How early-life exposure to pollutants and heavy metals can cause lasting brain and behavior problems
Project 2: Persisting Neurobehavioral Dysfunction Caused by Interacting Toxicant Exposures During Development: Mechanistic and Treatment Studies with Zebrafish and Rats
This project looks at whether combined early-life exposures to common pollution chemicals and metals lead to lasting problems with movement, mood, and thinking.
Quick facts
| Grant type | NIH-funded research |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Duke University NIH-funded |
| Lab location | 1 site (Durham, United States) |
| Project ID | NIH-11126692 on NIH RePORTER |
What this research studies
Researchers use animal models (zebrafish and rats) to recreate early developmental exposure to two polycyclic aromatic hydrocarbons (benzo[a]pyrene and fluoranthene) and two heavy metals (lead and cadmium) and then measure persistent changes in movement, emotional behavior, and learning. The team traces effects from molecules to behavior, examining DNA methylation, mitochondrial oxidative stress, neurotransmitter systems (dopamine, serotonin, acetylcholine), and microglial-driven inflammation (IL-1β, IL-6, IL-10). They specifically test how combinations of these toxicants interact to worsen outcomes and whether behavioral stress makes effects stronger. The project also explores potential treatment approaches in the animal models that could inform future human interventions.
Who could benefit from this research
Good fit: People who had known or suspected early-life exposure to PAHs or heavy metals and who now have persistent movement, mood, or cognitive symptoms would be the most likely beneficiaries of follow-up human studies informed by this work.
Not a fit: Patients whose problems are caused by purely genetic neurodevelopmental disorders or late-life neurodegenerative diseases unrelated to toxicant exposure may not benefit from these findings.
Why it matters
Potential benefit: If successful, this work could reveal mechanisms and candidate treatments to prevent or reduce long-term cognitive, emotional, or motor problems linked to early pollutant and metal exposure.
How similar studies have performed: Previous animal work shows single pollutants can cause lasting neurobehavioral harm, but analyzing combined pollutant–metal interactions and testing treatments in this way is relatively novel.
Where this research is happening
Durham, United States
- Duke University — Durham, United States (Active)
Researchers
- Principal investigator: Levin, Edward D — Duke University
- Study coordinator: Levin, Edward D
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.