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The biochemistry of Alzheimer's disease, the most common cause of dementia, is not yet very well understood. Alzheimer's disease (AD) has been identified as a proteopathy : a protein misfolding disease due to the accumulation of abnormally folded amyloid beta (Aβ) protein in the brain . [ 1 ]
A different perspective on Alzheimer's is revealed by a mouse study that has found that APP possesses ferroxidase activity similar to ceruloplasmin, facilitating iron export through interaction with ferroportin; it seems that this activity is blocked by zinc trapped by accumulated Aβ in Alzheimer's. [9]
The other protein implicated in Alzheimer's disease, tau protein, also forms such prion-like misfolded oligomers, and there is some evidence that misfolded Aβ can induce tau to misfold. [6] [7] A study has suggested that APP and its amyloid potential is of ancient origins, dating as far back as early deuterostomes. [8]
Scientists have spotted changes in brain activity that may point to Alzheimer’s. RapidEye/Getty Images ... behind the cause of Alzheimer’s disease includes the build-up of amyloid-beta and tau ...
A main theory behind the cause of Alzheimer’s disease is the build-up of the protein amyloid-beta in the brain. Researchers from the University of Cincinnati provide evidence suggesting it’s ...
The causes of Alzheimer's disease remain poorly understood. [16] There are many environmental and genetic risk factors associated with its development. The strongest genetic risk factor is from an allele of apolipoprotein E. [17] [18] Other risk factors include a history of head injury, clinical depression, and high blood pressure. [1]
An advance in 1984 and 1985 was the identification of Aβ as the protein that forms the cores of plaques. [20] This discovery led to the generation of new tools to study plaques, particularly antibodies to Aβ, and presented a molecular target for the development of potential therapies for Alzheimer's disease. [4] [21] [22] [23]
Sylvain E. Lesné (born 1974) is a French neuroscientist and associate professor at the Department of Neuroscience at the University of Minnesota (UMN) Medical School, known for his research into Alzheimer's disease. He is the primary author of a controversial 2006 Nature paper, "A specific amyloid-β protein assembly in the brain impairs ...
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