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Funded Studies

Neuromelanin in Circulating Phagocytes May Reveal Early Neurodegeneration in Parkinson's Disease Supplement

Promising Outcomes of Original Grant:
The pigment neuromelanin is specifically found in the nerves destroyed by Parkinson’s disease. We developed a way to measure neuromelanin and then looked for neuromelanin in white blood cells in the blood stream of Parkinson’s disease patients. We were able to detect neuromelanin in these white blood cells (confirming our hypothesis) and may be able to use this to diagnose Parkinson’s disease before motor symptoms arise.

Objectives for Supplemental Investigation:           
We will now study whether we can detect neuromelanin and other brain materials in the white blood cells of pre-clinical models. These models will be injected with a toxin that causes PD, and, at various times after the injection, we will take blood samples for neuromelanin measurement.

Importance of This Research for the Development of a New PD Therapy:      
Neuroprotective drugs may prevent or delay the development of Parkinson’s disease, but by the time the diagnosis is made it may already be too late as many nerve cells have died. This research may produce a biochemical test for early diagnosis of Parkinson’s disease and facilitate preventive or disease-delaying drug therapy.


Researchers

  • Ramesh Chand Nayak, PhD

    Tuscon, AZ United States


  • Lalitha Madhavan, MD, PhD

    Tucson, AZ United States


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