Apolipoprotein E is present in hippocampal neurons without neurofibrillary tangles in Alzheimer's disease and in age-matched controls.

Journal Article (Journal Article)

Apolipoprotein E (apoE, protein; APOE, gene) is a susceptibility gene for late-onset familial and sporadic Alzheimer's disease (AD). To examine the role of apoE in the pathogenesis of AD, we used immunocytochemistry to compare apoE localization in the hippocampus of histologically confirmed cases of AD, Parkinson's disease (PD), and normal controls. We confirmed apoE immunoreactivity in astrocytes, senile plaques, blood vessels, and some neurons containing neurofibrillary tangles (NFTs). In addition, we observed apoE immunoreactivity in hippocampal neurons without NFTs in AD and PD patients as well as in some nondemented aged controls. In AD cases, apoE-immunoreactive neurites were closely associated with beta-amyloid (A beta) containing senile plaques and intraneuronal apoE was sometimes associated with immunoreactive tau protein accumulation. Thus, apoE is localized where it may affect the biological expression of two characteristic AD pathological correlates: extracellular A beta deposition and intraneuronal tau metabolism and NFT formation.

Full Text

Duke Authors

Cited Authors

  • Han, SH; Hulette, C; Saunders, AM; Einstein, G; Pericak-Vance, M; Strittmatter, WJ; Roses, AD; Schmechel, DE

Published Date

  • July 1994

Published In

Volume / Issue

  • 128 / 1

Start / End Page

  • 13 - 26

PubMed ID

  • 8070517

International Standard Serial Number (ISSN)

  • 0014-4886

Digital Object Identifier (DOI)

  • 10.1006/exnr.1994.1108


  • eng

Conference Location

  • United States