NIH-funded research R01 grant

Protein aggregation and brain changes in Parkinson’s-related dementia

Official title: Protein Aggregation and Neurotransmitter Deficits in Parkinson Disease

Funded at Washington University · NIH-11575370 · Data updated 2026-11-12

A study of brain tissue from people with Parkinson’s to understand how protein clumps and nerve cell loss relate to dementia.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionWashington University
NIH-funded
Lab location1 site (Saint Louis, United States)
Project startAugust 1, 2016
Project endNovember 30, 2027
Funding year2026
Award (this year)$147,725
NIH project number3R01NS097799-09S1
Project IDNIH-11575370 on NIH RePORTER

Who could benefit from this research

Could help

Ideal participants are individuals with Parkinson’s disease who develop dementia and have agreed to brain donation for research.

Less likely to help

Results may not directly benefit individuals who do not develop dementia or who do not contribute brain tissue for research.

What this research studies

This project will study brain tissue from autopsies of people with Parkinson’s disease who had dementia to map where alpha-synuclein, amyloid beta, and tau accumulate and how this relates to nerve cell loss and brain region connections. Using postmortem analysis, researchers will quantify pathological proteins and assess loss of synapses and projections from key brain circuits. The goal is to connect these biological changes with cognitive and behavioral symptoms observed before death and with gait changes tracked in longitudinal studies. The work relies on samples from a longitudinal PD cohort, linking clinical data with tissue measurements.

Why it matters

Potential benefit: Understanding the brain changes in PD-related dementia could guide development of targeted therapies to slow or alter cognitive decline in Parkinson’s patients.

How similar studies have gone: Similar postmortem studies have clarified how multiple proteins associate with neurodegeneration in PD and ADRD, supporting this approach as informative.

Where this research is happening

  • Washington University
    Saint Louis, United States
    Active

Researchers

  • Principal investigator: Kotzbauer, Paul T — Washington University
  • Study coordinator: Kotzbauer, Paul T

Related research

Other NIH-funded projects on the same topics.

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.