The in vitro neuronal toxicity of pentraxins associated with Alzheimer's disease brain lesions

Taihung Duong, Paul J. Acton, Robert A. Johnson

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

Serum amyloid P component (AP) and C-reactive protein (CRP) are normal serum components which belong to the pentraxin family of proteins. These proteins have been previously localized by immunohistochemical method to the brain lesions of Alzheimer's disease (AD). AP is a constant constituent of amyloid deposits including those found in AD. Both AP and CRP have been localized to AD neurofibrillary tangles. An indirect role for these proteins has been previously suggested in the etiology of AD. We studied the effects of serum AP and CRP on a human-derived neuronal cell line (hNT). In treated cell cultures, AP and CRP were detected immunohistochemically within hNT neurons, indicating cellular uptake of these proteins. Serum AP at the lowest serum physiological concentration (8 μg/ml) showed a marked toxicity to hNT neurons. CRP also displayed toxicity to the hNT neurons but at a level compatible with inflammatory states (50 μg/ml). These results suggest a more direct role for serum AP and CRP in the pathogenesis of AD.

Original languageEnglish (US)
Pages (from-to)303-312
Number of pages10
JournalBrain research
Volume813
Issue number2
DOIs
StatePublished - Dec 7 1998

Keywords

  • Acute-phase protein
  • Amyloid P component
  • C-reactive protein
  • hNT neuron
  • Neuronal culture
  • NT2 cell

ASJC Scopus subject areas

  • Neuroscience(all)

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