Why adolescent POTS often starts after stress: a possible brainstem–vagus nerve link
Pediatric POTS: does a periaqueductal gray-vagus nerve interface malfunction explain the natural history with its numerous co-morbidities ?
This research looks at whether a midbrain area called the periaqueductal gray and the vagus nerve stay in a chronic 'threat' state after an infection or injury and cause POTS in adolescents, mostly teen girls.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Virginia Commonwealth University NIH-funded |
| Lab location | 1 site (Richmond, United States) |
| Project ID | NIH-11308732 on NIH RePORTER |
What this research studies
If you join, researchers will enroll adolescents with POTS and compare them to healthy teens using tilt‑table testing and other autonomic measurements. They will use brain imaging and nerve function tests to study the periaqueductal gray and the vagus nerve and collect histories of infections, trauma, and overlapping conditions like migraine or IBS. The team will look for physiological signs that the brain's 'life‑or‑death' circuitry failed to reset after a threat and follow how symptoms change over time. Findings across participants will be used to see whether this pattern explains the start of POTS and its common co‑morbidities.
Who could benefit from this research
Good fit: Ideal participants are adolescents—especially post‑menarche females—who meet POTS criteria (about a 40 bpm heart‑rate rise on tilt without a blood‑pressure drop) and often developed symptoms after an infection or injury.
Not a fit: People without POTS, those whose symptoms are explained by other cardiac or structural disorders, or adults well outside the adolescent age range would not be expected to benefit directly from this work.
Why it matters
Potential benefit: If correct, this could point to new treatments aimed at calming the brain–vagus 'threat' response to reduce dizziness, fatigue, and overlapping pain conditions in teens with POTS.
How similar studies have performed: Previous research has noted links between infections, autonomic dysfunction, and overlapping pain disorders, but this specific periaqueductal gray–vagus nerve chronic 'threat' model is a new idea that remains largely untested in humans.
Where this research is happening
Richmond, United States
- Virginia Commonwealth University — Richmond, United States (Active)
Researchers
- Principal investigator: Chelimsky, Gisela — Virginia Commonwealth University
- Study coordinator: Chelimsky, Gisela
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.