长期服用与相竞争的酸阻塞剂会导致大鼠的微生物群发生变化
Haythem Najah1, Rodrigo C L Edelmuth2,3, Maria Cristina Riascos2
1Division of Endocrine & Minimally Invasive Surgery, Department of Surgery, New York-Presbyterian Hospital, Weill Cornell Medical College, 525 East 68th Street, K-836, New York, NY, 10065, USA. han4006@med.cornell.edu.
Surgical endoscopy
|July 14, 2023
概括
诺普拉桑是一种新型的酸阻断剂,改变了大鼠肠道微生物群的组成. 这项研究揭示了细菌多样性和丰富性的显著变化,突出了该药物对肠道微生物群的影响.
科学领域:
- 微生物学 微生物学
- 药理学 药理学是指药理学的学科.
- 胃肠病学 胃肠病学
背景情况:
- 诺普拉桑是一种新的竞争性酸阻断剂 (P-CAB),具有快速和持久的酸抑制作用.
- 虽然vonoprazan-antibiotic疗法对肠道微生物群产生影响,但单独使用vonoprazan的效果尚不清楚.
研究的目的:
- 在大鼠模型中研究诺普拉桑单疗对肠道微生物群组成的影响.
- 为了确定短期或长期的诺普拉桑的使用是否会影响肠道微生物的多样性和丰富性.
主要方法:
- 一项为期12周的前性随机试验,涉及18只Wistar大鼠,分为三个组:对照组,12周的诺普拉赞和4周的诺普拉赞,然后再休息8周.
- 在基线和第12周对便样本进行基因组分序列测定,以分析肠道微生物群组成.
主要成果:
- 与对照组相比,vonoprazan的使用 (短期和长期) 导致Pielou的平衡指数较低.
- 在所有组中观察到β多样性的显著差异.
- 在属,属和家族水平上观察到相对细菌丰度的变化,包括Actinobacteria和Verrucomicrobia的减少,以及Bacteroidales,Prevotella和Lactobacillaceae的增加.
结论:
- 诺普拉桑单一疗法显著影响肠道微生物群的组成和细菌的相对丰度.
- 这项研究详细描述了诺普拉桑在各种分类层面上如何影响肠道微生物群.
相关概念视频
Acid Suppressive Drugs for Peptic Ulcer Disease: Proton Pump Inhibitors
472
Peptic ulcers, often induced by H. pylori infections or NSAID usage, arise from disruptions in the delicate balance of gastric acid production. Peptic ulcers stem from heightened gastric acid levels due to H. pylori infections or NSAID use. The protective mucus layer diminishes in the presence of these factors, allowing gastric acid to erode the stomach lining and form ulcers.
Gastric acid, a potent cocktail of hydrogen and chloride ions, is produced in specialized parietal cells within the...
Gastric acid, a potent cocktail of hydrogen and chloride ions, is produced in specialized parietal cells within the...
472
Acid Suppressive Drugs for Peptic Ulcer Disease: Antacids
404
In the complex environment of the gastric lumen, excessive acid secretion can lead to the formation or worsening of ulcers within the delicate mucosal layer. Antacids, such as sodium bicarbonate and calcium carbonate, provide relief by neutralizing this acid, transforming it into harmless salt and water. This neutralization process raises the gastric pH from a highly acidic level of 1 to a more basic 3-4, reducing the acidity within the stomach.
However, this neutralization reaction between...
However, this neutralization reaction between...
404
Antihypertensive Drugs: Potassium-Sparing Diuretics
648
Liddle syndrome is a genetically inherited form of hypertension characterized by the overactivity of epithelial sodium channels in the nephron, the functional unit of the kidney. This heightened activity leads to increased sodium reabsorption and excessive excretion of potassium. To counteract this, potassium-sparing diuretics such as amiloride are used. They function by blocking these sodium channels, thereby reducing the influx of sodium into the epithelial cells and minimizing the loss of...
648
Renal Drug Excretion: Effect of Urine pH, Flow Rate, and Drug pKa
206
The pH of urine, the drug's pKa, and the urine flow rate are vital parameters for drug reabsorption and excretion. Urinary pH varies between 4.6 and 8.0 and is influenced by diet, drug intake, and the patient's pathophysiology. It affects a drug's ionization state and reabsorption. For instance, carbohydrate-rich food produces alkaline urine promoting drug excretion, while proteins and certain medications like ascorbic acid lead to acidic urine enhancing reabsorption.
The pKa of a...
The pKa of a...
206
Stomach pH Regulation
6.1K
The human body carefully regulates the internal pH of different organs to maintain homeostasis. For example, while the blood plasma maintains a neutral pH of 7, the stomach lumen has an acidic pH of 1.5 - 3.5. The low pH of stomach lumen helps kill pathogens in the food and break down complex food molecules.
The acid-secreting gastric mucosal epithelial cells (parietal cells) lining the stomach lumen maintain the low pH in the lumen. Numerous ion transporters and channels on these parietal...
The acid-secreting gastric mucosal epithelial cells (parietal cells) lining the stomach lumen maintain the low pH in the lumen. Numerous ion transporters and channels on these parietal...
6.1K
Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors
468
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.
468


