Concussion: Why Women Face Greater Cognitive Impact
- Women may be more susceptible to concussions and experiance longer recovery periods due to structural differences in their brains, according to a new preclinical study from the University...
- Concussions, also known as mild traumatic brain injuries (TBI), affect approximately 50 million people worldwide each year.
- While men account for the majority of emergency room visits for concussions, this is largely attributed to their greater participation in activities with a higher risk of head...
Female Brains Show Higher Concussion Risk, Penn study Finds
Women may be more susceptible to concussions and experiance longer recovery periods due to structural differences in their brains, according to a new preclinical study from the University of Pennsylvania’s Perelman School of Medicine. The research, published in Acta Neuropathologica, suggests that key brain structures responsible for signaling are narrower and less dense in females, making them more vulnerable to damage from brain injuries.
Concussions, also known as mild traumatic brain injuries (TBI), affect approximately 50 million people worldwide each year. for more than 15% of those affected,lasting cognitive problems such as difficulty concentrating,learning,remembering,and making decisions can occur.
While men account for the majority of emergency room visits for concussions, this is largely attributed to their greater participation in activities with a higher risk of head injuries. Recent observations, however, indicate that female athletes have a higher concussion rate and worse outcomes than their male counterparts in the same sports. Understanding the role of brain structure is key to understanding these differences.
The study used animal models to examine brain differences after a concussion. Researchers discovered that females had a higher concentration of smaller axons,which are more prone to injury. They also found that females experienced a greater loss of sodium channels, which are essential for brain signaling, after a concussion. These findings highlight the roles that sex plays in brain injury.
“Clinicians have observed for a long time that females suffer from concussion at higher rates than males in the same sports, and that they take longer to recover cognitive function, but couldn’t explain the underlying mechanisms of this phenomenon,” said dr. Douglas Smith, professor of Neurosurgery and director of Penn’s Center for Brain Injury and Repair. “The variances in brain structures of females and males not only illuminate why this disparity exists, but also exposes biomarkers, such as axon protein fragments, that can be measured in the blood to determine injury severity, monitor recovery, and eventually help identify and develop treatments that help patients repair these damaged structures and restore cognitive function.”
Axons, which connect neurons and facilitate communication throughout the brain, are essential for learning and communication. These delicate structures are particularly vulnerable to damage from concussions. Sodium channels power communication between axons, acting as the brain’s electrical grid. Damage to axons impairs these channels, leading to a loss of brain signaling and subsequent cognitive impairment.This research underscores the critical role of axons in brain health.
Smith added that understanding the differences in brain structure could provide insights into other conditions affecting axons, such as Alzheimer’s and Parkinson’s disease. He suggested further research to explore how sex influences brain structure and function, possibly revealing why female brains might be more vulnerable to neurodegeneration.
What’s next
Further studies are planned to investigate potential treatments that can definitely help repair damaged brain structures and restore cognitive function in both males and females following a concussion.