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Escalation of Tau Accumulation after a Traumatic Brain Injury - Findings from Positron Emission Tomography1.36 MB
Published VersionCC BY V4.0, Open Access
Journal article
Escalation of Tau Accumulation after a Traumatic Brain Injury: Findings from Positron Emission Tomography
Brain Sciences, Vol.12(7), pp.1-15
2022
PMID: 35884683
Appears in Thompson Institute Research Collection
Abstract
Traumatic brain injury (TBI) has come to be recognized as a risk factor for Alzheimer’s disease (AD), with poorly understood underlying mechanisms. We hypothesized that a history of TBI would be associated with greater tau deposition in elders with high-risk for dementia. A Groups of 20 participants with self-reported history of TBI and 100 without any such history were scanned using [18F]-AV1451 positron emission tomography as part of the Alzheimer’s Disease Neuroimaging Initiative (ADNI). Scans were stratified into four groups according to TBI history, and by clinical dementia rating scores into cognitively normal (CDR = 0) and those showing cognitive decline (CDR ≥ 0.5). We pursued voxel-based group comparison of [18F]-AV1451 uptake to identify the effect of TBI history on brain tau deposition, and for voxel-wise correlation analyses between [18F]-AV1451 uptake and different neuropsychological measures and cerebrospinal fluid (CSF) biomarkers. Compared to the TBI-/CDR ≥ 0.5 group, the TBI+/CDR ≥ 0.5 group showed increased tau deposition in the temporal pole, hippocampus, fusiform gyrus, and inferior and middle temporal gyri. Furthermore, the extent of tau deposition in the brain of those with TBI history positively correlated with the extent of cognitive decline, CSF-tau, and CSF-amyloid. This might suggest TBI to increase the risk for tauopathies and Alzheimer’s disease later in life.
Details
- Title
- Escalation of Tau Accumulation after a Traumatic Brain Injury: Findings from Positron Emission Tomography
- Authors
- Abdalla Z Mohamed (Author) - University of the Sunshine Coast, Queensland, Thompson InstitutePaul Cumming (Author) - Queensland University of TechnologyFatima A Nasrallah (Corresponding Author) - The University of QueenslandAlzheimer's Disease Neuroimaging Initiative (Author)
- Publication details
- Brain Sciences, Vol.12(7), pp.1-15
- Publisher
- MDPI AG
- Date published
- 2022
- DOI
- 10.3390/brainsci12070876
- ISSN
- 2076-3425
- PMID
- 35884683
- Copyright note
- This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
- Organisation Unit
- University of the Sunshine Coast, Queensland; Thompson Institute
- Language
- English
- Record Identifier
- 99658298602621
- Output Type
- Journal article
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