|
|
||||||||
1 From the Department of Ophthalmology, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, Newark, New Jersey; and the 2 Department of Veterans Affairs, New Jersey Health Care System, East Orange, New Jersey.
PURPOSE. To investigate the survival and behavior of retinal pigment epithelium (RPE) microaggregates transplanted onto hydraulically debrided Bruchs membrane and to compare results of using three different vehicles for cell delivery.
METHODS. RPE microaggregates obtained from male cats were transplanted onto the tapetal area of female cats after native RPE was debrided. For the control, one of three vehicles was introduced into the debridements. Each transplant or control specimen was analyzed histologically and immunohistochemically. Transplanted male RPE cells were identified by in situ labeling of the cat Y chromosome.
RESULTS. Histologically, significant numbers of condensed, darkly stained RPE nuclei were observed in all transplants compared with few TUNEL-positive RPE cells. Cellular retinaldehyde-binding protein was present up to day 7 in all RPE cells in transplants. In both transplant and control specimens, the antibody against the Ki-67 nuclear antigen labeled some RPE cells at day 3. TUNEL-positive outer nuclear layer nuclei were most frequently observed at day 1, but were much less frequent at 7 days in both transplant and control specimens.
CONCLUSIONS. Transplanted RPE appeared to retain at least some markers of differentiation up to 7 days after surgery. Some proliferation of transplanted RPE cells was also seen. Apoptotic cell death of transplanted RPE, as judged by TUNEL staining was observed rarely. RPE transplants imposed no adverse effect on the overlying retina. RPE survival appeared to be similar with each of the three vehicles for cell delivery.
This article has been cited by other articles:
![]() |
L. Cong, D. Sun, Z. Zhang, W. Jiao, L. J. Rizzolo, and S. Peng A Novel Rabbit Model for Studying RPE Transplantation Invest. Ophthalmol. Vis. Sci., September 1, 2008; 49(9): 4115 - 4125. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Wang, B. Lu, P. Wood, and R. D. Lund Grafting of ARPE-19 and Schwann Cells to the Subretinal Space in RCS Rats Invest. Ophthalmol. Vis. Sci., July 1, 2005; 46(7): 2552 - 2560. [Abstract] [Full Text] [PDF] |
||||
![]() |
K. A. Hansen, I. K. Sugino, F. Yagi, H. Wang, I. Tsukahara, V. Gullapalli, J. Bennett, and M. A. Zarbin Adeno-Associated Virus Encoding Green Fluorescent Protein as a Label for Retinal Pigment Epithelium Invest. Ophthalmol. Vis. Sci., February 1, 2003; 44(2): 772 - 780. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. Gouras, J. Kong, and S. H. Tsang Retinal Degeneration and RPE Transplantation in Rpe65-/- Mice Invest. Ophthalmol. Vis. Sci., October 1, 2002; 43(10): 3307 - 3311. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |