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铜绿假单胞菌对碳青霉烯类抗菌药物的耐药检测 被引量:2

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摘要 目的对临床分离的铜绿假单胞菌进行常规药物敏感性试验时,同步检测细菌对碳青霉烯类抗菌药物的耐药性。方法选取临床分离对亚胺培南耐药的46株铜绿假单胞菌,用聚合酶链反应(PCR)和二维试验分别检测其对亚胺培南耐药的基因型及表型,表型检测时以铜绿假单胞菌标准菌株(ATCC 27853)、亚胺培南纸片为抗菌药物的底物。结果亚胺培南耐药的46株菌中,PCR检测膜孔蛋白基因OprD2缺失菌株7株,检出率为15.2%;金属β-内酰胺酶基因blaIMP阳性菌株9株,检出率为19.6%;blaVIM阳性0株,检出率为0%。二维试验检测产碳青霉烯酶菌株15株,阳性率为32.6%,金属β-内酰胺酶基因blaIMP阳性菌株9株,全部阳性。膜孔蛋白基因OprD2缺失7株菌中,二维试验阴性6株。结论铜绿假单胞菌对亚胺培南的耐药主要由产酶及膜孔蛋白缺失引起,二维试验操作简便,可与常规的纸片琼脂扩散法药物敏感性试验同步进行,结果易于判读,可在各级临床细菌室操作。
出处 《检验医学》 CAS 北大核心 2008年第5期527-529,共3页 Laboratory Medicine
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