Tau contributes to the progression of Alzheimer's

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(the mechanism)

A research group led by Giulio Maria Pasinetti, MD, PhD, Saunders Family Chair in Neurology at Mount Sinai School of Medicine, explored whether misfolded tau released by neurons from the human brain - also known as paired helical filaments (PHFs) - could actually be taken up by surrounding cells and promote the spread of tau neuropathology. The evidence was gathered by treating human neuronal cell lines with human Alzheimer's disease-derived PHFs. The researchers found that not only did the cells in fact internalize the human PHFs, the abnormal tau then propagated its abnormal state to the native, normal tau protein in the cells. 

"While these findings are potentially important for possibly opening new therapeutic avenues in Alzheimer's disease, they also shed light on a new therapeutic target for a wide variety of disorders sharing pathological features with Alzheimer's disease, for which there are currently no cures," said Dr. Pasinetti. "Such diseases include Progressive Supranuclear Palsy, frontotemporal dementia, and other devastating neurodegenerative disorders in which misfolded tau forms aggregates in the brain." 

Next the researchers treated the same cell lines with a grape-seed extract enriched in polyphenols, which are natural compounds found in grapes, fruits, and vegetables, based on 2011 research showing the efficacy of this extract in preventing the progression of AD in mice. Dr. Pasinetti's group found that a subfraction of this natural grape-seed extract enriched in polyphenols was able to prevent the cell-to-cell spread of tau pathology in the same human neuronal cell lines. Continue to read: medilexicon.com

Read more here: http://www.bnd.com/2012/02/07/2047945/obama-to-seek-more-alzheimers.html#storylink=cpy

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Eating fish, chicken and nuts may ward off Alzheimer's risk

Consumption of foods that contain omega-3 fatty acids, such as fish, chicken, salad dressing and nuts, may lead to lower blood levels of a protein related to Alzheimer's disease and memory problems, a new study has suggested. Read more: paktribune.com

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