Striatal hypodensities, not white matter hypodensities on CT, Are Associated with Late-Onset Depression in Alzheimer's Disease

Jessica A. Brommelhoff, Bryan M. Spann, John L. Go, Wendy J. MacK, Margaret Gatz

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

This study examined whether there were neuroanatomical differences evident on CT scans of individuals with dementia who differed on depression history. Neuroanatomical variables consisted of visual ratings of frontal lobe deep white matter, subcortical white matter, and subcortical gray matter hypodensities in the CT scans of 182 individuals from the Study of Dementia in Swedish Twins who were diagnosed with dementia and had information on depression history. Compared to individuals with Alzheimer's disease and no depression, individuals with Alzheimer's disease and late-onset depression (first depressive episode at age 60 or over) had a greater number of striatal hypodensities (gray matter hypodensities in the caudate nucleus and lentiform nucleus). There were no significant differences in frontal lobe deep white matter or subcortical white matter. These findings suggest that late-onset depression may be a process that is distinct from the neurodegenerative changes caused by Alzheimer's disease.

Original languageEnglish (US)
Article number187219
JournalJournal of Aging Research
Volume2011
DOIs
StatePublished - 2011

ASJC Scopus subject areas

  • Geriatrics and Gerontology

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