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Published in: Journal of Nanoparticle Research 11/2012

01-11-2012 | Research Paper

Concanavalin A conjugated biodegradable nanoparticles for oral insulin delivery

Authors: Pooja Hurkat, Aviral Jain, Ashish Jain, Satish Shilpi, Arvind Gulbake, Sanjay K. Jain

Published in: Journal of Nanoparticle Research | Issue 11/2012

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Abstract

Major research issues in oral protein delivery include the stabilization of protein in delivery devices which could increase its oral bioavailability. The study deals with development of oral insulin delivery system utilizing biodegradable poly(lactic-co-glycolic acid) (PLGA) nanoparticles and modifying its surface with Concanavalin A to increase lymphatic uptake. Surface-modified PLGA nanoparticles were characterized for conjugation efficiency of ligand, shape and surface morphology, particle size, zeta potential, polydispersity index, entrapment efficiency, and in vitro drug release. Stability of insulin in the developed formulation was confirmed by SDS-PAGE, and integrity of entrapped insulin was assessed using circular dichroism spectrum. Ex vivo study was performed on Wistar rats, which exhibited the higher intestinal uptake of Con A conjugated nanoparticles. In vivo study performed on streptozotocin-induced diabetic rats which indicate that a surface-modified nanoparticle reduces blood glucose level effectively within 4 h of its oral administration. In conclusion, the present work resulted in successful production of Con A NPs bearing insulin with sustained release profile, and better absorption and stability. The Con A NPs showed high insulin uptake, due to its relative high affinity for non-reducing carbohydrate residues i.e., fucose present on M cells and have the potential for oral insulin delivery in effective management of Type 1 diabetes condition.

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Metadata
Title
Concanavalin A conjugated biodegradable nanoparticles for oral insulin delivery
Authors
Pooja Hurkat
Aviral Jain
Ashish Jain
Satish Shilpi
Arvind Gulbake
Sanjay K. Jain
Publication date
01-11-2012
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 11/2012
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-012-1219-4

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