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Related Experiment Video

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Angiogenesis in tissue-engineered nerves evaluated objectively using MICROFIL perfusion and micro-CT scanning.

Hong-Kui Wang1, Ya-Xian Wang2, Cheng-Bin Xue2

  • 1School of Biology and Basic Medical Sciences, Soochow University, Suzhou, Jiangsu Province, China; Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China.

Neural Regeneration Research
|March 17, 2016
PubMed
Summary

Researchers developed a new method to evaluate blood vessel growth in tissue-engineered nerves. This technique uses MICROFIL perfusion and micro-CT scanning to analyze angiogenesis, aiding nerve regeneration research.

Keywords:
MICROFIL perfusionSchwann cellangiogenesischitosan nerve conduitmicro-CTnerve regenerationneural regenerationskin-derived precursorthree-dimensional reconstructiontissue-engineered nerve

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Vascular Biology

Background:

  • Angiogenesis is crucial for tissue-engineered nerves but lacks objective evaluation methods.
  • Existing methods for assessing nerve regeneration angiogenesis are limited.
  • Tissue-engineered nerves require robust vascularization for successful integration.

Purpose of the Study:

  • To establish a convenient and objective method for evaluating angiogenesis in tissue-engineered nerves.
  • To analyze the vascularization patterns within engineered nerve scaffolds.
  • To quantify key parameters of newly formed blood vessels in vivo.

Main Methods:

  • Constructed tissue-engineered nerves using Schwann cells and chitosan/silk fibroin scaffolds.
  • Implanted scaffolds to bridge rat sciatic nerve defects.
  • Utilized MICROFIL perfusion and micro-CT scanning for 3D blood vessel reconstruction and analysis.

Main Results:

  • New blood vessels infiltrated engineered nerves from proximal, distal, and middle regions.
  • Quantitative analysis revealed vessel number, diameter, connection, and spatial distribution.
  • Identified capillaries and microvessels (9-301 μm diameter), with 82.84% in the 27-155 μm range.

Conclusions:

  • MICROFIL perfusion and micro-CT scanning provide a reliable method for evaluating in vivo angiogenesis in tissue-engineered nerves.
  • This technique enables objective assessment and comparison of vascularization changes.
  • The findings support the development of improved strategies for nerve regeneration.