How aging weakens lens antioxidants and leads to cataracts and presbyopia
Mechanisms and consequences of impaired glutathione homeostasis in the aging lens
['FUNDING_R01'] · AUGUSTA UNIVERSITY · NIH-11258492
This project looks at whether drops in the antioxidant glutathione and the enzyme GPX4 in older lenses cause membrane damage that contributes to cataracts and trouble focusing up close.
Quick facts
| Phase | ['FUNDING_R01'] |
|---|---|
| Study type | Nih_funding |
| Sex | All |
| Sponsor | AUGUSTA UNIVERSITY (nih funded) |
| Locations | 1 site (AUGUSTA, UNITED STATES) |
| Trial ID | NIH-11258492 on ClinicalTrials.gov |
What this research studies
From my perspective as a patient, the team will study lens cells grown in the lab and use mouse models to mimic aging changes in the lens. They will reduce GPX4 and glutathione levels to see if that causes lipid damage, membrane breakdown, and a form of cell death called ferroptosis. The researchers will measure changes in membrane lipids, lens stiffness, transparency, and how membrane proteins like AQP0 are affected. The goal is to connect molecular damage to the physical changes that cause cataracts and presbyopia.
Who could benefit from this research
Good fit: People with age-related cataracts or early presbyopia would be the most relevant group for findings from this work.
Not a fit: Patients with non–age-related lens problems such as congenital cataracts or traumatic lens injury may not benefit from these findings.
Why it matters
Potential benefit: If successful, this work could point to ways to protect lens membranes and slow or prevent age-related cataracts and loss of focusing ability.
How similar studies have performed: Prior laboratory studies support a protective role for glutathione and GPX4 against lens lipid damage, but directly linking these mechanisms to lens stiffness and opacity using targeted GPX4 models is a newer approach.
Where this research is happening
AUGUSTA, UNITED STATES
- AUGUSTA UNIVERSITY — AUGUSTA, UNITED STATES (ACTIVE)
Researchers
- Principal investigator: FAN, XINGJUN — AUGUSTA UNIVERSITY
- Study coordinator: FAN, XINGJUN
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page below.