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脂蛋白 (a) 脂质组:在两个随机对照养试验中对减少饮食和脂肪摄入量的反应

Munkhtuya Myagmarsuren¹, Hayley G Law¹, Wei Zhang¹

¹Department of Internal Medicine, University of California-Davis, Davis, CA 95616, USA.

|October 16, 2025

概括

通过饮食减少和脂肪会增加脂蛋白[Lp[a]水平,并改变其脂质组成,特别是三糖. 这凸显了Lp(a) 的动态性质及其对心血管疾病风险的潜在影响.

科学领域:

心血管疾病研究研究
营养科学营养科学
脂质代谢脂质代谢是什么

背景情况:

升高的脂蛋白 (Lp) 是一种由基因决定的心血管疾病风险因素.
Lp (a) 含有氧化脂 (OxPL),这有助于其有氧性特性.
随着饮食和脂肪 (SFA) 的减少,Lp (a) 水平增加,但饮食对Lp (a) 风险特性的影响不明.

研究的目的:

研究饮食和脂肪 (SFA) 减少对Lp(a) 风险性质的影响,特别是Lp(a) 氧化脂 (OxPL) 和脂质组成.
为了评估Lp(a) -OxPL度和亚种丰度的变化,以应对SFA减少.
为了分析Lp(a) 脂质组的变化,以应对饮食干预措施.

主要方法:

两项多中心,随机,受控,交叉养试验 (DELTA 1和DELTA 2) 涉及健康和代谢挑战的个体.
评估总的Lp(a) -OxPL,Lp(a) -OxPL亚种,以及Lp(a) 脂管组.
饮食干预措施的比较,包括减少SFA和用碳水化合物取代.

主要成果:

在DELTA 1中没有观察到总Lp(a) -OxPL或主要OxPL亚种的显著差异;然而,当SFA被碳水化合物取代时,在DELTA 2中ALDOPC下降.
不针对性的脂质组分析显示,在440种注释的脂质物种中,有87种在饮食之间存在显著差异.
在这两项试验中,碳原子和双键数量较高的三糖类物种显示出最明显的增加与SFA减少.

结论:

血Lp (a) 度增加,伴随着对Lp (a) 脂质组成的显著变化,以应对饮食干预.
这项研究表明了个体内Lp (a) 脂质组成的动态性质.
饮食干预显著改变了Lp(a的脂质特征,这表明其心血管风险的可修改方面.

关键词:

(一) 一个 (一) 一个 (一) 一个在Lp (a) -lipidomics中使用.饮食饮食饮食饮食有氧化脂类的酸盐.风险属性风险属性风险属性

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