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- W2067496698 abstract "The purpose of this study was to design and evaluate lectin-conjugated PLGA nanoparticles for oral delivery of thymopentin. Thymopentin loaded PLGA nanoparticles (TP5-NPs) were prepared by a double emulsion-solvent evaporation technique. Novel WGA-PLGA conjugates were synthesized by coupling the amino groups of wheat germ agglutinin (WGA) to the carbodiimide-activated carboxylic groups of PLGA, and were incorporated into nanoparticles preparation to take mucoadhesive properties. Important characteristics such as particle size, zeta potential, entrapment efficiency, storage stability, as well as in vitro drug release behavior were investigated. The retention of biorecognitive activity of WGA after covalent coupling was confirmed by haemagglutination test. In vitro experiments with pig mucin (PM) demonstrated that the conjugation of WGA enhanced the interaction about 1.8-4.2 fold compared with that of the non-conjugated nanoparticles, and still exhibited sugar specificity. The pharmacodynamical studies on oral administration of WGA-TP5-NPs were performed in FACScan flow cytometry. The values of CD4(+)/CD8(+) ratios were significantly increased compared with that of TP5-NPs (p<0.01). The enhanced uptake was related to the increasing of WGA content on nanoparticles. These results confirmed that the conjugation of WGA onto PLGA nanoparticles effectively improved the intestinal absorption of TP5 due to specific bioadhesion on GI cell membrane." @default.
- W2067496698 created "2016-06-24" @default.
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- W2067496698 date "2006-12-01" @default.
- W2067496698 modified "2023-09-27" @default.
- W2067496698 title "Preparation and evaluation of lectin-conjugated PLGA nanoparticles for oral delivery of thymopentin" @default.
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- W2067496698 doi "https://doi.org/10.1016/j.jconrel.2006.09.015" @default.
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