Lasers Med Sci:光动力处理可有效降低白色念珠菌毒力因子的表达

2018-04-01 MedSci MedSci原创

本研究旨在评估光动力学灭活(PDI)对白色念珠菌生物膜的影响,评估其对酵母ALS3、HWP1、BCR1、TEC1、CPH1和EFG1基因表达的影响。本研究中使用三种白色念珠菌样品:来自HIV(39S)患者的临床样品,来自义齿口腔炎病变(Ca30)的患者的临床样品和标准株ATCC18804。基因表达的定量与实时使用定量聚合酶链式反应(qPCR)检测上述样品中那些基因的产生有关。PDI使用分别用低功率

本研究旨在评估光动力学灭活(PDI)对白色念珠菌生物膜的影响,评估其对酵母ALS3、HWP1、BCR1、TEC1、CPH1和EFG1基因表达的影响。本研究中使用三种白色念珠菌样品:来自HIV(39S)患者的临床样品,来自义齿口腔炎病变(Ca30)的患者的临床样品和标准株ATCC18804。

基因表达的定量与实时使用定量聚合酶链式反应(qPCR)检测上述样品中那些基因的产生有关。PDI使用分别用低功率激光(可见红色,660nm)和绿色LED(532nm)敏化的光敏剂亚甲基蓝(300uM)和400uM赤藓红。没个样本的四组及PDI策略均进行了评估:(a)P + L +:用光敏剂敏化并用光照射,(b)P + L-:仅用光敏剂处理,(c)P-L +:仅照射(d)PL-:没有染料敏化和光照不足。结果通过t检验分析,显著性水平为5%。

结果显示,光动力学灭活能够减少所有基因的表达。激光处理ALS3、HWP1、BCR1,TEC1、CPH1和EFG1的减少分别为0.73,0.39,0.77,0.71,0.67和0.60,LED处理则分别降低0.66,0.61,0.050,0.43,0.54和0.66。

综上所述,该研究结果表明,PDI可降低白色念珠菌基因的表达,降低其毒力。

原始出处:

Freire F, de Barros PP, et al., Photodynamic inactivation in the expression of the Candida albicans genes ALS3, HWP1, BCR1, TEC1, CPH1, and EFG1 in biofilms. Lasers Med Sci. 2018 Mar 27. doi: 10.1007/s10103-018-2487-8.

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    2018-11-06 一叶知秋
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