Journal
JOURNAL OF ALZHEIMERS DISEASE
Volume 82, Issue 4, Pages 1499-1511Publisher
IOS PRESS
DOI: 10.3233/JAD-210481
Keywords
Alzheimer's disease; classification; cognitive impairment; default mode network; regulation; subsystems
Categories
Funding
- National Natural Science Foundation of China [81822013, 82071186]
- Jiangsu ProvincialKey Medical Talents [ZDRCA2016085]
- Key Research and Development Program of Jiangsu Province of China [BE2016610]
- National Key Research and Development Program of China [2016YFC1300500504]
- Jiangsu Province Key Medical Discipline [ZDXKA2016020]
- Alzheimer's Disease Neuroimaging Initiative (ADNI) (National Institutes of Health) [U01AG024904]
- DODADNI (Department of Defense) [W81XWH-12-2-0012]
- National Institute on Aging
- National Institute of Biomedical Imaging and Bioengineering
- AbbVie
- Alzheimer's Association
- Alzheimer's Drug Discovery Foundation
- Araclon Biotech
- BioClinica, Inc.
- Biogen
- BristolMyers Squibb Company
- CereSpir, Inc.
- Cogstate
- Eisai Inc.
- Elan Pharmaceuticals, Inc.
- Eli Lilly and Company
- EuroImmun
- F. Hoffmann-La Roche Ltd and its affiliated company Genentech, Inc.
- Fujirebio
- GE Healthcare
- IXICO Ltd.
- Janssen Alzheimer Immunotherapy Research &Development, LLC.
- Johnson & Johnson Pharmaceutical Research & Development LLC.
- Lumosity
- Lundbeck
- Merck Co., Inc.
- Meso Scale Diagnostics, LLC.
- NeuroRx Research
- Neurotrack Technologies
- Novartis Pharmaceuticals Corporation
- Pfizer Inc.
- Piramal Imaging
- Servier
- Takeda Pharmaceutical Company
- Transition Therapeutics
- Canadian Institutes of Health Research
Ask authors/readers for more resources
The study found that abnormal interaction patterns of DMN subsystems in the early stages of AD appeared as core-centered connection abnormalities, which may serve as potential neuroimaging features for monitoring the development of AD. The impaired cognition was found to be related to disturbances in the interactions between DMN subsystems, particularly in the core subsystem. Additionally, the abnormal regulatory processes of the core subsystem were significantly associated with the levels of cerebrospinal fluid A beta and tau in AD-spectrum patients.
Background: Abnormal default mode network (DMN) was associated with the progress of Alzheimer's disease (AD). Rather than treat the DMN as a unitary network, it can be further divided into three subsystems with different functions. Objective: It remains unclear the interactions of DMN subsystems associated with the progress of cognitive impairments and AD pathological features. Methods: This study has recruited 187 participants, including test data and verification data. Firstly, an imaging analysis approach was utilized to investigate disease-related differences in the interactions of DMN subsystems in test data (n = 149), including 42 cognitively normal subjects, 43 early mild cognitive impairment (EMCI), 32 late mild cognitive impairment (LMCI), and 32 AD patients. Brain-behavior-pathological relationships regarding to the interactions among DMN subsystems were then further examined. Secondly, DMN subsystems abnormalities for classifying AD spectrum population in the independent verification data (n = 38). Results: This study found that the impaired cognition relates to disturbances in the interactions between DMN subsystems but preferentially in core subsystem, and the abnormal regulatory processes of core subsystem were significantly associated with the levels of cerebrospinal fluid A beta and tau in AD-spectrum patients. Meantime, the nonlinear relationship between dysfunctional core subsystem and impaired cognition was observed as one progresses through the stages of MCI to AD. Importantly, this classification presented a higher sensitivity and specificity dependent on the core-centered connection abnormalities. Conclusion: The abnormal interaction patterns of DMN subsystems at an early stage of AD appeared and presented as core-centered connection abnormalities, which were the potential neuroimaging features for monitoring the development of AD.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available