Brain pathways that control tear production
Neural Circuits Controlling Lacrimation
Researchers are mapping and manipulating brain nerve cells that make tears to help people with dry eyes or low tear production.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Washington University NIH-funded |
| Lab location | 1 site (Saint Louis, United States) |
| Project ID | NIH-11089396 on NIH RePORTER |
What this research studies
They are studying a small group of nerve cells in the brainstem that appear to control tear production by doing detailed experiments in mice. First they will map where these nerve cells send signals and measure how they behave. Then they will selectively turn these cells on or off to see how that changes tear production. Finally they will test whether signals from the surface of the eye reach these brain cells to trigger reflex tearing.
Who could benefit from this research
Good fit: People with chronic dry eye, Sjögren's syndrome, congenital alacrima, or other conditions linked to reduced tear production are the likely eventual beneficiaries.
Not a fit: People whose eye problems are caused by structural issues (like blocked tear ducts), eyelid problems, infections, or who need immediate treatments are unlikely to benefit directly from this basic mouse research.
Why it matters
Potential benefit: If successful, this work could point to new targets for treatments that restore normal tear production in conditions like dry eye and Sjögren's syndrome.
How similar studies have performed: Previous animal studies suggested the superior salivatory nucleus influences tearing, but direct molecular and genetic proof in mice is a novel and early-stage advance.
Where this research is happening
Saint Louis, United States
- Washington University — Saint Louis, United States (Active)
Researchers
- Principal investigator: Liu, Qin — Washington University
- Study coordinator: Liu, Qin
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.