Advanced glycation end products and receptors in Fuchs' dystrophy corneas undergoing Descemet's stripping with endothelial keratoplasty.

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

Ophthalmology

journal_title

Ophthalmology

authors

Wang Z,Handa JT,Green WR,Stark WJ,Weinberg RS,Jun AS

doi

10.1016/j.ophtha.2006.10.049

subject

Has Abstract

pub_date

2007-08-01 00:00:00

pages

1453-60

issue

8

eissn

0161-6420

issn

1549-4713

pii

S0161-6420(06)01555-7

journal_volume

114

pub_type

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