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Related Experiment Video

Updated: Feb 19, 2026

Computed Tomography and Optical Imaging of Osteogenesis-angiogenesis Coupling to Assess Integration of Cranial Bone Autografts and Allografts

Computed Tomography and Optical Imaging of Osteogenesis-angiogenesis Coupling to Assess Integration of Cranial Bone Autografts and Allografts

Published on: December 22, 2015

Pattern of Bone Generation after Irradiation in Vascularized Tissue Engineered Constructs.

Ahmad Eweida^1,2, Ibrahim Fathi¹, Ahmed M Eltawila³

¹Head, Neck and Endocrine Surgery Unit, Department of Surgery, Faculty of Medicine, University of Alexandria, Alexandria, Egypt.

Journal of Reconstructive Microsurgery

|October 31, 2017

Summary

Axially vascularized tissue engineering constructs (AVTECs) show enhanced bone formation in central regions after irradiation, offering potential for head and neck cancer reconstruction. This study highlights improved osteoinduction in AVTECs post-irradiation.

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Last Updated: Feb 19, 2026

Computed Tomography and Optical Imaging of Osteogenesis-angiogenesis Coupling to Assess Integration of Cranial Bone Autografts and Allografts

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Published on: December 22, 2015

The Arteriovenous AV Loop in a Small Animal Model to Study Angiogenesis and Vascularized Tissue Engineering

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Published on: November 2, 2016

Use of Human Perivascular Stem Cells for Bone Regeneration

Use of Human Perivascular Stem Cells for Bone Regeneration

Published on: May 25, 2012

Area of Science:

Regenerative Medicine
Biomaterials Science
Oncology

Background:

Conventional reconstruction methods are limited by poor vascularization after tumor treatments.
Regenerative medicine offers alternatives but faces challenges in irradiated tissues.

Purpose of the Study:

To investigate bone formation patterns in axially vascularized tissue engineering constructs (AVTECs) post-irradiation.
To mimic clinical scenarios following head and neck cancer treatment.

Main Methods:

AVTECs were created using Nanobone granules, bone marrow, and bone morphogenic protein-2.
An arteriovenous loop was implanted for axial vascularization.
Constructs were irradiated (15 Gy) and analyzed for bone formation, vascularization, and cellular activity.

Main Results:

Homogenous vascularization and bone formation were observed throughout the constructs.
Significantly greater bone formation occurred in the central regions compared to peripheral regions.
Vascularity, proliferation, and apoptosis were similar between central and peripheral areas.

Conclusions:

This study demonstrates bone formation patterns in AVTECs after clinically relevant irradiation doses.
Axial vascularization appears to enhance osteoinductive properties in the central regions of AVTECs post-irradiation.