NO synthase 2 (NOS2) deletion promotes multiple pathologies in a mouse model of Alzheimer's disease.

Journal Article (Journal Article)

Alzheimer's disease is characterized by two primary pathological features: amyloid plaques and neurofibrillary tangles. The interconnection between amyloid and tau aggregates is of intense interest, but mouse models have yet to reveal a direct interrelationship. We now show that NO may be a key factor that connects amyloid and tau pathologies. Genetic removal of NO synthase 2 in mice expressing mutated amyloid precursor protein results in pathological hyperphosphorylation of mouse tau, its redistribution to the somatodendritic compartment in cortical and hippocampal neurons, and aggregate formation. Lack of NO synthase 2 in the amyloid precursor protein Swedish mutant mouse increased insoluble beta-amyloid peptide levels, neuronal degeneration, caspase-3 activation, and tau cleavage, suggesting that NO acts at a junction point between beta-amyloid peptides, caspase activation, and tau aggregation.

Full Text

Duke Authors

Cited Authors

  • Colton, CA; Vitek, MP; Wink, DA; Xu, Q; Cantillana, V; Previti, ML; Van Nostrand, WE; Weinberg, JB; Dawson, H

Published Date

  • August 22, 2006

Published In

Volume / Issue

  • 103 / 34

Start / End Page

  • 12867 - 12872

PubMed ID

  • 16908860

Pubmed Central ID

  • PMC1550768

International Standard Serial Number (ISSN)

  • 0027-8424

Digital Object Identifier (DOI)

  • 10.1073/pnas.0601075103


  • eng

Conference Location

  • United States