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• W2019117675 startingPage "237" @default.
• W2019117675 abstract "Camptothecin (CPT), known to be an effective anticancer drug, has a limited therapeutic utility because of its poor water solubility. In this work, an approach has been made to overcome the limitation. CPT was first incorporated into the micelles formed from an ionic surfactant, sodium dodecyl sulfate (SDS) and the micellar drug aqueous solution was then used in preparation of the agarose hydrogel. It has been found that the presence of SDS greatly increased the solubility of CPT in water. For example, in 1 ml of 1.0 wt.% SDS water solution, 0.11 mg CPT could be solubilized (0.318 mM), which was 83 times the solubility in pure water. It was the hydrophobic cores of the SDS micelles that were able to accept the lipophilic drug to form stable drug-immobilized micelles. The formulation of a hydrogel using the drug-immobilized micelles has allowed us to obtain a unique and novel drug release system where the drug molecules are encapsulated by the micelles and the drug-containing micelles are dispersed in the gel network. The release of CPT from the so deliberately fabricated agarose hydrogel system has been studied as a function of surfactant concentration at 37 °C. The diffusion coefficients of CPT obtained by fitting to Fick's law ranged from 2.12 to 7.36 × 10−7 cm2 s−1. The results showed that SDS prolonged the drug release by reducing the diffusion coefficient of CPT in the gel." @default.
• W2019117675 created "2016-06-24" @default.
• W2019117675 creator A5003008706 @default.
• W2019117675 creator A5086995582 @default.
• W2019117675 date "2005-06-01" @default.
• W2019117675 modified "2023-09-24" @default.
• W2019117675 title "SDS-aided immobilization and controlled release of camptothecin from agarose hydrogel" @default.
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• W2019117675 doi "https://doi.org/10.1016/j.ejps.2005.02.013" @default.
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