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乳酸通过调节调节性T细胞和肠道微生物群来缓解牛奶过敏
Ruofan Xie1,2,3, Yan Liu1,2,3, Xin Liu1,2,3
1State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, P.R. China.
Journal of agricultural and food chemistry
|December 8, 2025
概括
乳酸通过调节免疫反应和肠道微生物群来预防和治疗牛奶过敏 (CMA) 是有前途的. 在暴露于过敏原之前的早期管理产生了最显著的抗过敏作用.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 儿科过敏 儿科过敏
背景情况:
- 牛奶过敏 (CMA) 是儿童早期普遍且日益严重的健康问题.
- 乳酸是一种短链脂肪酸前体,对CMA具有潜在的治疗益处.
研究的目的:
- 在牛奶过敏小鼠模型中研究乳酸的抗过敏活性.
- 探索乳酸施用时间对免疫反应和肠道微生物群组成的影响.
主要方法:
- 建立β-乳糖球蛋白诱导的食物过敏小鼠模型.
- 在不同时间点 (敏感化前后) 给药乳酸.
- 评估免疫球蛋白水平 (IgE,IgG1),T辅助细胞分化 (Th2,Treg),细胞因子生产 (IL-4) 和肠道微生物群组成.
主要成果:
- 在敏感化前 (LA-Pre) 服用的乳酸显著降低了IgE,IgG1和IL-4水平,抑制了Th2分化,并促进了调节性T细胞分化.
- 在敏感化后 (LA-Post) 服用乳酸仅降低了IgE和IL-4水平.
- LA-Pre组显示肠道微生物群的显著调节,包括Firmicutes,Bacteroidetes和Lactobacilli.
结论:
- 乳酸对牛奶过敏具有显著的抗过敏活性.
- 早期服用乳酸在预防和治疗CMA方面更有效.
- 乳酸影响免疫反应和肠道微生物群,为CMA管理提供了一个新的策略.
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