Development and characterization of acellular porcine corneal matrix using sodium dodecylsulfate.

Abstract:

PURPOSE:The objective of this study was to produce a porcine corneal acellular matrix (ACM) and assess its possibility for biomedical applications. METHODS:Porcine corneas were treated with various concentrations of sodium dodecylsulfate for different lengths of time. Optimal conditions for processing the ACM were noted regarding removal of all cellular components and retention of the spatial arrangement of the corneal stroma. The physical characteristics (including water absorption and light transmittance), biomechanics, and cytotoxicity of the ACM were also found to be conserved. Subsequently, ACM was transplanted into the interlaminar stroma of rabbit corneas. The transparency and structures of the collagen fibers were determined. RESULTS:By immersing corneal tissues in isotonic buffer containing 0.1% sodium dodecylsulfate for 7 hours, we were able to produce an ACM whose cells were completely removed, without disrupting collagen layer structure. Although water absorption and light transmittance of the ACM decreased when compared with natural corneal stroma, ACM showed similar biomechanical properties and biocompatibility as natural ones. After xenotransplantation into rabbit corneal stromal layers for 4 weeks, both ACM and rabbit corneas showed complete transparency. Almost 1 year postoperatively, the corneas remained transparent with regular stromal structures and ACM appeared stable in situ without deliquescence or immunological rejection. CONCLUSIONS:A simple and valid method to produce decellularized corneal matrix has been successfully developed. These acellular matrices similar to natural corneas in structure, strength, and transparency have tremendous potential for corneal transplantation as ideal implants for donors and for tissue engineering applications as suitable scaffolds.

journal_name

Cornea

journal_title

Cornea

authors

Zhou Y,Wu Z,Ge J,Wan P,Li N,Xiang P,Gao Q,Wang Z

doi

10.1097/ICO.0b013e3181dc8184

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

73-82

issue

1

eissn

0277-3740

issn

1536-4798

journal_volume

30

pub_type

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