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小熊猫源铜绿假单胞菌耐药性和耐药基因的研究
Authors
邹洁建 古河祥 翟俊琼 萨家祺 陈武 杜雪晴
Publication date
1 January 2021
Publisher
Editorial Department of Chinese Journal of Wildlife
Abstract
为了鉴定小熊猫(Ailurus fulgens)肺源致病菌并研究其耐药性和耐药基因,从死亡小熊猫肺部组织中无菌分离培养致病菌,进行革兰氏染色及16S rDNA测序鉴定。采用纸片扩散法(KB法)进行细菌药敏试验和小鼠致病性试验,应用PCR法检测分离株的28种β内酰胺酶相关基因、6种氨基糖苷类修饰酶基因(AMEs)、外膜蛋白D2基因(oprD2)、磺胺耐药基因(qacE△1sul1)、3种整合子基因(intⅠ1、2、3)和主动外排泵调节基因(mexR)等共40种耐药基因。肺组织样品中分离培养的1株菌鉴定为铜绿假单胞菌,革兰氏染色阴性,药敏试验对氯霉素敏感,对β内酰胺类、头孢类、氨基糖甙类、大环内酯类、硝基咪唑类、喹诺酮类和利福霉素等均具有耐药性,小鼠表现与小熊猫相似的症状而死亡。5种耐药基因TEM、aac(3)Ⅱ、ant(3″)Ⅰ、qacE△1sul1、intⅠ1为阳性,其他35种为阴性。该小熊猫肺源铜绿假单胞菌具有较强的致病性和多药耐药性,其耐药机制与5种耐药基因有关
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Last time updated on 03/04/2025