Subregional hippocampal atrophy predicts Alzheimer's dementia in the cognitively normal

Liana G. Apostolova, Lisa Mosconi, Paul M. Thompson, Amity E. Green, Kristy S. Hwang, Anthony Ramirez, Rachel Mistur, Wai H. Tsui, Mony J. de Leon

Research output: Contribution to journalArticle

170 Scopus citations

Abstract

Atrophic changes of the hippocampus are typically regarded as an early sign of Alzheimer's dementia (AD). Using the radial distance atrophy mapping approach, we compared the longitudinal MRI data of 10 cognitively normal elderly subjects who remained normal at 3-year and 6-year follow-up (NL-NL) and 7 cognitively normal elderly subjects who were diagnosed with mild cognitive impairment (MCI) 2.8 (range 2.0-3.9) and with AD 6.8 years (range 6.1-8.2) after baseline (NL-MCIAD). 3D statistical maps revealed greater hippocampal atrophy in the NL-MCIAD relative to the NL-NL group at baseline (left p=0.05; right p=0.06) corresponding to 10-15% CA1, and 10-25% subicular atrophy, and bilateral differences at 3-year follow-up (left p=0.001, right p<0.02) corresponding to 10-30% subicular, 10-20% CA1, and 10-20% newly developed CA2-3 atrophy. This preliminary study suggests that excess CA1 and subicular atrophy is present in cognitively normal individuals predestined to decline to amnestic MCI, while progressive involvement of the CA1 and subiculum, and atrophy spreading to the CA2-3 subfield in amnestic MCI, suggests future diagnosis of AD.

Original languageEnglish (US)
Pages (from-to)1077-1088
Number of pages12
JournalNeurobiology of Aging
Volume31
Issue number7
DOIs
StatePublished - Jul 1 2010
Externally publishedYes

Keywords

  • Alzheimer's disease (AD)
  • Hippocampus
  • Magnetic resonance imaging (MRI)
  • Memory
  • Mild cognitive impairment (MCI)
  • Predicting cognitive decline

ASJC Scopus subject areas

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

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  • Cite this

    Apostolova, L. G., Mosconi, L., Thompson, P. M., Green, A. E., Hwang, K. S., Ramirez, A., Mistur, R., Tsui, W. H., & de Leon, M. J. (2010). Subregional hippocampal atrophy predicts Alzheimer's dementia in the cognitively normal. Neurobiology of Aging, 31(7), 1077-1088. https://doi.org/10.1016/j.neurobiolaging.2008.08.008