Arteriolar Endothelium
Arteriolar Endothelium - Related Videos
02:38
Analysis of Calcium Dynamics and Membrane Potential Changes in a Mouse Arteriolar Endothelium
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2025
Source: Hakim, M. A. et al., Isolation and Functional Analysis of Arteriolar Endothelium of Mouse Brain Parenchyma. J. Vis. Exp. (2022).This video demonstrates the functional analysis of an arteriolar endothelial tube isolated from a mouse brain. It outlines the steps for measuring intracellular calcium levels and membrane potential, both at baseline and in response to pharmacological stimulation.
06:40
Isolation and Functional Analysis of Arteriolar Endothelium of Mouse Brain Parenchyma
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Cited by 2 •
2022
Intensive preparation of intact mouse cerebral endothelial "tubes" from cerebral parenchymal arterioles is illustrated for studying cerebral blood flow regulation. Further, we demonstrate the experimental strengths of this endothelial study model for fluorescence imaging and electrophysiology measurement of key cellular signaling pathways, including changes in intracellular [Ca2+] and membrane potential.
11:18
Real-time Imaging of Heterotypic Platelet-neutrophil Interactions on the Activated Endothelium During Vascular Inflammation and Thrombus Formation in Live Mice
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Cited by 29 •
2013
Here we report an experimental technique of fluorescence intravital microscopy to visualize heterotypic platelet-neutrophil interactions on the activated endothelium during vascular inflammation and thrombus formation in live mice. This microscopic technology will be valuable to study the molecular mechanism of vascular disease and to test pharmacologic agents under pathophysiological conditions.
06:20
Imaging Leukocyte Adhesion to the Vascular Endothelium at High Intraluminal Pressure
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Cited by 22 •
2011
This is a method to visualise leukocyte adhesion to the endothelium in harvested pressurised vessels. The technique enables studying vascular adhesion under shear flow with differing intraluminal pressures up to 200 mmHg thus mimic-ing the pathophysiological conditions of high blood pressure.
05:53
Intraluminal Drug Delivery to the Mouse Arteriovenous Fistula Endothelium
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Cited by 5 •
2016
After puncturing the aorta through the inferior vena cava (IVC) to create an aorto-caval fistula in the mouse, solution containing a drug is infused into the IVC via the same needle, followed by incubation. This method enables more robust drug delivery to the venous endothelium compared to the external route.
FAQs
These mediators provide opposing influences on smooth muscle tone. Nitric oxide and prostacyclin contribute to changes that alter vessel relaxation or constriction, whereas endothelin acts as a vascular signal affecting tone in the opposite direction. Their coordinated release allows arteriolar endothelium to adjust vessel diameter in response to physiological demands and thereby influence local blood flow.
Pressure and shear stress serve as physical signals that indicate changing conditions within the vessel. Arteriolar endothelial cells respond to these inputs by modifying the release of vasoactive mediators, including nitric oxide, prostacyclin, and endothelin. This response links mechanical forces to smooth muscle tone, helping regulate blood flow and maintain vascular homeostasis.
Its regulatory role extends beyond control of vessel diameter. Arteriolar endothelium helps control how readily substances pass across the vessel wall and how the lining interacts with circulating blood cells. These functions influence the local vascular environment and connect blood-flow regulation with processes relevant to inflammation and the maintenance of vascular homeostasis.
Changes in endothelial mediator release can alter smooth muscle tone and therefore influence the amount of blood reaching downstream tissue. By adjusting local perfusion, the arteriolar endothelium helps match circulation with tissue requirements and supports oxygen delivery. Disruption of this signaling can consequently affect the relationship between vascular regulation and tissue supply.
A focused investigation should consider pressure, shear stress, and chemical signals as key inputs, then examine changes in mediator release and smooth muscle tone. Researchers can also evaluate permeability and interactions with circulating blood cells. Together, these observations reveal how the vascular interface responds and how those responses may affect perfusion and homeostasis.
Its functions provide a biological link between endothelial signaling and disorders involving blood-flow regulation. Studying this tissue helps researchers investigate hypertension, diabetes, atherosclerosis, and microvascular dysfunction through changes in vascular tone, permeability, blood-cell interactions, and tissue perfusion. The same framework also supports analysis of how impaired vascular homeostasis may affect oxygen delivery.