关于丁酸盐在 Clostridioides difficile 病变发生过程中的作用的新兴观点
Horia A Dobrila1,2,3, Andrew J Hryckowian1,2
1Department of Medicine, Division of Gastroenterology and Hepatology, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA.
Infection and immunity
|September 24, 2025
概括
困难菌感染 (CDI) 是一个主要的健康威胁. 本综述探讨了肠道微生物共代谢物丁酸盐如何防止C. difficile的生长和发病,并提供了新的治疗策略.
科学领域:
- 微生物学 微生物学
- 肠道微生物组研究研究
- 传染性疾病 传染性疾病
背景情况:
- 困难杆菌感染 (CDI) 构成了严重的公共卫生威胁,每年在美国造成大量感染,死亡和高医疗费用.
- 目前的抗生素和微生物组恢复疗法 (MRT) 等治疗方法存在局限性,包括抗生素耐药性和关于长期可持续性和可访问性的问题.
- 被破坏的肠道微生物群 (失生症) 是CDI的主要危险因素,强调需要了解宿主微生物相互作用以更好地开发治疗方法.
研究的目的:
- 审查当前关于丁酸盐在Clostridioides difficile感染 (CDI) 背景下的作用的文献.
- 找出关于丁酸盐如何影响C. difficile生长,新陈代谢,毒素产生和分泌的知识差距.
- 讨论针对丁酸盐开发新型策略以缓解风险人群中CDI的潜力.
主要方法:
- 关于丁酸盐和C. difficile的现有研究的文献综述.
- 分析丁酸盐对C. difficile的适应性,病变发生和环境相互作用的影响.
- 综合发现,以突出未来CDI缓解策略的影响.
主要成果:
- 丁酸盐是受到食纤维影响的关键辅代谢物,将健康与不良的肠道生态系统区分开来.
- 新出现的证据表明,丁酸盐对C. difficile的适应性和病原性至关重要.
- 富含酸盐的环境似乎排除了C. difficile,影响了其生长,新陈代谢,毒素释放和分泌.
结论:
- 了解丁酸盐,肠道微生物群和C. difficile之间的复杂关系对于开发精确的CDI干预措施至关重要.
- 进一步研究丁酸盐对C. difficile多方面的影响,可以为创新的治疗策略铺平道路.
- 向酸盐生产或信号通路可能为预防和治疗易受伤害的个体的CDI提供了一个有希望的途径.
相关概念视频
01:21Drugs for Treatment of Constipation-Predominant IBS
664
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...
664
01:17Irritable Bowel Syndrome I: Introduction
879
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...
879
01:29Drugs for Treatment of Ulcerative Colitis in IBD
413
Ulcerative colitis is a chronic inflammatory condition primarily affecting the colon and rectum. The primary drugs used in the treatment of ulcerative colitis are aminosalicylates. They exhibit anti-inflammatory and immunosuppressive properties. They modulate inflammatory mediators and inhibit the activity of nuclear factor κB (NF-κB). Aminosalicylates also reduce inflammation by inhibiting prostaglandin and leukotriene production and decreasing neutrophil chemotaxis and superoxide...
413
01:29Bacterial Flora of the Large Intestine
1.5K
The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
1.5K
01:23Cystic Fibrosis: Pathogenesis
674
Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
674
01:30Inflammatory Bowel Disease II: Crohn's Disease
909
Introduction
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...
909