Tau Positron Emission Tomography and Neurocognitive Function Among Former Professional American-Style Football Players.
Details
Serval ID
serval:BIB_0D758AD024CD
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Tau Positron Emission Tomography and Neurocognitive Function Among Former Professional American-Style Football Players.
Journal
Journal of neurotrauma
ISSN
1557-9042 (Electronic)
ISSN-L
0897-7151
Publication state
Published
Issued date
08/2023
Peer-reviewed
Oui
Volume
40
Number
15-16
Pages
1614-1624
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Publication Status: ppublish
Abstract
American-style football (ASF) players experience repetitive head impacts that may result in chronic traumatic encephalopathy neuropathological change (CTE-NC). At present, a definitive diagnosis of CTE-NC requires the identification of localized hyperphosphorylated Tau (p-Tau) after death via immunohistochemistry. Some studies suggest that positron emission tomography (PET) with the radiotracer [ <sup>18</sup> F]-Flortaucipir (FTP) may be capable of detecting p-Tau and thus establishing a diagnosis of CTE-NC among living former ASF players. To assess associations between FTP, football exposure, and objective neuropsychological measures among former professional ASF players, we conducted a study that compared former professional ASF players with age-matched male control participants without repetitive head impact exposure. Former ASF players and male controls underwent structural magnetic resonance imaging and PET using FTP for p-Tau and [ <sup>11</sup> C]-PiB for amyloid-β. Former players underwent neuropsychological testing. The ASF exposure was quantified as age at first exposure, professional career duration, concussion signs and symptoms burden, and total years of any football play. Neuropsychological testing included measures of memory, executive functioning, and depression symptom severity. P-Tau was quantified as FTP standardized uptake value ratios (SUVR) and [ <sup>11</sup> C]-PiB by distribution volume ratios (DVR) using cerebellar grey matter as the reference region. There were no significant differences in [ <sup>18</sup> F]-FTP uptake among former ASF players (n = 27, age = 50 ± 7 years) compared with control participants (n = 11, age = 55 ± 4 years), nor did any participant have significant amyloid-β burden. Among ASF participants, there were no associations between objective measures of neurocognitive functioning and [ <sup>18</sup> F]-FTP uptake. There was a marginally significant difference, however, between [ <sup>18</sup> F]-FTP uptake isolated to the entorhinal cortex among players in age-, position-, and race-adjusted models (p = 0.05) that may represent an area of future investigation. The absence of increased [ <sup>18</sup> F]-FTP uptake in brain regions previously implicated in CTE among former professional ASF players compared with controls questions the utility of [ <sup>18</sup> F]-FTP PET for clinical evaluation in this population.
Keywords
Humans, Male, Adult, Middle Aged, Football, Chronic Traumatic Encephalopathy/pathology, Brain/pathology, Brain Concussion/pathology, Positron-Emission Tomography, Amyloid beta-Peptides, tau Proteins/metabolism, FTP, PET, TBI, concussion, football
Pubmed
Web of science
Open Access
Yes
Create date
03/07/2023 15:35
Last modification date
08/08/2024 6:29