Lewy Body Pathology and Chronic Traumatic Encephalopathy Associated With Contact Sports.
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ABSTRACT: Traumatic brain injury has been associated with increased risk of Parkinson disease and parkinsonism, and parkinsonism and Lewy body disease (LBD) can occur with chronic traumatic encephalopathy (CTE). To test whether contact sports and CTE are associated with LBD, we compared deceased contact sports athletes (n?=?269) to cohorts from the community (n?=?164) and the Boston University Alzheimer disease (AD) Center (n?=?261). Participants with CTE and LBD were more likely to have ?-amyloid deposition, dementia, and parkinsonism than CTE alone (p?8?years of play best predicted neocortical LBD (ROC analysis, OR = 6.24, 95% CI = 1.5-25, p?=?0.011), adjusting for age, sex, and APOE ?4 allele status. Clinically, dementia was significantly associated with neocortical LBD, CTE stage, and AD; parkinsonism was associated with LBD pathology but not CTE stage. Contact sports participation may increase risk of developing neocortical LBD, and increased LBD frequency may partially explain extrapyramidal motor symptoms sometimes observed in CTE.
SUBMITTER: Adams JW
PROVIDER: S-EPMC6097837 | biostudies-literature | 2018 Sep
REPOSITORIES: biostudies-literature
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