饮食衍生的循环抗氧化剂和炎症性肠病风险:孟德尔的随机化研究和元分析
Menglong Zou1, Qiaoli Liang2, Wei Zhang1
1Department of Gastroenterology, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China.
Frontiers in immunology
|March 7, 2024
概括
循环中的更高的视网醇水平显著降低了性结肠炎 (UC) 的风险,一种类型的炎症性肠病 (IBD). 这项门德尔随机化研究强调了视网醇作为潜在的保护因素,防止UC.
科学领域:
- 营养流行病学 营养流行病学
- 遗传流行病学遗传流行病学
- 胃肠病学 胃肠病学
背景情况:
- 关于循环抗氧化剂与炎症性肠病 (IBD) 风险之间的关联,存在相互矛盾的证据.
- 研究抗氧化剂和IBD之间的因果关系对于理解疾病的发病过程至关重要.
研究的目的:
- 使用孟德尔随机化 (MR) 调查循环抗氧化剂和炎症性肠病 (IBD) 之间的因果关系.
- 评估特定抗氧化剂,包括视网醇,对克罗恩氏病 (CD) 和性结肠炎 (UC) 风险的影响.
主要方法:
- 采用孟德尔随机化 (MR) 方法,用于循环抗氧化剂 (视网醇,亚斯酸盐,甘,β-胡卜素) 和代谢物的仪器变量.
- 分析了IIBDGC和FinnGen联盟对IBD,CD和UC的全基因组关联研究 (GWAS) 数据.
- 使用英国生物库数据进行了元分析和复制分析,以确认发现.
主要成果:
- 在绝对循环网膜醇水平和性结肠炎 (UC) 风险 (OR:0.28) 之间发现了显著的逆因果关系.
- 在英国生物库数据中的复制分析证实了视网醇与UC的保护性关联.
- 暗示性证据表明绝对视网醇水平与整体IBD风险 (OR:0.41) 之间存在负相关性.
结论:
- 绝对循环中的视网醇水平与患UC的风险降低密切相关.
- 需要使用扩展的仪器变量进行进一步的MR研究来证实这些发现.
- 雷丁醇可能在UC的发展中发挥保护作用.
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