TY - GEN TI - Growth of human adipose-derived stem cells on Ti-6Al-4V alloy with various surface modifications T3 - NANOCON 2015. International Conference /7./ AU - Kročilová, Nikola AB - Adipose-derived stem cells (ASCs) are of a great importance for bone tissue engineering. We compared ASCs obtained by liposuction under two pressures (-200 mmHg and -700 mmHg). The number and proliferation activity of cells isolated under -700 mmHg (ASC-H) were higher than in cells isolated under -200 mmHg (ASC-L). However, the ASC-L was more active in osteogenic differentiation, as manifested by a higher intensity of fluorescence of alkaline phosphatase and osteocalcin in these cells. The adhesion and growth of ASCs were then studied on Ti-6Al-4V samples either unmodified (K, roughness parameter R-a = 280 nm) or modified by shot blasting and tarnishing A, R-a = 200 nm), vibratory finishing (B, R-a = 100 nm) and vibratory finishing, shot blasting and polishing (C, R-a = 80 nm). All modified samples were more wettable than the K samples. On day 1 after seeding, the size of cell spreading area on some modified samples was lower than on K samples, namely on B samples in ASC-L, on B and C in ASC-H and on A in control MG-63 cells. On day 3, the cell number on some modified samples became higher than on K samples, namely on C samples (ASC-L), on B (ASC-H) and on B and C s (MG-63 cells). On day 7, the numbers of ASC-H and MG-63 cells on all modified samples evened out and became significantly higher than on K samples. On ASC-L samples, the highest cell numbers were obtained on A samples. Thus, all studied modifications of Ti-6Al-4V enhanced growth of ASCs and human osteoblast-like MG-63 cells. SN - 978-80-87294-63-5 UR - http://hdl.handle.net/11104/0267994 UR - http://www.nusl.cz/ntk/nusl-263125 A2 - Marvan, J. A2 - Motarjemi, H. A2 - Havlíková, Jana A2 - Gabor, R. A2 - Bačáková, Lucie A2 - Molitor, M. A2 - Pařízek, Martin LA - eng KW - liposuction KW - cell proliferation KW - surface roughness KW - stem cells KW - bone tissue engineering KW - bone implants PY - 2015 PB - Fyziologický ústav, Vídeňská 1083, Praha 4, 142 20, http://www.fgu.cas.cz/ ER -