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外阴阴道念珠菌病患者白念珠菌分离情况及ERG5基因位点突变分析

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摘要 目的了解外阴阴道念珠菌病(VVC)患者白念珠菌分离及ERG5基因突变情况。方法收集无锡市妇幼保健院2018年6-12月妇产科门诊VVC患者阴道分泌物500例,通过镜下观察菌丝及孢子选取可疑标本,经沙保弱琼脂平板增菌后接种科玛嘉显色平板,进行基质辅助激光解吸电离飞行时间质谱(MALDI-TOF MS)鉴定;用真菌快速培养鉴定药敏试剂盒对白念珠菌进行药敏试验;PCR扩增部分白念珠菌ERG5基因并进行测序分析。结果显色平板鉴定结果显示,VVC病原以白念珠菌最多(54.7%),其次为光滑念珠菌(22.5%)、热带念珠菌(16.5%)、克柔念珠菌(4.2%)和其他真菌(2.1%);156株显色平板鉴定结果为白念珠菌的菌株中,经MALDI-TOF MS鉴定为白念珠菌共155株。155株白念珠菌对5-氟尿嘧啶均敏感,对各类唑类药物呈现不同水平耐药性;对7株(3株唑类药物耐药菌株,3株唑类药物敏感菌株和1株质控菌株)进行ERG5扩增测序,检出2个突变位点(1个同义突变位点G528A,1个错义突变位点G528C)。结论外阴阴道念珠菌以白念珠菌为主,并对各类唑类药物表现出不同的耐药率,耐药菌株中ERG5基因在G528C位点突变可能与耐药有关。
作者 金蕾 史伟峰
出处 《临床检验杂志》 CAS 2021年第4期307-309,共3页 Chinese Journal of Clinical Laboratory Science
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