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阿萨希毛孢子菌氟康唑体外诱导耐药的方法优化

, PP. 2441-2444

Keywords: 阿萨希毛孢子菌,氟康唑,耐药性,最小抑菌浓度

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Abstract:

目的观察氟康唑联合甲强龙体外诱导阿萨希毛孢子菌(Trichosporonasahii,T.asahii)获得氟康唑体外诱导耐药株的成功率及稳定性,为T.asahii唑类耐药机制研究奠定基础。方法对16株T.asahii进行氟康唑的真菌体外药敏试验,分别通过氟康唑、氟康唑联合甲强龙和单纯甲强龙对其进行体外诱导耐药,并与空白对照组进行比较。所有诱导获得的耐药菌株进行30次无药传代,每株菌在每次传代后均重新进行最小抑菌浓度(MIC)检测。结果空白对照组及单纯甲强龙组各菌株MIC值无明显变化;单纯氟康唑诱导获得耐药株12株(75%),氟康唑联合甲强龙诱导获得耐药株16株(100%);两组经30代传代后,单纯氟康唑组耐药株6株(37.5%),氟康唑联合甲强龙诱导获得耐药株9株(56.25%)。结论甲强龙可以提高氟康唑诱导T.asahii耐药株的成功率和稳定性,氟康唑联合甲强龙优于单纯氟康唑,更适用于T.asahii氟康唑体外耐药株的诱导。

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