动态光散射
酮康唑
白色念珠菌
PLGA公司
Zeta电位
细胞毒性
黄曲霉
材料科学
核化学
最小抑制浓度
溶解度
纳米颗粒
微生物学
化学
生物化学
生物
纳米技术
抗菌剂
体外
有机化学
抗真菌
作者
Irem Coksu,Yagmur Bozkurt,İlkgül Akmayan,Hasan Demirci,Tülin Özbek,Serap Derman
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2023-12-27
卷期号:35 (11): 115702-115702
标识
DOI:10.1088/1361-6528/ad1444
摘要
Abstract Ketoconazole (KTZ), an antifungal agent used to treat localized or systemic fungal infections by inhibiting ergosterol synthesis, exhibits restricted efficacy within eukaryotic cells owing to its elevated toxicity and limited solubility in water. This study aims to improve the biological activity and overcome cytotoxic effects in the renal system of the hydrophobic KTZ by incorporating it into poly(lactic- co -glycolic acid) (PLGA) nanoparticles (NPs) utilizing biomaterial nano-engineering techniques. KTZ-loaded PLGA NPs (KTZ-NPs) were prepared by single emulsion solvent evaporation method and characterized by using dynamic light scattering (DLS), electrophoretic light scattering (ELS), Fourier transform-infrared (FT-IR) spectroscopy and scanning light microscopy (SEM). Particle size and zeta potential of KTZ-NPs were determined as 182.0 ± 3.27 nm and −27.4 ± 0.56 mV, respectively. Antifungal activity was analyzed with the time-kill and top agar dilution methods on Candida albicans ( C. albicans ) and Aspergillus flavus ( A. flavus ). Both KTZ and KTZ-NPs caused a significant decrease in A. flavus cell growth; however, the same effect was only observed in time-killing analysis on C. albicans , indicating a methodological difference in the antifungal analysis. According to the top agar method, the MIC value of KTZ-NPs against A. flavus was 9.1 μ g ml −1 , while the minimum inhibition concentration (MIC) value of KTZ was 18.2 μ g ml −1 . The twofold increased antifungal activity indicates that nanoparticular drug delivery systems enhance the water solubility of hydrophobic drugs. In addition, KTZ-NPs were not cytotoxic on human renal proximal tubular epithelial cells (HRPTEpCs) at fungistatic concentration, thus reducing fungal colonization without cytotoxic on renal excretion system cells.
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