生物标志物 生物标志物
Sitong Zhou1, Kamil Borkowski2, Angela M Zivkovic2
1University of California Davis Medical Center, Sacramento, CA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
阿尔茨海默病 (AD) 涉及炎症,在LDL和VLDL等脂蛋白中发生了氧化脂蛋白 (氧化脂类) 的改变. 这些变化是性别和ApoE特定的,提供潜在的AD生物标志物.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 利皮多米克 (Lipidomics) 是一种消化剂.
背景情况:
- 炎症是阿尔茨海默氏症 (AD) 病理学的核心.
- 氧化脂类衍生物氧化脂类衍生物,调节炎症通路.
- 在AD中注意到可溶性环氧化酶 (sEH) 失调,影响氧利平的代谢.
- 超过90%的氧利平在脂蛋白中循环,但它们在阿尔茨海默病中的作用尚不清楚.
研究的目的:
- 调查轻度认知障碍 (MCI) 和AD中与脂蛋白相关的氧利平因变化.
- 确定性别和ApoE基因型对这些脂质介质的影响.
- 探索脂蛋白介导的氧利平代谢与认知衰退之间的联系.
主要方法:
- 从对照组,MCI和AD参与者中分离出血低密度脂蛋白 (LDL) 和非常低密度脂蛋白 (VLDL).
- 使用液体染色学-并联质谱法 (LC-MS/MS) 量化化氧利平.
- 分析了代谢物与认知状态的关联,调整共变量并探索性别特异性差异.
主要成果:
- 与对照组相比,与脂蛋白相关的氧利平在MCI和AD患者中显著不同.
- 亲炎性二醇降低了女性的LDL,而亲溶解性环氧化物增加了女性的LDL和男性的LDL/VLDL,认知能力下降.
- 来自氧化酶/自氧化途径 (HODE,HOTE,HEPE) 的氧利平因在认知衰退时增加.
- ApoE基因型调节了这些变化,ApoE3/4载体呈现高氧化物,这表明抗炎性基因的降低.
结论:
- 在AD频谱 (MCI到AD) 中,脂蛋白相关氧利平的显著变化发生.
- 脂蛋白介导的氧利平失调是性别和ApoE特定的,涉及sEH和脂氧酶通路.
- 这些发现突显了炎症在阿尔茨海默病中的作用,并支持影响神经炎症的脂蛋白,可能有助于阿尔茨海默病生物标志物的发展.
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