The Association Between White-matter Tract Abnormalities, and Neuropsychiatric and Cognitive Symptoms in Retired Professional Football Players with Multiple Concussions

Overview

Journal J Neurol

Specialty Neurology

Date 2016 May 5

PMID 27142715

Citations 37

Authors

Namita Multani

Ruma Goswami

Mozhgan Khodadadi

Ahmed Ebraheem

Karen D Davis

Charles H Tator

Richard Wennberg

David J Mikulis

Leo Ezerins

Maria Carmela Tartaglia

Affiliations

Soon will be listed here.

Abstract

Retired professional athletes, who have suffered repetitive concussions, report symptoms of depression, anxiety, and memory impairment over time. Moreover, recent imaging data suggest chronic white-matter tract deterioration in sport-related concussion. The aim of this study is to evaluate the impact of repetitive concussions in retired professional football players on white-matter tracts, and relate these changes to neuropsychological function. All subjects (18 retired professional football players and 17 healthy controls) underwent imaging, neuropsychological assessment, and reported on concussion-related symptoms. Whole brain tract-based spatial statistics analysis revealed increased axial diffusivity in the right hemisphere of retired players in the (1) superior longitudinal fasciculus (SLF), (2) corticospinal tract, and (3) anterior thalamic radiations, suggesting chronic axonal degeneration in these tracts. Moreover, retired players report significantly higher neuropsychiatric and cognitive symptoms than healthy controls, and worsening of these symptoms since their last concussion. Loss of integrity in the right SLF significantly correlated with participants' visual learning ability. In sum, these results suggest that repetitive concussions in retired professional football players are associated with focal white-matter tract abnormalities that could explain some of the neuropsychiatric symptoms and cognitive deficits experienced by these retired athletes.

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