在低密度脂蛋白胆固醇和低密度脂蛋白大小之间不一致的风险评估
Nicholas E Larkey1, Leslie J Donato2, Allan S Jaffe2,3
1Department of Pathology, University of Virginia, Charlottesville, VA, United States.
The journal of applied laboratory medicine
|July 3, 2025
概括
核磁共振光谱 (NMR) 显示,低密度脂蛋白胆固醇 (LDL-C) 和LDL颗粒大小 (LDL-s) 的测量通常是不一致的. 这种不一致影响了冠状动脉疾病 (CAD) 风险评估,因为LDL的表型与CAD诊断没有一致的相关性.
科学领域:
- 心血管诊断心血管诊断
- 脂质代谢研究 研究脂质代谢研究
- 生物标志物的分析分析.
背景情况:
- 低密度脂蛋白胆固醇 (LDL-C) 是冠状动脉疾病 (CAD) 风险的一个关键指标.
- 小密度的LDL颗粒 (≤20.5nm) 与增加的CAD风险有关.
- 核磁共振 (NMR) 谱学可以测量LDL-C,LDL粒子 (LDL-P) 度和LDL大小 (LDL-s).
研究的目的:
- 研究通过NMR获得的LDL-C,LDL-P和LDL-s测量之间的关联.
- 在评估CAD风险时评估这些NMR衍生的脂质参数之间的一致性.
- 为了确定LDL-s表型是否影响CAD风险分层,当与LDL-C水平不一致时.
主要方法:
- 分析了使用NMR光谱学进行常规临床测试的血清样本 (n=26,710).
- 使用斯皮尔曼分析对相关的LDL-P,LDL-C和LDL-s进行分析.
- 将脂质风险分类与已确定的值和冠状动脉血管学结果进行比较,结果为一组患者 (n=356).
主要成果:
- 在LDL-C和LDL-P (ρ=0.87) 之间观察到高相关性,在LDL-s (ρ=0.51) 之间观察到中度相关性,在LDL-P和LDL-s (ρ=0.21) 之间观察到最弱相关性.
- 对LDL-P/LDL-C,LDL-s/LDL-P和LDL-C/LDL-s的一致高风险值分别发生在99.8%,43%和25%的病例中.
- 与高风险的LDL-C但非小密度的LDL-s相比,患有一致的高风险LDL-C和小密度LDL-s的患者的CAD诊断率相似.
结论:
- 测量LDL大小 (LDL-s) 和LDL胆固醇 (LDL-C) 测量经常显示在标准临床风险切线处存在差异.
- 当LDL-C水平独立评估时,LDL大小的表型似乎不是CAD诊断的一致预测因素.
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