alexa Formation of neurofibrillary tangles in P301l tau transgenic mice induced by Abeta 42 fibrils.


Journal of Alzheimers Disease & Parkinsonism

Author(s): Gtz J, Chen F, van Dorpe J, Nitsch RM

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Abstract beta-Amyloid plaques and neurofibrillary tangles (NFTs) are the defining neuropathological hallmarks of Alzheimer's disease, but their pathophysiological relation is unclear. Injection of beta-amyloid Abeta42 fibrils into the brains of P301L mutant tau transgenic mice caused fivefold increases in the numbers of NFTs in cell bodies within the amygdala from where neurons project to the injection sites. Gallyas silver impregnation identified NFTs that contained tau phosphorylated at serine 212/threonine 214 and serine 422. NFTs were composed of twisted filaments and occurred in 6-month-old mice as early as 18 days after Abeta42 injections. Our data support the hypothesis that Abeta42 fibrils can accelerate NFT formation in vivo. This article was published in Science and referenced in Journal of Alzheimers Disease & Parkinsonism

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