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时间:2019-02-24
《阿萨希毛孢子菌氟康唑体外诱导耐药的方法优化》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、阿萨希毛孢子菌氟康唑体外诱导耐药的方法优化张德全1,2,夏志宽2,田艳丽2,廖勇2,吕雪莲2,陈卫2,王聪敏2,杨蓉娅2(400038重庆,第三军医大学1;100700北京,北京军区总医院全军皮肤损伤修复研究所2)[摘要]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
2、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。[关键词]阿萨希毛孢子菌;氟康唑;耐药性;最小抑菌浓度[中图法分类号][文献标志码]AOptimizationoninductiono
3、ffluconazoleresistanceinvitroinTrichosporonasahiiZHANGDe-quan1,2,XIAZhi-kuan2,TIANYan-li2,LIAOYong2,LUXue-lian2,CHENWei2,WANGCong-min2,YANGRong-ya2(1.400038,Chongqing,ThirdMilitaryMedicalUniversity;2.100700,Beijing,TheMilitaryInstituteofInjuryandReparation,GeneralHospitalofBeijingMilitaryCommandofP
4、LA)[基金项目]国家自然科学基金(81271764)[通信作者]杨蓉娅,电话(010)66721229,E-mail:yangrya@sina.com[Abstract]ObjectiveTocomparethesuccessfulrateandstabilityoffluconazoleinductionresistantstrainsinT.asahii,whichwereinducedbyfluconazolealone,combinedwithmethylprednisolone,andmethylprednisolonealone.Methods16clinicalandenvi
5、ronmentalstrainsofT.asahiiweretestedthesusceptibilityagainstfluconazoleinvitro,andwereinducedresistancetofluconazolebyfluconazolealone,fluconazolecombinatedwithmethylprednisoloneandmethylprednisolonealonerespectively,comparingwiththecontrolgroup.Theresistantstrainswerepassed30timesindrug-freemedium
6、toassessthestabilityofresistance.ResultsThenegativecontrol groupand methylprednisolonealonegroup hadnoobvious changesin MICduringtheinduction.12resistantstrains(75%)wereobtainedby fluconazole aloneinductiongroup,and16strains(100%) wereobtainedbyfluconazolecombinedmethylprednisolone group.After30 pa
7、ssages, fluconazole resistantstrains (37.5%) weremaintainedinfluconazoleinducedgroup,and9fluconazole resistantstrains (56.25%)were maintained influconazolecombinedmethylprednisolonegroup.ConclusionMethylpre
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