Cited by 215Functional Brain Connectivity StudiesDementia and Cognitive Impairment ResearchComplex Network Analysis Techniques

Disrupted Small-World Brain Networks in Moderate Alzheimer's Disease: A Resting-State fMRI Study

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Zhao, Xiaohu, Liu, Yong, Wang, Xiangbin, Liu, Bing, Xi, Qian, Guo, Qihao, Jiang, Hong, Jiang, Tianzi +1 more·2012·PLoS ONE

Abstract

The small-world organization has been hypothesized to reflect a balance between local processing and global integration in the human brain. Previous multimodal imaging studies have consistently demonstrated that the topological architecture of the brain network is disrupted in Alzheimer's disease (AD). However, these studies have reported inconsistent results regarding the topological properties of brain alterations in AD. One potential explanation for these inconsistent results lies with the diverse homogeneity and distinct progressive stages of the AD involved in these studies, which are thought to be critical factors that might affect the results. We investigated the topological properties of brain functional networks derived from resting functional magnetic resonance imaging (fMRI) of carefully selected moderate AD patients and normal controls (NCs). Our results showed that the topological properties were found to be disrupted in AD patients, which showing increased local efficiency but decreased global efficiency. We found that the altered brain regions are mainly located in the default mode network, the temporal lobe and certain subcortical regions that are closely associated with the neuropathological changes in AD. Of note, our exploratory study revealed that the ApoE genotype modulates brain network properties, especially in AD patients.

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  1. [8]Sporns O 2010 Networks of the brain: The MIT Press
  2. [25]Mayeux R 2003 Epidemiology of neurodegeneration. Annu Rev Neurosci 26 81 104 12574495

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Authors
Zhao, X., Liu, Y., Wang, X., Liu, B., Xi, Q., Guo, Q., Jiang, H., Jiang, T., & Wang, P.
Affiliations
  • Tongji University (CN)
  • Chinese Academy of Sciences (CN)
  • Shanghai Medical College of Fudan University (CN)
  • University of Electronic Science and Technology of China (CN)
Corresponding author
  • Jiang, Tianzi
  • Wang, Peijun
Venue
PLoS ONE
Published
2012-03-23
Volume
7
Issue
3
Pages
e33540
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2003131754
Cited by
215
References
95
Citations by year
2026: 6 · 2025: 5 · 2024: 9 · 2023: 9 · 2022: 9 · 2021: 24 · 2020: 16 · 2019: 17 · 2018: 24 · 2017: 21 · 2016: 21 · 2015: 19 · 2014: 16 · 2013: 16 · 2012: 3
FWCI
8.85
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • National Natural Science Foundation of China (30770615, 30970818, 863 Program, 60831004, 2011CBA00408, 30970770)
  • National High-tech Research and Development Program
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Complex Network Analysis Techniques
Keywords
Alzheimer's disease, small-world networks, functional brain networks, network topology, local efficiency, global efficiency, default mode network, temporal lobe, subcortical structures, APOE genotype, resting-state fMRI
MeSH terms
Aged, Alzheimer Disease, Apolipoproteins E, Brain, Female, Genotype, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Case-Control Studies

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