Related Experiment Video
Updated: Oct 5, 2025
08:41
Assessment of Vascular Tone Responsiveness using Isolated Mesenteric Arteries with a Focus on Modulation by Perivascular Adipose Tissues
Published on: June 3, 2019
10.0K
Relationships between advanced glycation end products (AGEs), vasoactive substances, and vascular function
Takayuki Matsumoto1, Kumiko Taguchi1, Tsuneo Kobayashi1
1Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
Summary
Advanced glycation end products (AGEs) impact vascular smooth muscle cells (VSMCs) and endothelial cells (ECs), altering vascular responsiveness. This study investigates how AGEs modify vascular reactivity to vasoactive agents, crucial for understanding vascular diseases.
Area of Science:
- Vascular biology and pathophysiology
- Endocrinology and metabolic diseases
Background:
- Vascular smooth muscle cells (VSMCs) and endothelial cells (ECs) are critical for vascular function; their dysfunction contributes to vasculopathies.
- Abnormal vascular responsiveness to vasoactive substances is a hallmark of diseases like diabetes, hypertension, and atherosclerosis.
- Endothelium-derived factors regulate vascular tone, and their dysregulation is implicated in various pathological conditions.
Purpose of the Study:
- To investigate the link between advanced glycation end products (AGEs) and the function of ECs and VSMCs.
- To elucidate the modulative effects of AGEs on vascular reactivity to vasoactive substances.
Main Methods:
- The study focuses on the cellular and molecular mechanisms by which AGEs affect vascular cells.
- Investigates the impact of AGEs on vascular responsiveness to vasoconstrictors and vasodilators.
Main Results:
- Advanced glycation end products (AGEs) are implicated in vascular dysfunction.
- AGEs may alter the signaling pathways in VSMCs and ECs, affecting vascular tone.
- Evidence suggests AGEs modulate vascular reactivity to vasoactive agents.
Conclusions:
- AGEs play a significant role in vascular dysfunction observed in metabolic and cardiovascular diseases.
- Understanding AGEs' effects on ECs and VSMCs is crucial for developing therapeutic strategies for vasculopathies.
Related Concept Videos
01:24Regulation of Angiogenesis and Blood Supply
2.8K
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...
2.8K
01:16Vascular Spasm
2.2K
The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
2.2K
01:17Autoregulation of Blood Flow
3.5K
Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
3.5K
01:10Mechanism of Angiogenesis
6.0K
Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
6.0K
01:20Overview of the Vascular System
3.1K
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...
3.1K
01:20Vascular Resistance
6.5K
Vascular resistance is a critical concept in understanding blood flow dynamics in the circulatory system. It refers to the resistance that blood encounters as it flows through the blood vessels. This resistance is a key factor in determining blood pressure and cardiac workload.
The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
6.5K