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- W3210985923 abstract "In this study, we focused on quetiapine fumarate (QTF), a class II BCS drug. QTF is an atypical antipsychotic used in the treatment of schizophrenia and bipolar disorders. Our objective was to develop a new QTF-loaded self-emulsifying drug delivery system (SEDDS) to improve the dissolution and absorption of the drug. An experimental design approach was used to develop and optimize QTF-loaded SEDDS. The optimized formulation was characterized for droplets size, zeta potential, PDI, and stability. It was then evaluated using an in-vitro combined test for dissolution and Everted gut sac technique. Mathematical modeling and Transmission electron microscopy (TEM) were used to elucidate the mechanism of release. The optimal formulation was type IIIB SEDDS, constituted of 9.1% of oleic acid, 51.6% of Tween®20, and 39.3% of Transcutol® P. It showed a droplets size of 144.8 ± 4.9nm with an acceptable PDI and zeta potential. For in-vitro evaluation tests, we noticed an enhancement of the dissolution rate of the optimal QTF-loaded SEDDS compared to the free drug (98.82 ± 1.24% for SEDDS after 30 min compared to 85.65 ± 2.5% for the pure drug). The release of QTF fitted with the Hopfenberg model indicating the drug was released by water diffusion and erosion mechanism. This result was confirmed by TEM images which showed a smaller droplet size after release. We also found an amelioration of the permeability of QTF of 1.69-fold from SEDDS compared to the free drug. Hence, the SEDDS formulation represented a new way to improve the dissolution and absorption of QTF." @default.
- W3210985923 created "2021-11-08" @default.
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- W3210985923 date "2021-01-01" @default.
- W3210985923 modified "2023-09-23" @default.
- W3210985923 title "Self-emulsifying Drug Delivery System for Improved Dissolution and Oral Absorption of Quetiapine Fumarate: Investigation of Drug Release Mechanism and In-vitro Intestinal Permeability." @default.
- W3210985923 doi "https://doi.org/10.22037/ijpr.2021.114785.15032" @default.
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