番尼基硫酸盐补充剂改变了肠道微生物群和胆酸代谢
Xiaojia He1, Kristine K Dennis1, Zachery R Jarrell1
1Division of Pulmonary, Allergy and Critical Care, and Sleep Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA.
Toxicology and applied pharmacology
|September 13, 2025
概括
高剂量的瓦纳基硫酸盐补充剂,类似于人类使用,改变肠道细菌和代谢物. 这项研究发现,在长期暴露后,小鼠的胆汁酸和炎症途径发生变化.
科学领域:
- 微生物学 微生物学
- 代谢学 代谢学 代谢学
- 毒理学 毒理学 毒理学
背景情况:
- (V) 每天在低水平 (<10微克/体重) 消耗.
- 瓦纳基硫酸盐 (V+4) 补充剂用于抗糖尿病作用,剂量高达200μg/kgBW/天.
- 长期高剂量V+4对肠道微生物组和代谢组的影响尚不清楚.
研究的目的:
- 测试长期摄入高剂量的补充瓦纳基硫酸盐是否会改变小鼠的肠道微生物组和代谢组.
- 为了研究菌微生物和代谢组中依赖瓦纳基硫酸盐的变化.
主要方法:
- 给C57BL/6J雌性小鼠 (4周大) 给V+4 (0.02,0.2,2 mg/L) 或对照水6个月.
- 使用16S rRNA微生物组测序和LC-HRMS分析了内含量.
- 使用了生物统计学,生物信息学和途径丰富分析.
主要成果:
- 瓦纳基硫酸盐暴露改变了胆酸代谢,减少了胆酸,氧/脱氧和石灰酸.
- 炎症途径受到影响,包括酸和酸代谢.
- 综合分析揭示了具有炎症相关代谢物和与胆酸代谢相关的微生物的独特社区.
结论:
- 长期高剂量甲基硫酸盐暴露,在与人体补充剂使用相当的水平上,显著改变了肠道微生物组合.
- 关键的代谢通路,特别是胆酸和炎症通路,因长期V+4暴露而失调.
- 这些发现凸显了补充剂对肠道健康的潜在影响.
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