Evaluation of a biodegradable PLA-PEG-PLA internal biliary stent for liver transplantation: in vitro degradation and mechanical properties.
absorbable implants
biliary fistula
internal biliary stenting
liver transplantation
mechanical properties
polylactide-polyethylene glycol copolymers
Journal
Journal of biomedical materials research. Part B, Applied biomaterials
ISSN: 1552-4981
Titre abrégé: J Biomed Mater Res B Appl Biomater
Pays: United States
ID NLM: 101234238
Informations de publication
Date de publication:
03 2021
03 2021
Historique:
received:
10
04
2020
revised:
16
07
2020
accepted:
04
08
2020
pubmed:
3
9
2020
medline:
21
1
2022
entrez:
3
9
2020
Statut:
ppublish
Résumé
Internal biliary stenting during biliary reconstruction in liver transplantation decrease anastomotic biliary complications. Implantation of a resorbable internal biliary stent (RIBS) is interesting since it would avoid an ablation gesture. The objective of present work was to evaluate adequacy of selected PLA-b-PEG-b-PLA copolymers for RIBS aimed to secure biliary anastomose during healing and prevent complications, such as bile leak and stricture. The kinetics of degradation and mechanical properties of a RIBS prototype were evaluated with respect to the main bile duct stenting requirements in liver transplantation. For this purpose, RIBS degradation under biliary mimicking solution versus standard phosphate buffer control solution was discussed. Morphological changes, mass loss, water uptake, molecular weight, permeability, pH variations, and mechanical properties were examined over time. The permeability and mechanical properties were evaluated under simulated biliary conditions to explore the usefulness of a PLA-b-PEG-b-PLA RIBS to secure biliary anastomosis. Results showed no pH influence on the kinetics of degradation, with degradable RIBS remaining impermeable for at least 8 weeks, and keeping its mechanical properties for 10 weeks. Complete degradation is reached at 6 months. PLA-b-PEG-b-PLA RIBS have the required in vitro degradation characteristics to secure biliary anastomosis in liver transplantation and envision in vivo applications.
Substances chimiques
Polyesters
0
polylactide-polyethylene glycol-polylactide
0
Polyethylene Glycols
3WJQ0SDW1A
Types de publication
Evaluation Study
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
410-419Informations de copyright
© 2020 Wiley Periodicals LLC.
Références
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