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• W2018498175 abstract "Enhanced antifungal effects of amphotericin B-TPGS-b-(PCL-ran-PGA) nanoparticles in vitro and in vivo Xiaolong Tang,1,2,* He Zhu,3,* Ledong Sun,4,* Wei Hou,2 Shuyu Cai,1 Rongbo Zhang,1 Feng Liu5 1Stem Cell Engineering Research Center, School of Medicine, Anhui University of Science and Technology, Huainan, People’s Republic of China; 2State Key Laboratory of Virology, Life Sciences College, Wuhan University, Wuhan, Hubei, People’s Republic of China; 3Institute of Skin Damage and Repair, General Hospital of Beijing Military Command, Beijing, People’s Republic of China; 4Department of Dermatology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China; 5Department of Anesthesiology, Children’s Hospital, Chongqing Medical University; Key Laboratory of Child Development and Disorders of the Ministry of Education, Chongqing, People’s Republic of China *These authors contributed equally to this work Background: Amphotericin B (AMB) is a polyene antibiotic with broad spectrum antifungal activity, but its clinical toxicities and poor solubility limit the wide application of AMB in clinical practice. Recently, new drug-loaded nanoparticles (NPs) – diblock copolymer D-α-tocopheryl polyethylene glycol 1000 succinate-b-poly(ε-caprolactone-ran-glycolide) (PLGA-TPGS) – have received special attention for their reduced toxicity, and increased effectiveness of drug has also been reported. This study aimed to develop AMB-loaded PLGA-TPGS nanoparticles (AMB-NPs) and evaluate their antifungal effects in vitro and in vivo.Methods: AMB-NPs were prepared with a modified nanoprecipitation method and then characterized in terms of physical characteristics, in vitro drug release, stability, drug-encapsulation efficiency, and toxicity. Finally, the antifungal activity of AMB-NPs was investigated in vitro and in vivo.Results: AMB-NPs were stable and spherical, with an average size of around 110 nm; the entrapment efficacy was closed to 85%, and their release exhibited a typically biphasic pattern. The actual minimum inhibitory concentration of AMB-NPs against Candida albicans was significantly lower than that of free AMB, and AMB-NPs were less toxic on blood cells. In vivo experiments indicated that AMB-NPs achieved significantly better and prolonged antifungal effects when compared with free AMB.Conclusion: The AMB-PLGA-TPGS NP system significantly improves the AMB bioavailability by improving its antifungal activities and reducing its toxicity, and thus, these NPs may become a good drug carrier for antifungal treatment. Keywords: drug delivery, anti-infection, nanocarrier, C. albicans, amphotericin B" @default.
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• W2018498175 title "Enhanced antifungal effects of amphotericin B-TPGS-b-(PCL-ran-PGA) nanoparticles in vitro and in vivo" @default.
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• W2018498175 doi "https://doi.org/10.2147/ijn.s71623" @default.
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