title: Titanium surfaces with nanotopography modulate cytokine production in cultured human gingival fibroblasts.
abstract: Implant topography is an important factor that influences many cell types. To understand the role of topography in the inflammatory events, we evaluated the response of human gingival fibroblasts (HGFs) by the release pattern of cytokines. HGFs were cultured on Ti discs for 24 and 48 h. Four different surface treatments were used: machining method (turned), blasting followed by an acid-etching method (BAE), oxidative nanopatterning (ON) method, and an association of blasting followed by an acid-etching plus oxidative nanopatterning (BAE+ON) method. Extracellular levels of IL-6, IL-8, transforming growth factor beta (TGF-β), IL-4, and IL-10 were measured by enzyme-linked immunosorbant assay. Increased levels of IL-6 and IL-8 were observed in all surfaces after 24 h which decreased after 48 h. BAE, ON, and BAE+ON surfaces showed a reduction in IL-6 levels compared with the turned after 48 h (p < 0.05). On one hand, IL-8 production was lower in BAE+ON in comparison to the turned surface (p < 0.05). On the other hand, IL-4 showed increased levels with 48 h, which were significantly different between turned, BAE, and ON surfaces, but not with BAE+ON. Additionally, TGF-β and IL-10 production were not detected. This study indicates that nanotopography might be important in the modulation of the inflammatory response in cultured HGFs.
authors.affiliation: Division of Periodontology, Department of Oral Diagnosis and Surgery, Araraquara School of Dentistry, UNESP, São Paulo State University, Araraquara, Brazil. betoschwartz@hotmail.com
authors.forename: Humberto Osvaldo
authors.initials: HO
authors.lastname: Schwartz-Filho
authors.forename: Ana Carolina Faria
authors.initials: AC
authors.lastname: Morandini
authors.forename: Erivan Schnaider
authors.initials: ES
authors.lastname: Ramos-Junior
authors.forename: Ryo
authors.initials: R
authors.lastname: Jimbo
authors.forename: Carlos Ferreira
authors.initials: CF
authors.lastname: Santos
authors.forename: Elcio
authors.initials: E
authors.lastname: Marcantonio
authors.forename: Ann
authors.initials: A
authors.lastname: Wennerberg
authors.forename: Rosemary Adriana Chiérici
authors.initials: RA
authors.lastname: Marcantonio
mesh_terms: D000134:Acid Etching, Dental; D002478:Cells, Cultured; D016207:Cytokines / Q000096:biosynthesis*; D005347:Fibroblasts / Q000166:cytology / Q000378:metabolism*; D005881:Gingiva / Q000166:cytology*; D006801:Humans; D021621:Imaging, Three-Dimensional; D020007:Implants, Experimental; D007368:Interferometry; D018625:Microscopy, Atomic Force; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D056951:Photoelectron Spectroscopy; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D016207:Cytokines; D014025:Titanium