Skip to Main content Skip to Navigation
Journal articles

Biocompatibility and degradation studies of poly(L-lactide-co-trimethylene carbonate) copolymers as cardiac occluders

Abstract : Poly(L-lactide-co-trimethylene carbonate) (PLT) copolymers were synthesized by ring opening polymerization of L-lactide (LLA) and trimethylene carbonate (TMC). The resulting copolymers were characterized by using 1H NMR, GPC, DSC and tensile tests. The copolymer properties are dependent on the TMC content. In vitro degradation of copolymers was carried out in pH 7.4 phosphate buffered saline at 37 °C. The results show that copolymers with higher TMC content are more resistant to degradation. The cytotoxicity and hemocompatibility of copolymers were evaluated from MTT assay, hemolysis test, dynamic clotting time and plasma recalcification time. Results indicate that the copolymers present very low cytotoxicity and good hemocompatibility. Cardiac occluders were designed and fabricated using 3D printing. In vivo degradation of occluders was realized by intramuscular implantation in the back of rabbits. The occluders were almost totally degraded in 120 days. Visual observation and H&E staining analysis confirmed the good tissue compatibility of occluders. All these findings suggest that PLLA-TMC copolymers could be promising for potential applications as degradable occluder material.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-03093156
Contributor : Suming Li <>
Submitted on : Tuesday, January 5, 2021 - 11:56:42 AM
Last modification on : Wednesday, January 6, 2021 - 3:28:00 AM

File

Manu 20190702.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Laishun Xi, Yuandou Wang, Feng Su, Qingzhen Zhu, Suming Li. Biocompatibility and degradation studies of poly(L-lactide-co-trimethylene carbonate) copolymers as cardiac occluders. Materialia, Elsevier, 2019, 7, pp.100414. ⟨10.1016/j.mtla.2019.100414⟩. ⟨hal-03093156⟩

Share

Metrics

Record views

8

Files downloads

26