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相关概念视频

Glucagon-like Receptor Agonists01:24

Glucagon-like Receptor Agonists

316
Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
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Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

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The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are...
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Oral Hypoglycemic Agents: Glinides01:06

Oral Hypoglycemic Agents: Glinides

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Repaglinide (Prandin) and Nateglinide (Starlix), known as glinides, are oral insulin secretagogues that stimulate insulin release from pancreatic β cells by closing the ATP-sensitive potassium channels (KATP channel). Repaglinide controls insulin release from pancreatic β cells by managing potassium efflux. It shares two binding sites with sulfonylureas and also has a unique site, indicating overlapping mechanisms of action. With a rapid onset and a 4-7 hour duration, it effectively...
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Insulin: The Receptor and Signaling Pathways01:28

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Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but...
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Insulin Secretory Vesicles01:05

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Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
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Hormones Regulating Blood Glucose01:16

Hormones Regulating Blood Glucose

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Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...
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Updated: Jun 24, 2025

Glucose Uptake Measurement and Response to Insulin Stimulation in In Vitro Cultured Human Primary Myotubes
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最近对葡萄糖敏感胰岛素的进展

Yun Liu1,2,3, Shiqi Wang1,3, Zejun Wang4

  • 1State Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.

Diabetes
|June 10, 2024
PubMed
概括
此摘要是机器生成的。

葡萄糖敏感胰岛素 (GRI) 通过根据葡萄糖水平自动调整胰岛素输送,为糖尿病管理提供了一个有前途的解决方案. 这项创新旨在改善血糖控制并最大限度地降低低血糖的风险.

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Last Updated: Jun 24, 2025

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科学领域:

  • 生物医学工程 生物医学工程
  • 内分泌学 在内分泌学.
  • 药物输送系统 药物输送系统

背景情况:

  • 胰岛素治疗对于1型和高级2型糖尿病至关重要,但由于治疗指数狭窄,因此面临挑战.
  • 葡萄糖外游对需要胰岛素的患者构成重大急性和慢性风险.
  • 对葡萄糖敏感胰岛素 (GRI) 的开发是改善糖尿病管理的长期目标.

研究的目的:

  • 审查葡萄糖敏感胰岛素 (GRI) 的历史发展和当前状况.
  • 探索各种对葡萄糖反应的成分及其与胰岛素输送系统的整合.
  • 讨论GRI输送载体和胰岛素类型的最新进展,以及未来的临床挑战.

主要方法:

  • 关于历史GRI发展的文献综述.
  • 对胰岛素输送控制的葡萄糖反应组件的分析.
  • 对GRI输送载体和胰岛素类型的最新进展的审查.

主要成果:

  • GRI系统整合了对葡萄糖敏感的元素来调节胰岛素的释放或激活.
  • 这些系统对葡萄糖水平做出反应,可能消除了对外部监测的需求.
  • 最近的进展包括新的输送载体和改进的胰岛素类似物,以增强GRI功能.

结论:

  • 葡萄糖敏感胰岛素 (GRI) 具有显著的潜力,可以改善血糖控制和降低糖尿病治疗中的低血糖.
  • 需要进一步的研究和开发,以克服GRI成功临床转化所面临的挑战.
  • 集成先进的材料和胰岛素类似物是实现GRI治疗的全部潜力的关键.