VEGF mRNA and protein concentrations in the developing human eye.

Abstract:

BACKGROUND:Vascular endothelial growth factor (VEGF), a well-characterized regulator of angiogenesis, has been mechanistically implicated in retinal neovascularization and in the pathogenesis of retinopathy of prematurity. However, the ontogeny of VEGF expression in the human fetal retina is not well known. Because retinal vasculature grows with gestational maturation, we hypothesized that VEGF expression also increases in the midgestation human fetal eye as a function of gestational age. METHODS:To identify changes in VEGF gene expression during normal human development, we measured VEGF mRNA by quantitative PCR and measured VEGF protein by enzyme-linked immunosorbent assay and western blots in 10-24 wk gestation fetal vitreous, retina, and serum. RESULTS:VEGF mRNA expression in the retina increased with gestational age. VEGF isoform A, particularly its VEGF121 splice variant, contributed to this positive correlation. Consistent with these findings, we detected increasing VEGF121 protein concentrations in vitreous humor from fetuses of 10-24 wk gestation, while VEGF concentrations decreased in fetal serum. CONCLUSION:VEGF121 mRNA and protein concentrations increase with increasing gestational age in the developing human retina. We speculate that VEGF plays an important role in normal retinal vascular development, and that preterm delivery affects production of this vascular growth factor.

journal_name

Pediatr Res

journal_title

Pediatric research

authors

Ma IT,McConaghy S,Namachivayam K,Halloran BA,Kurundkar AR,MohanKumar K,Maheshwari A,Ohls RK

doi

10.1038/pr.2015.15

subject

Has Abstract

pub_date

2015-04-01 00:00:00

pages

500-5

issue

4

eissn

0031-3998

issn

1530-0447

pii

pr201515

journal_volume

77

pub_type

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