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- W2077048957 abstract "Synaptic failure and neurofibrillary degeneration are two major neuropathological substrates of cognitive dysfunction in Alzheimer's disease (AD). Only a few studies have demonstrated a direct relationship between these two AD hallmarks. To investigate tau mediated synaptic injury we used rat model of tauopathy that develops extensive neurofibrillary pathology in the cortex. Using fractionation of cortical synapses, we identified an increase in endogenous rat tau isoforms in presynaptic compartment, and their mis-sorting to the postsynaptic density (PSD). Truncated transgenic tau was distributed in both compartments exhibiting specific phospho-pattern that was characteristic for each synaptic compartment. In the presynaptic compartment, truncated tau was associated with impairment of dynamic stability of microtubules which could be responsible for reduction of synaptic vesicles. In the PSD, truncated tau lowered the levels of neurofilaments. Truncated tau also significantly decreased the synaptic levels of Aβ40 but not Aβ42. These data show that truncated tau differentially deregulates synaptic proteome in pre- and postsynaptic compartments. Importantly, we show that alteration of Aβ can arise downstream of truncated tau pathology." @default.
- W2077048957 created "2016-06-24" @default.
- W2077048957 creator A5004900030 @default.
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- W2077048957 creator A5072459478 @default.
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- W2077048957 date "2015-02-23" @default.
- W2077048957 modified "2023-09-24" @default.
- W2077048957 title "Truncated tau deregulates synaptic markers in rat model for human tauopathy" @default.
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- W2077048957 doi "https://doi.org/10.3389/fncel.2015.00024" @default.
- W2077048957 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4337338" @default.
- W2077048957 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25755633" @default.
- W2077048957 hasPublicationYear "2015" @default.
- W2077048957 type Work @default.