title: Biocompatibility studies on biodegradable polyester-based composites of human osteoblasts: a preliminary screening.
abstract: A series of biodegradable composites with natural hydroxyapatite, designed for possible use in orthopedics applications, were preliminarily screened for biocompatibility by employing primary cultures of human osteoblasts in a direct contact method. The cells were seeded at low density onto the materials under investigation and allowed to grow for 2 weeks. They then were analyzed for morphology, proliferation, viability, alkaline phosphatase activity (AP), osteocalcin (OC) production, and extracellular matrix mineralization. The results showed that all materials have good biocompatibility. Cell viability tests demonstrated that in all cases the values were comparable to the control, and the addition of hydroxyapatite always resulted in an enhancement of performance with respect to the plain polymer. AP and OC analysis confirmed that all composites allowed the expression of phenotypic markers. Scanning electron microscopy provided direct evidence of intense cell adhesion and proliferation on the tested materials.
authors.affiliation: Istituto di Ricerca e Tecnologia delle Materie Plastiche-C.N.R., Via Toiano, 6-80072 Arco Felice (Naples) Italy. louis@irtemp.na.cnr.it
authors.forename: L
authors.initials: L
authors.lastname: Calandrelli
authors.forename: B
authors.initials: B
authors.lastname: Immirzi
authors.forename: M
authors.initials: M
authors.lastname: Malinconico
authors.forename: G
authors.initials: G
authors.lastname: Orsello
authors.forename: M G
authors.initials: MG
authors.lastname: Volpe
authors.forename: F
authors.initials: F
authors.lastname: Della Ragione
authors.forename: V
authors.initials: V
authors.lastname: Zappia
authors.forename: A
authors.initials: A
authors.lastname: Oliva
mesh_terms: D001672:Biocompatible Materials; D001673:Biodegradation, Environmental; D002478:Cells, Cultured; D006801:Humans; D008855:Microscopy, Electron, Scanning; D010006:Osteoblasts / Q000378:metabolism* / Q000648:ultrastructure; D011091:Polyesters
chemical_list: D001672:Biocompatible Materials; D011091:Polyesters