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- W2187865612 abstract "It was the aim of this study to develop an oral self-emulsifying drug delivery system (SEDDS) for the peptide drug daptomycin exhibiting an anionic net charge. Drug lipophilicity was increased by hydrophobic ion pairing with cationic surfactant dodecylamine hydrochloride in molar ratio of surfactant to peptide 5:1. Log P (octanol/water) of -5.0 was even raised to +4.8 due to complexation with dodecylamine hydrochloride. Various SEDDS formulations were developed and characterised regarding emulsification properties, droplet size, polydispersity index and zeta potential. When the daptomycin dodecylamine complex (DAP/DOA) was dissolved in a formulation containing 35% Dermofeel MCT, 30% Capmul MCM and 35% Cremophor RH40, a maximum payload of even 8.0% (w/w) corresponding to 5.5% pure daptomycin was achieved. The formulation was degraded by lipase within 90min. Release studies of daptomycin from this formulation emulsified in 50mM phosphate buffer pH6.8 demonstrated a sustained drug release for at least six hours. Moreover, SEDDS exhibited also mucus permeating properties as well as a protective effect towards drug degradation by α-chymotrypsin. According to these results, SEDDS containing 8% DAP/DOA complex may be considered as a new potential oral delivery system for daptomycin." @default.
- W2187865612 created "2016-06-24" @default.
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- W2187865612 date "2016-01-01" @default.
- W2187865612 modified "2023-10-12" @default.
- W2187865612 title "Development and in vitro characterisation of an oral self-emulsifying delivery system for daptomycin" @default.
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- W2187865612 doi "https://doi.org/10.1016/j.ejps.2015.10.005" @default.
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