Antemortem amyloid imaging and β-amyloid pathology in a case with dementia with Lewy bodies

Neurobiol Aging. 2012 May;33(5):878-85. doi: 10.1016/j.neurobiolaging.2010.08.007. Epub 2010 Oct 18.


The association between ante mortem [(11)C]-Pittsburgh Compound B (PiB) retention and β-amyloid (Aβ) load, Lewy body (LB) and neurofibrillary tangle (NFT) densities were investigated in a pathologically confirmed case of dementia with Lewy bodies (DLB). A 76 year old man presenting with a clinical diagnosis of DLB had undergone PiB-positron emission tomography (PET), (18)F FDG-PET and magnetic resonance imaging (MRI) 18 months before death. The pathologic diagnosis was DLB neocortical-type with low-likelihood of Alzheimer's disease by NIA-Reagan criteria. Sections from regions of interest (ROI) on post-mortem examination were studied. A significant correlation was found between cortical Aβ density and PiB retention in the 17 corresponding ROIs (r = 0.899; p < 0.0001). Bielschowsky silver stain revealed mostly sparse neocortical neuritic plaques, whereas diffuse plaques were frequent. There was no correlation between LB density and PiB retention (r = 0.13; p = 0.66); nor between NFT density and PiB retention (r = -0.36; p = 0.17). The ROI-based analysis of imaging and histopathological data confirms that PiB uptake on PET is a specific marker for Aβ density, but cannot differentiate neuritic from diffuse amyloid plaques in this case with DLB.

Publication types

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

MeSH terms

  • Aged
  • Amyloid beta-Peptides / adverse effects*
  • Amyloid beta-Peptides / biosynthesis
  • Aniline Compounds
  • Carbon Radioisotopes
  • Fatal Outcome
  • Humans
  • Lewy Body Disease / diagnostic imaging
  • Lewy Body Disease / metabolism*
  • Lewy Body Disease / pathology
  • Male
  • Neocortex / diagnostic imaging
  • Neocortex / metabolism*
  • Neocortex / pathology
  • Peptidylprolyl Isomerase / antagonists & inhibitors
  • Phenanthrolines
  • Positron-Emission Tomography / methods*
  • Thiazoles


  • 2-(4'-(methylamino)phenyl)-6-hydroxybenzothiazole
  • Amyloid beta-Peptides
  • Aniline Compounds
  • Carbon Radioisotopes
  • Phenanthrolines
  • Thiazoles
  • Peptidylprolyl Isomerase