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Self-emulsifying preconcentrates of daidzein-phospholipid complex: design, in vitro and in vivo appraisal
Yosra Sr Elnaggar1,2, Eman Mm Shehata1, Sally Galal1
1Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
Aim:
Self-emulsifying phospholipid-complex preconcentrates (SEPPs) were fabricated to improve oral bioavailability of daidzein (DAI), an anticancer drug with challenging amphiphobic nature and extensive presystemic metabolism.
Methods:
DAI-phosphatidylcholine complex was prepared to enhance DAI lipophilicity and loading in SEPPs. The physicochemical characteristics and the pharmacokinetic behavior in rats were studied.
Results:
Surfactant-free SEPP (plain DAI:Phosal® 53MCT complex) was monodisperse upon aqueous dilution with nanorange globule size (485 ± 15 nm). Compared with drug suspension, it showed enhanced drug release and 2.38-fold enhanced oral bioavailability with minimized drug-induced intestinal irritation. Addition of 30% surfactant/co-surfactant mixture did not show any significant difference in drug release rate or absorption profile.
Conclusion:
The highly safe surfactant-free SEPP could be an effective approach to improve DAI oral bioavailability.
