Researchers at the University of California, Irvine have found that supplementing the retina with a specific polyunsaturated fatty acid can reverse age-related vision decline in mice by targeting the ELOVL2 aging gene.
How the fatty acid therapy works in aging eyes
The study builds on prior research showing that declining activity of the ELOVL2 enzyme reduces levels of very-long-chain polyunsaturated fatty acids (VLC-PUFAs) and docosahexaenoic acid (DHA) in the retina, contributing to vision loss with age. In earlier work, increasing ELOVL2 activity boosted DHA and improved visual function in older mice. The recent approach bypasses the require for ELOVL2 by directly injecting a specific polyunsaturated fatty acid into the eye, which restored visual performance in aged animals without relying on the enzyme.
Why DHA alone was insufficient for vision recovery
Researchers observed that DHA supplementation did not produce the same restorative effect as the tested fatty acid, confirming that DHA alone cannot reverse age-related vision decline. This finding aligns with other studies questioning DHA’s efficacy in slowing age-related macular degeneration progression. The identified fatty acid appears to address lipid metabolism deficits in the retina more effectively than DHA, offering a potential pathway for therapies targeting retinal aging.
Implications for treating age-related eye conditions
The proof-of-concept suggests that lipid injection could develop into a viable strategy for slowing or reversing vision loss associated with aging, while also helping prevent conditions like age-related macular degeneration. The research involved collaborators from UC Irvine, the Polish Academy of Sciences, and the Health and Medical University in Potsdam, Germany, and was published in Science Translational Medicine. Further studies will be needed to determine if the approach translates to human applications.
What specific fatty acid was used in the study?
The source does not name the specific polyunsaturated fatty acid tested in the experiments.
Has this treatment been tested in humans?
The study was conducted in mice; there is no mention of human trials in the source material.