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Binding of human coronary artery endothelial cells to plasma‐treated titanium dioxide nanotubes of different diameters
Author(s) -
Flašker Ajda,
Kulkarni Mukta,
MrakPoljšak Katjuša,
Junkar Ita,
Čučnik Saša,
Žigon Polona,
Mazare Anca,
Schmuki Patrik,
Iglič Aleš,
SodinSemrl Snezna
Publication year - 2016
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.35646
Subject(s) - materials science , titanium dioxide , x ray photoelectron spectroscopy , scanning electron microscope , titanium , plasma , biomedical engineering , biophysics , chemical engineering , composite material , medicine , metallurgy , biology , physics , quantum mechanics , engineering
Nanoscale topography in improving vascular response in vitro was established previously on various titanium surfaces. In the present study different surface nanotopographies that is different diameters of titanium dioxide (TiO 2 ) nanotubes (NTs) were fabricated by electrochemical anodization and conditioned with highly reactive gaseous oxygen plasma. The morphology of different diameter NTs was studied by scanning electron microscopy and atomic force microscopy, while changes in chemical composition on the surface before and after plasma treatment were determined by X‐ray photoelectron spectroscopy. Performance of human coronary artery endothelial cells (HCAEC) on those conditioned surfaces was studied in regard to cell proliferation, released IL‐6 protein and immunofluorescence microscopy (IFM). We show that HCAEC function is dependent on the diameter of the TiO 2 NTs, functioning far less optimally when bound to 100 nm TiO 2 NTs as compared to Ti foil, 15 nm NTs or 50 nm NTs. There were improved, morphological cell shape changes, observed with IFM, between HCAEC growing on oxygen‐rich plasma‐treated versus nontreated 100 nm NTs. These endothelialized conditioned Ti nanosurfaces could elucidate optimization conditions necessary for vascular implants in coronary arteries. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 1113–1120, 2016.