Amino acid-based Poly(ester urea) copolymer films for hernia-repair applications.

Journal Article (Journal Article)

The use of degradable materials is required to address current performance and functionality shortcomings from biologically-derived tissues and non-resorbable synthetic materials used for hernia mesh repair applications. Herein a series of degradable l-valine-co-l-phenylalanine poly(ester urea) (PEU) copolymers were investigated for soft-tissue repair. Poly[(1-VAL-8)0.7 -co-(1-PHE-6)0.3 ] showed the highest uniaxial mechanical properties (332.5 ± 3.5 MPa). Additionally, l-valine-co-l-phenylalanine poly(ester urea)s were blade coated on small intestine submucosa extracellular matrix (SIS-ECM) and found to enhance the burst test mechanical properties of SIS-ECM in composite films (force at break between 102.6 ± 6.5-151.4 ± 11.3 N). Free standing films of l-valine-co-l-phenylalanine PEUs were found to have superior extension at break when compared to SIS-ECM (averages between 1.2 and 1.9 cm and 1.2 cm respectively). Fibroblast (L-929) spreading, proliferation, and improved attachment over control were observed without toxicity in vitro, while a reduced inflammatory response at both 7 and 14 days post-implant was observed for poly[(1-VAL-8)⁠0.7 -co-(1-PHE-6)⁠0.3 ] when compared to polypropylene in an in vivo rat hernia model. These results support the use of PEU copolymers as free-standing films or as composite materials in soft-tissue applications for hernia-repair.

Full Text

Duke Authors

Cited Authors

  • Dreger, NZ; Fan, Z; Zander, ZK; Tantisuwanno, C; Haines, MC; Waggoner, M; Parsell, T; Søndergaard, CS; Hiles, M; Premanandan, C; Becker, ML

Published Date

  • November 2018

Published In

Volume / Issue

  • 182 /

Start / End Page

  • 44 - 57

PubMed ID

  • 30103171

Electronic International Standard Serial Number (EISSN)

  • 1878-5905

International Standard Serial Number (ISSN)

  • 0142-9612

Digital Object Identifier (DOI)

  • 10.1016/j.biomaterials.2018.08.003


  • eng