剖析肠道微生物群失衡,炎症性细胞因子和大脑中的结构连接之间的因果关系:孟德尔的随机化研究
Qianling Guo1,2,3, Dongli Yang2, Aamir Fahira2
1The Affiliated Dongguan Songshan Lake Central Hospital, Guangdong Medical University, Dongguan, Guangdong, China.
Brain and behavior
|October 30, 2025
概括
这项研究揭示了肠道细菌和大脑结构之间的因果关系,由炎症介导. 这些发现提升了对肠-大脑轴的理解,并可能为神经疾病提供新的点.
科学领域:
- 神经科学是一个神经科学.
- 微生物学 微生物学
- 遗传学 遗传学 是一个
背景情况:
- 肠道微生物群的组成越来越多地与大脑的结构连接有关.
- 微生物群-肠-大脑轴内的双向关系需要进一步阐明.
- 炎症性细胞因子可能在这些相互作用中发挥中介作用.
研究的目的:
- 调查肠道微生物群和大脑结构连接之间的因果关系.
- 为了检查炎症性细胞因子在肠-大脑轴中的调解作用.
- 为了深入了解肠道微生物与大脑之间复杂的双向通信.
主要方法:
- 使用双向双样本的孟德尔随机化 (MR) 对肠道微生物群的GWAS数据 (18,340名参与者) 和脑连接的MRI数据 (82,382名参与者).
- 分析了211种肠道类别和206种大脑连接特征之间的因果关系.
- 进行了41种炎症性细胞因子的调解分析,并进行了敏感性分析,包括反向MR,以确保强度.
主要成果:
- 在邦费罗尼校正后,确定了11个显著的肠道微生物群和大脑连接对 (6个正数,5个负数关联).
- 通过反向MR检测确认了9对对的阳性关联.
- 没有证据表明横向性,异质性或反向因果关系;炎症性细胞因子通过特定途径调解了10%至30%的关系.
结论:
- 在特定的肠道微生物群和大脑结构连接之间建立了潜在的因果关系.
- 进步了对微生物群-肠-大脑轴的理解.
- 突出了涉及肠道微生物群调节的神经系统疾病的潜在治疗点.
相关概念视频
Anatomy of the Intestines
86.6K
Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
86.6K
Irritable Bowel Syndrome I: Introduction
905
Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
905


