Alzheimer's disease is incurable at the moment. If it can be appropriately diagnosed, the correct treatment can postpone the patient's illness. To aid in the diagnosis of Alzheimer's disease and to minimize the time and expense associated with manual diagnosis, a machine learning technique is employed, and a transfer learning method based on 3D MRI data is proposed. Machine learning algorithms can dramatically reduce the time and effort required for human treatment of Alzheimer's disease. This approach extracts bottleneck features from the M-Net migration network and then adds a top layer to supervised training to further decrease the dimensionality and delete portions. As a consequence, the transfer network presented in this study has several advantages in terms of computational efficiency and training time savings when used as a machine learning approach for AD-assisted diagnosis. Finally, the properties of all subject slices are combined and trained in the classification layer, completing the categorization of Alzheimer's disease symptoms and standard control. The results show that this strategy has a 1.5 percentage point better classification accuracy than the one that relies exclusively on VGG16 to extract bottleneck features. This strategy could cut the time it takes for the network to learn and improve its ability to classify things. The experiment shows that the method works by using data from OASIS. A typical transfer learning network's classification accuracy is about 8% better with this method than with a typical network, and it takes about 1/60 of the time with this method.
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http://dx.doi.org/10.1155/2022/9092289 | DOI Listing |
Alzheimers Res Ther
January 2025
Department of Neuroscience "Rita Levi Montalcini", University of Turin, Via Cherasco 15, Turin, 10126, Italy.
Background: Alzheimer's disease (AD) is a progressive neurodegenerative disorder with both genetic and environmental factors contributing to its pathogenesis. While early-onset AD has well-established genetic determinants, the genetic basis for late-onset AD remains less clear. This study investigates a large Italian family with late-onset autosomal dominant AD, identifying a novel rare missense variant in GRIN2C gene associated with the disease, and evaluates the functional impact of this variant.
View Article and Find Full Text PDFJ Gen Intern Med
January 2025
Center for Chronic Disease Research and Policy, University of Chicago Medicine, Chicago, IL, USA.
Background: Little is known about the population of Medicare beneficiaries with both chronic kidney disease (CKD) and Alzheimer's disease and related dementias (ADRD).
Methods: Using data from Medicare fee-for-service (FFS) beneficiaries aged 65 and over identified through 2011-2019 Master Beneficiary Summary File (MBSF), we estimated the size, growth, and racial-ethnic characteristics of the ADRD and CKD populations. Individuals were classified as having ADRD and CKD based on CMS Chronic Conditions Data Warehouse (CCW) indicators in the MBSF Chronic Conditions file.
Nat Genet
January 2025
Division of Computational Biomedicine, Department of Biological Chemistry, University of California, Irvine, Irvine, CA, USA.
Tandem repeat (TR) size variation is implicated in ~50 neurological disorders, yet its impact on gene regulation in the human brain remains largely unknown. In the present study, we quantified the impact of TR size variation on brain gene regulation across distinct molecular phenotypes, based on 4,412 multi-omics samples from 1,597 donors, including 1,586 newly sequenced ones. We identified ~2.
View Article and Find Full Text PDFNat Commun
January 2025
Department for NMR-based Structural Biology, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany.
The pathological deposition of tau and amyloid-beta into insoluble amyloid fibrils are pathological hallmarks of Alzheimer's disease. Molecular chaperones are important cellular factors contributing to the regulation of tau misfolding and aggregation. Here we reveal an Hsp90-independent mechanism by which the co-chaperone p23 as well as a molecular complex formed by two co-chaperones, p23 and FKBP51, modulates tau aggregation.
View Article and Find Full Text PDFJ Prev Alzheimers Dis
January 2025
Department of Neurology, Brigham and Women's Hospital, Boston, MA, 02115, USA. Electronic address:
Background: The multi-day Boston Remote Assessment of Neurocognitive Health (BRANCH) is a remote, web-based assessment designed to capture the earliest cognitive changes in the preclinical stage of Alzheimer's disease (AD). It has been validated in unimpaired older adults, but as individuals progress on the AD continuum, assessments need to remain feasible and valid at different clinical stages. The focus of this study was to assess feasibility and validity of multi-day BRANCH in participants with and without cognitive impairment.
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