由高脂肪饮食引起的改变肠道微生物群对小鼠的认知有不同的影响
Yinan Hua1, Cui Zhou1, Rong Fan1
1School of Public Health, Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China.
Nutrition research (New York, N.Y.)
|November 5, 2024
概括
富含和脂肪,n-6多不和和反式脂肪酸的高脂肪饮食通过改变肠道微生物群和损害海马体来损害认知能力. 欧米茄-3脂肪酸可能具有保护作用.
科学领域:
- 神经科学是一个神经科学.
- 微生物学 微生物学
- 营养科学 营养科学
背景情况:
- 人们对肠道微生物群在高脂肪饮食引起的认知衰退中的作用知之甚少.
- 饮食中的脂肪成分可能会通过肠-大脑轴影响大脑健康.
研究的目的:
- 通过改变肠道微生物群来调查高脂肪饮食是否会影响认知.
- 为了确定特定脂肪酸类型对认知功能和海马体结构的影响.
主要方法:
- 从各种高脂肪饮食的小鼠移植便微生物群到接受小鼠.
- 使用新型物体识别测试评估认知功能.
- 通过16S rRNA基因测序和海马体组织学分析肠道微生物群组成.
主要成果:
- 富含和,n-6多不和和反式脂肪酸的饮食导致认知障碍和海马神经元减少.
- 便微生物群移植复制了这些认知和神经元效应.
- 根据供体饮食,接受者小鼠之间的肠道微生物组组成显著不同.
结论:
- 富含某些脂肪的饮食通过改变肠道微生物群和损害海马体,对认知产生负面影响.
- 欧米茄-3多不和脂肪酸可能对饮食引起的认知障碍有保护作用.
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...