Preparation of polyurethane–alginate/chitosan core shell nanoparticles for the purpose of oral insulin delivery

[Display omitted] •Synthesis of polyurethane using depolymerised polyethylene terephthalate.•Insulin loaded polyurethane-alginate/chitosan core-shell nanoparticles preparation.•Oral delivery of insulin loaded core-shell nanoparticles in animal model.•Toxicity assessment of these core-shell nanoparti...

Full description

Saved in:
Bibliographic Details
Published in:European polymer journal 2017-07, Vol.92, p.294-313
Main Authors: Bhattacharyya, Aditi, Mukherjee, Debarati, Mishra, Roshnara, Kundu, P.P.
Format: Article
Language:English
Subjects:
Bioavailability
Biocompatibility
Chitosan
Core-shell
Core-shell particles
Depolymerization
Fourier transforms
Glycolysis
Image transmission
In vitro methods and tests
In vivo methods and tests
Infrared spectroscopy
Insulin
Insulin bioavailability
Nanoparticles
Particle size
Polyethylene terephthalate
Polyurethane
Polyurethane resins
Scanning electron microscopy
Toxicity
Transmission electron microscopy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Synthesis of polyurethane using depolymerised polyethylene terephthalate.•Insulin loaded polyurethane-alginate/chitosan core-shell nanoparticles preparation.•Oral delivery of insulin loaded core-shell nanoparticles in animal model.•Toxicity assessment of these core-shell nanoparticles in animal model. Waste polyethylene terephthalate (PET) is depolymerized through glycolysis and the glycolyzed product, bis (2-hydroxyethylene) terephthalate (BHET) is utilized in the synthesis of polyurethane as diol. Polyurethane (PU) is incorporated in a core- shell nanoparticle formulation along with alginate (ALG) and chitosan (CS) to develop an efficient oral insulin delivery vehicle. Fourier transform infrared (FT-IR) spectrums of the polyurethane-alginate/chitosan (PU-ALG/CS) nanoparticles confirm the presence of all elements distinctly. Nanoparticles of average particle size 90–110nm are clearly visible from the images of scanning electron microscope (SEM) and transmission electron microscope (TEM). Unique characteristics of insulin loaded PU-ALG/CS nanoparticles are noticed in both in vitro and in vivo studies. More than 90% insulin encapsulation efficiency, sustained swelling, controlled insulin release from mucoadhesive nanoparticle formulation are the major causes of long term hypoglycaemic effects in diabetic mice and improved insulin bioavailability (10.36%). PU-ALG/CS nanoparticles are also found to be safe, according to the acute toxicity studies.
ISSN:0014-3057
1873-1945
DOI:10.1016/j.eurpolymj.2017.05.015