埃皮米多糖因抑制氧化应激和调节自而改善性结肠炎
Linxian Zhao1,2, Tao Jiang3, Yuxin Zhang4
1Department of Gastrointestinal, Colorectal, and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, China.
埃皮米多糖 (EPS) 通过减少炎症和氧化应激,有效治疗性结肠炎 (UC). 它还促进了自,这表明EPS是UC的潜在治疗方法.
科学领域:
- 药理学 药理学是指药理学的学科.
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
背景情况:
- 由Epimedium brevicornum衍生出的Epimedium多糖 (EPS) 是一种具有潜在治疗应用的生物活性化合物.
- 性结肠炎 (UC) 是一种慢性炎症性肠病,需要有效的治疗策略.
研究的目的:
- 研究Epimedium多糖 (EPS) 对硫酸 (DSS) 诱导的性结肠炎 (UC) 的保护作用.
- 阐明涉及EPS治疗作用的潜在分子机制,包括炎症,氧化应激和自途径.
主要方法:
- 使用德克斯硫酸盐 (DSS) 诱导的UC小鼠模型和Caco-2细胞系.
- 进行了组织病理学分析 (H&E,AB-PAS染色),西部涂抹,免疫组织化学和转录组分析.
- 研究的关键信号通路包括Toll样受体4/核因子-κB (TLR4/NF-κB),Kelch样ECH关联蛋白1/核因子红色素衍生的2-like2 (Keap1/Nrf2) 和腺单酸盐依赖蛋白激酶/哺乳动物目标的拉巴胺素 (AMPK/mTOR).
主要成果:
- EPS治疗显著改善了UC症状和组织病理损伤,改善了结肠粘膜的完整性.
- EPS抑制了TLR4/NF-κB通路,通过Keap1/Nrf2调节减少了氧化应激,并通过AMPK/mTOR通路促进了自.
- 保护作用依赖于Nrf2,如在Nrf2-淘汰赛小鼠中所示;EPS在LPS治疗的Caco-2细胞中调节了Nrf2的表达.
结论:
- 中介聚糖 (EPS) 显示出对DSS诱导的UC具有显著的保护作用.
- 治疗机制包括抑制TLR4/NF-κB信号传递,调节Keap1/Nrf2通路,并通过AMPK/mTOR促进自.
- 作为性结肠炎治疗的潜在治疗剂,EPS具有前途.
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