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Biokinetics and tissue response to ultrananocrystalline diamond nanoparticles employed as coating for biomedical devices
Author(s) -
Tasat Deborah R.,
Bruno Marcos E.,
Domingo Mariela,
Gurman Pablo,
Auciello Orlando,
Paparella María L.,
Evelson Pablo,
Guglielmotti María B.,
Olmedo Daniel G.
Publication year - 2017
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.33777
Subject(s) - materials science , tbars , superoxide dismutase , catalase , reactive oxygen species , diamond , biophysics , antioxidant , metallurgy , chemistry , biochemistry , biology , lipid peroxidation
Although Ultrananocrystalline diamond (UNCD) has been proposed as a coating material for titanium biomedical implants, the biological effects and toxicity of UNCD particles that could eventually detach have not been studied to date. The biokinetics and biological effects of UNCD compared to titanium dioxide (TiO 2 ) nanoparticles was evaluated in vivo using Wistar rats ( n = 30) i.p. injected with TiO 2 , UNCD or saline solution. After 6 months, blood, lung, liver, and kidney samples were histologically analyzed. Oxidative damage by membrane lipidperoxidation (thiobarbituric acid reactive substances‐TBARS), generation of reactive oxygen species (superoxide anion‐O 2 −), and antioxidant enzymes (superoxide dismutase‐SOD, catalase‐CAT) was evaluated in lung and liver. Histologic observation showed agglomerates of TiO 2 or UNCD in the parenchyma of the studied organs, though there were fewer UNCD than TiO 2 deposits. In addition, TiO 2 caused areas compatibles with foci of necrosis in the liver and renal hyaline cylinders. Regarding UNCD, no membrane damage (TBARS) or mobilization of enzymatic antioxidants was observed either in lung or liver samples. No variations inO 2 −generation were observed in lung (Co: 35.1 ± 4.02 vs. UNCD: 48 ± 9.1, p > 0.05). Conversely, TiO 2 exposure caused production ofO 2 −in alveolar macrophages and consumption of catalase ( p < 0.05). The studied parameters suggest that UNCD caused neither biochemical nor histological alterations, and therefore may prove useful as a surface coating for biomedical implants. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 2408–2415, 2017.