Cited by 140Functional Brain Connectivity StudiesTreatment of Major DepressionTranscranial Magnetic Stimulation Studies

Default-mode network connectivity and white matter burden in late-life depression

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Wu, Minjie, Andreescu, Carmen, Butters, Meryl A., Tamburo, Robert, Reynolds, Charles F., Aizenstein, Howard·2011·Psychiatry Research: Neuroimaging

Abstract

The brain's default-mode network has been the focus of intense research. This study characterizes the default-mode network activity in late-life depression and the correlation of the default-mode network activity changes with the white-matter hyperintensities burden. We hypothesized that elderly depressed subjects would have altered default-mode network activity, which would correlate with the increased white-matter hyperintensities burden. Twelve depressed subjects (mean Hamilton Depression Rating Scale 19.8±4.1, mean age 70.5±4.9) and 12 non-depressed, comparison subjects (mean age 69±6.5) were included. Functional magnetic resonance imaging (fMRI) data were collected while subjects performed a low cognitive load, event-related task. We compared the default-mode network activity in these groups (including depressed subjects pre- and post-antidepressant treatment). We analyzed the resting connectivity patterns of the posterior cingulate cortex. Deconvolution was used to evaluate the correlation of resting-state connectivity scores with the white-matter hyperintensities burden. Compared with non-depressed elderly, depressed subjects pretreatment had decreased connectivity in the subgenual anterior cingulate cortex and increased connectivity in the dorsomedial prefrontal cortex and the orbito-frontal cortex. The abnormal connectivity was significantly correlated with the white-matter hyperintensities burden. Remitted elderly depressed subjects had improved functional connectivity compared to pretreatment, although alterations persisted in the anterior cingulate and the prefrontal cortex when remitted elderly depressed subjects were compared with non-depressed elderly. Our study provides evidence for altered default-mode network connectivity in late-life depression. The correlation between white-matter hyperintensities burden and default-mode network connectivity emphasizes the role of vascular changes in late-life depression etiopathogenesis.

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Crossref · 10.1016/j.pscychresns.2011.04.003

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  • Two preliminary studies investigated the relation between white matter integrity and functional connectivity in geriatric depression, but they did not compare their data with a healthy control group.

    “Furthermore, two preliminary studies investigated the relation between white matter integrity and functional connectivity in geriatric depression, but they did not compare their data with a healthy control group (27,28).”
  • Two preliminary studies in geriatric depression reported that decreased white matter integrity is related to functional connectivity.

    “This is corroborated by two preliminary studies in geriatric depression that reported a comparable pattern that decreased white matter integrity is related to functional connectivity (27,28), although those studies did not compare patients with healthy control subjects, which is a strength of the present investigation.”

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Authors
Wu, M., Andreescu, C., Butters, M. A., Tamburo, R., Reynolds, C. F., & Aizenstein, H.
Affiliations
University of Pittsburgh (US)
Corresponding author
Andreescu, Carmen
Venue
Psychiatry Research: Neuroimaging
Publisher
Elsevier BV
Published
2011-10
Volume
194
Issue
1
Pages
39-46
ISSN
0925-4927 (ISSN-L)
OpenAlex
W2017407197
Cited by
140
References
39
Citations by year
2026: 4 · 2025: 5 · 2024: 2 · 2023: 6 · 2022: 8 · 2021: 12 · 2020: 8 · 2019: 12 · 2018: 11 · 2017: 11 · 2016: 15 · 2015: 16 · 2014: 8 · 2013: 14 · 2012: 7
FWCI
4.87
Type
journal article
Language
en
Open access
Locations
  • Psychiatry Research Neuroimaging (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (UL1TR000005)
  • U.S. Public Health Service (K23 086686)
  • National Institute of Mental Health (R01MH072947, R37MH043832, R01MH076079, R37/R01 MH43832, P30MH071944, R01MH043832, K23MH086686)
  • National Center for Advancing Translational Sciences
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
Keywords
geriatric depression, default mode network, white matter hyperintensities, resting-state functional connectivity, posterior cingulate cortex, subgenual anterior cingulate cortex, dorsomedial prefrontal cortex, orbitofrontal cortex, antidepressant response
MeSH terms
Aged, Brain, Brain Mapping, Depression, Female, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Nerve Fibers, Myelinated, Neural Pathways, Neuropsychological Tests, Oxygen, Rest, Statistics as Topic

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