卡科-2细胞吸收陶罗酸被促炎性细胞因子和丁酸盐抑制
Mafalda Couto1, Nelson Andrade2, Fernando Magro3
1Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.
Cytokine
|July 24, 2023
概括
炎症性肠病 (IBD) 涉及到胆汁盐的吸收受损. 这项研究表明,炎症性细胞因子和丁酸盐 (BT) 影响IBD中的胆酸吸收,这表明饮食,肠道细菌和疾病之间存在联系.
科学领域:
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 炎症性肠病 (IBD) 的特点是慢性胃肠炎症.
- 在IBD中减少胆汁盐的吸收增加了光胆汁酸,导致腹.
- 丁酸盐 (BT) 是一种纤维发酵产品,在IBD炎症的粘膜中受损.
研究的目的:
- 为了研究IBD和胆酸吸收之间的关系.
- 检查TNF-α,IFN-γ和BT对肠道细胞胆酸吸收的影响.
主要方法:
- 利用Caco-2细胞模型研究H-TC吸收.
- 评估了促炎性细胞因子 (TNF-α,IFN-γ) 和丁酸盐 (BT) 对胆酸运输的影响.
- 研究了PI3K和JAK/STAT1信号通路的参与.
主要成果:
- 通过PI3K和JAK/STAT1通路,TNF-α和IFN-γ抑制了Na+独立的H-TC吸收.
- 这些细胞因子上调ASBT表达,而不会增加Na+依赖的吸收.
- BT抑制了H-TC吸收,并与IFN-γ产生添加作用.
结论:
- 在IBD中存在丁酸盐 (BT) 和胆酸之间的相互作用.
- 这种相互作用可能与饮食,肠道微生物群和IBD的病理生理学有关.
相关概念视频
Drugs for Treatment of Ulcerative Colitis in IBD
175
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...
175
Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF
174
Tumor Necrosis Factor (TNF), a proinflammatory cytokine, contributes significantly to the inflammation seen in Crohn's disease. It exists as soluble TNF and membrane-bound TNF, with actions mediated through TNF receptors (TNFR). TNFR activation leads to the release of proinflammatory cytokines, T-cell activation, collagen production, and leukocyte migration, all contributing to inflammation in Crohn's disease. Anti-TNF monoclonal antibodies, namely infliximab (Remicade), adalimumab...
174
Drugs for Treatment of Constipation-Predominant IBS
213
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...
213
Gastritis-II: Pathophysiology
379
Gastritis is marked by disruption of the mucosal barrier that usually protects the stomach tissue from digestive juices and manifests in acute and chronic forms.
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
379
Inflammatory Bowel Disease IV: Pharmacological Management
154
Upon diagnosis, managing Inflammatory Bowel Disease (IBD) involves addressing several crucial aspects. The primary goals include resting the bowel, correcting malnutrition, and providing symptomatic relief. Resting the bowel may consist of medications to reduce inflammation and promote healing. Correcting malnutrition is essential, often requiring dietary adjustments and nutritional supplements. Symptomatic relief aims to ease pain, diarrhea, and other discomforts in IBD.
Pharmacologic...
Pharmacologic...
154
Drugs Affecting GI Tract Motility: Adsorbents as Antidiarrheal Agents
251
Diarrhea is characterized by the occurrence of frequent, watery bowel movements. Various factors can trigger diarrhea, including viral or bacterial infections, foodborne illnesses, side effects from certain medications, and underlying digestive disorders. If not adequately managed, diarrhea can lead to complications such as dehydration, electrolyte imbalances, and nutrient deficiencies. Severe diarrhea can lead to significant weight loss, malnutrition, and weakened immune function.
Adsorbents...
Adsorbents...
251


