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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The spatial patterns of plaques and tangles in Alzheimer's disease do not support the 'cascade hypothesis'.

In Alzheimer's disease (AD), the 'Cascade hypothesis' proposes that the formation of paired helical filaments (PHF) may be casually linked to the deposition of beta/ A4 protein. Hence, there should be a close spatial relationship between senile plaques and cellular neurofibrillary tangles in a local region of the brain. In tissue from 6 AD patients, plaques and tangles occurred in clusters and individual clusters were often regularly spaced along the cortical strip. However, the clusters of plaques and tangles were in phase in only 4/32 cortical tissues examined. Hence, the data were not consistent with the 'Cascade hypothesis' that beta/ A4 and PHF are directly linked in AD.[1]


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