How methamphetamine changes frontal brain cells and affects thinking
Methamphetamine Effects on Prefrontal Cortical PV+ Interneurons and Resulting Cognitive Deficits
This project looks at how methamphetamine alters certain inhibitory brain cells in the front part of the brain and how that may cause problems with memory, attention, and impulse control in people with addiction or related neuropsychiatric conditions.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Medical University of South Carolina NIH-funded |
| Lab location | 1 site (Charleston, United States) |
| Project ID | NIH-11141921 on NIH RePORTER |
What this research studies
The team uses a rat model where animals self-administer methamphetamine to mimic human addiction and its brain effects. They record activity from parvalbumin-positive fast-spiking interneurons (PV+FSIs) in the prefrontal cortex and measure the balance between excitation and inhibition. Behavioral tests measure working memory, attention, and impulsivity to link cell-level changes to thinking and behavior. The researchers will test whether dopamine D1 receptor signaling increases inhibitory transmission and whether reversing that change can restore normal brain activity and cognition.
Who could benefit from this research
Good fit: People with current or past methamphetamine use who have working memory, attention, or impulse-control problems, and individuals with autism spectrum–related cognitive deficits, would be the most relevant groups.
Not a fit: People whose cognitive issues are due to unrelated causes (for example, stroke or advanced neurodegenerative disease) or who do not have methamphetamine exposure are unlikely to benefit directly.
Why it matters
Potential benefit: If successful, the work could point to new targets to improve memory, attention, and impulse control in people with methamphetamine addiction or related cognitive problems.
How similar studies have performed: Previous rodent studies have shown that repeated psychostimulant exposure can produce hypofrontality and working memory deficits, but focusing on PV+ interneurons and D1 receptor–driven increases in inhibition is a more specific and less-tested mechanistic approach.
Where this research is happening
Charleston, United States
- Medical University of South Carolina — Charleston, United States (Active)
Researchers
- Principal investigator: Lavin, Antonieta — Medical University of South Carolina
- Study coordinator: Lavin, Antonieta
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.