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. 1997 Oct;124(4):447-54.
doi: 10.1016/s0002-9394(14)70861-x.

Vascular endothelial growth factor and fibroblast growth factor 5 are colocalized in vascular and avascular epiretinal membranes

S A Schneeberger  1 , L M Hjelmeland, R P Tucker, L S Morse
Affiliations

Vascular endothelial growth factor and fibroblast growth factor 5 are colocalized in vascular and avascular epiretinal membranes

S A Schneeberger et al. Am J Ophthalmol. 1997 Oct.

Abstract

Purpose: To determine by immunocytochemical analysis of epiretinal membranes whether vascular endothelial growth factor and the fibroblast growth factor FGF-5 are present in patients with proliferative diabetic retinopathy or proliferative vitreoretinopathy.

Methods: Human surgical specimens of epiretinal membranes were obtained from 11 eyes with proliferative diabetic retinopathy and five eyes with proliferative vitreoretinopathy. Sections were immunostained with an affinity-purified antibody against an internal sequence of human FGF-5 and with a commercially available affinity-purified antibody corresponding to the first 20 residues of human vascular endothelial growth factor. Slides were visualized using avidin-biotin-peroxidase complex. Control studies were performed with nonimmune immunoglobulin G and preabsorbed vascular endothelial growth factor and FGF-5 antibody, respectively.

Results: Immunoreactive FGF-5 is present in most cells, including endothelial cells of vascular and avascular epiretinal membranes, but seems to be absent from the extracellular matrix. A similar staining pattern was observed for vascular endothelial growth factor.

Conclusions: Vascular endothelial growth factor and FGF-5 are remarkably colocalized in both vascular and avascular epiretinal membranes arising from proliferative diabetic retinopathy and proliferative vitreoretinopathy, respectively. This result questions the concept that the presence of a single angiogenic factor determines the vascular status of an epiretinal proliferation.

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