Olfactory bulb lesions in alzheimer's disease

Robert G. Struble, H. Brent Clark

Research output: Contribution to journalArticle

56 Scopus citations


The olfactory bulb (OB), with its comparatively simple and well-delineated connectivity, presents an interesting system for examining cell-specific pathology in neurologic degenerative disorders such as Alzheimer's disease (AD). We have found that in AD the large, efferently projecting neurons (mitral cells) of the OB degenerate, typically without classical Alzheimer neurofibrillary changes. In some cases, with less severe neocortical pathology, the terminal arborizations of olfactory nerve appear hyperplastic and are associated with focal accumulations of A-4 (β-amyloid) immunoreactivity that are not detectable by standard amyloid stains. These abnormalities may represent a pathologic manifestation of normally occuring plasticity in the olfactory system.

Original languageEnglish (US)
Pages (from-to)469-473
Number of pages5
JournalNeurobiology of Aging
Issue number4
StatePublished - Jan 1 1992


  • Alzheimer's disease
  • Amyloid
  • Neuropathology
  • Olfactory system

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