乳酸菌酸奶通过多个途径和调节肠-大脑轴来缓解CUMS小鼠的焦虑和抑郁等影响
Chunyang Zheng1, Song Wei1, Fulei Liu2,3
1School of Pharmacy, Qingdao University, Qingdao, People's Republic of China.
Nutritional neuroscience
|December 2, 2025
概括
有 Lactobacillus reuteri 和 Lactobacillus bulgaricus 的益生菌酸奶可以缓解小鼠的焦虑和抑郁. 这些发酵乳制品可能通过微生物群-肠-大脑轴提供神经保护.
科学领域:
- 微生物学 微生物学
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
背景情况:
- 微生物群-肠-大脑轴影响认知和情绪,特别是在精神疾病中.
- 益生菌发酵乳制品可能调节肠道微生物群并减少抑郁症状,但机制尚不清楚.
研究的目的:
- 为了研究 Lactobacillus reuteri 和 Lactobacillus bulgaricus 发酵酸奶对老鼠慢性不可预测轻度压力 (CUMS) 诱导的焦虑和抑郁的作用.
- 探索涉及微生物群-肠-大脑轴的潜在神经保护机制.
主要方法:
- 小鼠接受了CUMS,以诱导焦虑和抑郁类行为.
- 通过行为测试来评估L. reuteri和L. bulgaricus发酵酸奶的影响.
- 分析了神经保护作用和分子机制,包括神经递质水平,炎症性细胞因子和关键信号通路 (NF-κB,CREB-BDNF).
主要成果:
- 无论是L. reuteri还是L. bulgaricus发酵酸奶都显著缓解了CUMS引起的焦虑和抑郁症状.
- 发酵酸奶在海马体中表现出神经保护作用,并维持正常的大脑活动.
- 治疗通过抑制NF-κB和激活CREB-BDNF通路来调节单胺神经递质和炎症性细胞因子.
结论:
- L. reuteri和L. bulgaricus发酵酸奶显示,通过微生物群-肠-大脑轴,有可能改善小鼠的抑郁行为.
- 这些发现表明,使用针对肠道微生物群的发酵乳制品来治疗抑郁症是一个有希望的治疗途径.
- 这项研究强调了发酵乳制品中特定益生菌菌株的神经保护和抗抑郁作用的潜力.
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