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- W2052804020 abstract "The aim of the present study was to evaluate the potential of PEGylated solid lipid nanoparticle (pSLN) as mucus penetrating particles (MPP) for oral delivery across gastrointestinal mucus. The SLN was prepared by an aqueous solvent diffusion method, subsequently modified with PEG2000-stearic acid (PEG2000-SA) as hydrophilic groups. Surface properties, cytotoxicity, cellular uptake, and transport across Caco-2/HT29 coculture cell monolayers, intestinal absorption, and pharmacokinetics of pSLN were studied compared with that of SLN. Quantitative cellular uptake showed that the internalization of SLN and pSLN was an active transfer process, which would be restrained by several inhibitors of cell activity. Compared with SLN, the permeation ability of pSLN decreased through Caco-2 cell monolayer while it increased through a mucus-secreting Caco-2/HT29 coculture cell monolayer, which indicated that the mucus layer has a significant impact on determining the efficiency of oral nanoformulations. In addition to increasing permeation ability, the stability of the nanoparticles in simulated intestinal fluids was also increased by the PEGylation. Moreover, in vitro everted gut sac technique and the ligated intestinal loops model in vivo also demonstrated that pSLN can rapidly penetrate mucus secretions, whereas the SLN were strongly trapped by highly viscoelastic mucus barriers. The pharmacokinetic studies presented that pSLN exhibited improved absorption efficiency and prolonged blood circulation times with a 1.99-fold higher relative bioavailability compared with SLN. In conclusion, PEGylated solid lipid nanoparticles had advantages in enhancing the bioavailability of oral administration." @default.
- W2052804020 created "2016-06-24" @default.
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- W2052804020 date "2013-04-05" @default.
- W2052804020 modified "2023-10-18" @default.
- W2052804020 title "Improved Transport and Absorption through Gastrointestinal Tract by PEGylated Solid Lipid Nanoparticles" @default.
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- W2052804020 doi "https://doi.org/10.1021/mp300649z" @default.
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