Scientists at UC Irvine have identified a specific polyunsaturated fatty acid that reverses age-related vision decline in mice by targeting the ELOVL2 “aging gene” without relying on DHA.
Why DHA alone failed to improve vision in aging mice
Earlier research showed that increasing ELOVL2 activity raised DHA levels in the retina and improved visual function, but the newer study found that supplementing with DHA did not produce the same effect. This indicated that DHA by itself cannot reverse vision loss, prompting researchers to seek alternative fatty acids that could bypass the need for the ELOVL2 enzyme.
How the fatty acid therapy works in the retina
As the body ages, lipid metabolism changes reduce levels of very-long-chain polyunsaturated fatty acids (VLC-PUFAs) in the retina, which are essential for maintaining vision. The ELOVL2 gene plays a central role in producing both VLC-PUFAs and DHA, making it a key factor in eye aging. By injecting older mice with a specific polyunsaturated fatty acid—not DHA—researchers restored visual function and reversed cellular aging signs in the retina.
What this means for future treatments of age-related vision loss
The findings suggest a potential therapy for slowing or reversing vision decline and preventing conditions like age-related macular degeneration (AMD). The study, published in Science Translational Medicine, involved collaborators from UC Irvine, the Polish Academy of Sciences, and the Health and Medical University in Potsdam, Germany. While the results are promising, the researchers emphasize this is a proof-of-concept in mice, and further study is needed to determine if the approach will work in humans.
What specific fatty acid was used in the study?
The source does not name the specific polyunsaturated fatty acid used in the injections that improved vision in mice.
Is this treatment ready for human employ?
No, the study was conducted in mice and represents a proof-of-concept. researchers state that further study is needed to determine if the approach will work in humans.