Triflusal reduces dense-core plaque load, associated axonal alterations and inflammatory changes, and rescues cognition in a transgenic mouse model of Alzheimer's disease

Neurobiol Dis. 2010 Jun;38(3):482-91. doi: 10.1016/j.nbd.2010.01.019. Epub 2010 Feb 10.

Abstract

Inflammation has been associated with the two classic lesions in the Alzheimer's (AD) brain, amyloid deposits and neurofibrillary tangles. Recent data suggest that Triflusal, a compound with potent anti-inflammatory effects in the central nervous system in vivo, might delay the conversion from amnestic mild cognitive impairment to a fully established clinical picture of dementia. In the present study, we investigated the effect of Triflusal on brain Abeta accumulation, neuroinflammation, axonal curvature and cognition in an AD transgenic mouse model (Tg2576). Triflusal treatment did not alter the total brain Abeta accumulation but significantly reduced dense-cored plaque load and associated glial cell proliferation, proinflammatory cytokine levels and abnormal axonal curvature, and rescued cognitive deficits in Tg2576 mice. Behavioral benefit was found to involve increased expression of c-fos and BDNF, two of the genes regulated by CREB, as part of the signal transduction cascade underlying the molecular basis of long-term potentiation. These results add preclinical evidence of a potentially beneficial effect of Triflusal in AD.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alzheimer Disease / drug therapy*
  • Alzheimer Disease / metabolism*
  • Alzheimer Disease / pathology
  • Amyloid beta-Peptides / genetics
  • Amyloid beta-Peptides / metabolism
  • Animals
  • Axons / drug effects
  • Axons / pathology
  • Brain / drug effects*
  • Brain / metabolism*
  • Brain / pathology
  • Brain-Derived Neurotrophic Factor / metabolism
  • Central Nervous System Agents / pharmacology*
  • Cognition Disorders / drug therapy
  • Cognition Disorders / metabolism
  • Cognition Disorders / pathology
  • Cytokines / metabolism
  • Disease Models, Animal
  • Humans
  • Mice
  • Mice, Inbred C57BL
  • Mice, Transgenic
  • Neuroglia / drug effects
  • Neuroglia / pathology
  • Plaque, Amyloid / drug effects
  • Plaque, Amyloid / metabolism
  • Plaque, Amyloid / pathology
  • Proto-Oncogene Proteins c-fos / metabolism
  • Salicylates / pharmacology*

Substances

  • Amyloid beta-Peptides
  • Brain-Derived Neurotrophic Factor
  • Central Nervous System Agents
  • Cytokines
  • Proto-Oncogene Proteins c-fos
  • Salicylates
  • triflusal