蒸的Polygonatum sibiricum中的多糖类通过保护肠道粘膜屏障和调节肠道微生物群来改善性结肠炎
Haoran Li1, Yi Wu1, Qiao Zhou2
1College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China.
一种来自蒸的Polygonatum sibiricum的新型多糖,PSSP-EF,有效地治疗小鼠的性结肠炎. 它平衡肠道微生物群,保护肠道屏障,并增强有益的短链脂肪酸.
科学领域:
- 自然产品化学 自然产品化学
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
背景情况:
- 传统上Polygonatum sibiricum是用于胃肠道健康的.
- 性结肠炎 (UC) 是一种慢性炎症性肠病,治疗选择有限.
- 需要针对肠道微生物群和肠道屏障功能的新型治疗剂来治疗UC.
研究的目的:
- 从蒸的Polygonatum sibiricum中分离和表征一种新型多糖体 (PSSP-EF).
- 评估PSSP-EF在性结肠炎小鼠模型中的治疗潜力.
- 阐明PSSP-EF在UC中的有效性背后的机制.
主要方法:
- 使用热水提取,乙醇沉和染色学提取和净化PSSP-EF.
- PSSP-EF的结构特征,包括分子量和单糖组成.
- 在小鼠模型中评估PSSP-EF对UC症状,结肠炎症,肠道屏障标记物,肠道微生物群和短链脂肪酸的影响.
主要成果:
- 隔离和鉴定了具有分子量为2.24 × 10^4 Da的多糖化物PSSP-EF.
- PSSP-EF显著缓解了UC症状,减少了结肠炎症 (降低了TNF-α,IL-1β,IL-6),并修复了肠道粘膜屏障 (增加了Occludin,ZO-1,Claudin-1).
- PSSP-EF调节了肠道微生物群的组成,增加了有益细菌 (Muribaculaeae) 和增强了短链脂肪酸生产 (酸,酸,黄油酸).
结论:
- PSSP-EF在小鼠中显示出针对性结肠炎的显著治疗效果.
- 这些机制包括恢复肠道微生物平衡,保护肠道屏障,促进短链脂肪酸合成.
- 作为治疗性结肠炎的功能性食品成分,PSSP-EF具有前景.
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