因的菌株进行大肠杆菌O抗原血清型鉴定、LD50试验及药敏分析。结果 通过PCR扩增出eae、escV毒力基因,确定从两只腹泻金丝猴粪便中分离到两株非典型致病性大肠杆菌(EPEC)。
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