Vascular Clamp Application
Vascular Clamp Application - Related Videos
09:05
Application of Automated Image-guided Patch Clamp for the Study of Neurons in Brain Slices
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Cited by 11 •
2017
This protocol describes how to conduct automatic image-guided patch-clamp experiments using a system recently developed for standard in vitro electrophysiology equipment.
06:42
Application of a NMDA Receptor Conductance in Rat Midbrain Dopaminergic Neurons Using the Dynamic Clamp Technique
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Cited by 5 •
2010
In this video, we demonstrate how to apply a conductance into a dopaminergic neuron recorded in the whole cell configuration in rat brain slices. This technique is called the dynamic clamp.
09:43
Patch Clamp Electrophysiology
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2023
Neuron cell membranes are populated with ion channels that control the movement of charge into and out of the cell, thereby regulating neuron firing. One extremely useful technique for investigating the biophysical properties of these channels is called patch clamp recording. In this method, neuroscientists place a polished glass micropipette against a cell and apply suction to form a high resistance seal. This process isolates a small “patch” of membrane that contains one or more ion channels.
07:30
In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling
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Cited by 6 •
2015
This protocol replicates physiological or pathological blood flow in vitro to aid in determining cell response in disease pathologies. By introducing a pressure damping chamber downstream of a blood pump, blood flow across the vasculature can be recapitulated and imposed on a monolayer of vascular endothelium or a mimetic co-culture.
11:10
Visualization of Vascular and Parenchymal Regeneration after 70% Partial Hepatectomy in Normal Mice
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Cited by 3 •
2016
Tools used for visualizing vascular regeneration require methods for contrasting the vascular trees. This film demonstrated a delicate injection technique used to achieve optimal contrasting of the vascular trees and illustrate the potential benefits resulting from a detailed analysis of the resulting specimen using µCT and histological serial sections.
FAQs
Clamp force determines whether compression produces partial or complete occlusion, so it directly affects the amount of blood reaching downstream tissue. Duration adds a second control: prolonged restriction can limit oxygen delivery, while excessive pressure may injure the endothelium, the vessel’s inner lining. Matching force and time to the experimental or procedural goal helps preserve interpretable vascular responses.
Vessel size affects how compression is applied, while tissue integrity indicates how well the wall may tolerate pressure. These factors must be considered alongside force and duration because unsuitable compression can harm the endothelium or reduce downstream oxygen delivery more than intended. Assessing them supports controlled occlusion and helps protect the vascular segment under study.
Temporary isolation of a vascular segment creates a defined local condition for observing circulation or addressing a repair site. At the same time, the operator can maintain a clearer field or regulate perfusion rather than allowing unrestricted flow. This makes the clamp useful when the experimental question depends on separating local vascular events from surrounding blood flow.
Begin by considering the vessel’s size and tissue integrity, then select a placement that supports the intended degree of flow control. The applied force and duration should remain consistent with the goal, whether partial regulation or stronger occlusion. Monitoring these conditions helps avoid endothelial damage and excessive restriction of downstream oxygen delivery.
In biology, this approach can create controlled conditions for studying circulation, ischemia and reperfusion, vascular repair, and hemostasis. Restricting flow for a defined purpose allows investigators to examine what happens when perfusion changes or when a vascular segment is isolated. Its value lies in linking the imposed flow condition to vascular responses.
By temporarily restricting flow and then allowing the vascular condition to change, the technique provides a way to examine ischemia and reperfusion as related phases. The key experimental considerations are the degree of occlusion and its duration, because both influence downstream oxygen delivery. Consistent application helps researchers compare vascular responses across conditions.