| Autor: |
L. E. M. Wisse, R. de Flores, L. Xie, S. R. Das, C. T. McMillan, J. Q. Trojanowski, M. Grossman, E. B. Lee, D. Irwin, P. A. Yushkevich, D. A. Wolk, on behalf of the Alzheimer’s Disease NeuroImaging Initiative |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Alzheimer’s Research & Therapy, Vol 13, Iss 1, Pp 1-11 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1758-9193 |
| DOI: |
10.1186/s13195-021-00835-2 |
| Popis: |
Abstract Background Little is known about the heterogeneous etiology of suspected non-Alzheimer’s pathophysiology (SNAP), a group of subjects with neurodegeneration in the absence of β-amyloid. Using antemortem MRI and pathological data, we investigated the etiology of SNAP and the association of neurodegenerative pathologies with structural medial temporal lobe (MTL) measures in β-amyloid-negative subjects. Methods Subjects with antemortem MRI and autopsy data were selected from ADNI (n=63) and the University of Pennsylvania (n=156). Pathological diagnoses and semi-quantitative scores of MTL tau, neuritic plaques, α-synuclein, and TDP-43 pathology and MTL structural MRI measures from antemortem T1-weighted MRI scans were obtained. β-amyloid status (A+/A−) was determined by CERAD score and neurodegeneration status (N+/N−) by hippocampal volume. Results SNAP reflects a heterogeneous group of pathological diagnoses. In ADNI, SNAP (A−N+) had significantly more neuropathological diagnoses than A+N+. In the A− group, tau pathology was associated with hippocampal, entorhinal cortex, and Brodmann area 35 volume/thickness and TDP-43 pathology with hippocampal volume. Conclusion SNAP had a heterogeneous profile with more mixed pathologies than A+N+. Moreover, a role for TDP-43 and tau pathology in driving MTL neurodegeneration in the absence of β-amyloid was supported. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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