高脂肪饮食引起的肥胖会破坏肠道微生物群和粘液分泌,使实验性结肠炎恶化
Yue Wang1, Lin Zhao1, Sheng Huang1
1Animal Nutritional Genome and Germplasm Innovation Research Center, College of Animal Science and Technology, Hunan Agricultural University; Yuelushan Laboratory, Changsha, Hunan 410128, China.
高脂肪饮食通过破坏肠道屏障,损害杯细胞和改变肠道细菌,使肥胖小鼠的结肠炎恶化. 饮食改变可能有助于减少肥胖的炎症.
科学领域:
- 胃肠病学 胃肠病学
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
背景情况:
- 肥胖是一个全球性的健康问题,与各种疾病有关.
- 据怀疑高脂肪饮食 (HFD) 会导致肠道损伤.
- 肥胖对大肠炎,大杯细胞和肠道微生物群的影响尚未完全理解.
研究的目的:
- 为了研究HFD诱导的肥胖如何影响小鼠的硫酸 (DSS) 诱导的大肠炎.
- 在这个模型中探索杯细胞和肠道微生物群组成的作用.
主要方法:
- 在小鼠中使用HFD诱导肥胖.
- 在肥胖小鼠中使用DSS诱导大肠炎.
- 用HFD和DSS治疗的LS174T细胞的体外分析.
主要成果:
- 肥胖加剧了DSS诱导的大肠炎,增加了肠道屏障损伤.
- 观察到杯状细胞成熟的受损,粘液的产生减少,以及微生物群的破坏 (丰富的Escherichia-Shigella,Helicobacter).
- 在体外,HFD和DSS抑制了LS174T细胞中的粘液分泌和改变了氨基酸代谢.
结论:
- 由HFD引起的肥胖症通过破坏小杯细胞功能和肠道微生物平衡来加剧结肠炎的严重程度.
- 这些发现强调了饮食干预措施对于管理肥胖个体的肠道炎症的重要性.
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