title: Human osteoblast response to pulsed laser deposited calcium phosphate coatings.
abstract: Octacalcium phosphate (OCP) and Mn(2+)-doped carbonate hydroxyapatite (Mn-CHA) thin films were deposited on pure, highly polished and chemically etched Ti substrates with pulsed laser deposition. The coatings exhibit different composition, crystallinity and morphology that might affect their osteoconductivity. Human osteoblasts were cultured on the surfaces of OCP and Mn-CHA thin films, and the cell attachment, proliferation and differentiation were evaluated up to 21 days. The cells showed a normal morphology and a very good rate of proliferation and viability in every experimental time. Alkaline phosphatase activity was always higher than the control and Ti groups. From days 7 to 21 collagen type I production was higher in comparison with control and Ti groups. The level of transforming growth factor beta 1 (TGF-beta1) was lower at 3 and 7 days, but reached the highest values during following experimental times (14 and 21 days). Our data demonstrate that both calcium phosphate coatings favour osteoblasts proliferation, activation of their metabolism and differentiation.
authors.affiliation: Department of Chemistry "G. Ciamician", University of Bologna, via Selmi, 2, Bologna 40126, Italy. adriana.bigi@unibo.it
authors.forename: A
authors.initials: A
authors.lastname: Bigi
authors.forename: B
authors.initials: B
authors.lastname: Bracci
authors.forename: F
authors.initials: F
authors.lastname: Cuisinier
authors.forename: R
authors.initials: R
authors.lastname: Elkaim
authors.forename: M
authors.initials: M
authors.lastname: Fini
authors.forename: I
authors.initials: I
authors.lastname: Mayer
authors.forename: I N
authors.initials: IN
authors.lastname: Mihailescu
authors.forename: G
authors.initials: G
authors.lastname: Socol
authors.forename: L
authors.initials: L
authors.lastname: Sturba
authors.forename: P
authors.initials: P
authors.lastname: Torricelli
mesh_terms: D002130:Calcium Phosphates / Q000737:chemistry* / Q000528:radiation effects; D048429:Cell Size; D002470:Cell Survival / Q000502:physiology; D002478:Cells, Cultured; D020099:Coated Materials, Biocompatible / Q000737:chemistry / Q000528:radiation effects; D006358:Hot Temperature; D006801:Humans; D007834:Lasers; D008422:Materials Testing; D010006:Osteoblasts / Q000166:cytology* / Q000502:physiology*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; C022045:octacalcium phosphate; D014025:Titanium