VEGF and PEDF Levels in a Rat Model of Retinopathy of Prematurity
Author Information
Author(s): Hartmann John S., Thompson Hilary, Wang Haibo, Kanekar Shami, Huang Wei, Budd Steven J., Hartnett M. Elizabeth
Primary Institution: University of North Carolina, Department of Ophthalmology
Hypothesis
The study aims to determine the effects of oxygen fluctuations on PEDF and VEGF/PEDF ratios in a rat model of retinopathy of prematurity.
Conclusion
Increased expression levels of VEGF and PEDF are associated with older postnatal day age or with exposure to fluctuations in oxygen in the ROP model compared to RA.
Supporting Evidence
- Older age was associated with increased PEDF mRNA and protein levels.
- Exposure to oxygen fluctuations increased PEDF and VEGF protein levels.
- The VEGF/PEDF ratio indicated a shift towards angiogenesis at certain postnatal days.
Takeaway
The study found that the levels of two important proteins, VEGF and PEDF, change with age and oxygen levels in baby rats, which helps us understand eye problems in premature infants.
Methodology
The study used real-time PCR and ELISA to measure mRNA and protein levels of PEDF and VEGF in rat pups raised in different oxygen conditions.
Limitations
The findings are associations and not causative, and further study is warranted.
Participant Demographics
Sprague-Dawley rat pups, with litters of 16 newborns used for the study.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.001
Want to read the original?
Access the complete publication on the publisher's website