饮食中的非粉多糖会降低对肠道线虫感染的免疫力
Angela H Valente1, Karen M R Jensen1, Laura J Myhill1
1Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark.
BMC biology
|June 14, 2023
概括
精制饮食中的西瓜通过改变免疫反应,意外地增加了小鼠对虫感染的敏感性. 这凸显了可发酵纤维如何损害肠道对肠道寄生虫的免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 营养科学 营养科学
- 微生物学 微生物学
背景情况:
- 饮食显著影响免疫功能和对肠道感染的抵抗力.
- 精制的饮食可以导致肠道失调和炎症,而植物营养素和纤维促进肠道健康.
- 紫花 (Cichorium intybus) 富含纤维和生物活性化合物,可能有益于肠道健康.
研究的目的:
- 调查半合成饮食中花补充剂对小鼠宿主免疫力对肠道虫感染的影响.
- 探索可发酵的非粉多糖在饮食诱导的对寄生虫免疫反应调节中的作用.
主要方法:
- 给小鼠食的是半合成饮食,并补充了西瓜或百花素.
- 分析了肠道微生物群的组成和对Heligmosomoides polygyrus和Trichuris muris感染的免疫反应 (类型1和类型2).
- 评估了与免疫反应相关的基因表达和细胞因子概况.
主要成果:
- 补充花的饮食增加了肠道微生物群的多样性,但减少了对H. polygyrus的2型免疫反应.
- 奇科里和点增加了T. muris负担,与偏斜的1型免疫环境相关.
- 补充素的饮食减少了IgE的产生和2型免疫基因表达,这种表达在IL-25治疗中被部分恢复.
结论:
- 精制饮食中可发酵的非粉多糖的含量增加会损害小鼠对虫感染的免疫力.
- 涉及可发酵纤维的饮食感染相互作用可能会对肠道免疫产生负面影响.
- 研究结果表明,可以使用新的策略来操纵肠道环境,以增强对肠道寄生虫的抵抗力.
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