Cited by 320Functional Brain Connectivity StudiesDementia and Cognitive Impairment ResearchAlzheimer's disease research and treatments

Resting Brain Connectivity: Changes during the Progress of Alzheimer Disease

Zhang, Hong-Ying, Wang, Shi-Jie, Liu, Bin, Ma, Zhan-Long, Yang, Ming, Zhang, Zhi-Jun, Teng, Gao-Jun·2010·Radiology

Abstract

PURPOSE: To investigate alterations in functional connectivity in the resting brain networks in healthy elderly volunteers and patients with mild, moderate, or severe Alzheimer Disease (AD). MATERIALS AND METHODS: This study was approved by the institutional ethics committee, and informed consent was obtained. Forty-six patients with AD and 16 healthy elderly volunteers were prospectively examined. Resting-state functional magnetic resonance imaging was used to detect alterations in posterior cingulate cortex (PCC) functional connectivity through a comparison of the healthy control group with three separate AD groups-mild, moderate, and severe AD. A temporal correlation method was used to obtain PCC connectivity maps. RESULTS: Dissociated functional connectivity between the PCC and a set of regions, including the visual cortices bilaterally, the inferior temporal cortex, the hippocampus, and especially the medial prefrontal cortex and the precuneus and/or cuneus, was observed in all AD groups. The disruption of connectivity intensified as the stage of AD progression increased. There were also regions that exhibited increased connectivity; these regions extended from left lateralized frontoparietal regions and spread to bilateral frontoparietal regions along with AD progression. CONCLUSION: Changes in PCC functional connectivity comprised bidirectional alterations in the resting networks in AD-affected brains, and the impaired resting functional connectivity seemed to change with AD progression. Therefore, alterations in functional connectivity in the default mode network might play a role in the progression of AD.

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Registry

Crossref · 10.1148/radiol.10091701

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  • Abnormalities in the default mode network have been observed in AD patients.

    “Furthermore, abnormalities in the default mode network, which is regulated in part by PV-INs [27], have been observed in AD patients [28][29][30][31][32].”

    From Parvalbumin interneuron vulnerability and brain disorders (2021) · cites this paper as [29]

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Authors
Zhang, H.-Y., Wang, S.-J., Liu, B., Ma, Z.-L., Yang, M., Zhang, Z.-J., & Teng, G.-J.
Affiliations
  • Southeast University (CN)
  • Zhongda Hospital Southeast University (CN)
Venue
Radiology
Published
2010-08
Volume
256
Issue
2
Pages
598-606
ISSN
  • 0033-8419 (ISSN-L)
  • 1527-1315
OpenAlex
W2011502145
Cited by
320
References
34
Citations by year
2026: 7 · 2025: 11 · 2024: 13 · 2023: 17 · 2022: 12 · 2021: 31 · 2020: 25 · 2019: 21 · 2018: 22 · 2017: 27 · 2016: 12 · 2015: 15 · 2014: 28 · 2013: 25 · 2012: 26
FWCI
15.32
Type
journal article
Language
en
Open access
closed
Locations
  • Radiology (publishedVersion)
  • PubMed (publishedVersion)
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, posterior cingulate cortex, default mode network, disease progression, medial prefrontal cortex, precuneus, cuneus, hippocampus, visual cortex, frontoparietal connectivity
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Brain, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Nerve Net, Neural Pathways

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