Biomimetic versus Sintered Calcium Phosphates: The in vitro Behavior of Osteoblasts and Mesenchymal Stem Cells

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F17%3APU127447" target="_blank" >RIV/00216305:26620/17:PU127447 - isvavai.cz</a>

Result on the web

<a href="https://www.liebertpub.com/doi/abs/10.1089/ten.tea.2016.0406" target="_blank" >https://www.liebertpub.com/doi/abs/10.1089/ten.tea.2016.0406</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1089/ten.tea.2016.0406" target="_blank" >10.1089/ten.tea.2016.0406</a>

Result language

angličtina

Original language name

Biomimetic versus Sintered Calcium Phosphates: The in vitro Behavior of Osteoblasts and Mesenchymal Stem Cells

Original language description

The fabrication of calcium phosphates using biomimetic routes, namely, precipitation processes at body temperature, results in distinct features compared to conventional sintered calcium phosphate ceramics, such as a high specific surface area (SSA) and micro- or nanometric crystal size. The aim of this article is to analyze the effects of these parameters on cell response, focusing on two bone cell types: rat mesenchymal stem cells (rMSCs) and human osteoblastic cells (SaOS-2). Biomimetic calcium-deficient hydroxyapatite (CDHA) was obtained by a low temperature setting reaction, and -tricalcium phosphate (-TCP) and -tricalcium phosphate were subsequently obtained by sintering CDHA either at 1400 degrees C or 1100 degrees C. Sintered stoichiometric hydroxyapatite (HA) was also prepared using ceramic routes. The materials were characterized in terms of SSA, skeletal density, porosity, and pore size distribution. SaOS-2 cells and rMSCs were seeded either directly on the surfaces of the materials or on glass coverslips subsequently placed on top of the materials to expose the cells to the CaP-induced ionic changes in the culture medium, while avoiding any topography-related effects. CDHA produced higher ionic fluctuations in both cell culture media than sintered ceramics, with a strong decrease of calcium and a release of phosphate. Indirect contact cell cultures revealed that both cell types were sensitive to these ionic modifications, resulting in a decrease in proliferation rate, more marked for CDHA, this effect being more pronounced for rMSCs. In direct contact cultures, good cell adhesion was found on all materials, but, while cells were able to proliferate on the sintered calcium phosphates, cell number was significantly reduced with time on biomimetic CDHA, which was associated to a higher percentage of apoptotic cells. Direct contact of the cells with biomimetic CDHA resulted also in a higher alkaline phosphatase activity for both cell types compared to sinter

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30404 - Biomaterials (as related to medical implants, devices, sensors)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

TISSUE ENGINEERING PART A

ISSN

1937-3341

e-ISSN

1937-335X

Volume of the periodical

23

Issue of the periodical within the volume

23-24

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

1297-1309

UT code for WoS article

000417329100002

EID of the result in the Scopus database

2-s2.0-85037725607