Related Experiment Video
Updated: Jul 8, 2026
11:22
Treatment of Osteochondral Defects in the Rabbit's Knee Joint by Implantation of Allogeneic Mesenchymal Stem Cells in Fibrin Clots
Published on: May 21, 2013
17.9K
Elastase-Treated Auricular Cartilage: Feasibility as a Substitute for Native Tarsus
Elana Meer1, Kendall Goodyear2, Joseph Park2,3
1Department of Ophthalmology, University of California, San Francisco.
Ophthalmic Plastic and Reconstructive Surgery
|January 13, 2026
Summary
Elastase treatment softens cartilage, making it a potential substitute for the eyelid
Area of Science:
- Ophthalmology
- Biomaterials Science
- Tissue Engineering
Background:
- Reconstructing upper eyelid defects is challenging due to limited local tissue and lack of suitable tarsal substitutes.
- Cartilage is too stiff for direct posterior lamella implantation, risking corneal damage.
Purpose of the Study:
- To investigate if elastase treatment can reduce cartilage stiffness for use as a posterior eyelid lamella substitute.
- To evaluate elastase-treated cartilage as a potential biomaterial for eyelid reconstruction.
Main Methods:
- Porcine auricular cartilage was treated with elastase or a buffer control.
- Histopathology, electron microscopy, and mechanical testing (Young's modulus) were performed at baseline, 2, and 24 hours.
- Compared elastase-treated cartilage, buffer-treated cartilage, and native tarsus.
Main Results:
- Elastase treatment increased cartilage flexibility and altered its microstructure.
- Electron microscopy showed elastin fiber degradation.
- By 24 hours, elastase-treated cartilage's equilibrium modulus (0.055 MPa) approached that of native tarsus (0.016 MPa).
Conclusions:
- Elastase treatment significantly increases cartilage flexibility.
- Treated cartilage exhibits microstructural changes, including elastin degradation.
- Elastase-treated cartilage shows potential as a viable posterior eyelid lamella substitute.
