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p38 Kinase is activated in the Alzheimer's disease brain

  • Kenneth Hensley
  • , Robert A. Floyd
  • , Nai Ying Zheng
  • , Raha Nael
  • , Kent A. Robinson
  • , Xuan Nguyen
  • , Quentin N. Pye
  • , Charles A. Stewart
  • , James Geddes
  • , William R. Markesbery
  • , Ela Patel
  • , Gail V.W. Johnson
  • , Guoying Bing

Research output: Contribution to journalArticlepeer-review

347 Scopus citations

Abstract

The p38 mitogen-activated protein kinase is a stress-activated enzyme responsible for transducing inflammatory signals and initiating apoptosis. In the Alzheimer's disease (AD) brain, increased levels of phosphorylated (active) p38 were detected relative to age-matched normal brain. Intense phospho-p38 immunoreactivity was associated with neuritic plaques, neuropil threads, and neurofibrillary tangle-bearing neurons. The antibody against phosphorylated p38 recognized many of the same structures as an antibody against aberrantly phosphorylated, paired helical filament (PHF) tau, although PHF-positive tau did not cross-react with the phospho-p38 antibody. These findings suggest a neuroinflammatory mechanism in the AD brain, in which aberrant protein phosphorylation affects signal transduction elements, including the p38 kinase cascade, as well as cytoskeletal components.

Original languageEnglish
Pages (from-to)2053-2058
Number of pages6
JournalJournal of Neurochemistry
Volume72
Issue number5
DOIs
StatePublished - 1999

Funding

FundersFunder number
National Institute on AgingP01AG005119

    Keywords

    • Alzheimer's disease
    • Dementia
    • Inflammation
    • Tau
    • p38 kinase

    ASJC Scopus subject areas

    • Biochemistry
    • Cellular and Molecular Neuroscience

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