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Inflammatory response to titanium surfaces with fibrinogen and catalase coatings: an in vitro study

Journal article
Authors Anna Göransson
Christina Gretzer
Pentti Tengvall
Ann Wennerberg
Published in J Biomed Mater Res A
Volume 80
Issue 3
Pages 693-9
Publication year 2007
Published at Institute of Odontology
Institute of Clinical Sciences
Pages 693-9
Language en
Keywords Catalase/*pharmacology, Cell Adhesion, Cell Differentiation, Cell Survival, Cells, Cultured, Coated Materials, Biocompatible/chemistry/*pharmacology, Cytokines/biosynthesis, Fibrinogen/*pharmacology, Humans, Inflammation/*chemically induced, Leukocytes, Mononuclear/cytology/drug effects, Materials Testing, Surface Properties, Titanium/*adverse effects
Subject categories Dentistry


The aim of the present study was to evaluate the possibility to modulate the early inflammatory response in vitro by coating titanium surfaces with candidate proinflammatory (fibrinogen coated turned titanium "Fib") and antiinflammatory proteins (catalase on top of fibrinogen coated turned titanium "Cat"). Additionally, turned titanium surfaces (Ti) were used as controls. The discs were incubated with human mononuclear cells. Adhered cells were investigated with respect to number, viability, differentiation (acute marker 27E10 vs. chronic marker RM3/1), and cytokine production (TNF-alpha and IL-10), after 24 and 72 h. The results indicated that it is possible to modulate the inflammatory response with protein coatings. However, the strongest inflammatory response, indicated by increased number of adhered cells and release of pro and antiinflammatory mediators, was induced by Cat. Furthermore, the cytokine production on this surface was not sensitive to LPS stimulation. Differentiation measured as the expression of the chronic cell surface marker, dominated after 72 h for all surface modifications and Cat displayed an increased number compared to the others. A decrease in the total number of adhered cells and amounts of TNF-alpha were observed on all surfaces over time. The cell viability was, in general, high for all tested surfaces. In conclusion, the study proved it possible to influence the early inflammatory response in vitro by immobilizing protein coatings to titanium surfaces. However, the catalase surface demonstrated the strongest inflammatory response, and the possibility to selectively use the potent antiinflammatory capacity of catalase needs to be further evaluated.

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