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Related Experiment Video

Updated: May 7, 2026

Vein Interposition Model: A Suitable Model to Study Bypass Graft Patency
07:22

Vein Interposition Model: A Suitable Model to Study Bypass Graft Patency

Published on: January 15, 2017

Vein graft failure.

Christopher D Owens1, Warren J Gasper1, Amreen S Rahman1

  • 1Division of Vascular and Endovascular Surgery, University of California San Francisco Medical Center, San Francisco, Calif.

Journal of Vascular Surgery
|October 8, 2013
PubMed
Summary
This summary is machine-generated.

Vein graft remodeling involves structural changes after surgery to improve blood flow. Understanding these dynamic processes is key to preventing bypass failure and enhancing graft patency.

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A Rabbit Venous Interposition Model Mimicking Revascularization Surgery using Vein Grafts to Assess Intimal Hyperplasia under Arterial Blood Pressure
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Vein Interposition Model: A Suitable Model to Study Bypass Graft Patency
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Synergizing Antegrade Endoscopic with Bridging Vein Harvesting for Improvement of Great Saphenous Vein Graft Quality from the Lower Leg
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Synergizing Antegrade Endoscopic with Bridging Vein Harvesting for Improvement of Great Saphenous Vein Graft Quality from the Lower Leg

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A Rabbit Venous Interposition Model Mimicking Revascularization Surgery using Vein Grafts to Assess Intimal Hyperplasia under Arterial Blood Pressure
07:02

A Rabbit Venous Interposition Model Mimicking Revascularization Surgery using Vein Grafts to Assess Intimal Hyperplasia under Arterial Blood Pressure

Published on: May 15, 2020

Area of Science:

  • Vascular Surgery
  • Biomedical Engineering
  • Regenerative Medicine

Background:

  • Autogenous lower extremity bypass grafts undergo significant structural changes post-implantation.
  • These dynamic alterations, termed remodeling, are crucial for adapting the vein to arterial hemodynamic forces.

Purpose of the Study:

  • To explore the complex remodeling processes in arterialized vein grafts.
  • To correlate histological and molecular changes with clinical outcomes like graft patency.
  • To identify potential therapeutic targets for preventing bypass failure.

Main Methods:

  • Analysis of dynamic structural changes including inflammatory response, neointima formation, matrix turnover, and cellular proliferation/apoptosis.
  • Measurement of lumen remodeling, wall thickness, matrix composition, and endothelial changes in vivo.
  • Correlation of histologic and molecular data with clinical relevance to vein graft patency.

Main Results:

  • Remodeling leads to substantial alterations in the physical and biomechanical properties of the arterialized vein.
  • Lumen remodeling is a key, measurable outcome, alongside changes in wall thickness and matrix composition.
  • Translational research highlights the clinical significance of remodeling in vein graft patency.

Conclusions:

  • Vein graft remodeling is a multifaceted process essential for graft survival and function.
  • Understanding these molecular and histological changes offers insights into preventing bypass failure.
  • Further investigation into therapeutic strategies targeting remodeling is warranted to improve long-term outcomes.