Abstract:
PURPOSE:To describe the histopathologic features of Descemet's membrane (DM) obtained from Fuchs' endothelial corneal dystrophy (FECD) corneas undergoing Descemet's stripping with endothelial keratoplasty (DSEK) and to assess the presence of advanced glycation end products (AGEs) and their receptors in FECD endothelium and DM. DESIGN:Prospective observational case series. PARTICIPANTS:Five eyes of 5 patients undergoing DSEK for FECD and 4 normal control eyebank corneas. METHODS:Descemet's membrane and corneal endothelium from FECD patients undergoing DSEK were assessed with hematoxylin-eosin staining and immunohistochemistry for AGEs, receptor of AGEs (RAGE), and galectin 3 (AGE-R3). MAIN OUTCOME MEASURES:Histopathologic abnormalities and presence of AGEs, RAGE, and AGE-R3 in DSEK specimens. RESULTS:Histopathologic assessment of DSEK specimens from FECD patients disclosed thickening and nodularity of DM and loss of endothelial cells. Immunohistochemical staining of FECD DM for AGE, RAGE, and AGE-R3 showed an abundance of AGEs in the anterior portion of DM, mild positivity for RAGE, and moderate positivity for AGE-R3. CONCLUSIONS:Tissue quality after DSEK is sufficient to allow detailed histopathologic analysis. The presence of AGEs, RAGE, and AGE-R3 in DM and corneal endothelium of FECD patients supports a link between accumulation of AGEs, oxidative stress, and corneal endothelial cell apoptosis in the pathogenesis of FECD.
journal_name
Ophthalmologyjournal_title
Ophthalmologyauthors
Wang Z,Handa JT,Green WR,Stark WJ,Weinberg RS,Jun ASdoi
10.1016/j.ophtha.2006.10.049subject
Has Abstractpub_date
2007-08-01 00:00:00pages
1453-60issue
8eissn
0161-6420issn
1549-4713pii
S0161-6420(06)01555-7journal_volume
114pub_type
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