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基于孟德尔随机化探讨二甲双胍与肌少症相关特征的关联
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朱 岳 ,鞠营辉,杨玉莹,王梦琳,吴 睿 [中国科学技术大学附属第一医院离子医学中心(合肥离子医学
中心),合肥 230088]
中图分类号 R977.1+5;R969.3 文献标志码 A 文章编号 1001-0408(2024)22-2793-06
DOI 10.6039/j.issn.1001-0408.2024.22.16
摘 要 目的 探讨二甲双胍与肌少症相关特征的关联。方法 基于公开的全基因组关联研究相关数据库,利用与二甲双胍使用
强相关的单核苷酸多态性位点作为工具变量,采用两样本孟德尔随机化(MR)分析方法[包括逆方差加权(IVW)法、MR-Egger回
归法和加权中位数法]研究二甲双胍与肌少症3种相关特征(低握力、肌肉质量、步行速度)的关联。分别采用Cochran’s Q检验评
估异质性、MR-Egger截距检验检测多效性、留一法进行敏感性分析。结果 IVW法分析结果显示,二甲双胍的使用可能与低握力
风险增加(β=1.550,95%CI为0.389~2.711,P=0.009)和四肢肌肉质量减少(右腿瘦体重:β=-0.665,95%CI为-1.018~-0.312,
P<0.001;左腿瘦体重:β=-0.710,95%CI 为-1.049~-0.371,P<0.001;右臂瘦体重:β=-0.471,95%CI 为-0.890~-0.053,
P=0.027;左臂瘦体重:β=-0.463,95%CI为-0.865~-0.061,P=0.024)存在显著关联,但与步行速度无关。其他2种方法的结
果或因果效应方向与之一致。Cochran’s Q检验提示本研究结果存在一定异质性;MR-Egger截距检验未发现水平多效性;敏感性
分析提示本研究结果具有稳健性。结论 二甲双胍可能增加肌少症的风险。
关键词 孟德尔随机化;二甲双胍;肌少症;低握力;肌肉质量;关联分析
Investigation of the relationship between metformin and sarcopenia-related traits based on Mendelian
randomization
ZHU Yue,JU Yinghui,YANG Yuying,WANG Menglin,WU Rui[Ion Medical Center of the First Affiliated
Hospital of University of Science and Technology of China (Hefei Ion Medical Center), Hefei 230088, China]
ABSTRACT OBJECTIVE To investigate the relationship between metformin and sarcopenia-related traits. METHODS Based on
the data from publicly genome-wide association study-related databases, using single nucleotide polymorphisms strongly associated
with metformin as instrumental variables, the two-sample Mendelian randomization (MR) analysis methods [inverse variance
weighting (IVW) method, MR-Egger regression method and weighted median estimator method] were employed to investigate the
relationship between metformin and three sarcopenia-related traits (low grip strength, muscle mass and walking speed). Cochran’s
Q test was used to assess heterogeneity, MR-Egger intercept test was used to detect horizontal pleiotropy, and leave-one-out
analysis was performed for sensitivity analysis. RESULTS The results of IVW method showed that metformin use was significantly
associated with an increased risk of low grip strength (β=1.550, 95%CI was 0.389-2.711, P=0.009) and reduced limb muscle
mass (right leg lean body mass: β =-0.665, 95%CI was -1.018--0.312, P<0.001; left leg lean body mass: β =-0.710,
95%CI was -1.049--0.371,P<0.001; right arm lean body mass: β=-0.471, 95%CI was -0.890--0.053, P=0.027; left arm
lean body mass: β=-0.463, 95%CI was -0.865--0.061, P=0.024),but was not associated with walking speed. The results or
causal effects of the other two methods are consistent with it. The Cochran’s Q test indicated some degree of heterogeneity in the
result of this study. No horizontal pleiotropy was detected by the MR-Egger intercept test. The sensitivity analysis suggested that the
results of this study were stable. CONCLUSIONS Metformin may increase the risk of sarcopenia.
KEYWORDS Mendelian randomization; metformin; sarcopenia; low grip strength; muscle mass; relationship analysis
肌少症是一种与年龄有关的老年综合征,其特点是 件,包括跌倒、功能丧失、身体虚弱,甚至死亡 。据报
[2]
肌肉质量减少、肌肉力量下降、身体机能减弱,几乎所有 道,肌少症是全球老年人虚弱和残疾的主要原因;60~
老年人都受到该病的影响 。肌少症会引发许多不良事 70 岁人群的肌少症患病率为 6%~22%,而 80 岁以上人
[1]
*第一作者 主管药师,硕士。研究方向:临床药理学。E-mail: 群的患病率高达50% 。尽管肌少症的病因尚不完全清
[3]
zywnmc@163.com
楚,但其潜在的分子机制可能涉及内在因素(如炎症、线
# 通信作者 副主任药师,硕士。研究方向:临床药理学。电话:
0551-65613921。E-mail:yckwurui@163.com 粒体功能障碍、氧化应激)和外部因素(如摄入热量减少
中国药房 2024年第35卷第22期 China Pharmacy 2024 Vol. 35 No. 22 · 2793 ·