Gum disease and immune changes in Alzheimer's brains
Official title: IMPORTANCE OF PERIODONTITIS IN THE INNATE IMMUNE REGULATION OF ALZHEIMER'S DISEASE
Funded at University of Alabama at Birmingham · NIH-11299499 · Data updated 2026-11-12
This project looks at whether oral infections from gum disease make Alzheimer's worse by changing brain immune cells and inflammation in older adults.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Alabama at Birmingham NIH-funded |
| Lab location | 1 site (Birmingham, United States) |
| Project start | June 1, 2023 |
| Project end | February 29, 2028 |
| Funding year | 2026 |
| Award (this year) | $371,250 |
| NIH project number | 5R01AG078708-04 |
| Project ID | NIH-11299499 on NIH RePORTER |
Who could benefit from this research
✓Could help
Ideal candidates for future related trials would be older adults with periodontitis or people at increased Alzheimer's risk (for example, with mild cognitive changes or family history).
✕Less likely to help
People without gum disease, much younger adults, or patients whose Alzheimer's is driven by unrelated mechanisms may not see direct benefit from these findings.
What this research studies
From a patient point of view, researchers are testing how a common gum bug, Porphyromonas gingivalis, might travel to the brain and worsen Alzheimer-related changes. They will use oral infection experiments in Alzheimer's-model mice to measure amyloid buildup, brain inflammation, microglial activation, and synapse loss. The team will focus on the complement protein C1q to see if it helps drive harmful microglial responses after gum infection. Results aim to clarify whether periodontitis can raise Alzheimer's risk or speed disease and to guide future patient-focused prevention or treatment efforts.
Why it matters
Potential benefit: If true, this work could point to gum disease and related immune signals as preventable or treatable contributors to Alzheimer's, suggesting new prevention or therapy strategies.
How similar studies have gone: Epidemiologic data and prior animal studies have linked Porphyromonas gingivalis and periodontal inflammation to worsened Alzheimer's pathology, but translating this into human treatments is still novel.
Where this research is happening
-
University of Alabama at Birmingham
Birmingham, United States Active
Researchers
- Principal investigator: Zhang, Ping — University of Alabama at Birmingham
- Study coordinator: Zhang, Ping
Related research
Other NIH-funded projects on the same topics.
-
How gum disease affects Alzheimer's disease progression
This study is looking at how gum disease might be connected to Alzheimer's disease, especially how a certain bacteria could affect the brain and make symptoms worse, and it's for anyone interested in understanding how taking care of your gums could help with brain health.
-
Understanding how brain activity changes may drive Alzheimer’s disease progression in a mouse model
Researchers are testing how changes in brain signals and protein cleanup processes affect the development of Alzheimer’s disease in mice.
-
Thiamine-boosting therapy for Alzheimer’s: understanding how benfotiamine may reduce harmful AGE in DP patients
A medication-based approach using high-dose vitamin B1 (benfotiamine) is studied to help people with Alzheimer's by reducing harmful sugar-related molecules.
-
Non-invasive tears biomarker for early Alzheimer's in LMICs
A low-cost, tear-based biomarker approach aims to detect early Alzheimer’s disease in older adults in Peru and similar settings.
-
Turning APOE4 into protective APOE2 or APOE3Christchurch to help with Alzheimer’s
A patient-facing explanation of a treatment idea that aims to change a genetic risk factor for Alzheimer's disease in the brain.
-
Telomerase in Alzheimer’s Disease: how aging biology could influence memory and brain health
Researchers are exploring a new brain-aging mechanism linked to telomerase, with potential to slow or modify Alzheimer’s disease in people and improve cognitive function.
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.