Immunofluorescent characteristics of the diabetic cornea.

Daniel Albert // Publications // Apr 01 1990

PubMed ID: 2183964

Author(s): Weiss JS, Sang DN, Albert DM. Immunofluorescent characteristics of the diabetic cornea. Cornea. 1990 Apr;9(2):131-8. PMID 2183964

Journal: Cornea, Volume 9, Issue 2, Apr 1990

In view of the increasing awareness of corneal abnormalities in diabetes, five diabetic and five nondiabetic post-mortem corneas were investigated. Indirect fluorescent antibody techniques were used for the detection of immunoglobulin, complement components, fibrinogen, and fibronectin, as some of these had already been found in the kidney, pancreas, and skin of diabetic patients. There was no obvious difference in the deposition of IgG, IgA, IgM, fibrinogen, or fibronectin between diabetic and control corneal specimens. Five diabetic specimens versus three control specimens demonstrated positive staining at 1:50 dilution for complement components Clq, C3, and C4. This staining was primarily present in the epithelium. Of greater interest was the finding that complement components were present in the basement membrane of two diabetic patients, but were not found in nondiabetic patients. In conclusion, diabetic corneas demonstrate unusual staining for complement components in the epithelial basement membrane.