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Apoptosis in the endothelium of organ-cultured human corneas

By Julie Albon, A. B. Tullo and Michael Edwin Boulton


urpose. To determine whether endothelial cell loss of human corneas stored in organ culture before transplantation is due to apoptosis.\ud \ud methods. The corneal endothelium of human corneas, stored in organ culture at 34°C for varying periods of time, were analyzed for the presence of apoptotic cells using the TdT-mediated dUTP nick-end labeling (TUNEL) technique. Corneal endothelial cell apoptosis was confirmed by Hoechst staining and immunolabeling with anti–caspase 3 active antibody.\ud \ud results. Apoptotic cells were identified in the corneal endothelium of human organ cultured corneas: their number and distribution demonstrated a close correlation with corneal folding and overall quality of the corneal endothelium. TUNEL-positive labeling of cells was confirmed as apoptotic by the presence of morphologic nuclear alterations identified by Hoechst staining and the presence of immunostaining for caspase-3 activity. Corneal endothelial cell apoptosis was independent of cause of donor death, death to enucleation time, and death to culture times

Topics: RE
Publisher: Association for Research in Vision and Ophthalmology
Year: 1997
OAI identifier: oai:
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