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相关概念视频

Regulation of the Cardiovascular System01:27

Regulation of the Cardiovascular System

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The regulation of the cardiovascular system allows the body to adapt to various demands and maintain homeostasis.
The regulation of the cardiovascular system involves the autonomic nervous system (ANS), baroreceptors, and chemoreceptors, ensuring that heart rate and blood pressure are appropriately modulated in response to varying physiological demands.
The ANS comprises two main divisions: the sympathetic and parasympathetic nervous systems. The sympathetic nervous system enhances...
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Glucagon-like Receptor Agonists01:24

Glucagon-like Receptor Agonists

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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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GPCRs Regulate Adenylyl Cylase Activity01:09

GPCRs Regulate Adenylyl Cylase Activity

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Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of...
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Overview of the Vascular System01:20

Overview of the Vascular System

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The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
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G-Protein Gated Ion Channels01:21

G-Protein Gated Ion Channels

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GPCRs are primarily responsible for our sense of smell, taste, and vision.  The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory...
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Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

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Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
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Mechanisms Underlying Gut Hormone Secretion Using the Isolated Perfused Rat Small Intestine
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GLP-1和心血管系统的作用

Florian Kahles1, Andreas L Birkenfeld2,3,4,5, Nikolaus Marx1

  • 1Department of Internal Medicine I, University Hospital Aachen, RWTH Aachen, Aachen, Germany.

The Journal of clinical investigation
|February 16, 2026
PubMed
概括

类似葡萄糖-1受体激动剂 (GLP-1RAs) 改善高风险患者的心血管结果. 口服GLP-1RA和双GIP/GLP-1激动剂为控制糖尿病和心血管风险提供了进一步的治疗进展.

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Mixed Primary Cultures of Murine Small Intestine Intended for the Study of Gut Hormone Secretion and Live Cell Imaging of Enteroendocrine Cells
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科学领域:

  • 内分泌学和新陈代谢学
  • 心血管疾病研究研究
  • 药理学 药理学 是一个学科.

背景情况:

  • 类似葡萄糖的-1 (GLP-1) 是一种调节葡萄糖代谢的关键激素.
  • GLP-1受体 (GLP-1R) 通路激活是2型糖尿病的治疗点.
  • 基于因克雷丁的疗法包括双基化酶4 (DPP-4) 抑制剂和GLP-1受体激活剂 (GLP-1RAs).

研究的目的:

  • 审查GLP-1和GLP-1RAs对心血管的影响.
  • 总结关于心血管疾病或高心血管风险患者GLP-1RAs的临床数据.
  • 讨论基于隐形素的治疗方法的进展,包括口服配方和双重激动剂.

主要方法:

  • 对GLP-1,GLP-1RAs和心血管结果现有文献的综述.
  • 从涉及DPP-4抑制剂和GLP-1RAs的大规模心血管结果试验 (CVOTs) 的数据分析.
  • 对双重GLP-1R/GIPR激动剂蒂尔泽帕提德 (tirzepatide) 的临床试验结果的审查.

主要成果:

  • DPP-4 抑制剂显示心血管安全性,但没有减少心血管事件.
  • 几种GLP-1RAs (liraglutide,semaglutide,dulaglutide) 在CVOTs中显著降低了心血管结果.
  • 口服GLP-1RA和双GIP/GLP-1激动剂代表了新的治疗策略,在降低HbA1c和减肥方面具有更高的疗效.

结论:

  • 在高风险人群中,GLP-1RA具有有利的心血管特征,并减少心血管事件.
  • 包括口服GLP-1RAs和双重激动剂在内的基于英克雷丁的疗法的进步,提供了改善的血糖控制和体重管理.
  • 持续的CVOT对于评估新药 (如蒂尔泽帕提德) 的长期心血管影响至关重要.