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Preparation and evaluation of luteolin-loaded PLA-based shape memory gastroretentive drug delivery systems.
International Journal of Pharmaceutics 2023 December 5
Luteolin, a natural flavonoid, is gaining growing attention for its potential in the treatment of gastric cancer. However, its clinical application is limited by factors such as poor aqueous solubility. This study aimed to develop a novel gastroretentive drug delivery system (GRDDS) to both enhance the oral bioavailability of luteolin and prolong its release and in vivo circulation time. Out of 10 luteolin-loaded PLA-based shape memory films prepared in this study, the LPC-PLA/PEG(7/3) formulation incorporated with PEG, HPMC, and NaHCO3 exhibited optimal properties in terms of drug release and inhibitory activity against SGC-7901 cells. Moreover, small-animal imaging revealed that LPC-PLA/PEG(7/3) exhibited a prolonged gastric retention time of approximately 8 h. Furthermore, the pharmacokinetic studies indicated a 354% increase in the oral bioavailability of LPC-PLA/PEG(7/3) in rats compared to luteolin. In sum, a novel GRDDS was developed to enhance the relative bioavailability of luteolin, offering a potential strategy for practical oral administration.
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