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Stroke Drug may also Prevent Alzheimer's Disease

by Colleen Fleiss on January 15, 2019 at 10:38 PM
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Stroke Drug may also Prevent Alzheimer's Disease

Drug 3K3A-APC used to treat stroke patients was also found to prevent Alzheimer's disease, revealed researchers from the University of Southern California. The study findings have been published in the Journal of Experimental Medicine.

3K3A-APC is a genetically modified version of a human blood protein called activated protein C, which reduces inflammation and protects both neurons and the cells that line the walls of blood vessels from death and degeneration. 3K3A-APC has beneficial effects in various mouse models of disease, including traumatic brain injury and multiple sclerosis, and is currently being developed to treat stroke in humans, where it has been shown to be safe, well tolerated, and capable of reducing intracerebral bleeding.

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Toxic amyloid-β peptides accumulate in the brains of Alzheimer's patients, leading to neurodegeneration and reduced blood flow within the brain. Zlokovic and colleagues found that 3K3A-APC significantly reduced the accumulation of amyloid-β in the brains of mice that usually produce large amounts of the toxic peptide. 3K3A-APC treatment prevented these mice from losing their memory and helped maintain normal cerebral blood flow. The drug also suppressed inflammation within the brain, another common feature of Alzheimer's disease.

Zlokovic and colleagues found that 3K3A-APC protects the brain by preventing nerve cells from producing an enzyme called BACE1 that is required to produce amyloid-β. Several different inhibitors of BACE1 have been tested in clinical trials for Alzheimer's disease, but the new study suggests that using 3K3A-APC to block the production of BACE1 could be an alternative approach, particularly at early stages of the disease when amyloid-β has yet to accumulate to levels capable of permanently damaging the brain.

"Our present data support the idea that 3K3A-APC holds potential as an effective anti-amyloid-β therapy for early stage Alzheimer's disease in humans," Zlokovic says.

Source: Eurekalert
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