A blood test for Parkinson ’s disease?

Parkinson’s disease, a brain disorder that gradually leads to difficulty moving, tremors, and usually dementia by the end, is often difficult to diagnose early in its yearslong progression. That makes testing experimental treatments challenging and slows people from getting existing drugs, which can’t stop the ongoing death of brain cells but temporarily improve many of the resulting symptoms. Now, a study using rodents and tissue from diagnosed Parkinson’s patients suggests DNA damage spotted in blood samples offers a simple way to diagnose the disease early. Although the potential test needs to be validated in clinical studies, the detected DNA damage joins a “flurry” of other biomarkers recently identified for Parkinson’s and “adds to our ability to state confidently that an individual has Parkinson’s disease or not,” says neurodegeneration researcher Mark Cookson of the National Institute on Aging, whose grantmaking arm helped fund the new work, published today in Science Translational Medicine . A blood test based on the findings could also help patients go on existing treatments earlier and boost clinical trials evaluating new therapies, the study’s authors say. “It’s really exciting because it’s something [physicians] could use to detect [Parkinson’s] before the clinical symptoms emerge,” says neuroscientist Malú  Tansey of the University of Florida, who also was not involved with the research. Parkin...
Source: ScienceNOW - Category: Science Source Type: news