NAP protects memory, increases soluble tau and reduces tau hyperphosphorylation in a tauopathy model.

Abstract:

:NAP (NAPVSIPQ) provides broad neuroprotection through microtubule interaction. Here, NAP was investigated for neuroprotection in an in vivo tauopathy model. Transgenic mice (2-month-old) that express the human double mutant tau protein [P301S;K257T] fused to the tau promoter, were subjected to daily intranasal drug treatment for approximately 5 months. Results showed increased performance in the NAP-treated mice compared to controls, as demonstrated in the Morris water maze, (p<0.05). Treatment continued for 5 additional months and mouse cortices were biochemically analyzed. Protein extraction identified increased tau protein content in the heat-stable soluble fraction, which contains microtubule-associated tau, in the 1-year-old NAP-treated mice as compared to vehicle-controls. Tau phosphorylation (Ser 202) increased in the tau-transgenic mice compared to control mice, and was significantly reduced in NAP-treated mice. The current studies show for the first time activity for NAP in a "pure" tauopathy model, positioning it as a promising drug candidate in multiple neurodegenerative tauopathies.

journal_name

Neurobiol Dis

journal_title

Neurobiology of disease

authors

Shiryaev N,Jouroukhin Y,Giladi E,Polyzoidou E,Grigoriadis NC,Rosenmann H,Gozes I

doi

10.1016/j.nbd.2009.02.011

subject

Has Abstract

pub_date

2009-05-01 00:00:00

pages

381-8

issue

2

eissn

0969-9961

issn

1095-953X

pii

S0969-9961(09)00039-4

journal_volume

34

pub_type

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