title: Surface modification of poly(ethylene-co-vinyl alcohol): hydroxyapatite immobilization and control of periodontal ligament cells differentiation.
abstract: To reveal and control the differentiation and proliferation of the periodontal ligament (PDL) cells and to develop a highly organized hybrid implant possessing periodontium, hydroxyapatite (HAP) was immobilized on the poly(ethylene-co-vinyl alcohol) (EVA) by alternate soaking method following with carboxyl groups' introduction through ozone exposure. Human PDL cells were cultured on the ozone-exposed EVA, collagen-immobilized EVA, HAP-immobilized EVA, HAP plate, tricalcium phosphate plate, and conventional tissue culture dish. Cell proliferation was highest on the collagen-immobilized EVA and lowest on the HAP-immobilized EVA. Alkaline phosphatase activity and osteocalcin secretion were highest on the HAP-immobilized EVA. These results suggest that PDL cells were differentiated toward bone-like cells on the HAP-immobilized EVA.
authors.affiliation: Institute for Frontier Medical Sciences, Kyoto University, Shogoin, Sakyo-ku, Kyoto 606 8507, Japan.
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Matsumura
authors.forename: Suong-Hyu
authors.initials: SH
authors.lastname: Hyon
authors.forename: Naoki
authors.initials: N
authors.lastname: Nakajima
authors.forename: Hiroo
authors.initials: H
authors.lastname: Iwata
authors.forename: Akira
authors.initials: A
authors.lastname: Watazu
authors.forename: Sadami
authors.initials: S
authors.lastname: Tsutsumi
mesh_terms: D000327:Adsorption; D002454:Cell Differentiation / Q000502:physiology; D002455:Cell Division / Q000502:physiology; D002478:Cells, Cultured; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry*; D048091:Guided Tissue Regeneration / Q000379:methods*; D006801:Humans; D008422:Materials Testing; D010513:Periodontal Ligament / Q000166:cytology* / Q000502:physiology*; D011145:Polyvinyls / Q000737:chemistry*; D013499:Surface Properties; D023822:Tissue Engineering / Q000379:methods
chemical_list: D020099:Coated Materials, Biocompatible; D011145:Polyvinyls; C020320:ethylene-vinyl alcohol copolymer; D017886:Durapatite