Featured Research

from universities, journals, and other organizations

Amateur Boxing Linked To Brain Cell Injury

Date:
September 18, 2006
Source:
JAMA and Archives Journals
Summary:
A study of 14 Swedish amateur boxers suggests that they have higher levels of certain chemicals in their cerebrospinal fluid in the days following a bout, indicating injuries to neurons and other cells important to brain function, according to a report in the September issue of Archives of Neurology, one of the JAMA/Archives journals.

A study of 14 Swedish amateur boxers suggests that they have higher levels of certain chemicals in their cerebrospinal fluid in the days following a bout, indicating injuries to neurons and other cells important to brain function, according to a report in the September issue of Archives of Neurology, one of the JAMA/Archives journals.

Related Articles


About 20 percent of professional boxers develop chronic traumatic brain injury, according to background information in the article. Some studies have suggested that amateur boxers also damage their nervous systems, but because their shorter bouts allow fewer blows to the head and because they must wear safety equipment, the effects tend to be less severe. These studies have been based on assessment of thinking, learning, memory and other brain functions long after boxing, rather than an immediate test performed soon after a fight.

Henrik Zetterberg, M.D., Ph.D., The Sahlgrenska Academy at Gφteborg University, Gφteborg, Sweden, and colleagues obtained spinal fluids (via spinal tap) from 14 amateur boxers (11 men and three women, average age 22 years) seven to 10 days after a bout and again three months later, after a rest from boxing. At the first assessment, the boxers reported how many hits to the head they received during the match and underwent physical and neurologic examinations; none showed signs of brain injury. The researchers also tested the cerebrospinal fluids of 10 healthy men who were not boxers as controls. Levels of several chemicals that indicate damage to brain cells (neurons) and their axons, the thread-like extensions of the cell that reach toward other brain cells to transmit electrical impulses, were measured.

Seven to 10 days after a boxing match, the group of boxers had higher average levels of chemicals known as neurofilament light protein and total tau than they did three months later. "The cerebrospinal fluid levels of these proteins increase in disorders with neuronal and axonal degeneration and damage, and the increase is known to correlate with the size of the brain lesion," the authors write. "When applied to the results of this study, the increases in neurofilament protein and total tau probably reflect damage to neuronal axons from hits to the head during a bout." They also had elevated levels of glial fibrillary acidic protein, which indicates damage to the astroglia, specialized cells that surround neurons to insulate and support them. An increase in this chemical was also recently found in patients who experienced severe brain injury, and the levels were linked to the patient's clinical outcome. Levels of all three chemicals were significantly higher in the seven boxers who had sustained more than 15 hits to the head or experienced grogginess during or after a bout, compared with those who had 15 or fewer hits to the head and no grogginess.

Compared with the non-boxers, immediately after a bout the boxers had higher levels of neurofilament light protein and glial fibrillary acidic protein. Three months later, the boxers still had higher levels of neurofilament light protein than the control subjects.

"Amateur boxing is associated with acute neuronal and astroglial injury," the authors conclude. "If verified in longitudinal studies with extensive follow-up regarding the clinical outcome, analyses of cerebrospinal fluid may provide a scientific basis for medical counseling of athletes after boxing or head injury."


Story Source:

The above story is based on materials provided by JAMA and Archives Journals. Note: Materials may be edited for content and length.


Cite This Page:

JAMA and Archives Journals. "Amateur Boxing Linked To Brain Cell Injury." ScienceDaily. ScienceDaily, 18 September 2006. <www.sciencedaily.com/releases/2006/09/060915204035.htm>.
JAMA and Archives Journals. (2006, September 18). Amateur Boxing Linked To Brain Cell Injury. ScienceDaily. Retrieved December 17, 2014 from www.sciencedaily.com/releases/2006/09/060915204035.htm
JAMA and Archives Journals. "Amateur Boxing Linked To Brain Cell Injury." ScienceDaily. www.sciencedaily.com/releases/2006/09/060915204035.htm (accessed December 17, 2014).

Share This


More From ScienceDaily



More Mind & Brain News

Wednesday, December 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

1st Responders Trained for Autism Sensitivity

1st Responders Trained for Autism Sensitivity

AP (Dec. 16, 2014) — More departments are ordering their first responders to sit in on training sessions that focus on how to more effectively interact with those with autism spectrum disorder (Dec. 16) Video provided by AP
Powered by NewsLook.com
Guys Are Idiots, According To Sarcastic Study

Guys Are Idiots, According To Sarcastic Study

Newsy (Dec. 12, 2014) — A study out of Britain suggest men are more idiotic than women based on the rate of accidental deaths and other factors. Video provided by Newsy
Powered by NewsLook.com
Believing in Father Christmas Good for Children's Imaginations

Believing in Father Christmas Good for Children's Imaginations

AFP (Dec. 12, 2014) — As the countdown to Christmas gets underway, so too does the Father Christmas conspiracy. But psychologists say that telling our children about Santa, flying reindeer and elves is good for their imaginations. Duration: 01:57 Video provided by AFP
Powered by NewsLook.com
Your Airplane Seat Choice Says a Lot About You

Your Airplane Seat Choice Says a Lot About You

Buzz60 (Dec. 11, 2014) — Are you an aisle or window seat person? Expedia and top psychologists say that choice says a lot about your personality. Sean Dowling (Seandowlingtv) has more. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins