Publikācija: Electrically Functionalized Hydroxyapatite and Calcium Phospate Surfaces to Enhance Immobilization and Proliferation of Osateoblasts In Vitro and Modulate Osteogenesis In Vivo

Publication Type	Full-text conference paper published in conference proceedings indexed in SCOPUS or WOS database
Funding for basic activity	Unknown
Defending:	,
Publication language	English (en)
Title in original language	Electrically Functionalized Hydroxyapatite and Calcium Phospate Surfaces to Enhance Immobilization and Proliferation of Osateoblasts In Vitro and Modulate Osteogenesis In Vivo
Field of research	1. Natural sciences
Sub-field of research	1.3 Physical sciences
Authors	Jurijs Dehtjars M.V. Dvornichenko A.V. Karlov I.A. Khlusov Nataļja Poļaka R. Sammons K.V. Zajcevs
Keywords	-
Abstract	Hydroxyapatite (HAP) is used to fabricate implants for bone repair in dentistry and orthopaedics. To functionalise the surface of HAP that is in direct contact with human cells a surface electrical charge deposition has been achieved by means of hydrogenation technology. This technology provides uniform 3 dimensioned processing of the specimen surfaces. The engineered charge was estimated from measurements of the photoelectron emission work function (ϕ). The later was increased to ~ 0.2 eV. The negatively charged HAP surface attached 10 times more osteoblatic cells and increased their proliferation capacity 1.6 times, in contrast to the uncharged one. The above increment of ϕ had an effect on the differentiation of mesenchymal stromal cell pool (MSCP) immobilized on the calcium phosphate (CP) coatings. In vivo experiments (BALB/c mice) demonstrated that hydrogenation of CP coatings could effect MSCP differentiation into fibroblasts or osteoblasts. The technique of intracellular RNA staining detected the actively synthesizing osteoblasts and bone marrow stromal cells.
DOI:	10.1007/978-3-642-03900-3_70
Hyperlink:	http://link.springer.com/chapter/10.1007/978-3-642-03900-3_70
Reference	Dehtjars, J., Dvornichenko, M., Karlov, A., Khlusov, I., Poļaka, N., Sammons, R., Zajcevs, K. Electrically Functionalized Hydroxyapatite and Calcium Phospate Surfaces to Enhance Immobilization and Proliferation of Osateoblasts In Vitro and Modulate Osteogenesis In Vivo. In: IFMBE Proceedings. Vol.25/10: World Congress on Medical Physics and Biomedical Engineering, Germany, Munich, 7-12 September, 2009. Berlin: Springer Berlin Heidelberg, 2010, pp.245-248. ISBN 978-3-642-03899-0. e-ISBN 978-3-642-03900-3. ISSN 1680-0737. Available from: doi:10.1007/978-3-642-03900-3_70
Additional information	Citation count:   0
ID	6841