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Antigenicity of cryopreserved corneas
Archives of Ophthalmology (Chicago, Ill. : 1960)
|March 1, 1975
Summary
Cryopreservation does not significantly alter the antigenicity of corneal tissue. This study found no difference in graft rejection between fresh and cryopreserved donor corneas in rabbit xenografts.
Area of Science:
- Ophthalmology
- Immunology
- Tissue Engineering
Background:
- Corneal transplantation is a common procedure.
- Preservation methods for donor corneal tissue are crucial for graft survival.
- Understanding the immunogenicity of preserved tissue is essential.
Purpose of the Study:
- To evaluate the effect of cryopreservation on the antigenicity of donor corneal tissue.
- To compare the immune response to fresh, cryopreserved, and solution-treated corneal xenografts.
Main Methods:
- Interlamellar corneal xenografts were performed in albino rabbits using canine donor corneas.
- Donor tissues were prepared as fresh, cryopreserved, or stored in cryopreservative solutions without freezing.
- Cryopreservative solutions included rabbit albumin, dimethyl sulfoxide, and sucrose.
Main Results:
- Graft cloudiness occurred in approximately one-third of rabbits within six weeks.
- No statistically significant clinical or histological differences were observed between the three donor tissue preparation groups.
- Cryopreservation did not significantly impact the antigenicity of the corneal tissue.
Conclusions:
- Cryopreservation is a viable method for preserving corneal tissue without increasing its antigenicity.
- The findings suggest that cryopreserved donor corneas can be used for xenografts with comparable outcomes to fresh tissue.
- This research supports the potential use of cryopreserved corneas in transplantation settings.
