Tonsomboon, K and Oyen, ML (2013) Composite electrospun gelatin fiber-alginate gel scaffolds for mechanically robust tissue engineered cornea. J Mech Behav Biomed Mater, 21. pp. 185-194.Full text not available from this repository.
A severe shortage of good quality donor cornea is now an international crisis in public health. Alternatives for donor tissue need to be urgently developed to meet the increasing demand for corneal transplantation. Hydrogels have been widely used as scaffolds for corneal tissue regeneration due to their large water content, similar to that of native tissue. However, these hydrogel scaffolds lack the fibrous structure that functions as a load-bearing component in the native tissue, resulting in poor mechanical performance. This work shows that mechanical properties of compliant hydrogels can be substantially enhanced with electrospun nanofiber reinforcement. Electrospun gelatin nanofibers were infiltrated with alginate hydrogels, yielding transparent fiber-reinforced hydrogels. Without prior crosslinking, electrospun gelatin nanofibers improved the tensile elastic modulus of the hydrogels from 78±19 kPa to 450±100 kPa. Stiffer hydrogels, with elastic modulus of 820±210 kPa, were obtained by crosslinking the gelatin fibers with carbodiimide hydrochloride in ethanol before the infiltration process, but at the expense of transparency. The developed fiber-reinforced hydrogels show great promise as mechanically robust scaffolds for corneal tissue engineering applications.
|Uncontrolled Keywords:||Alginates Animals Artificial Organs Biocompatible Materials Cornea Corneal Transplantation Electroplating Equipment Failure Analysis Gelatin Gels Glucuronic Acid Hardness Hexuronic Acids Materials Testing Prosthesis Design Refractometry Rotation Swine Tensile Strength Tissue Engineering Tissue Scaffolds|
|Divisions:||Div C > Biomechanics|
|Depositing User:||Cron Job|
|Date Deposited:||07 Mar 2014 11:27|
|Last Modified:||15 Sep 2014 01:05|