埃尔戈氨酸通过改善线粒体损伤和减少D-银糖诱导的衰老模型中的神经炎症来改善认知功能
Fangyang Chen1, Botao Wang2, Xin Sun2
1College of Food Science and Technology, Key Laboratory of Environment Correlative Food Science, Huazhong Agricultural University, Wuhan 430070, China. likaikai@mail.hzau.edu.cn.
Food & function
|November 12, 2024
概括
在老年小鼠中,勃陀氨酸 (EGT) 补充改善了记忆力和神经元健康. 这种抗氧化氨基酸抗氧化压力,增强线粒体功能,为与年龄相关的认知衰退提供潜在的饮食策略.
科学领域:
- 生物化学 生物化学
- 神经科学是一个神经科学.
- 老年学是一门学科.
背景情况:
- 欧戈氨酸 (EGT) 是一种天然存在的含硫氨基酸,以其强大的抗氧化特性而闻名.
- 衰老与认知能力下降,氧化压力和神经元功能受损有关.
研究的目的:
- 在D-银糖诱导的老鼠老化模型中研究埃尔戈氨酸 (EGT) 的抗衰老作用.
- 探索EGT对认知功能,神经元健康,氧化应激和线粒体通路的影响.
主要方法:
- 使用D-银糖诱导的老鼠老化模型.
- 进行EGT干预并评估认知表现 (识别记忆,学习和记忆能力).
- 分析了神经元数量,cAMP和BDNF水平,PSD95表达,氧化应激标志物 (MDA,T-SOD) 和线粒体功能通路 (AMPK/SIRT1/PGC-1α).
主要成果:
- 在老年小鼠中,EGT显著改善了识别记忆和学习能力.
- EGT逆转了D-银糖诱导的神经元数量的减少,并提高了cAMP,BDNF和PSD95水平.
- 通过Nrf2/HO-1通路,EGT减轻了氧化应激,通过AMPK/SIRT1/PGC-1α通路改善了线粒体功能.
- 保护EGT免受D-银糖诱导的海马神经元损伤.
结论:
- 欧戈氨酸显示出显著的抗衰老作用,特别是在改善认知功能和神经元健康方面.
- 通过减少氧化应激和增强线粒体功能,EGT减轻了与年龄相关的记忆障碍.
- EGT提出了一个有希望的饮食策略,用于打击因年龄而导致的认知衰退和神经退行.
相关概念视频
01:37Mitochondria
11.2K
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
11.2K
01:26Aging
37
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
37