How common metal mixtures may affect Alzheimer’s risk
Neurotoxicity due to Environmental complex Metal Mixtures Exposure
['FUNDING_R01'] · JOHNS HOPKINS UNIVERSITY · NIH-10795773
This work looks at whether everyday exposure to a mix of metals (lead, arsenic, cadmium, chromium) harms adult brains and contributes to Alzheimer’s-related memory and thinking problems.
Quick facts
| Phase | ['FUNDING_R01'] |
|---|---|
| Study type | Nih_funding |
| Sex | All |
| Sponsor | JOHNS HOPKINS UNIVERSITY (nih funded) |
| Locations | 1 site (BALTIMORE, UNITED STATES) |
| Trial ID | NIH-10795773 on ClinicalTrials.gov |
What this research studies
Researchers use a combination of adult mouse experiments and human-derived brain organoids to mimic real-world exposure to the four-metal mixture called PACC and to study its effects on cognition and brain cells. Preliminary mouse data show chronic PACC exposure in adulthood produces sex-specific problems with memory, anxiety, and biomarkers of neuronal damage. In organoids the mixture increased oxidative stress and reduced markers of synapses and neural progenitors, and the team will study pathways such as Nrf2 and neurofilament light to understand mechanisms. The overall aim is to map the adverse outcome pathways linking metal mixtures to Alzheimer-related neurodegeneration so findings can inform risk assessment and prevention.
Who could benefit from this research
Good fit: Adults concerned about metal exposures or people at risk for or in early stages of Alzheimer’s disease — particularly those with known exposure to lead, arsenic, cadmium, or chromium — would be most relevant to the research findings.
Not a fit: Children, people with no history of relevant metal exposure, or those with very advanced Alzheimer’s disease are unlikely to see direct benefits from this grant’s experiments.
Why it matters
Potential benefit: If successful, this work could identify modifiable environmental risk factors and biological markers that help prevent or slow Alzheimer’s-related decline.
How similar studies have performed: Previous studies have linked single metals to cognitive decline, but examining combined, real-world metal mixtures is relatively new and less well tested.
Where this research is happening
BALTIMORE, UNITED STATES
- JOHNS HOPKINS UNIVERSITY — BALTIMORE, UNITED STATES (ACTIVE)
Researchers
- Principal investigator: SILLE, FENNA — JOHNS HOPKINS UNIVERSITY
- Study coordinator: SILLE, FENNA
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.
Conditions: Alzheimer disease dementia