2012 AAN年会:研究揭示慢性创伤性脑病机制

2012-05-29 陈蓉 爱唯医学网

       美国神经病学会(AAN)年会上公布的一项对各种拳手的纵向研究的初步结果显示,持续击打头部的累积效应可能需要数年才会转化为明显的认知功能改变,但解剖改变出现的时间比认知改变出现的时间提前一半。        这项研究由克利夫兰医院Lou Ruvo脑健康中心的Ch

       美国神经病学会(AAN)年会上公布的一项对各种拳手的纵向研究的初步结果显示,持续击打头部的累积效应可能需要数年才会转化为明显的认知功能改变,但解剖改变出现的时间比认知改变出现的时间提前一半。

       这项研究由克利夫兰医院Lou Ruvo脑健康中心的Charles Bernick博士及其同事进行。研究者对受试者进行MRI脑体积测定和计算机认知功能检查。此外,还检查情绪障碍、冲动性和言语能力。研究者从自我报告 和已发表的记录中收集有关搏斗史的信息,包括搏斗年数和每年的搏斗次数。研究者还检查了一些可能是损伤标志物的指标,包括生物标志物、遗传标志物和血清蛋 白。

       在初步分析中,研究者根据搏斗的中位年数将109名拳手分成3组(6年以下、6~12年和12年以上),并通过相关分析来分析暴露变量、脑体积与认知结果之间的关系。

       结果显示,32名搏斗年数≥6年的拳手的海马和丘脑体积小于其他拳手。但认知改变(记忆测验评分较低和处理速度评分较低)仅见于39名搏斗年数超过12年的拳手。在校正年龄效应后,仍观察到这些关联。

       Bernick博士表示,上述研究结果表明,如果等到出现症状才进行诊治的话,那么疾病可能已经进展到一定阶段。临床医生应尽早评估拳手的潜在损伤情况。 休息一段时间或甚至停止搏斗生涯可能有助于阻止神经退行性改变,但这还有待于进一步证实。该研究将继续对已经入组的受试者进行跟踪,并在今后4年陆续招募 达600人。

       这项进行中的研究由Lincy基金会资助。Bernick博士声明无经济利益冲突。


来源:Fighters’ Study Gives Clues to Chronic Traumatic Encephalopathy.medconnect,18-May-12

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    2012-11-05 showtest
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    2012-05-31 amyloid
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    2012-05-31 bluefate123

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     2012年4月21-28日,第64届美国神经病学会年会在美国新奥尔良召开。会上,研究人员指出,女性和诊断多发性硬化(MS)时年龄小是随后两年或更长时间内疾病呈“良性”的关键标志。       英国伦敦帝国学院的Antonio Scalfari指出,在病程超过10年的“良性”患者中,性别为女性与20年