茶中的多糖对小鼠肠道微生物群和生理健康指标的影响
Jiajia Yang1, Yulang Chi1, Qingyu Zhu1
1College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, 362000, China.
Scientific reports
|July 10, 2025
概括
茶叶多糖化物 (TPS) 对肠道微生物群产生积极影响,增加有益细菌并改善像葡萄糖水平这样的代谢健康指标. 这项研究证明了TPS.
科学领域:
- 微生物学 微生物学
- 营养科学 营养科学
- 生物化学 生物化学
背景情况:
- 茶叶多糖化物 (TPS) 是一种自然化合物,由于其生物活性,人们越来越感兴趣.
- 了解TPS对肠道微生物群和宿主生理学的影响对于其应用至关重要.
- 之前的研究表明潜在的健康益处,但机制需要进一步阐明.
研究的目的:
- 为了研究茶叶多糖化物 (TPS) 对小鼠肠道微生物群组成的影响.
- 评估TPS暴露对肝脏,肠道和血液参数的生理健康影响.
- 探索TPS管理后肠道微生物变化和代谢标志物之间的关系.
主要方法:
- 小鼠被分为控制 (CTRL),低剂量TPS (TPL) 和高剂量TPS (TPH) 组.
- 用测序技术分析了肠道微生物群的组成.
- 测量了生理健康指标,包括肝酶,肌酸激酶,粉酶和葡萄糖.
- 对肝脏和肠道进行了组织病理学分析.
- 使用相关性分析将微生物和代谢数据联系起来.
主要成果:
- TPS显著增加了有益的细菌 (Bacteroidota,Muribaculum) 和减少了有害的细菌 (Prevotella_copri,Desulfovibrionia).
- TPS降低了AST/ALT比率和肌酸激酶水平,表明炎症和肌肉损伤减少.
- 在TPH小鼠中血清氨酶和葡萄糖的升高表明葡萄糖代谢得到改善.
- 在TPL组中观察到明显的微生物群落集群 (β-多样性),而α多样性保持不变.
- 组织病理学证实,对肝脏或肠道组织没有任何不良影响.
- 在特定的肠道细菌 (例如,Bacteroides_H) 和代谢标志物 (例如,CO2,AMY) 之间发现了显著的相关性.
结论:
- 茶叶多糖 (TPS) 有效调节肠道微生物群的组成,有利于有益的细菌.
- TPS显示出增强代谢健康的潜力,其证据是改善葡萄糖代谢和减少炎症标志物.
- 没有观察到对肝脏或肠道完整性的不良影响,支持TPS的安全性.
- 由TPS引起的肠道微生物群变化与宿主代谢状态有显著的关联.
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