Volume 16, Issue 4 pp. 346-354
RESEARCH ARTICLE

Extruded poly (glycerol sebacate) and polyglycolic acid vascular graft forms a neoartery

Takuma Fukunishi

Takuma Fukunishi

Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA

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Cecillia Lui

Cecillia Lui

Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA

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Chin Siang Ong

Chin Siang Ong

Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA

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Tyler Dunn

Tyler Dunn

Section of Cardiac Surgery, University of Chicago, Chicago, Illinois, USA

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Shanxiu Xu

Shanxiu Xu

Section of Cardiac Surgery, University of Chicago, Chicago, Illinois, USA

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Carissa Smoot

Carissa Smoot

The Secant Group, LLC, Telford, Pennsylvania, USA

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Ryan Smalley

Ryan Smalley

The Secant Group, LLC, Telford, Pennsylvania, USA

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Jeremy Harris

Jeremy Harris

The Secant Group, LLC, Telford, Pennsylvania, USA

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Peter Gabriele

Peter Gabriele

The Secant Group, LLC, Telford, Pennsylvania, USA

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Lakshmi Santhanam

Lakshmi Santhanam

Department of Anesthesiology, Johns Hopkins Hospital, Baltimore, Maryland, USA

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Steven Lu

Steven Lu

The Secant Group, LLC, Telford, Pennsylvania, USA

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Narutoshi Hibino

Corresponding Author

Narutoshi Hibino

Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA

Section of Cardiac Surgery, University of Chicago, Chicago, Illinois, USA

Correspondence

Narutoshi Hibino, Section of Cardiac Surgery, Department of Surgery, The University of Chicago, 5841 S. Maryland Ave, Room E500B | MC5040 Chicago, IL 60637, USA.

Email: [email protected]

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First published: 27 January 2022
Citations: 11

Takuma Fukunishi and Cecillia Lui contributed equally to this work.

Abstract

In the ongoing search for the optimal biomaterial for tissue engineered vascular grafts (TEVGs), poly (glycerol sebacate) (PGS) has emerged as a new potential candidate. We have utilized a novel method to create unique, pore-free, extruded PGS grafts with and without a supportive exterior layer of polyglycolic acid (PGA). The 1 mm diameter by 5 mm length TEVGs were implanted in a rat model of infrarenal abdominal aorta interposition grafting. Three months after implantation, TEVGs comprised of extruded PGS with an external PGA braid demonstrated a patency rate of 9/10 (90%) with no signs of dilatation, dehiscence, or rupture. The PGS/PGA graft was remodeled into a neoartery with complete endothelialization of the neoartery lumen and formation of smooth muscle actinin multilayers as demonstrated via immunohistochemistry. Formation and maturation of extracellular matrix material were also observed, with amounts of elastin and collagen comparable to native rat aorta. No significant host inflammatory response was observed. These findings suggest the combination of an extruded PGS tube with an external reinforcing PGA braid is a promising material for small diameter TEVGs.

CONFLICT OF INTEREST

The authors have declared that there is no conflict of interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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