深度学习揭示了高度对衰老的不同影响
Amanuel Abraha Teklu1,2, Indra Heckenbach1, Michael Angelo Petr3
1Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark.
GeroScience
|January 15, 2025
概括
埃塞俄比亚的高海拔生活与较低的疾病负担和更长的预期寿命有关,尽管生物衰老迹象更快. 随着高度的增加,DNA损伤引起的衰老会减少,这表明氧化应激驱动衰老.
科学领域:
- 老年学是一门学科.
- 环境健康 环境健康
- 生物医学科学 生物医学科学
背景情况:
- 衰老是多因素的,受遗传学,环境和生活方式的影响.
- 高空暴露,包括缺氧和紫外线辐射,可能会影响衰老和相关疾病.
- 埃塞俄比亚的高度多样性为研究高度对衰老的影响提供了一个独特的环境.
研究的目的:
- 调查高海拔对埃塞俄比亚老龄化和与年龄有关的疾病负担的影响.
- 评估与高度相关的生物衰老标志物.
- 探索高度,疾病和衰老之间的关系.
主要方法:
- 利用全球健康数据交换 (GHDx) 和埃塞俄比亚健康数据进行区域分析.
- 进行了一项横截面研究,比较了埃塞俄比亚提格莱的高地和低地居民.
- 通过面部照片和外围血液单核细胞 (PBMC) 衰老预测器来评估生物衰老.
主要成果:
- 高海拔地区的风险暴露率较低,疾病负担减少 (DALYs),预期寿命增加.
- 随着高度的增加,面部衰老加速,可能是由于更高的紫外线照射.
- 随着海拔高度的增加,PBMC (单细胞和淋巴细胞) 的DNA损伤诱导衰老的减少被观察到.
结论:
- 埃塞俄比亚的高度与减少疾病负担和降低死亡率有关.
- 生物衰老标志物呈现出一个复杂的画面,面部衰老速度更快,但在更高的海拔地区细胞衰老减少.
- 这些发现支持了氧化应激,可能受高度影响,在衰老过程中发挥作用的假设.
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