文章标题:Sarcopenia-related features and psoriasis: A two-sample Mendelian randomization study
中文标题:肠道微生物群、代谢物和肌肉减少症之间的因果关系:一项孟德尔随机化研究
发表期刊:J Gerontol A Biol Sci Med Sci .
发表时间:2024年9月
影响因子:4.3/Q1
肠道菌群失衡和肌肉减少症经常在老年人中观察到。肠道微生物群及其代谢物被认为是导致肌肉减少症风险增加的危险因素,但这些关联是否是因果关系尚不清楚。
研究方法
我们进行了连锁不平衡评分回归和 2 样本孟德尔随机化 (MR) 方法,以来自大规模全基因组关联研究的单核苷酸多态性作为工具变量,以检查将肠道微生物群与其代谢物与肌肉减少症联系起来的因果关系。在 MR 分析之后,进行了后续的敏感性分析,以加强所获结果的稳健性和可信度。
数据源和研究参与者
我们选择了迄今为止最全面的肠道微生物群遗传数据,这些数据来自 MiBioGen 联盟。肠道微生物群的数据集来自总共 18 340 名参与者,包括欧洲、西班牙裔和亚洲血统等。
结果分析
1. 遗传预测的肠道微生物群对肌肉减少症的因果估计
根据 MR 分析,我们发现卟啉单胞菌科(比值比 [OR] = 1.047,95% 置信区间 [CI] = 1.005–1.090,p = 2.70E-02,IVW)、Rikenellaceae 科(OR = 0.984,95% CI = 0.970–0.998,p = 3.01E-02,IVW)、Terrisporobacter 属(OR = 1.019,95% CI = 1.001–1.038,p = 4.35E-02,IVW)和 Victivallis 属(OR = 1.011,95% CI = 1.000– 1.022,p = 4.48E-02, IVW) 与 WP 有因果关系。对于 ALM,我们发现了类拟杆菌属(OR = 1.042,95% CI = 1.005–1.079,p = 2.37E-02,IVW),科 XIII(OR = 1.058,95% CI = 1.023–1.095,p = 1.16E-03,IVW),丹毒科 UCG003 属(OR = 0.914,95% CI = 0.878–0.952,p = 1.71E-05,IVW),产共生菌属组(OR = 1.032,95% CI = 1.003–1.061,p = 2.99E-02,IVW),戈登杆菌属 (OR = 1.020,95% CI = 1.001–1.040,p = 3.67E-02,IVW),毛螺菌属NC2004组(OR = 1.042,95% CI = 1.015–1.069,p = 2.22E-03,IVW),示雪螺体属(OR = 0.960,95% CI = 0.929–0.991,p = 1.29E-02,IVW),细菌属(OR = 0.960,95% CI = 0.931–0.989,p = 7.59E-03,IVW),瘤胃球菌属2(OR = 0.975,95% CI = 0.953–0.997,p = 2.86E-02,IVW),顺序 拟杆菌门 (OR = 1.042, 95% CI = 1.005–1.079, p = 2.37E-02, IVW)、厚壁菌门 (OR = 1.035, 95% CI = 1.001–1.070, p = 4.37E-02, IVW) 和扁形菌门 (OR = 0.983, 95% CI = 0.967–0.999, p = 3.74E-02, IVW) 与它有因果关系。
2. 遗传预测的肠道微生物群衍生代谢物对肌肉减少症的因果估计
在 MR 分析之后,我们发现肌酸(OR = 0.952,95% CI = 0.911–0.995,p = 2.76E-02,IVW)、苯甲酸盐(OR = 1.098,95% CI = 1.004–1.201,p = 4.00E-02,IVW)、肉碱(OR = 0.924,95% CI = 0.867–0.985,p = 1.55E-02,IVW)、苹果酸盐(OR = 0.935,95% CI = 0.877–0.996,p = 3.80E-02,IVW)、甘露醇(OR = 0.982,95% CI = 0.965–1.000,p = 4.41E-02,IVW), 反式-4-羟脯氨酸 (OR = 1.113,95% CI = 1.039–1.192,p = 2.39E-03,IVW) 与 WP 有因果关系。对于 ALM,我们发现乙酰肉碱(OR = 0.437,95% CI = 0.229–0.834,p = 1.20E-02,IVW)、肌酸(OR = 1.369,95% CI = 1.024–1.832,p = 3.42E-02,IVW)、甘氨酸(OR = 1.243,95% CI = 1.057–1.460,p = 8.35E-03,IVW)、酮球星(OR = 0.788,95% CI = 0.640–0.970,p = 2.49E-02,IVW)、赖氨酸(OR = 0.677,95% CI = 0.504–0.909,p = 9.54E-03,IVW), 脯氨酸(OR = 1.112,95% CI = 1.020–1.213,p = 1.65E-02,IVW),4-羟基马尿酸酯(OR = 1.070,95% CI = 1.023–1.119,p = 2.95E-03,IVW),甜菜碱(OR = 0.739,95% CI = 0.568–0.960,p = 2.37E-02,IVW),脱氧胆酸盐(OR = 0.930,95% CI = 0.885–0.977,p = 3.75E-03,IVW),糖脱氧胆酸盐(OR = 0.974,95% CI = 0.951–0.998,p = 3.19E-02,IVW),马尿酸盐(OR = 0.925,95% CI = 0.866–0.989, p = 2.22E-02,IVW)、猪去氧胆酸盐 (OR = 1.023,95% CI = 1.000–1.046,p = 4.55E-02,IVW)、苯乙酰谷氨酰胺 (OR = 0.938,95% CI = 0.887–0.992,p = 2.63E-02,IVW) 和水苏碱 (OR = 1.051,95% CI = 1.008–1.097,p = 2.04E-02,IVW) 与它有因果关系。
文章小结
利用 2 样本 MR 方法,我们的研究阐明了肠道微生物群、肠道微生物群衍生代谢物和肌肉减少症发生之间的因果相互作用。这些发现表明,肠道微生物群和代谢物可能代表了肌肉减少症的潜在潜在危险因素,并有望成为新的治疗重点。如果您对生信分析和公共数据库挖掘感兴趣,但时间和精力有限或者缺乏相关经验,小骨非常乐意为您提供如下服务:免费思路评估、付费方案设计和生信分析等,有意向的老师欢迎联系小骨哦!