Sex differences in how the brain releases and clears dopamine
Sex-biased, region-specific regulation of DA release and clearance
This research looks at how male and female brains release and remove dopamine, which could help people with addiction or ADHD.
Quick facts
| Grant type | R21 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Iowa NIH-funded |
| Lab location | 1 site (Iowa City, United States) |
| Project ID | NIH-11314582 on NIH RePORTER |
What this research studies
From a patient's perspective, researchers will compare males and females using animal models to measure dopamine release and clearance in specific brain regions tied to reward, such as the nucleus accumbens. They will give stimulant exposure (like amphetamine) in the lab and use precise neurochemical techniques to track how dopamine is released and taken back up. The team will also study the influence of sex hormones and genetic/gonadal sex on those processes. The goal is to explain why men and women differ in stimulant responses and risk for conditions like substance use disorders and ADHD.
Who could benefit from this research
Good fit: This grant does not directly enroll patients, but adults with stimulant use disorder or ADHD would be the populations most likely to benefit from later human studies informed by these findings.
Not a fit: People whose conditions are not related to dopamine signaling, such as purely structural brain injuries or non-neurological illnesses, are unlikely to receive direct benefit from this research.
Why it matters
Potential benefit: If successful, this work could clarify sex-specific mechanisms behind stimulant response and lead to more tailored prevention or treatment strategies for addiction and ADHD.
How similar studies have performed: Prior animal experiments and human imaging studies have reported sex differences in dopamine responses to stimulants, but this project seeks to map region- and sex-specific mechanisms with greater mechanistic detail.
Where this research is happening
Iowa City, United States
- University of Iowa — Iowa City, United States (Active)
Researchers
- Principal investigator: Stewart, Adele — University of Iowa
- Study coordinator: Stewart, Adele
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.