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Journal of Neural Transplantation
Volume 1, Issue 3-4, Pages 87-93

Developing Retina and PNS Segments for Transplantation Into the Adult Host Eye: Reconstruction of the Mammalian Visual System. 2. Results

1Department of Anatomy and Neuroscience, New York College of Osteopathic Medicine, Old Westbury, NY 11568, USA
2Department of Bioengineering, School of Engineering, The Cooper Union, 51 Astor Place, New York, NY 10003, USA

Copyright © 1989 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The previous companion paper detailed, a technique which allowed embryonic retinal ganglion cell axons to grow from the anterior eye chamber across a PNS bridge, and enter the adult host forebrain. Embryonic eyes of E11, E14, E18 and E21 animals were sutured to a PNS bridge, the embryonic eye implanted into an adult host eye, and the distal end of the bridge implanted into the host forebrain. Results indicate that when eyes of all ages are used for implantation, axons could be observed to grow from the embryonic retina, through the bridge and into the adult host forebrain. The axons extend for long distances in the host brain, reach various layers of the cortex and in a few animals enter the caudate/putamen complex. Control studies show that the bridge is used exclusively as the conduit to the brain, as opposed to the degenerated host optic nerve. Thus, the results presented in this paper indicate that successful grafting and transplantation is possible using the aforementioned technique. The results suggest that the described visual system reconstruction technique can be used for the study of development and transplantation in this system.