相关实验视频
Updated: Jun 30, 2025
08:58
Optimized Analysis of In Vivo and In Vitro Hepatic Steatosis
Published on: March 11, 2017
16.0K
ангиотензин II 在非酒精性肥胖症发展中的作用
Zimri Aziel Alvarado-Ojeda1, Celeste Trejo-Moreno1, Eduardo Ferat-Osorio2
1Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca Morelos, Mexico.
Archives of medical research
|March 16, 2024
概括
ангиотензин II (ANGII) 通过促进肝细胞中的脂质积累,有助于脂肪肝疾病. 这篇综述探讨了ANGII在发展肥胖症的机制,这是肝病进展的关键阶段.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 内分泌学 在内分泌学.
- 心血管研究研究心血管研究
背景情况:
- 脂肪肝疾病涉及肝脏脂质积累 (脂肪),胰岛素耐药性,氧化应激和炎症.
- 它逐渐发展为脂肪肝炎,肝硬化和肝癌,构成重大公共卫生挑战.
- 肥胖,2型糖尿病和脂质失调是常见的危险因素,但血管活性激素如血管新生素II (ANGII) 越来越多地涉及.
研究的目的:
- 审查目前关于血管素II (ANGII) 诱导肝细胞中脂质积累的机制的文献.
- 阐明ANGII在促进有利于稳定性,有利于炎症和有利于氧化系统环境中的作用.
主要方法:
- 关于ANGII和脂肪肝疾病的现有报告的文献综述.
- 对研究 ANGII 对肝细胞脂质代谢的影响的分析.
- 综合证据,将ANGII与内皮功能障碍,高血压和代谢障碍联系起来.
主要成果:
- 安吉促进内皮功能障碍和高血压.
- 有证据表明,ANGII有助于脂肪组织的增加和全身的炎症前驱状态.
- 焦虑与血脂水平升高和亲静态环境有关.
结论:
- ANGII在脂肪肝疾病的发展中发挥着重要作用,超出了其已知的心血管影响.
- 了解 ANGII 在肝细胞脂质积累中的机制,对于开发向疗法至关重要.
- 需要进一步的研究来充分阐明ANGII在代谢性肝病中的复杂作用.
相关概念视频
01:30Antihypertensive Drugs: Angiotensin II Receptor Blockers
726
In the renin-angiotensin-aldosterone system, a hormone called angiotensin II plays a crucial role. It binds to the AT1 receptors in vascular smooth muscles coupled with Gq proteins. The activation of these receptors activates an enzyme called phospholipase C, which releases two molecules: inositol trisphosphate and diacylglycerol. These molecules cause a chain reaction that leads to the phosphorylation of myosin light chains and promotes interaction between actin and myosin, leading to smooth...
726
01:25Antihypertensive Drugs: Direct Renin Inhibitors
621
The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...
621
01:30Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors
631
Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...
631
01:24Regulation of Angiogenesis and Blood Supply
2.6K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.6K
01:17Gastritis-II: Pathophysiology
324
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...
324
01:26Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
428
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
428