TY - JOUR
T1 - Tissue engineered vascular grafts are resistant to the formation of dystrophic calcification
AU - Turner, Mackenzie E.
AU - Blum, Kevin M.
AU - Watanabe, Tatsuya
AU - Schwarz, Erica L.
AU - Nabavinia, Mahboubeh
AU - Leland, Joseph T.
AU - Villarreal, Delaney J.
AU - Schwartzman, William E.
AU - Chou, Ting Heng
AU - Baker, Peter B.
AU - Matsumura, Goki
AU - Krishnamurthy, Rajesh
AU - Yates, Andrew R.
AU - Hor, Kan N.
AU - Humphrey, Jay D.
AU - Marsden, Alison L.
AU - Stacy, Mitchel R.
AU - Shinoka, Toshiharu
AU - Breuer, Christopher K.
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/12
Y1 - 2024/12
N2 - Advancements in congenital heart surgery have heightened the importance of durable biomaterials for adult survivors. Dystrophic calcification poses a significant risk to the long-term viability of prosthetic biomaterials in these procedures. Herein, we describe the natural history of calcification in the most frequently used vascular conduits, expanded polytetrafluoroethylene grafts. Through a retrospective clinical study and an ovine model, we compare the degree of calcification between tissue-engineered vascular grafts and polytetrafluoroethylene grafts. Results indicate superior durability in tissue-engineered vascular grafts, displaying reduced late-term calcification in both clinical studies (p < 0.001) and animal models (p < 0.0001). Further assessments of graft compliance reveal that tissue-engineered vascular grafts maintain greater compliance (p < 0.0001) and distensibility (p < 0.001) than polytetrafluoroethylene grafts. These properties improve graft hemodynamic performance, as validated through computational fluid dynamics simulations. We demonstrate the promise of tissue engineered vascular grafts, remaining compliant and distensible while resisting long-term calcification, to enhance the long-term success of congenital heart surgeries.
AB - Advancements in congenital heart surgery have heightened the importance of durable biomaterials for adult survivors. Dystrophic calcification poses a significant risk to the long-term viability of prosthetic biomaterials in these procedures. Herein, we describe the natural history of calcification in the most frequently used vascular conduits, expanded polytetrafluoroethylene grafts. Through a retrospective clinical study and an ovine model, we compare the degree of calcification between tissue-engineered vascular grafts and polytetrafluoroethylene grafts. Results indicate superior durability in tissue-engineered vascular grafts, displaying reduced late-term calcification in both clinical studies (p < 0.001) and animal models (p < 0.0001). Further assessments of graft compliance reveal that tissue-engineered vascular grafts maintain greater compliance (p < 0.0001) and distensibility (p < 0.001) than polytetrafluoroethylene grafts. These properties improve graft hemodynamic performance, as validated through computational fluid dynamics simulations. We demonstrate the promise of tissue engineered vascular grafts, remaining compliant and distensible while resisting long-term calcification, to enhance the long-term success of congenital heart surgeries.
UR - http://www.scopus.com/inward/record.url?scp=85187110065&partnerID=8YFLogxK
U2 - 10.1038/s41467-024-46431-4
DO - 10.1038/s41467-024-46431-4
M3 - Article
C2 - 38467617
AN - SCOPUS:85187110065
SN - 2041-1723
VL - 15
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 2187
ER -