Change search
ReferencesLink to record
Permanent link

Direct link
Vascular toxicity of ultra-small TiO2 nanoparticles and single walled carbon nanotubes in vitro and in vivo
Stockholm University, Faculty of Science, Department of Biochemistry and Biophysics.
Show others and affiliations
Number of Authors: 5
2015 (English)In: Biomaterials, ISSN 0142-9612, E-ISSN 1878-5905, Vol. 63, 1-13 p.Article in journal (Refereed) Published
Abstract [en]

Ultra-small nanoparticles (USNPs) at 1-3 nm are a subset of nanoparticles (NPs) that exhibit intermediate physicochemical properties between molecular dispersions and larger NPs. Despite interest in their utilization in applications such as theranostics, limited data about their toxicity exist. Here the effect of TiO2-USNPs on endothelial cells in vitro, and zebrafish embryos in vivo, was studied and compared to larger TiO2-NPs (30 nm) and to single walled carbon nanotubes (SWCNTs). In vitro exposure showed that TiO2-USNPs were neither cytotoxic, nor had oxidative ability, nevertheless were genotoxic. In vivo experiment in early developing zebrafish embryos in water at high concentrations of TiO2-USNPs caused mortality possibly by acidifying the water and caused malformations in the form of pericardial edema when injected. Myo1C involved in glomerular development of zebrafish embryos was upregulated in embryos exposed to TiO2-USNPs. They also exhibited anti-angiogenic effects both in vitro and in vivo plus decreased nitric oxide concentration. The larger TiO2-NPs were genotoxic but not cytotoxic. SWCNTs were cytotoxic in vitro and had the highest oxidative ability. Neither of these NPs had significant effects in vivo. To our knowledge this is the first study evaluating the effects of TiO2-USNPs on vascular toxicity in vitro and in vivo and this strategy could unravel USNPs potential applications.

Place, publisher, year, edition, pages
2015. Vol. 63, 1-13 p.
Keyword [en]
Ultra-small nanoparticles, Zebrafish, Endothelium, Angiogenesis, Genotoxicity
National Category
Medical Engineering Industrial Biotechnology
URN: urn:nbn:se:su:diva-119527DOI: 10.1016/j.biomaterials.2015.05.044ISI: 000357910400001OAI: diva2:847906
Available from: 2015-08-21 Created: 2015-08-17 Last updated: 2015-08-21Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Bayat, Narges
By organisation
Department of Biochemistry and Biophysics
In the same journal
Medical EngineeringIndustrial Biotechnology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 35 hits
ReferencesLink to record
Permanent link

Direct link