脂质在痴呆中的因果作用:一项孟德尔随机研究。

IF 2.8 Q2 NEUROSCIENCES
Journal of Alzheimer's disease reports Pub Date : 2025-01-13 eCollection Date: 2025-01-01 DOI:10.1177/25424823241312106
Boyang Su, Zhengqing He, Li Mao, Xusheng Huang
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引用次数: 0

摘要

背景:越来越多的证据表明,脂质代谢异常是痴呆的发病机制之一。有必要揭示脂质与痴呆之间的关系。目的:本研究采用双向双样本孟德尔随机化方法,探讨179种脂质与痴呆风险之间的因果关系。方法:我们评估了179种脂质和4种痴呆亚型的因果效应,包括阿尔茨海默病(AD)、血管性痴呆(VaD)、额颞叶痴呆(FTD)和路易体痴呆(DLB)。采用方差反加权、MR-Egger法、加权中位数、简单模式和加权模式分析血脂与痴呆的关系。采用Cochran’s Q、MR-Egger截距检验和MR-PRESSO检验结果的异质性和多效性。此外,我们进行了反向磁共振分析,测试痴呆对血脂的因果影响。结果:我们的研究揭示了甘油磷脂、甘油脂和甾醇对痴呆风险的因果关系。磷脂酰胆碱、磷脂酰肌醇和甘油三酯在AD中起重要作用。值得注意的是,磷脂酰胆碱在FTD和DLB中都起保护作用。然而,本研究未观察到磷脂酰肌醇对FTD的显著影响。在VaD病例中,不仅甘油磷脂有影响,甘油脂也有影响,固醇也是一个危险因素。结论:我们的研究提供了新的证据,支持遗传预测脂质在痴呆中的因果作用。未来的临床试验有必要评估脂质水平在预防痴呆中的潜在作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The causal role of lipids in dementia: A Mendelian randomization study.

Background: Increasing evidence suggests that abnormal lipid metabolism is one of the pathogeneses of dementia. It is necessary to reveal the relationship between lipids and dementia.

Objective: This study used bidirectional two-sample Mendelian randomization to explore the causal relationship between 179 lipid species and the risk of dementia.

Methods: We assessed the causal effects of 179 lipid species and four subtypes of dementia including Alzheimer's disease (AD), vascular dementia (VaD), frontotemporal dementia (FTD), and dementia with Lewy bodies (DLB). Inverse variance weighting, MR-Egger method, weighted median, simple mode, and weighted mode were used to analyze the relationship between lipids and dementia. Cochran's Q, MR-Egger intercept test, and MR-PRESSO test were used to test the heterogeneity and pleiotropy of the results. In addition, we performed an inverse MR analysis testing the causal effects of dementia on lipids.

Results: Our study revealed causal effects of glycerophospholipid, glycerolipid, and sterol on the risk of dementia. Phosphatidylcholine, phosphatidylinositol, and triglycerides play significant roles in AD. Notably, phosphatidylcholine played a protective role in both FTD and DLB. However, this study did not observe a significant effect of phosphatidylinositol on FTD. In the case of VaD, not only glycerophospholipid, but also glycerolipid, exerted an influence, but sterol was also a risk factor.

Conclusions: Our study provided new evidence supporting the causal role of genetically predicted lipid species in dementia. Future clinical trials are necessary to evaluate the potential role of lipid levels in dementia prevention.

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