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Peripheral nerve regeneration within an asymmetrically porous PLGA/Pluronic F127 nerve guide conduit

Paper ID Volume ID Publish Year Pages File Format Full-Text
10614 694 2008 9 PDF Available
Title
Peripheral nerve regeneration within an asymmetrically porous PLGA/Pluronic F127 nerve guide conduit
Abstract

Asymmetrically porous tubes with selective permeability and hydrophilicity as nerve guide conduits (NGCs) were fabricated using poly(lactic-co-glycolic acid) (PLGA) and Pluronic F127 by a modified immersion precipitation method. The inner surface of the tube had nano-size pores (∼50 nm) which can effectively prevent from fibrous tissue infiltration but permeate nutrients and retain neurotrophic factors, while the outer surface had micro-size pores (∼50 μm) which can allow vascular ingrowth for effective supply of nutrients into the tube. From the animal study using a rat model, the hydrophilized PLGA/F127 (3 wt%) tube showed better nerve regeneration behavior than the control silicone or hydrophobic PLGA tubes, as investigated by immunohistochemical observation (by fluorescent microscopy with anti-neurofilament staining), histological observations (by light microscopy with toluidine blue staining and transmission electron microscopy), and electrophysiological evaluation (by compound muscle action potential measurement). This is probably owing to the effective permeation of nutrients and prevention of fibrous scar tissue invasion as well as the good mechanical strength of the tube to maintain a stable support structure for the nerve regeneration.

Keywords
Peripheral nerve regeneration; Nerve guide conduit (NGC); Asymmetrically porous tube; Selective permeability; Hydrophilicity
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Peripheral nerve regeneration within an asymmetrically porous PLGA/Pluronic F127 nerve guide conduit
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 29, Issue 11, April 2008, Pages 1601–1609
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us