Purpose. To investigate the inhibitory effect of d-α-tocopheryl acid succinate (vitamin E succinate)(VES) on angiogenesis in a rabbit corneal neovascularization model. Methods. A corneal micropocket assay was used in rabbits: 750ng of VES (n=10) or other vitamin E (vit E) analogues, vit E nicotinate, γ-tocopherol, vitamin E, or phosphate-buffered saline(PBS) (n=5 each) were randomly put in ethylenevinylacetate copolymer (EVA) pellates which were implanted in corneal micropockets in rabbits. The pockets were dissected from the center of the cornea stopping 2mm short of the limbus. Each eye was implanted with another pellet containing 200ng basic fibroblast growth factor (bFGF) central to the first pellet. Each eye was examined daily, for angiogenesis by measuring the length of new blood vessels. A histopathological analysis was also performed by electron microscopy (EM). Results. Dense neovascularization was observed in all rabits' eyes which were implanted with bFGF and PBS pellets. However the corneas implanted with VES pellets had significantly reduced neovascularization compared with corneas treated with other vit E analogues or PBS. EM study revealed less inflammation with more apoptotic cells in corneas treated VES. Conclusion. VES has an inhibitory effect on corneal angiogenesis. VES has a therapeutic potential for ocular angiogenesis.
|Journal||Investigative Ophthalmology and Visual Science|
|Publication status||Published - Feb 15 1996|
All Science Journal Classification (ASJC) codes
- Sensory Systems
- Cellular and Molecular Neuroscience