生物标志物 生物标志物
Ekaterina Rogaeva1,2, Xuelin Tang1,3, Vishaal Sumra1
1Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, ON, Canada.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
运动员重复的头部冲击与大脑衰老有关. 一项新的研究发现,反映生物衰老的DNA甲基化年龄加速 (DNAmFitAA) 随着脑震荡的数量增加而增加,这表明头部创伤和加速衰老之间存在联系.
科学领域:
- 神经科学是一个神经科学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 运动医学 运动医学
背景情况:
- 接触运动中重复的头部冲击与长期的神经问题有关,如认知缺陷和大脑缩.
- 生物衰老可以使用DNA甲基化 (DNAm) 资料进行评估,包括DNAm-age加速 (DNAmAA) 和DNAmAA-残留 (DNAmAAr).
- 这项研究探讨了前运动员大脑衰老和表观遗传衰老措施之间的关系,包括新的DNAmFit-age.
研究的目的:
- 调查前接触体育运动员大脑衰老和表观遗传衰老之间的联系.
- 为了检查DNA甲基化年龄加速 (DNAmAA,DNAmAAr,DNAmFitAA) 和大脑结构之间的关联.
- 为了确定DNAmFit-age加速是否与运动员经历的脑震荡数量相关.
主要方法:
- 研究了126名前接触体育运动员 (平均年龄54.5岁),他们有脑震荡病史.
- 从血液中分析了DNA甲基化数据,以计算DNAmFit-age,DNAm-age和DNAmAAr.
- 来自MRI扫描的区域灰质体积与表观遗传年龄测量相关评估.
主要成果:
- 时间学年龄与大脑体积和皮层厚度有显著的相关性.
- 表观遗传年龄测量 (DNAmAA,DNAmAAr,DNAmFitAA) 随着时间的推移保持稳定,但与大脑结构没有相关性.
- 在DNAmFit-age加速 (DNAmFitAA) 和脑震荡数量之间发现了显著的正相关性.
结论:
- 年代学年龄与前运动员的大脑缩有关.
- 增加DNAmFit-age加速与这一队列中更多的脑震荡有关.
- 需要进一步的研究来验证这些发现,并探索与神经退行症和其他表观遗传钟的联系.
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