seeding-implantation-biosynthetic-tissue-engineered-tracheal-graft

Seeding and Implantation of a Biosynthetic Tissue-engineered Tracheal Graft in a Mouse Model

Treatment options for congenital or secondary long segment tracheal defects have historically been limited due to an inability to replace functional ...

Nationwide Children's Hospital

Research Institute at Nationwide Children's Hospital

With the evolution of medical and surgical management for pediatric airway disorders, the development of easily translated techniques of measuring airway dimensions can improve the quantification of outcomes of these interventions. We have developed a technique that improves the ability to characterize endoscopic airway dimensions using common bronchoscopic equipment and an open-source image-processing platform.

Objective characterization of airway dimensions using image processing.

Recent efforts to tissue engineer long-segment tracheal grafts have been complicated by stenosis and malacia. It has been proposed that both the mechanical characteristics and cell seeding capacity of TETG scaffolds are integral to graft performance. Our aim was to design a tracheal construct that approximates the biomechanical properties of native sheep trachea and optimizes seeding with bone marrow derived mononuclear cells prior to preclinical evaluation in an ovine model.

Designing a tissue-engineered tracheal scaffold for preclinical evaluation.

Endoscopic airway measurement (EAM) combines optical endoscopic instruments with open source image processing to accurately obtain airway dimensions. Preclinical models have demonstrated EAM as an accurate technique of airway measurement with the added advantage of characterizing multilevel stenosis, non-circular lesions, and distal obstruction. The aim of this prospective clinical study was to compare EAM to airway measurements obtained from endotracheal tube approximation (ETTA) during pediatric aerodigestive evaluation and to evaluate reproducibility of EAM across practitioners.

Article	Year
Objective characterization of airway dimensions using image processing. International journal of pediatric otorhinolaryngology\| PubMed ID: 27863622	2016
Designing a tissue-engineered tracheal scaffold for preclinical evaluation. International journal of pediatric otorhinolaryngology\| PubMed ID: 29287858	2018
Clinical validation and reproducibility of endoscopic airway measurement in pediatric aerodigestive evaluation. International journal of pediatric otorhinolaryngology\| PubMed ID: 30554710	2019

Tendy Chiang

Biography

JoVE Journal Publications

Other Publications