NDLI: Thiolated chitosan nanoparticles for enhancing oral absorption of docetaxel: preparation, in vitro and ex vivo evaluation

Content Provider	PubMed Central
Author	Saremi, Shahrooz Atyabi, Fatemeh Akhlaghi, Seyedeh Parinaz Nasser, Ostad Seyed Rassoul, Dinarvand
Copyright Year	2011
Abstract	The aim of this study was to prepare and evaluate mucoadhesive core-shell nanoparticles based on copolymerization of thiolated chitosan coated on poly methyl methacrylate cores as a carrier for oral delivery of docetaxel. Docetaxel-loaded nanoparticles with various concentrations were prepared via a radical emulsion polymerization method using cerium ammonium nitrate as an initiator. The physicochemical properties of the obtained nanoparticles were characterized by: dynamic light-scattering analysis for their mean size, size distribution, and zeta potential; scanning electron microscopy and transmission electron microscopy for surface morphology; and differential scanning calorimetry analysis for confirmation of molecular dispersity of docetaxel in the nanoparticles. Nanoparticles were spherical with mean diameter below 200 nm, polydispersity of below 0.15, and positive zeta potential values. The entrapment efficiency of the nanoparticles was approximately 90%. In vitro release studies showed a sustained release characteristic for 10 days after a burst release at the beginning. Ex vivo studies showed a significant increase in the transportation of docetaxel from intestinal membrane of rat when formulated as nanoparticles. Cellular uptake of nanoparticles was investigated using fluoresceinamine-loaded nanoparticles. Docetaxel nanoparticles showed a high cytotoxicity effect in the Caco-2 and MCF-7 cell lines after 72 hours. It can be concluded that by combining the advantages of both thiolated polymers and colloidal particles, these nanoparticles can be proposed as a drug carrier system for mucosal delivery of hydrophobic drugs.
Related Links	http://dx.doi.org/10.2147/ijn.s15500
Ending Page	128
Starting Page	119
File Format	PDF
ISSN	11782013
e-ISSN	11782013
Journal	International Journal of Nanomedicine
Volume Number	6
Language	English
Publisher	Dove Medical Press
Publisher Date	2011-01-01
Access Restriction	Open
Rights Holder	Dove Medical Press
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Organic Chemistry Medicine Drug Discovery Biomaterials Biophysics Bioengineering Pharmaceutical Science

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