Revisiting bioactivity of calcium titanate and titanium dioxide: Hydrolysis and complexation effects in osteogenic medium

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F22%3A00560435" target="_blank" >RIV/67985831:_____/22:00560435 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/22:00560435 RIV/49777513:23640/22:43967544

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0257897222007411" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0257897222007411</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2022.128820" target="_blank" >10.1016/j.surfcoat.2022.128820</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Revisiting bioactivity of calcium titanate and titanium dioxide: Hydrolysis and complexation effects in osteogenic medium

Popis výsledku v původním jazyce

This study characterized laser-deposited CaTiO3 coats on several substrates by electron microscopy, X-ray diffraction, and Raman spectra. The hydrolytic stability of such coats exposed to ambient air and immersed into culture and osteogenic media has been respectively assessed by X-ray photoelectron spectra and energy dispersive X-ray analysis. It is shown these coats on titanium and micro/nanostructured oxidic titanium are not stable in air and culture or osteogenic media where they undergo hydrolysis and Ca leakage. The role of this hydrolysis is assessed and discussed in terms of not yet acknowledged complexation of the developing TiO2 surface with constituents of Dulbecco's Modified Eagle's medium. The effect of the deposited and additionally heated CT coatings on human mesenchymal stem cells is assessed regarding survival, proliferation and differentiation towards the osteogenic lineage in osteogenic medium. It is also stressed that the identified CaTiO3 hydrolysis in air and aquatic media seriously impacts the interpretation of bioactivity and physicochemical, catalytic and photocatalytic properties of CaTiO3 surfaces, which has not been yet admitted and led to erroneous conclusions in many previous studies.

Název v anglickém jazyce

Revisiting bioactivity of calcium titanate and titanium dioxide: Hydrolysis and complexation effects in osteogenic medium

Popis výsledku anglicky

This study characterized laser-deposited CaTiO3 coats on several substrates by electron microscopy, X-ray diffraction, and Raman spectra. The hydrolytic stability of such coats exposed to ambient air and immersed into culture and osteogenic media has been respectively assessed by X-ray photoelectron spectra and energy dispersive X-ray analysis. It is shown these coats on titanium and micro/nanostructured oxidic titanium are not stable in air and culture or osteogenic media where they undergo hydrolysis and Ca leakage. The role of this hydrolysis is assessed and discussed in terms of not yet acknowledged complexation of the developing TiO2 surface with constituents of Dulbecco's Modified Eagle's medium. The effect of the deposited and additionally heated CT coatings on human mesenchymal stem cells is assessed regarding survival, proliferation and differentiation towards the osteogenic lineage in osteogenic medium. It is also stressed that the identified CaTiO3 hydrolysis in air and aquatic media seriously impacts the interpretation of bioactivity and physicochemical, catalytic and photocatalytic properties of CaTiO3 surfaces, which has not been yet admitted and led to erroneous conclusions in many previous studies.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10504 - Mineralogy

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Surface and Coatings Technology

ISSN

0257-8972

e-ISSN

—

Svazek periodika

447

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

128820

Kód UT WoS článku

000853444000001

EID výsledku v databázi Scopus

2-s2.0-85137110806