打破障碍:由Akkermansia muciniphila降解肠是有益的还是有害的?
Anna M Tingler1, Melinda A Engevik1,2
1Department of Regenerative Medicine & Cell Biology, Medical University of South Carolina, Charleston, South Carolina, USA.
Infection and immunity
|August 11, 2025
概括
肠道细菌Akkermansia muciniphila可以通过降解粘膜并产生有益的代谢物来改善健康. 然而,过度降解可能会损害肠道屏障,增加疾病风险. 它的影响取决于上下文.
科学领域:
- 微生物学 微生物学
- 肠道微生物组研究研究
- 主体与微生物的相互作用
背景情况:
- * Akkermansia muciniphila * 是一种关键的粘素降解肠道细菌.
- 它在肠道健康和疾病中的作用是复杂的,并且取决于环境.
- 粘素降解产生有益的代谢物,但也可能损害肠道屏障.
研究的目的:
- 为了审查Akkermansia muciniphila*粘素降解的二元性质.
- 探索与其活动相关的利益和风险.
- 为其对肠道健康的影响提供一个平衡的视角.
主要方法:
- 对Akkermansia muciniphila和粘素降解的研究进行文献综述.
- 分析用糖酸和糖酸酶降解木氨酸的机制.
- 检查代谢物生产,包括SCFA和BCFA.
- 对*A. muciniphila*水平与各种疾病状态和宿主条件的相关性分析.
主要成果:
- *A. muciniphila*产生有益的代谢物 (SCFA,BCFA),支持宿主健康,并交叉食其他微生物.
- 增加*A. muciniphila*与改善肠道平衡有关,与肥胖,糖尿病和炎症相反相关.
- 过度的粘素降解可能会损害粘液屏障,增加对感染的易感性,并加剧像GVHD这样的疾病.
结论:
- *Akkermansia muciniphila*的影响取决于环境,提供了好处和风险.
- 了解其作用需要考虑宿主因素,饮食和整体肠道微生物群组成.
- 需要进一步的研究,以便对其治疗潜力和安全性有更深入的了解.
相关概念视频
Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors
571
Peptic ulcer disease, commonly called PUD, represents a multifaceted condition characterized by disruptions in the lining of the gastrointestinal (GI) tract. Central to the protection of the gastrointestinal lining is the mucosal-bicarbonate barrier. This physiological defense mechanism is a formidable shield against the corrosive effects of gastric acid and pepsin secretion in the stomach. Its role is pivotal in maintaining the structural integrity of the stomach's inner lining.
571
Bacterial Flora of the Large Intestine
643
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.
643
Mucosal Barrier of the Stomach
834
The gastric glands contain parietal cells that secrete hydrochloric acid (HCl) for digestion. The cells secrete HCl because it is highly corrosive and essential for breaking down food. To achieve this, they secrete hydrogen and chloride ions into the lumen of the gastric glands, which combine to form HCl.
Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
834


