Venous Intimal Hyperplasia
Venous Intimal Hyperplasia - Related Videos
04:33
Carotid Artery and Jugular Vein Interposition: A Technique to Induce Venous Intimal Hyperplasia in Rabbit Model
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2025
This video demonstrates the interposition of the rabbit carotid artery with the jugular vein to induce venous intimal hyperplasia by subjecting the veins to arterial pressure. This model will help investigate molecular and genetic interventions to attenuate the progression of intimal hyperplasia after revascularization surgeries.
07:02
A Rabbit Venous Interposition Model Mimicking Revascularization Surgery using Vein Grafts to Assess Intimal Hyperplasia under Arterial Blood Pressure
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Cited by 3 •
2020
The present protocol aims to experimentally create venous intimal hyperplasia by subjecting veins to arterial blood pressure for developing strategies to attenuate venous intimal hyperplasia following revascularization surgery using vein grafts.
08:34
Inducing Myointimal Hyperplasia Versus Atherosclerosis in Mice: An Introduction of Two Valid Models
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Cited by 8 •
2014
This video shows two models of intimal plaque development in murine arteries and emphasizes the differences in myointimal hyperplasia and atherosclerosis.
01:26
Cellular Adaptation III: Hyperplasia
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2026
Hyperplasia is an increase in the number of cells in a tissue or organ due to enhanced cell division. It is an adaptive, controlled response to stimuli such as injury, hormones, or stress, involving mitosis to produce genetically identical cells and support tissue repair and regeneration.Tissue CapacityCertain tissues, including the epidermis, intestinal epithelium, bone marrow, and fibroblasts, have a high potential for hyperplasia. Others, such as bone, cartilage, and smooth muscle, show...
08:14
Central Venous Catheter Insertion: Subclavian Vein
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2023
Source: James W Bonz, MD, Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA Central venous access is necessary in a multitude of clinical situations for hemodynamic monitoring, medication delivery, and blood sampling. There are three veins in the body that are accessed for central venous cannulation: the internal jugular, the subclavian, and the femoral vein. Central venous access via the subclavian vein has several advantages over other possible locations. The subclavian...
FAQs
Endothelial injury or altered blood-flow forces can initiate a sequence that promotes venous intimal hyperplasia by activating inflammation and changing the behavior of cells in the vessel wall. These upstream conditions connect local vascular stress or damage with cellular responses that drive remodeling. In surgically altered vessels, identifying these triggers helps explain why narrowing may develop and guides investigation of preventive strategies.
Smooth muscle cells and myofibroblasts are the principal responding cell populations identified in the overview. After endothelial injury or altered flow activates inflammation, these cells migrate toward the intima, proliferate, and contribute extracellular matrix. Their coordinated movement and expansion increase cellular and matrix content within the inner vessel layer, making them central targets for mechanistic study.
Extracellular matrix deposition changes the composition and structure of the intima rather than merely adding transient inflammatory cells. As matrix accumulates alongside smooth muscle cell and myofibroblast activity, the inner layer becomes thicker and the vessel passageway can become narrower. This relationship links cellular remodeling to impaired flow and explains why matrix regulation is relevant to long-term vascular patency.
Altered blood-flow forces can act alongside endothelial injury to activate inflammation and promote remodeling within the intima. The resulting response includes migration and proliferation of smooth muscle cells and myofibroblasts, followed by extracellular matrix deposition. Because surgically altered vessels experience changed flow conditions, studying these forces may clarify why stenosis develops in some vascular circuits and grafts.
Venous intimal hyperplasia is especially relevant to hemodialysis access circuits, venous bypass grafts, and other surgically altered vessels. In these settings, progressive thickening can contribute to stenosis and impair blood flow, threatening access or graft function. Its clinical importance therefore lies in understanding the remodeling process well enough to support strategies that preserve long-term access patency.
Mechanistic study can connect endothelial injury, flow alteration, inflammation, cellular migration, proliferation, and matrix deposition with later vessel narrowing. That framework supports the development of improved vascular devices and preventive therapies, while also informing strategies for maintaining access patency. The same research context helps investigators evaluate how vascular interventions interact with remodeling in surgically altered vessels.