一项孟德尔的随机化研究,研究了1400种血清代谢物与自身免疫性疾病之间的因果关系
Siyuan Song1, Qiling Zhang1, Jiangyi Yu1
1Department of Endocrinology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
Heliyon
|August 8, 2024
概括
这项研究使用了门德尔的随机化来将血清代谢物与自身免疫性疾病联系起来. 特定的代谢物被确定为多发性硬化症和1型糖尿病的潜在预测因素,为疾病管理提供了洞察力.
科学领域:
- 代谢学 代谢学 代谢学
- 免疫学 免疫学 免疫学
- 遗传学 遗传学 是一个
背景情况:
- 自身免疫性疾病 (ADs),如肌痛性硬化症 (MG),多发性硬化症 (MS),系统性红斑狼 (SLE),1型糖尿病 (T1DM) 和性结肠炎 (UC) 构成重大健康挑战.
- 了解血清代谢物 (SMs) 和ADs之间的因果关系对于开发有针对性的干预措施至关重要.
研究的目的:
- 使用孟德尔随机化 (MR) 调查1400个SM和五个主要AD之间的潜在因果关系.
- 为了确定可以作为这些自身免疫性疾病的生物标志物或治疗点的特定的SM.
主要方法:
- 利用IEU OpenGWAS项目对ADs和GWAS总结统计数据对1400个SMs的数据进行了MR分析.
- 采用逆方差加权 (IVW),MR-Egger,加权中位数 (WME) 和简单中位数 (SME) 方法来评估因果关系.
- 使用F统计学评估仪器变量的稳定性,通过Cochran的Q测试和留出一个分析的异质性,以及使用MR-Egger回归和MR-PRESSO进行水平变性.
主要成果:
- 高水平的5-甲基尤里丁 (利博胺) 和2'-脱氧尤里丁与增加的MS风险有关 (FDR校正的P<0.001).
- 较低的S-adenosylhomocysteine (SAH) 与5-methyluridine (ribothymidine) 的比率与减少的MS风险相关 (FDR-P = 0.007).
- 较高水平的1,2-迪利诺醇-GPE (18:2/18:2) 显示出对T1DM的保护作用 (FDR-P = 0.003).
- 对于MG,SLE或UC没有发现显著的SM-AD因果关系.
结论:
- 5-甲基尤里丁 (ribothymidine),2'-deoxyuridine,SAH与5-甲基尤里丁的比率,以及1,2-dilinoleoyl-GPE (18:2/18:2) 分别可以作为MS和T1DM的预测生物标志物.
- 在MG,SLE和UC中没有发现的SM-AD链接,这表明有不同的病因路径.
- 这些发现对自身免疫性疾病的个性化预防和治疗策略具有临床意义.
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