抗菌剂
革兰氏阴性菌
细菌
光动力疗法
化学
微生物学
蓝光
克
大肠杆菌
生物
生物化学
光电子学
材料科学
有机化学
遗传学
基因
作者
Min Wu,Carolina dos Anjos,Jiaqi Weng,Tianhong Dai
摘要
This study investigated the potentiation of KSeCN for both antimicrobial blue light (aBL,405nm) and antimicrobial photodynamic inactivation (aPDI) against different species of Gram-negative bacteria. For planktonic (108CFU/ml) E.coli, with KSeCN treatment (50mM concentration and 60J/cm2 aBL) demonstrated an increase of 4- to 5-log10 CFU reduction compared to aBL alone. E. coli, with KSeCN treatment (50mM,100uM Verteporfin and 20J/cm2 aBL) demonstrated an increase of 4- to 6-log10 CFU reduction compared to aPDI (100uM concentration of Verteporfin and 20J/cm2 aBL, 30min incubation time) alone. K. Pneumoniae and A. Baumannii show similar results. For biofilm (106 CFU/mL), an obvious CFU reduction of 5- to 7-log10 could be seen with KSeCN treatment (50mM and 100J/cm2 aBL) compared to aBL alone. CFU reduction of 6.5- to 8-log10 could be seen with KSeCN treatment (50mM,100uM Verteporfin and 40J/cm2 aBL) compared to aPDI alone (100uM concentration of Verteporfin and 40J/cm2). Confocal results (live/dead) made these findings solid which highlight the KSeCN function to potentiate aBL and aPDI against G-bacteria, offering a novel approach for antibiotic resistance infections.
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