Cited by 595Functional Brain Connectivity StudiesDementia and Cognitive Impairment ResearchAlzheimer's disease research and treatments

Loss of intranetwork and internetwork resting state functional connections with Alzheimer’s disease progression

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Brier, M. R., Thomas, J. B., Snyder, A. Z., Benzinger, T. L., Zhang, D., Raichle, M. E., Holtzman, D. M., Morris, J. C. +1 more·2012·Journal of Neuroscience

Abstract

Alzheimer's disease (AD) is the most common cause of dementia. Much is known concerning AD pathophysiology but our understanding of the disease at the systems level remains incomplete. Previous AD research has used resting-state functional connectivity magnetic resonance imaging (rs-fcMRI) to assess the integrity of functional networks within the brain. Most studies have focused on the default-mode network (DMN), a primary locus of AD pathology. However, other brain regions are inevitably affected with disease progression. We studied rs-fcMRI in five functionally defined brain networks within a large cohort of human participants of either gender (n = 510) that ranged in AD severity from unaffected [clinical dementia rating (CDR) 0] to very mild (CDR 0.5) to mild (CDR 1). We observed loss of correlations within not only the DMN but other networks at CDR 0.5. Within the salience network (SAL), increases were seen between CDR 0 and CDR 0.5. However, at CDR 1, all networks, including SAL, exhibited reduced correlations. Specific networks were preferentially affected at certain CDR stages. In addition, cross-network relations were consistently lost with increasing AD severity. Our results demonstrate that AD is associated with widespread loss of both intranetwork and internetwork correlations. These results provide insight into AD pathophysiology and reinforce an integrative view of the brain's functional organization.

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Crossref · 10.1523/jneurosci.5698-11.2012

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  • Some preclinical AD data has indicated altered rsfMRI FC resulting in a loss of connectivity in the default mode network and salience network, and this finding correlates with Aβ plaque accumulation, resulting in decreased connectivity between the precuneus and hippocampus.

    “Some preclinical AD data has indicated altered rsfMRI FC (Sheline and Raichle, 2013) resulting in a loss of connectivity in the default mode network and salience network (Brier et al., 2012) and this finding correlates with Aβ plaque accumulation, resulting in decreased connectivity between the precuneus and hippocampus (Sheline et al., 2010).”

    From Early stage alterations in white matter and decreased functional interhemispheric hippocampal connectivity in the 3xTg mouse model of Alzheimer’s disease. (2019) · cites this paper as Brier et al., 2012

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Cited by

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Authors
Brier, M. R., Thomas, J. B., Snyder, A. Z., Benzinger, T. L., Zhang, D., Raichle, M. E., Holtzman, D. M., Morris, J. C., & Ances, B. M.
Affiliations
Washington University in St. Louis (US)
Venue
Journal of Neuroscience
Published
2012-06-27
Volume
32
Issue
26
Pages
8890-8899
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1979631864
Cited by
595
References
17
Citations by year
2026: 28 · 2025: 39 · 2024: 36 · 2023: 44 · 2022: 47 · 2021: 54 · 2020: 63 · 2019: 42 · 2018: 35 · 2017: 37 · 2016: 36 · 2015: 50 · 2014: 45 · 2013: 32 · 2012: 6
FWCI
21.80
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Commons@Becker (Washington University School of Medicine) (submittedVersion)
Funders
  • Bristol-Myers Squibb
  • Pfizer
  • Avid Radiopharmaceuticals
  • Charles F. and Joanne Knight Alzheimer Disease Research Center, Washington University in St. Louis
  • National Institute on Aging (P 50 AG05681, P50AG005681, P01 AG0 3991, P01AG003991, P01AG026276)
  • National Institute of Mental Health (K23MH081786)
  • National Institute of Nursing Research (R01NR012657, R01NR012907)
  • National Institute of General Medical Sciences (T32GM007200)
  • National Institute of Neurological Disorders and Stroke (P30NS057105, P30NS048056, P50NS006833, NS 06833)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
Alzheimer's disease, resting-state functional connectivity, default mode network, salience network, functional brain networks, disease progression, Clinical Dementia Rating
MeSH terms
Aged, Alzheimer Disease, Brain, Brain Mapping, Female, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Nerve Net, Neural Pathways, Oxygen, Psychiatric Status Rating Scales, Rest, Statistics as Topic, Cohort Studies, Disease Progression

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