分析肠道微生物群,代谢物和便秘之间的因果关系:孟德尔的随机化研究
Maolang He1, Shangqi Wang2, Jingyi Zhang2
1Department of Gastroenterology, The First Affiliated Hospital of Shihezi University, Shihezi, China.
Medicine
|September 24, 2025
概括
这项研究揭示了肠道微生物群 (GM) 和便秘之间的因果关系. 特定的肠道细菌和代谢物影响便秘的发展,提供新的诊断和治疗点.
科学领域:
- 胃肠道学和微生物学
- 研究肠道微生物组与人类健康之间的复杂相互作用.
- 专注于肠道微生物群在胃肠道疾病中的作用.
背景情况:
- 便秘是一种常见的疾病,有多因素的原因.
- 新出现的证据表明,肠道微生物群 (GM) 和其代谢物与便秘有关.
- 转基因,代谢物和便秘之间的确切因果关系需要进一步阐明.
研究的目的:
- 调查肠道微生物群组成,代谢物和便秘的发展之间的因果关系.
- 使用门德尔随机化 (MR) 来确定转基因,代谢物和便秘之间的因果关系.
- 为了确定特定的细菌种群和代谢物,因果影响便秘.
主要方法:
- 采用孟德尔的随机化 (MR) 分析,使用大规模的全基因组关联研究 (GWAS) 数据.
- 从欧洲人口的GWAS中获得的基因仪器用于转基因 (n=18,340),代谢物 (n=7824) 和便秘 (n=47,696).
- 进行了敏感性和反向MR分析,以确保稳定性并排除反向因果关系.
主要成果:
- 发现了便秘与里肯氏菌,虫菌,家族XIIIUCG001和Victivallison之间的积极因果关系.
- 在便秘和贝塔蛋白菌,甲基细菌,甲基细菌,Coprococcus2,Desulfovibrio,Eubacteriumbrachy群,Haemophilus,甲基细菌和Firmicutes之间发现了负因果相关性.
- 发现了13种转基因和代谢产物之间的24种显著因果关系,其中甲基细菌,甲基细菌和甲基细菌与特定代谢产物正相关.
结论:
- 在特定的肠道微生物群,其代谢物和便秘的发展之间建立了因果关系.
- 突出了已识别的细菌和代谢物在肠道屏障完整性,神经元信号传递和能量代谢中的关键作用.
- 提供了开发基于肠道微生物群调节的便秘新型诊断和治疗策略的基础.
相关概念视频
Drugs for Treatment of Constipation-Predominant IBS
726
Pharmacological therapies for IBS-C are designed to alleviate abdominal discomfort and enhance bowel function. In patients with IBS-C, fiber supplements may help soften stools and decrease straining, but may also lead to increased gas production and bloating. Osmotic laxatives like milk of magnesia are frequently used to soften stools and increase stool frequency in IBS-C patients. In addition, two drugs approved for use in severe IBS-C adult cases are linaclotide (Linzess) and lubiprostone...
726
Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists
900
Serotonin, a crucial neurotransmitter synthesized by enterochromaffin cells, plays a cardinal role in regulating gastrointestinal (GI) motility. With over 90% of the body's total serotonin in the GI tract, its influence on digestive processes is profound. Serotonin is swiftly released upon various stimuli, such as food boluses or certain drugs, triggering intrinsic sensory neurons in the myenteric plexus and extrinsic vagal and spinal sensory neurons. This leads to the activation of the...
900
Drugs Affecting GI Tract Motility: Other Laxatives
1.0K
Laxatives are primarily used to alleviate constipation, a common gastrointestinal disorder characterized by infrequent bowel movements and difficulty passing stools. They work by various mechanisms to increase the volume or frequency of bowel movements. The primary modes of action of laxatives include increasing stool bulk, softening the stool, stimulating intestinal motility, and osmotically drawing water into the intestines.
Osmotic or saline laxatives, like magnesium hydroxide or milk of...
Osmotic or saline laxatives, like magnesium hydroxide or milk of...
1.0K
Anatomy of the Intestines
86.8K
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...
86.8K
Drugs Affecting GI Tract Motility: Bulk-Forming and Stimulant Laxatives
530
Laxatives enhance bowel movements and alleviate constipation. They augment the stool's bulk, stimulate intestinal muscle contractions, draw water into the intestines, or soften the stool. There are five key types of laxatives: bulk laxatives, stimulant laxatives, osmotic laxatives, stool softeners, and lubricant laxatives.
Bulk-forming laxatives, such as psyllium, methylcellulose, and polycarbophil, absorb water in the intestine, increasing stool bulk and promoting bowel movement. This...
Bulk-forming laxatives, such as psyllium, methylcellulose, and polycarbophil, absorb water in the intestine, increasing stool bulk and promoting bowel movement. This...
530


