Related Experiment Video
Updated: Feb 17, 2026
08:56
Tissue-Engineered Graft for Circumferential Esophageal Reconstruction in Rats
Published on: February 10, 2020
7.7K
Patch esophagoplasty using an in-body-tissue-engineered collagenous connective tissue membrane
Hiroomi Okuyama1, Satoshi Umeda1, Yuichi Takama1
1Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.
Journal of Pediatric Surgery
|December 11, 2017
Summary
This study shows that Biosheets, a novel in-body-tissue-engineered scaffold, successfully regenerated esophageal tissue in beagles. The Biosheet material demonstrated potential for esophageal repair, promoting tissue regeneration and maintaining function.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Surgical Innovation
Background:
- Esophageal replacement remains challenging, with limited success for current methods.
- In-body-tissue-engineered connective tissue has shown promise for vascular grafts.
Purpose of the Study:
- To evaluate the efficacy of an in-body-tissue-engineered collagenous connective tissue membrane, "Biosheet", as a novel esophageal scaffold.
- To assess Biosheet's suitability for esophageal repair in a beagle model.
Main Methods:
- Biosheets were created by tissue ingrowth into subcutaneous molds in beagles.
- Rectangular Biosheets were implanted to replace cervical esophageal defects.
- Endoscopic and histological evaluations were performed at 4 and 12 weeks post-implantation.
Main Results:
- Biosheets provided sufficient strength and flexibility for esophageal defect repair.
- All beagles survived with full oral feeding; no leakage or stenosis occurred.
- Histology confirmed regeneration of stratified squamous epithelium and muscle tissue within 12 weeks.
Conclusions:
- Biosheets facilitated the regeneration of essential esophageal tissues, including epithelium and muscle.
- These findings suggest Biosheets hold potential as a novel scaffold for esophageal reconstruction.
