FDG-PET hypermetabolism is associated with higher tau-PET in mild cognitive impairment at low amyloid-PET levels
Abstract Background FDG-PET hypermetabolism can be observed in mild cognitive impairment (MCI), but the link to primary pathologies of Alzheimer’s diseases (AD) including amyloid and tau is unclear. Methods Using voxel-based regression, we assessed local interactions between amyloid- and tau-PET on...
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doaj-9c1d3f77f60e4f428c33ed2d5c6678002020-11-25T03:43:28ZengBMCAlzheimer’s Research & Therapy1758-91932020-10-0112111210.1186/s13195-020-00702-6FDG-PET hypermetabolism is associated with higher tau-PET in mild cognitive impairment at low amyloid-PET levelsAnna Rubinski0Nicolai Franzmeier1Julia Neitzel2Michael Ewers3the Alzheimer’s Disease Neuroimaging Initiative (ADNI)Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-Universität LMUInstitute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-Universität LMUInstitute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-Universität LMUInstitute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-Universität LMUAbstract Background FDG-PET hypermetabolism can be observed in mild cognitive impairment (MCI), but the link to primary pathologies of Alzheimer’s diseases (AD) including amyloid and tau is unclear. Methods Using voxel-based regression, we assessed local interactions between amyloid- and tau-PET on spatially matched FDG-PET in 72 MCI patients. Control groups included cerebrospinal fluid biomarker characterized cognitively normal (CN, n = 70) and AD dementia subjects (n = 95). Results In MCI, significant amyloid-PET by tau-PET interactions were found in frontal, lateral temporal, and posterior parietal regions, where higher local tau-PET was associated with higher spatially corresponding FDG-PET at low levels of local amyloid-PET. FDG-PET in brain regions with a significant local amyloid- by tau-PET interaction was higher compared to that in CN and AD dementia and associated with lower episodic memory. Conclusion Higher tau-PET in the presence of low amyloid-PET is associated with abnormally increased glucose metabolism that is accompanied by episodic memory impairment.http://link.springer.com/article/10.1186/s13195-020-00702-6FDG-PETHypermetabolismTau-PETAmyloid-PETHyperactivationMild cognitive impairment |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Anna Rubinski Nicolai Franzmeier Julia Neitzel Michael Ewers the Alzheimer’s Disease Neuroimaging Initiative (ADNI) |
spellingShingle |
Anna Rubinski Nicolai Franzmeier Julia Neitzel Michael Ewers the Alzheimer’s Disease Neuroimaging Initiative (ADNI) FDG-PET hypermetabolism is associated with higher tau-PET in mild cognitive impairment at low amyloid-PET levels Alzheimer’s Research & Therapy FDG-PET Hypermetabolism Tau-PET Amyloid-PET Hyperactivation Mild cognitive impairment |
author_facet |
Anna Rubinski Nicolai Franzmeier Julia Neitzel Michael Ewers the Alzheimer’s Disease Neuroimaging Initiative (ADNI) |
author_sort |
Anna Rubinski |
title |
FDG-PET hypermetabolism is associated with higher tau-PET in mild cognitive impairment at low amyloid-PET levels |
title_short |
FDG-PET hypermetabolism is associated with higher tau-PET in mild cognitive impairment at low amyloid-PET levels |
title_full |
FDG-PET hypermetabolism is associated with higher tau-PET in mild cognitive impairment at low amyloid-PET levels |
title_fullStr |
FDG-PET hypermetabolism is associated with higher tau-PET in mild cognitive impairment at low amyloid-PET levels |
title_full_unstemmed |
FDG-PET hypermetabolism is associated with higher tau-PET in mild cognitive impairment at low amyloid-PET levels |
title_sort |
fdg-pet hypermetabolism is associated with higher tau-pet in mild cognitive impairment at low amyloid-pet levels |
publisher |
BMC |
series |
Alzheimer’s Research & Therapy |
issn |
1758-9193 |
publishDate |
2020-10-01 |
description |
Abstract Background FDG-PET hypermetabolism can be observed in mild cognitive impairment (MCI), but the link to primary pathologies of Alzheimer’s diseases (AD) including amyloid and tau is unclear. Methods Using voxel-based regression, we assessed local interactions between amyloid- and tau-PET on spatially matched FDG-PET in 72 MCI patients. Control groups included cerebrospinal fluid biomarker characterized cognitively normal (CN, n = 70) and AD dementia subjects (n = 95). Results In MCI, significant amyloid-PET by tau-PET interactions were found in frontal, lateral temporal, and posterior parietal regions, where higher local tau-PET was associated with higher spatially corresponding FDG-PET at low levels of local amyloid-PET. FDG-PET in brain regions with a significant local amyloid- by tau-PET interaction was higher compared to that in CN and AD dementia and associated with lower episodic memory. Conclusion Higher tau-PET in the presence of low amyloid-PET is associated with abnormally increased glucose metabolism that is accompanied by episodic memory impairment. |
topic |
FDG-PET Hypermetabolism Tau-PET Amyloid-PET Hyperactivation Mild cognitive impairment |
url |
http://link.springer.com/article/10.1186/s13195-020-00702-6 |
work_keys_str_mv |
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