基础科学和病原发生学
Tovia Jacobs1, Jaime Ramos Cejudo1, Mark He2
1NYU Grossman School of Medicine, New York, NY, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
血小板聚合升高与阿尔茨海默病 (AD) 病理标志物如p-tau181和神经退行标志物NfL在外周动脉疾病 (PAD) 患者中的增加有关. 需要进一步的研究,以在更大的队列中证实这些发现.
科学领域:
- 神经学 神经学
- 心血管医学 心血管医学
- 生物化学 生物化学
背景情况:
- 心血管风险因素对痴呆症有显著的贡献,但潜在的生物机制需要澄清.
- 血小板聚合升高是痴呆症的已知危险因素,在血管负担高的人群中,并发症复杂化.
- 血小板活动和心血管事件 (PACE) 研究调查了周围动脉疾病 (PAD) 患者的血小板活动和阿尔茨海默病 (AD) 生物标志物之间的联系.
研究的目的:
- 澄清将心血管风险因素与痴呆症联系起来的生物媒介.
- 检查PAD患者血小板聚合和AD生物标志物之间的关系.
- 调查血小板活动和AD病理和神经退行症标志物之间的潜在关联.
主要方法:
- 使用光传导聚合计 (LTA) 测量了血小板聚合.
- 使用SIMOA.181量化化 (p-tau181),总,神经丝光 (NfL) 和状纤维酸蛋白 (GFAP) 的血清度.
- 使用量子回归模型来评估关联,并对单变量,LASSO选择的共变量以及人口/治疗因素进行调整.
主要成果:
- 在101名PAD患者中,高血小板聚合 (与ADP和上腺素) 与增加的p-tau181和NfL水平相关.
- 在血小板聚合和总tau或GFAP水平之间没有发现显著的关联.
- 研究队伍的平均年龄为70岁,大多数是男性,患有多血管疾病,并接受血小板修饰治疗.
结论:
- 血小板聚合与没有痴呆症的PAD患者的AD病理 (p-tau181) 和神经退行症 (NfL) 标志物有关.
- 这些发现表明,血小板聚合在介导AD病理和神经炎症方面可能发挥作用.
- 需要进行更大的队列研究来验证这些关联并探索潜在的机制.
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