title: Layer-by-layer hyaluronic acid-chitosan coating promoted new collagen ingrowth into a poly(ethylene terephthalate) artificial ligament in a rabbit medical collateral ligament (MCL) reconstruction model.
abstract: The ideal artificial ligament graft should have favorable biocompatibility to facilitate cell adhesion, proliferation, and collagen regeneration. In this present study, surface modification was performed on a poly(ethylene terephthalate) (PET) artificial ligament graft by layer-by-layer (LBL) self-assembly coating of hyaluronic acid (HA) and chitosan (CS). The surface characterization of the ligament was examined using scanning electron microscopy, atomic force microscopy, and energy-dispersive X-ray spectroscopy. The results of in vitro culturing of human foreskin fibroblast cells supported the hypothesis that the LBL coating of CS-HA could promote the cell proliferation and adhesion on the sheets. A rabbit medical collateral ligament reconstruction model was used to evaluate the effect of this LBL coating in vivo. The final results proved that this LBL coating could significantly promote and enhance new collagen formation among the graft fibers. On the basis of these results, we conclude that such CS-HA assembly coating could enhance PET graft biocompatibility in vitro and in vivo, and a CS-HA-coated PET graft has considerable potential as a desirable substitute for ligament reconstruction.
authors.affiliation: Department of Sports Medicine, Huashan Hospital, Shanghai, People’s Republic of China.
authors.forename: Hong
authors.initials: H
authors.lastname: Li
authors.forename: Jia
authors.initials: J
authors.lastname: Jiang
authors.forename: Yunsheng
authors.initials: Y
authors.lastname: Ge
authors.forename: Jialing
authors.initials: J
authors.lastname: Xu
authors.forename: Pengyun
authors.initials: P
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhong
authors.forename: Shiyi
authors.initials: S
authors.lastname: Chen
mesh_terms: D000818:Animals; D002460:Cell Line; D049109:Cell Proliferation; D048271:Chitosan / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D003094:Collagen / Q000378:metabolism*; D017885:Collateral Ligaments / Q000601:surgery*; D005347:Fibroblasts / Q000166:cytology; D006801:Humans; D006820:Hyaluronic Acid / Q000737:chemistry*; D008297:Male; D011093:Polyethylene Terephthalates / Q000737:chemistry*; D011817:Rabbits; D019651:Plastic Surgery Procedures; D013499:Surface Properties
chemical_list: D020099:Coated Materials, Biocompatible; D011093:Polyethylene Terephthalates; D006820:Hyaluronic Acid; D003094:Collagen; D048271:Chitosan