Adult rabbit retinal transplants

Research output: Contribution to journalArticle

Abstract

PURPOSE: To study the survival of adult retinal grafts prepared in a physiologically optimized way.

METHODS: Twenty-three rabbits received an adult full-thickness rabbit retinal transplant positioned under the host retina, using a vitrectomy technique. The transplants were prepared using a procedure based on a previously described in vitro model used for physiological experiments on the adult retina. Five rabbits received a fragmented graft. All grafts were prelabeled with 4',6-diaminidin-2-phenylindoldihydrochloride (DAPI) to allow identification. The eyes were examined by light and fluorescence microscopy 6 to 174 days after surgery. To assess the amount of cell death in the graft before actual transplantation, in vitro experiments were performed. The extent of cell death in retinas prepared by the optimized protocol was examined and compared with a simpler preparation previously used successfully for embryonic grafts. The amount of cell death in the in vitro experiments was evaluated using a fluorescent green nucleic acid stain that penetrates dying cells.

RESULTS: In 21 of the 23 animals that received full-thickness grafts prepared in an optimized way, the transplant survived. Sixteen grafts, including all four with a 174-day survival time, displayed normal morphology, with all retinal layers preserved. The fragmented grafts survived poorly. The in vitro experiments showed minimal cell death in retinas prepared according to the optimized protocol, whereas control retinas displayed extensive cell death after 5 hours.

CONCLUSIONS: The results showed that it is possible to transplant adult retina in the rabbit and that the grafts survive well if they are prepared under physiologically optimized conditions and the integrity of the grafted tissue is kept intact.

Details

Authors
Organisations
External organisations
  • Skåne University Hospital
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Ophthalmology

Keywords

  • Animals, Cell Death, Fluorescent Dyes, Graft Survival, Indoles, Rabbits, Retina, Specimen Handling, Tissue Transplantation, Journal Article, Research Support, Non-U.S. Gov't
Original languageEnglish
Pages (from-to)2632-8
Number of pages7
JournalInvestigative Ophthalmology and Visual Science
Volume42
Issue number11
Publication statusPublished - 2001 Oct
Publication categoryResearch
Peer-reviewedYes