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Home NEWS Science News Health

Coming soon: A blood test for Alzheimer's disease?

Bioengineer by Bioengineer
January 17, 2019
in Health
Reading Time: 2 mins read
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People with symptoms of Alzheimer’s disease (AD), such as cognitive difficulties, behavior changes and mood swings, may wait months or even years to get a definitive diagnosis. That’s because doctors lack a simple, accurate and inexpensive test for it. But according to an article in Chemical & Engineering News (C&EN), the weekly newsmagazine of the American Chemical Society, researchers are getting much closer to developing the elusive blood test for AD.

About 5.5 million Americans are living with AD, according to the National Institute on Aging. Most do not seek treatment until their symptoms are well advanced, freelance contributor Jyoti Madhusoodanan writes. By then, substantial and irreversible damage to the brain has already occurred. Current tests for AD, such as positron emission tomography (PET) and lumbar puncture, are invasive, cost thousands of dollars and aren’t covered by most health insurance plans in the U.S. For nearly 20 years, researchers have been trying to develop a blood test for AD, but they’ve been stymied by the low amounts of potential biomarkers in blood.

Recently, new biomarkers and assays have moved a reliable blood test closer to the clinic. For example, instead of measuring the total amount of amyloid — the protein that forms clumps in the brains of AD patients — in blood, researchers can more accurately diagnose AD by looking at ratios of different peptides that form when amyloid breaks down. Sensitive new assays can detect smaller amounts of these peptides in blood. These and other developments have made many researchers optimistic that a blood test for AD will be available within the next five years. Such a test would not only aid in diagnosis, but might also help in the search for better AD treatments because it could identify participants for clinical trials.

###

The article was produced in partnership with ACS Central Science, ACS’ fully open-access journal. Read the original version here.

The article, “A blood test for Alzheimer’s disease draws near,” is freely available here.

The American Chemical Society, the world’s largest scientific society, is a not-for-profit organization chartered by the U.S. Congress. ACS is a global leader in providing access to chemistry-related information and research through its multiple databases, peer-reviewed journals and scientific conferences. ACS does not conduct research, but publishes and publicizes peer-reviewed scientific studies. Its main offices are in Washington, D.C., and Columbus, Ohio.

To automatically receive news releases from the American Chemical Society, contact [email protected].

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Katie Cottingham
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301-775-8455

Tags: AgingAlzheimerBiochemistryCell BiologyChemistry/Physics/Materials SciencesDiagnosticsGenetics
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