当前时间:2022/10/6 19:05:15
当前位置:首页 >> 最新医学研究

运动中的头部创伤何时导致记忆丧失?

发布时间:2012/4/29 7:56:26    发布者:中国中西医结合医学会    点击量:1048

一项新研究表明:在搏击运动中可能受到的头部打击或头部创伤,可能是影响记忆和思维能力的一个起点,可导致慢性创伤性脑病(CET)。其中CET是一种退行性脑病,多发于运动员和具有多种震荡与脑损伤历史的人,只有通过死后尸检才能诊断,症状包括记忆丧失、攻击和思考困难。

 

该研究于4月18日在新奥尔良举行美国神经学学会第64届年会上公布。尽管大家都知道拳击和其他搏击动力与大脑损伤相关,但很少了解这个过程如何发展和什么可能发生CTE。

此研究涉及35个拳击家和43混合武术运动员,他们平均年龄29岁,是正在进行的职业格斗脑健康研究的一部分。他们进行计算机测试以测量记忆和思维能力,并进行核磁共振成像大脑扫描。根据自我报告和公开记录,记录其搏击年限与数量。现将他们分为两组:搏击年限9年或9年以下与搏击年限9年以上。

在这两组中,搏击年限越长、每年搏击次数越多的人就越可能有越小容积的三个大脑域。对搏击年限低于9年的人,搏击年限或每年搏击次数与记忆思维测试结果之间不存在关联。但是,对于搏击年限9年或更长的人来说,每年搏击次数多的人的记忆思维测试比每年搏击次数少的人更糟糕。这表明,似乎存在有一种阈值,在此阈值处继续重复打击大脑就会开始导致可衡量的记忆和思维变化,尽管脑容积变化可以较早被发现。这项研究由Lincy基金会资助。(生物谷bioon.com)

 

Breaking Point: When Does Head Trauma in Sports Lead to Memory Loss?

sciencedaily/Apr. 18, 2012

ScienceDaily (Apr. 18, 2012) - A new study suggests there may be a starting point at which blows to the head or other head trauma suffered in combat sports start to affect memory and thinking abilities and can lead to chronic traumatic encephalopathy, or CTE, in the brain.

The research was released April 18 and will be presented as part of the Emerging Science program at the American Academy of Neurology's 64th Annual Meeting in New Orleans April 21 to April 28, 2012.

"While we already know that boxing and other combat sports are linked to brain damage, little is known about how this process develops and who may be on the path to developing CTE, which is a degenerative brain disease found in athletes and others with a history of multiple concussions and brain damage," said study author Charles Bernick, MD, of the Cleveland Clinic in Cleveland and a member of the American Academy of Neurology. CTE is only diagnosed through autopsy after death, but symptoms include memory loss, aggression and difficulty thinking.

The study involved 35 boxers and 43 mixed martial arts athletes with an average age of 29 who were part of the ongoing Professional Fighters Brain Health Study. The fighters were given computer tests that measured memory and thinking skills and underwent MRI brain scans. Years of fighting and number of fights were recorded based on self-reporting and published records. The fighters were then split into two groups: those who fought for nine or fewer years and those with more than nine years of fighting history.

In both groups, those with more years of fighting and more fights per year were more likely to have lower brain volumes in three areas of the brain. In those with fewer than nine years of fighting, there was no relationship between the years of fighting or the number of fights per year and the results on memory and thinking tests. But for those who had fought for nine or more years, those with more fights per year performed worse on the thinking and memory tests than those with fewer fights per year.

"Our study shows there appears to be a threshold at which continued repetitive blows to the brain begin to cause measurable changes in memory and thinking, despite brain volume changes that can be found earlier," said Bernick.

The study was supported by the Lincy Foundation.