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Abstract
A controlled and reproducible angiogenic stimulus was induced in the rabbit cornea by Elvax-40 implants sequestering either 500 ng of lipopolysaccharide (LPS) or 500 ng of basic fibroblast growth factor (bFGF).
The effect of IFNα and IFNβ on angiogenesis was studied by inserting implants sequestering 500 ng of these cytokines (approximately 104 Units/implant) adjacent to the LPS or bFGF implants. Interferon-α or γ did not inhibit the bFGF-induced angiogenesis, and in most of these experiments an enhancing effect was observed. This enhancement was not statistically significant. The LPS-induced angiogenesis, however, was slightly inhibited in the presence of either interferon-α or γ but these differences were not statistically significant with p=0.1 only. Both cytokines were non angiogenic and there was no detectable difference between them regarding their effect on the angiogenic process induced by either bFGF or LPS.