Stress-driven brain signals that can amplify pain
Interoception and Pain: Noradrenergic Modulation of Nociceptive Transmission in the Parabrachial Nucleus
This work looks at whether stress-activated noradrenergic brain pathways make pain signals stronger for people who experience chronic stress and pain.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Maryland Baltimore NIH-funded |
| Lab location | 1 site (Baltimore, United States) |
| Project ID | NIH-11307549 on NIH RePORTER |
What this research studies
From a patient's point of view, researchers are using animal models to map how stress-related neurons in the brainstem (catecholaminergic NTS cells) send noradrenaline to the lateral parabrachial nucleus and change pain signaling. They will use techniques like optogenetics to turn those neurons on and off, record neuronal activity, and measure noradrenaline release while applying noxious stimuli and chronic stress paradigms. The team will observe pain-related behaviors in animals to see if altering this pathway changes pain responses. The goal is to connect stress-driven internal signals to increased pain and identify points where intervention might reduce stress-amplified pain.
Who could benefit from this research
Good fit: People with chronic pain whose symptoms reliably worsen during stress or who have comorbid anxiety or stress-related disorders would be the most relevant group for future translation of these findings.
Not a fit: Patients whose pain is purely mechanical or clearly unrelated to stress or internal bodily signals may be less likely to benefit directly from this line of research.
Why it matters
Potential benefit: If successful, this work could reveal new brain targets to reduce pain that becomes worse with chronic stress, guiding future treatments for stressed patients with chronic pain.
How similar studies have performed: Prior animal studies support a role for brainstem noradrenergic pathways in pain modulation, but the specific circuit linking NTS catecholaminergic inputs to parabrachial nociceptive signaling is a novel focus.
Where this research is happening
Baltimore, United States
- University of Maryland Baltimore — Baltimore, United States (Active)
Researchers
- Principal investigator: Masri, Radi — University of Maryland Baltimore
- Study coordinator: Masri, Radi
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.