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• W2560917596 abstract "This work aimed to develop an alternative sustained-release thermosensitive praziquantel-loaded nanoemulsion (PZQ-NE) hydrogel for better schistosomiasis treatment.PZQ-NE-dispersed chitosan/glycerol 2-phosphate disodium/HPMC (NE/CS/β-GP/HMPC) hydrogel was successfully prepared to improve bioavailability of PZQ.Solubility tests and pseudo-ternary phase diagrams were applied to screen optimal oils, surfactants and co-surfactants of NE. The hydrogels were characterized for gelling time, surface exudates, rheological properties and in vitro drug release. Formulation optimization of NE/CS/β-GP/HMPC hydrogel was conducted by Box-Behnken experimental design combined with response surface methodology. In vitro cytotoxicity of hydrogel was studied by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide method. The sustained-release property of PZQ in NE and optimized hydrogel was evaluated by pharmacokinetic study in rabbits.The formulation of PZQ-NE consisted of mass ratio of 12.5% capryol 90 containing PZQ (160 mg/g), 40% cremophor RH 40/tween 20 and transcutol HP (S/CoS = 2:1), 47.5% deionized water. PZQ releasing from NE/CS/β-GP/HMPC hydrogels was best fitted to Higuchi model and governed by diffusion. Rheological investigation evidenced the themosensitive gelation of different hydrogel systems and their gel-like character at 37 °C. The optimized hydrogel formulation consisted of HPMC solution (103.69 mg/g), 3.03% (w/v) chitosan and 14.1% (w/v) β-GP showed no cytotoxicity when the addition of NE was no more than 100 mg/g. Pharmacokinetic parameters indicated that NE/CS/β-GP/HMPC hydrogel can significantly slow down drug elimination, prolong mean residence time and improve bioavailability of PZQ.NE/CS/β-GP/HMPC hydrogel possessed sustained-release property and could be an alternative antischistosomal drug delivery system with improved therapeutic effect." @default.
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• W2560917596 date "2017-01-05" @default.
• W2560917596 modified "2023-09-26" @default.
• W2560917596 title "Design and optimization of thermosensitive nanoemulsion hydrogel for sustained-release of praziquantel" @default.
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• W2560917596 doi "https://doi.org/10.1080/03639045.2016.1270960" @default.
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