吉林大学学报(医学版)

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血浆脂质与非酒精性脂肪性肝病及肝酶之间因果关系的孟德尔随机化分析

刘志飞1,毕亚茹2,孙成林2,3,田肃岩1()   

  1. 1.吉林大学第一医院临床研究部,吉林 长春 130021
    2.吉林大学第一医院内分泌代谢科,吉林 长春 130021
    3.吉林大学第一医院临床营养科,吉林 长春 130021
  • 收稿日期:2025-01-04 接受日期:2025-04-25
  • 通讯作者: 田肃岩 E-mail:wmxt@jlu.edu.cn
  • 作者简介:刘志飞(1999-),男,江西省吉安市人,在读硕士研究生,主要从事流行病与卫生统计学方面的研究。
  • 基金资助:
    吉林省科技厅自然科学基金项目(YDZJ202201ZYTS121)

Mendelian randomization analysis on causal association between plasma lipids with nonalcoholic fatty liver disease and liver enzymes

Zhifei LIU1,Yaru BI2,Chenglin SUN2,3,Suyan TIAN1()   

  1. 1.Department of Clinical Research,First Hospital,Jilin University,Changchun 130021,China
    2.Department of Endocrinology and Metabolism,First Hospital,Jilin University,Changchun 130021,China
    3.Department of Clinical Nutrition,First Hospital,Jilin University,Changchun 130021,China
  • Received:2025-01-04 Accepted:2025-04-25
  • Contact: Suyan TIAN E-mail:wmxt@jlu.edu.cn

摘要:

目的 探究血浆脂质与非酒精性脂肪性肝病(NAFLD)和肝酶之间的因果关系,并阐明特定脂质分子对肝脏健康的潜在影响。 方法 采用双样本孟德尔随机化(MR)方法评估179种血浆脂质分子与NAFLD及4种肝酶[丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)和γ-谷氨酰转移酶(GGT)、碱性磷酸酶(ALP)]之间的因果关系。使用逆方差加权法作为主要分析方法,MR-Egger、加权中位数法、加权众数法和简单众数法作为补充分析。进行MR-Egger截距项检验、MR-PRESSO Global检验等敏感性分析方法保证分析结果的可靠性。使用多变量MR分析校正体质指数(BMI)对血浆脂质与NAFLD关联的潜在影响。 结果 磷脂酰胆碱(18:0/20:5)[比值比(OR)=0.988,95%置信区间(CI)(0.977,0.999),P=0.028]对NAFLD具有保护作用,而磷脂酰肌醇(16:0/18:2)[OR=1.016,95%CI(1.000,1.032),P=0.046]和磷脂酰肌醇(18:0/18:2)[OR=1.012,95%CI(1.002,1.022),P=0.021]会增加NAFLD发生风险。经BMI校正后,磷脂酰肌醇(18:0/18:2)[OR=1.019,95%CI(1.007,1.035),P=0.008]与NAFLD仍存在正向关联。磷脂酰胆碱(16:0/20:5)[效应值(β)=0.026,95%CI(0.015,0.036),P=9.93×10-7]、磷脂酰胆碱(O-16:0/22:5)[β=0.057,95%CI(0.035,0.078),P=1.79×10-7]、三酰甘油(56:7)[β=0.057,95%CI(0.035,0.079),P=2.53×10-7]和三酰甘油(56:8)[β=0.067,95%CI(0.047,0.087),P=1.19×10-10]的水平升高与ALT水平升高呈显著正相关关系。三酰甘油(53:2)[β=0.160,95%CI(0.123,0.197),P=1.55×10-17]与AST水平之间存在显著正向因果关联。 结论 特定血浆脂质分子与NAFLD发生风险和肝酶水平存在因果关联,且部分关联独立于BMI。

关键词: 血浆脂质, 非酒精性脂肪性肝病, 肝酶, 孟德尔随机化, 因果关联

Abstract:

Objective To investigate the potential causal associations of specific plasma lipids with nonalcoholic fatty liver disease (NAFLD) and liver enzymes, and elucidate the potential impact of specific plasma lipid on liver health. Methods Two-sample Mendelian randomization (MR) analyses were conducted to investigate potential causal relationships between 179 plasma lipids and both NAFLD and 4 liver enzymes: alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma-glutamyl transferase (GGT), and alkaline phosphatase (ALP). The inverse-variance weighted method served as the primary analysis approach, supplemented by MR-Egger, weighted median, weighted mode, and simple mode. Sensitivity analyses including MR-Egger intercept test and MR-PRESSO Global test were conducted to ensure the reliability of the results. Multivariable MR analysis was conducted to adjust for the potential effect of body mass index (BMI) on the association between plasma lipids and NAFLD. Results The analyses revealed that phosphatidylcholine (18:0/20:5) [odd ratio(OR)=0.988, 95% confidence interval(CI) (0.977, 0.999), P=0.028] exhibited a protective effect on NAFLD, while phosphatidylinositol (16:0/18:2) [OR=1.016, 95%CI(1.000, 1.032), P=0.046] and phosphatidylinositol (18:0/18:2) [OR=1.012, 95%CI (1.002, 1.022), P=0.021] increased NAFLD risk. After adjustment for BMI, the association between phosphatidylinositol (18:0/18:2) [OR=1.019, 95%CI (1.007, 1.035), P=0.008] and NAFLD remained significant. Elevated levels of phosphatidylcholine (16:0/20:5) [β=0.026, 95%CI(0.015, 0.036), P=9.93×10-7], phosphatidylcholine (O-16:0/22:5) [β=0.057, 95%CI(0.035,0.078), P=1.79×10-7], triacylglycerol (56:7) [β=0.057, 95%CI (0.035,0.079), P=2.53×10-7] and triacylglycerol (56:8) [β=0.067, 95%CI (0.047,0.087), P=1.19×10?1?] were significantly associated with increased ALT levels. Triacylglycerol (53:2) [β=0.160, 95% CI (0.123, 0.197), P=1.55×10-17] showed a significant positive causal association with AST levels. Conclusion Specific plasma lipids were causally associated with NAFLD risk and liver enzyme levels, with some associations independent of BMI.

Key words: Plasma lipidome, Liver enzymes, Nonalcoholic fatty liver disease, Mendelian randomization, Causal association

中图分类号: 

  • R575.5