Brain protein levels linked to Alzheimer's
(BMP6 reduced the proliferation)
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Dr. Eliezer Masliah, professor of neurosciences and pathology in the UC San Diego School of Medicine, and colleagues report that increased levels of BMP6 — part of a family of bone morphogenetic proteins involved in cell signaling and growth — were found in the brains of Alzheimer's patients and in mouse models of the disease. (ncbi.nlm.nih.gov)
BMP6 is primarily known to be involved in bone growth and the proliferation of non-neuronal glial cells in developing embryos. Its purpose in adult brains is less clear. "As a growth factor, it might initially be expressed for protective effect, a response to accumulating amyloid plaque proteins in Alzheimer's patients," said first author Leslie Crews, a post-doctoral researcher in Masliah's lab.
But too much BMP6 appears to be increasingly detrimental. Researchers found that levels of BMP6 grew in step with the progression of Alzheimer's disease. "In early stages of AD, there was less protein than there was in later, more advanced stages," said Crews.
Higher-than-normal levels of BMP6 were found in the dentate gyrus of Alzheimer's patients and around characteristic amyloid plaques in the hippocampus. Both regions of the brain are critical to memory formation and storage. Read more: physorg.com
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