牛奶脂肪球膜通过调节微生物群-肠-大脑轴来改善慢性不可预测的轻度压力大鼠的抑郁类行为
Li Huang1, Yunqin Zheng1, Qianfeng Liu1
1Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
Bioscience of microbiota, food and health
|January 6, 2026
概括
牛奶脂肪球膜 (MFGM) 通过调节肠道微生物群和增加有益的代谢物来缓解老鼠的抑郁症类行为. 这表明MFGM.
科学领域:
- 神经科学是一个神经科学.
- 胃肠病学 胃肠病学
- 精神病学是一个精神病学.
背景情况:
- 肠-大脑轴在抑郁症的发病过程中起着至关重要的作用.
- 微生物群失衡与精神疾病有关.
- 牛奶脂肪球膜 (MFGM) 影响肠道健康和大脑功能.
研究的目的:
- 调查MFGM在改善由慢性不可预测轻度压力 (CUMS) 引起的类似抑郁症的行为方面的疗效.
- 阐明涉及肠道微生物群调节和代谢物生产的潜在机制.
主要方法:
- 接受CUMS治疗的老鼠被食MFGM饮食5周.
- 评估抑郁行为,神经递质,激素,肠道微生物群,短链脂肪酸 (SCFA) 和紧结蛋白 (occludin,ZO-1).
- 便微生物群移植 (FMT) 实验,以确认微生物转移效应.
主要成果:
- 在CUMS大鼠中,MFGM显著缓解了类似抑郁症的行为.
- 通过对奥克卢丁和ZO-1的表达进行上调,MFGM改善了肠道屏障的完整性.
- MFGM调节了神经递质水平 (增加了5-HT,DA,上腺素) 和降低了压力激素.
- 在接受MFGM治疗的老鼠中,SCFA和单胺神经递质通过FMT增加.
结论:
- 在老鼠抑郁症模型中,MFGM表现出类似抗抑郁药的效果.
- MFGM的好处与肠道微生物群的积极调节,增强的SCFA生产和正常化的神经递质水平有关.
- 通过向微生物群-肠-大脑轴,MFGM代表了抑郁症的潜在治疗或预防策略.
相关概念视频
01:18Dysbiosis of the Gut Microbiota
The human gut microbiome includes a diverse array of microbial species, including beneficial commensals and opportunistic pathogens, which interact to support host health. These microbes contribute to essential functions such as nutrient metabolism, immune system modulation, and maintenance of intestinal barrier integrity. However, disruptions to this equilibrium—referred to as dysbiosis—can have widespread physiological consequences.Dysbiosis is often characterized by reduced microbial...
01:22Gut-Brain Axis
The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such as...
01:21Microbiota Modulation by Antibiotics
Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...