Argyrophilic grains: A distinct disease or an additive pathology?

Keith A. Josephs, Jennifer L. Whitwell, Joseph E. Parisi, David S. Knopman, Bradley F. Boeve, Yonas E. Geda, Clifford R. Jack, Ronald C. Petersen, Dennis W. Dickson

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Background: Argyrophilic grains (AG) are silver-positive spindle-shaped lesions found at postmortem. Their significance is controversial. Objective: To determine clinical correlates of AG and MRI patterns of atrophy that could allow premortem recognition of this pathology. Methods: Cases with AG were identified from a longitudinal study of aging and dementia. Clinical features were compared between subjects with and without dementia. Voxel-based morphometry (VBM) was used to assess patterns of grey matter atrophy in subjects compared to controls. Whole brain volumes (WBV) were compared across groups. Results: Twenty-two cases (14 females; median age at death of 90 years; range: 70-101) with AG were identified. Eight of the 22 were demented. Those with dementia had higher Braak (p = 0.02) and lower Mini-Mental State Examination (MMSE) (p = 0.002). VBM demonstrated hippocampal atrophy in those with dementia (N = 3) but no atrophy in those without (N = 9). There was no difference in WBV between groups. Conclusion: AG is a feature of old age commonly occurring in non-demented subjects. In this age group, the presence of AG may reduce the threshold for dementia.

Original languageEnglish (US)
Pages (from-to)566-573
Number of pages8
JournalNeurobiology of Aging
Volume29
Issue number4
DOIs
StatePublished - Apr 2008
Externally publishedYes

Keywords

  • Alzheimer's disease
  • Argyrophilic
  • MRI
  • Total intracranial volume
  • Volume loss
  • Voxel-based morphometry

ASJC Scopus subject areas

  • Neuroscience(all)
  • Aging
  • Clinical Neurology
  • Developmental Biology
  • Geriatrics and Gerontology

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