Effects of Aging on Retinal Gene Expression Related to Inflammation and Vascular Health
Author Information
Author(s): Van Kirk Colleen A., VanGuilder Heather D., Young Megan, Farley Julie A., Sonntag William E., Freeman Willard M.
Primary Institution: Penn State College of Medicine
Hypothesis
Diabetes-associated pathologies reflect an 'advanced aging' phenotype in retinal neurovascular and inflammatory processes.
Conclusion
The study found that aging and diabetes share some common molecular alterations in retinal gene expression, but they are not identical.
Supporting Evidence
- Eleven inflammation- and microvascular-related genes showed increased expression in aged rats.
- Some genes displayed patterns of expression different from those seen in diabetes.
- Commonalities in retinal age-related and diabetes-induced molecular alterations were observed.
Takeaway
As we get older, our eyes show changes similar to those seen in diabetes, which can affect our vision.
Methodology
The study assessed the expression of 36 genes in retinas of young, adult, and aged rats using quantitative PCR.
Limitations
The study focused on a predetermined set of genes and did not explore genome-wide comparisons.
Participant Demographics
Fischer 344 x Brown Norway (F1) hybrid male rats aged 3, 12, and 26 months.
Statistical Information
P-Value
0.028
Statistical Significance
p<0.05
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